WO2020036148A1 - Electronic circuit board, communication circuit, and connection method for same - Google Patents

Abstract

Provided are a small electronic circuit board, a communication circuit, and a connection method therefor that make it possible to achieve a parallel connection even when an attachment angle has been changed. The electronic circuit board (100) according to the present embodiment comprises a first board (101) and a plurality of first couplers (43) that are formed on the first board (101) and are for connecting a first electronic circuit and a second electronic circuit. In a plan view of the first board (101) of the electronic circuit board (100), K first couplers (43) are arranged at intervals along the circumference of a first circle (C1) (K being an integer that is equal to or greater than 4), (m×K) first couplers (43) are arranged at intervals along the circumference of a second circle (C2) that is concentric with the first circle (C1) but larger than the first circle (C1) (m being an integer that is equal to or greater than 1), and the first couplers (43) are point symmetric about the center (0) of the first circle (C1).

Description

Electronic circuit board, communication circuit, and connection method thereof

The present invention relates to an electronic circuit board having a plurality of couplers, a communication circuit, and a connection method thereof.

The inventor of the present application has proposed an electronic circuit that performs data communication between substrates using capacitive coupling and inductive coupling (collectively referred to as electromagnetic field coupling) (for example, see Patent Documents 1 to 4). ). In such an electronic circuit, a coupler is provided on a flexible printed circuit board (Flexible Printed Circuit) (FPC), a printed circuit board (Printed Circuit Circuit Board), a module, and a terminal (hereinafter, simply referred to as a board). Is formed.

で は In Patent Document 1, a signal line is used as a coupler. Two signal lines (signal line and feedback signal line) arranged in parallel are formed on each substrate (FIG. 33). The signal line and the feedback signal line are terminally matched using a resistor. The signal line and the feedback signal line of one substrate are arranged so as to be parallel and in the same direction as the signal line and the feedback signal line of the other substrate. By laminating the substrates, the signal lines are arranged close to each other. Since the signal lines overlap and the return signal lines overlap, wireless communication can be performed by electromagnetic field coupling.

Patent Document 2 discloses a communication device using a signal line as a coupler. In Patent Document 2, in order to use a differential signal, an extraction transmission line is connected to both ends of one signal line. A signal of positive polarity is input to the transmission line from one outgoing transmission line, and a signal of negative polarity is input to the transmission line from the other outgoing transmission line. Further, it is disclosed that a rotatable installation can be achieved by using an arcuate transmission line (FIG. 48).

回 転 In the rotation information transmitting device of Patent Document 3, the arc coupler and the electromagnetic field coupling of the shorter arc coupler are coupled. It is disclosed that the central angle of the first arc-shaped coupler is 350 ° or more (paragraph 0032). According to the rotation information transmission device of Patent Literature 3, data can be transmitted in a non-contact manner between relatively rotating substrates.

Patent Document 4 discloses a semiconductor integrated circuit that performs electromagnetic field communication by arranging a transmitting coil and a receiving coil close to each other. In a plan view, the transmitting coil and the receiving coil are formed in a square shape. Further, a coil array of 3 rows and 3 columns or a coil array of 6 rows and 6 columns is used.

Japanese Patent No. 5213087 JP 2014-33432A WO 2018/012622 JP 2017-139314 A

に お い て In inter-module communication using such a coupler, it may be necessary to change the mounting angle of the connection part. For example, communication between modules may be applied to a connector for connecting an organic light emitting diode (Organic Light Emitting Diode; OLED) display and a set-top box with an FPC. When applied to a connector, the thickness of the OLED display is as thin as about 3.5 mm. For this reason, conventional mechanical connectors cannot be used because they are thick, and electronic and thin non-contact connectors are required. Furthermore, since the number of data lines is eight or sixteen, even if FPC is used, it is hard and difficult to bend.

Therefore, in order to be able to change the relative position between the OLED display and the set-top box, it is necessary to change the mounting angle of the connector to four angles of, for example, 0 degree, 90 degrees, 180 degrees, and 270 degrees. Connectors are required.

結合 In the case of a coupler using a straight transmission line as in Patent Documents 1 and 2, it is necessary to arrange the transmission lines in parallel, and it is difficult to change the mounting angle. When an arcuate coupler is used, the mounting angle can be changed by matching the centers. Therefore, when a plurality of couplers are arranged concentrically, the mounting angle can be changed. However, the coupler arranged on the outer periphery has a longer coupler.

For example, when the total length (circumferential length) of the coupler is 10 mm, the bandwidth of the coupler is 4.5 GH, and a digital signal can be transferred at 6 Gbps (Patent Document 3). However, if the 16 channels are arranged concentrically apart from each other so as not to interfere with each other, the overall length of the outermost coupler becomes as long as about 400 mm. The bandwidth of the coupler is 1/40, and the transfer rate of the digital signal is also 1/40, which is 0.15 Gbps. Therefore, it cannot be used for a 4K display.

This problem has been solved in Patent Document 3 by making one of the coupler pairs shorter than the other. However, there remains a problem that the outer coupler is larger and the mounting area is larger.

The present invention has been made in view of the above-described problems, and has as its object to provide a small-sized electronic circuit board, a communication circuit, and a connection method thereof that can be connected in parallel even when the mounting angle is changed.

An electronic circuit board according to the present embodiment includes a first substrate and a plurality of first couplers formed on the first substrate for connecting the first electronic circuit and the second electronic circuit. And K (K is an integer of 4 or more) of the first couplers on the circumference of the first circle in plan view of the first substrate. , And (m × K) (m is an integer of 1 or more) first concentric circles on the circumference of a second circle larger than the first circle. Are arranged at intervals, and the first coupler is arranged point-symmetrically with respect to the center of the first circle.

An electronic circuit board according to the present embodiment includes a first substrate and a plurality of first couplers formed on the first substrate for connecting the first electronic circuit and the second electronic circuit. And K (K is an integer of 4 or more) of the first couplers on the circumference of the first circle in plan view of the first substrate. And the first coupler is disposed point-symmetrically with respect to the center of the first circle, and the first coupler is arranged radially or circumferentially of the first circle. 2 is a signal line coupler having signal lines arranged along the signal line coupler.

In the electronic circuit board described above, the first substrate may include a plurality of the first couplings in a plan view overlapping the second substrate of the second electronic circuit on which the plurality of second coupling units are provided. From the state where the first substrate is installed with respect to the second substrate so that the vessel is coupled with the plurality of second couplers, the first substrate is moved around the center of the first circle by 90 degrees. The plurality of the first couplers may be coupled to the plurality of the second couplers in a state where the first coupler is rotated.
In the above electronic circuit board, a port provided for taking out an input / output wiring connected to the first coupler may be provided at one end of the first board.

In the electronic circuit board described above, a lead transmission line may be drawn from the first coupler toward an inside of the first circle.

In the electronic circuit board described above, an extraction transmission line may be extended from the first coupler toward an outside of the first circle.

In the electronic circuit board described above, the K first couplers may be a coupler group, and a plurality of the coupler groups may be arranged rotationally symmetrically.
In the above electronic circuit, the plurality of first couplers may be arranged so as not to overlap with each other.

A communication circuit according to the present embodiment is a communication circuit including a first electronic circuit board, and a second electronic circuit board arranged to face the first electronic circuit board, wherein the first electronic circuit board is 2. The electronic circuit board according to claim 1, wherein the second electronic circuit board includes a second substrate, and a plurality of second couplers formed on the second substrate. Of the second couplers, L second couplers are arranged on the circumference of a third circle having the same size as the first circle, and (m × L) The second coupler is disposed on the circumference of a fourth circle having the same size as the second circle, and the L first couplers on the circumference of the third circle in plan view. When two couplers overlap the L first couplers, L communication paths are formed, and the (m × L) on the circumference of the fourth circle in plan view. The (m × L) communication paths are formed by overlapping the (m × L) first couplers with the second couplers.

A communication circuit according to the present embodiment is a communication circuit including a first electronic circuit board, and a second electronic circuit board arranged to face the first electronic circuit board, wherein the first electronic circuit board is 3. The electronic circuit board according to claim 2, wherein the second electronic circuit board includes a second substrate and L (L is an integer of 2 to K) formed on the second substrate. 2 couplers, wherein the L second couplers are arranged on the circumference of a third circle having the same size as the first circle, and the L couplers are viewed in plan. L communication paths are formed by laminating the first substrate and the second substrate so that the second couplers and the L first couplers overlap each other. Have been.

An electronic circuit board according to the present embodiment includes a first substrate and a plurality of first couplers formed on the first substrate for connecting the first electronic circuit and the second electronic circuit. Wherein K (K is an integer of N or more) K first couplers are spaced along the sides of a regular N-sided polygon (N is an integer of 3 or more). And the K first couplers are arranged N times rotationally symmetric with respect to the center of the regular N-gon.

In the above electronic circuit board, the first coupler may be formed in an arc shape.

In the above electronic circuit board, a port provided for taking out an input / output wiring connected to the first coupler may be arranged at one end of the first board.
In the electronic circuit board described above, the plurality of first couplers may be arranged so as not to overlap with each other.

A communication circuit comprising a first electronic circuit board and a second electronic circuit board, wherein the first electronic circuit board is the electronic circuit board, and the second electronic circuit board is a second substrate And L (L is an integer of 2 or more and K or less) K second couplers formed on the second substrate, wherein the L second couplers include the regular N-gon The first couplers are arranged on the sides of a regular N-sided polygon having the same size, and the L second couplers and the L first couplers overlap in plan view. By stacking the substrate and the second substrate, L communication paths are formed.

A connection method for connecting a first electronic circuit board and a second electronic circuit board, wherein the first electronic circuit board includes a first board and a plurality of first couplings provided on the first board. Wherein the second electronic circuit board comprises: a second substrate; and a plurality of second couplers provided on the second substrate. (K is an integer of 2 or more) of the first couplers are arranged N times (N is an integer of 2 or more) in rotational symmetry, and L (L is an integer of 2 or more and K or less) The first connector and the second connector overlap each other to form L communication paths, and the mounting angle between the first electronic circuit board and the second electronic circuit board is set to 360. The first electronic circuit board and the second electronic circuit board are stacked as ° × n / N (n is any integer from 0 to less than N).

According to the present embodiment, it is possible to provide a small-sized electronic circuit board, a communication circuit, and a connection method thereof that can be connected in parallel even when the mounting angle is changed.

It is a top view which shows the structure of an arc-shaped coupler. FIG. 2 is a plan view showing an arrangement of a coupler in the electronic circuit according to the first exemplary embodiment; It is a figure showing composition of a coupler using two parallel signal lines. FIG. 13 is a plan view showing an arrangement of a coupler in the electronic circuit according to the first modification. FIG. 3 is a diagram illustrating a configuration of a coupler using one signal line. FIG. 13 is a plan view showing an arrangement of a coupler in an electronic circuit according to a second modification. FIG. 15 is a plan view showing an arrangement of a coupler in an electronic circuit according to a third modification. FIG. 15 is a plan view showing an arrangement of a coupler in an electronic circuit according to Modification 4. 15 is a plan view illustrating an arrangement of a coupler in an electronic circuit according to Modification Example 5. FIG. FIG. 13 is a plan view showing an arrangement of a coupler in the electronic circuit according to the second exemplary embodiment; It is a top view for explaining two couplers which overlap. It is a top view showing arrangement of a coupler when a substrate is rotated. FIG. 21 is a plan view illustrating an arrangement of a coupler in an electronic circuit according to a sixth modification. FIG. 21 is a plan view showing an arrangement of a coupler in an electronic circuit according to a modification 7.

The electronic circuit board (also simply referred to as an electronic circuit) according to the present embodiment includes a board and a plurality of couplers formed on the board. Two or more electronic circuits perform data communication using electromagnetic coupling by a coupler. Specifically, the substrates are stacked so that the respective couplers face each other. Opposing couplers are coupled by electric field coupling (capacitive coupling) and / or magnetic field coupling (inductive coupling). Therefore, the two electronic circuits are communication circuits for transmitting and receiving data. Further, since electromagnetic field coupling is used, data can be communicated without contact.

The -coupler can be, for example, transmission lines arranged in parallel with each other so as to be coupled as a distributed constant system with an electric field and a magnetic field. Alternatively, the coupler may be a coil (inductive coupler) that is arranged in an overlapping manner so as to perform magnetic field coupling (inductive coupling) as a lumped constant system. Alternatively, the couplers can be electrodes arranged in parallel with each other so as to perform electric field coupling (capacitive coupling) as a lumped constant system.

The substrate on which the coupler is formed is not particularly limited, and various substrates can be used. For example, the substrate may be an insulating substrate such as a printed circuit board (PCB) or a flexible printed circuit board (FPC board), or may be a semiconductor substrate such as a silicon substrate. The coupler is configured by wiring on a substrate. For example, when the coupler is formed on a semiconductor substrate such as a silicon substrate, the electronic circuit can be configured as one semiconductor chip.

Embodiment 1
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The configuration of the coupler mounted on the electronic circuit board according to the present embodiment will be described with reference to FIG. FIG. 1 is a plan view schematically showing the configuration of two coupler elements 41 and 51. FIG. In the following description, a plane parallel to the principal surface (substrate surfaces 47 and 57) of the substrate on which the coupler 43 and the coupler 53 are formed is defined as an XY plane. That is, the XY plane is a plane orthogonal to the direction in which the substrates are stacked (the Z direction).

The coupler element 41 is formed on the substrate surface 47 of the first substrate, and the coupler element 51 is formed on the substrate surface 57 of the second substrate. The coupler elements 41 and 51 shown in FIG. 1 have the same configuration as the coupler shown in FIG. Specifically, a coupler 43 as a first coupler is formed on the substrate surface 47. The coupler 43 is a signal line formed in an arc shape. An extraction transmission line 44 is connected to one end of the arc-shaped coupler 43, and an extraction transmission line 45 is connected to the other end. For example, a positive signal of the differential signal is input or output to the extraction transmission line 44, and a negative signal of the differential signal is input or output to the extraction transmission line 45. That is, a signal is input or output to the coupler 43 via the extraction transmission lines 44 and 45.

Similarly, a coupler 53 as a second coupler is formed on the substrate surface 57 of the second substrate. The second coupler 53 is a signal line formed in an arc shape. An extraction transmission line 54 is connected to one end of the arc-shaped coupler 53, and an extraction transmission line 55 is connected to the other end.

結合 The coupler 43 and the coupler 53 are coupled in a state where the two substrates are stacked and arranged. That is, the substrates are stacked such that the coupler 43 and the coupler 53 overlap. The radii of curvature of the coupler 43 and the coupler 53 are the same. Further, the size of the coupler 43 and the coupler 53 are the same. That is, the angles of the arcs of the coupler 43 and the coupler 53 are the same. Further, couplers 43 and 53 are formed over substantially the entire circumference of the circle. For example, it is desirable that the center angles of the arc-shaped couplers 43 and 53 be 350 ° or more.

By doing so, the coupler 43 and the coupler 53 can be coupled even when the substrate is rotated at an arbitrary angle in the XY plane. That is, if the XY positions of the centers of the couplers 43 and 53 coincide, most of the coupler 43 overlaps most of the coupler 53 at all 360 ° rotation angles. Thereby, the coupler 43 and the coupler 53 are electrically coupled. When the total length (circumferential length) of the couplers 43 and 53 is 10 mm, the bandwidth of the couplers 43 and 53 is 4.5 GH, and a digital signal can be transferred at 6 Gbps.

In the first embodiment, a plurality of couplers 43 or 53 shown in FIG. 1 are formed on a substrate. The arrangement of the coupler will be described with reference to FIG. FIG. 2 is an XY plan view showing a configuration of the electronic circuits 100 and 110 having a plurality of couplers. The electronic circuit 100 and the electronic circuit 110 become a communication circuit for communicating data by electromagnetic field coupling by a coupler.

The electronic circuit 100 includes a substrate 101, a port 102, and 16 couplers 43-1 to 43-16. The couplers 43-1 to 43-16 respectively correspond to the coupler 43 shown in FIG. 1, and are collectively referred to as the coupler 43 unless otherwise specified. Similarly, the electronic circuit 110 includes a substrate 111, a port 112, and 16 couplers 53-1 to 53-16. The couplers 53-1 to 53-16 respectively correspond to the coupler 53 of FIG. 1, and are collectively referred to as the coupler 53 unless otherwise specified.

In the electronic circuit 100 and the electronic circuit 110, the arrangement of the 16 couplers is the same, and only the angle of the substrate is different. That is, the coupler 43 of the electronic circuit 100 and the coupler 53 of the electronic circuit 110 are arranged in the same layout, but the angles of the substrate 101 and the substrate 111 are different. The substrate 111 is rotated clockwise by 45 ° as compared with the substrate 101. The angle of the substrate 101 is 0 °, and the angle of the substrate 111 is 45 °.

(4) Since the electronic circuit 110 and the electronic circuit 100 have the same configuration, the following description mainly describes the configuration of the electronic circuit 100. The substrate 101 has a regular octagon. On the substrate 101, the couplers 43-1 to 43-16 are arranged at intervals so as not to interfere with each other. For example, the couplers 43-1 are arranged at intervals so that crosstalk from the other couplers 43-2 to 43-16 is sufficiently small. The couplers 43-1 to 43-16 do not overlap each other.

ポ ー ト Port 102 is provided at one end of substrate 101. Here, the port 102 is provided at the end on the −Y side, that is, one side of a regular octagon parallel to the X direction. The port 102 is a wiring port from which the input / output wiring 103 connected to the couplers 43-1 to 43-16 is drawn out. That is, a plurality of input / output wirings 103 connected to the couplers 43-1 to 43-16 are led out from the port 102 in a lump. The input / output wiring 103 is connected to the couplers 43-1 to 43-16 via a wiring (not shown) formed on the substrate 101.

The couplers 43-1 to 43-8 are arranged on the circumference of the circle C1 at a predetermined interval. The eight couplers 43-1 to 43-8 are arranged point-symmetrically with respect to the center O1 of the circle C1. For example, the couplers 43-1 and 43-5 are arranged point-symmetrically with respect to the center O1. In the circumferential direction of the circle C1, eight couplers 43-1 to 43-8 are arranged at equal intervals. That is, the eight couplers 43-1 to 43-8 are arranged at 45 ° (= 360 ° / 8) intervals on the circumference of the circle C1. The couplers 43-1 to 43-8 are arranged equidistant from the center O1. The couplers 43-1 to 43-8 are all arcs of the same size. Therefore, the layout of the couplers 43-1 to 43-8 is eight times rotationally symmetric with respect to the center O1.

The couplers 43-9 to 43-16 are arranged on the circumference of the circle C2 at a predetermined interval. The circle C2 and the circle C1 are concentric circles. The diameter of the circle C2 is larger than the diameter of the circle C1. The eight couplers 43-9 to 43-16 are arranged point-symmetrically with respect to the center O1 of the circle C2. For example, the coupler 43-9 and the coupler 43-13 are arranged point-symmetrically with respect to the center O1. In the circumferential direction of the circle C2, eight couplers 43-9 to 43-16 are arranged at equal intervals. That is, the eight couplers 43-9 to 43-16 are arranged at 45 ° (= 360/8) intervals on the circumference of the circle C2. The couplers 43-9 to 43-16 are arranged equidistant from the center O1. The couplers 43-9 to 43-16 are all arcs of the same size. Therefore, the layout of the couplers 43-9 to 43-16 is rotationally symmetric eight times with respect to the center O1. The couplers 43-1 to 43-16 are arranged eight times rotationally symmetrically with respect to the center O1.

の 通 り As described above, the electronic circuit 110 has the same configuration as the electronic circuit 100. The board 111 and the port 112 correspond to the board 101 and the port 112 of the electronic circuit 100. The input / output wiring 113 is connected to the port 112.

The couplers 53-1 to 53-16 have the same layout as the couplers 43-1 to 43-16. However, in FIG. 2, the angle of the substrate 111 is rotated by 45 °. That is, the position of the port 102 is different from the position of the port 112. That is, the port 112 is arranged on the side adjacent to the −Y side of the regular octagonal substrate 111. Therefore, the take-out directions of the input / output wiring 103 and the input / output wiring 113 are different by 45 °.

８Eight couplers 53-1 to 53-8 are arranged at intervals on the circumference of the circle C3. The couplers 53-1 to 53-8 are arranged point-symmetrically with respect to the center O2. In the circumferential direction of the circle C3, eight couplers 53-1 to 53-8 are arranged at equal intervals every 45 °. Therefore, the layout of the couplers 53-1 to 53-8 is rotationally symmetric eight times with respect to the center O2.

８Eight couplers 53-9 to 53-16 are arranged on the circumference of the circle C4. The couplers 53-9 to 53-16 are arranged point-symmetrically. In the circumferential direction of the circle C4, eight couplers 53-9 to 53-16 are arranged at regular intervals of 45 °. Therefore, the layout of the couplers 53-9 to 53-16 is rotationally symmetric eight times with respect to the center O2. The circle C3 and the circle C4 are concentric circles. The couplers 53-1 to 53-16 are arranged eight times rotationally symmetrically with respect to the center O2. The diameter of the circle C4 is larger than the diameter of the circle C3. Circles C3 and C1 have the same diameter, and circles C4 and C2 have the same diameter.

基板 The substrate 101 and the substrate 111 are regular octagons of the same size. The center of the substrate 101 coincides with the center O1 of the circle C1. The center of the substrate 111 coincides with the center O2 of the circle C3. Note that the centers of the substrates 101 and 111 do not have to coincide with the centers O1 and O2 of the circles C1 and C3. The couplers 43-1 to 43-16 and the couplers 53-1 to 53-16 are all arcs of the same size.

基板 The substrate 101 and the substrate 111 are stacked such that the center O1 and the center O2 coincide. When the substrate 101 and the substrate 111 are stacked, the 16 couplers 43-1 to 43-16 and the 16 couplers 53-1 to 53-16 overlap each other in the XY plane view. Specifically, the combiner 43-1 and the combiner 53-8 overlap, and the combiner 43-2 and the combiner 53-1 overlap. Similarly, combiners 43-3 to 43-8 overlap with combiners 53-2 to 53-7, respectively. Also, the combiner 43-9 and the combiner 53-16 overlap, and the combiner 43-10 and the combiner 53-9 overlap. The couplers 43-11 to 43-16 overlap the couplers 53-10 to 53-15, respectively. Even if the angle between the substrate 101 and the substrate 111 is different by 45 °, one of the couplers 43-1 to 43-16 is paired with one of the couplers 53-1 to 53-16 and overlaps. The 16 pairs of couplers can be electromagnetically coupled to form 16 communication paths.

８As described above, the eight couplers 43 and 53 are arranged point-symmetrically along the circumference. For this reason, even when the angle of the substrate 111 is (360 ° / 8) × n (n is an integer of 0 or more and less than 8), the couplers 43-1 to 43-16 are connected to the couplers 53-1 to 43-16, respectively. It overlaps with any of 1 to 53-16. That is, even if the rotation angle of the substrate 111 is 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, or 315 °, the 16 pairs of couplers can be electromagnetically coupled. In other words, if it is a multiple of 45 °, the mounting angle between the substrate 101 and the substrate 111 can be set to an arbitrary angle. The mounting angle between the substrate 101 and the substrate 111 is a relative angle.

取 付 The mounting angle of the substrate 111 with respect to the substrate 101 can be changed every 45 °. All the couplers 43 of the electronic circuit 100 can be electrically coupled to the coupler 53 of the electronic circuit 110 of the communication partner. Therefore, data can be transmitted and received in parallel through 16 communication paths, and high-speed data communication can be performed. Further, in the XY plane view, the wiring can be taken out in a state where the port 102 and the port 112 do not overlap. Even if the board 101 provided with the coupler 43 and the board 111 provided with the coupler 53 have the same configuration, the mounting angle can be changed. With the configuration of the present embodiment, it is possible to realize a high-speed and small-sized electronic circuit that can be connected in parallel by changing the mounting angle. Further, since the position of the port can be shifted, it is possible to contribute to a reduction in the thickness of the communication circuit.

よ う By doing so, the positions of the ports 102 and 112 are not limited, so that the degree of freedom in designing a non-contact type connector can be increased. For example, the electronic circuit 100 is mounted on a connector of a display, and the electronic circuit 110 is mounted on a connector of a setup box. The direction in which the input / output wires of the connector on the display side and the connector on the setup box side are taken out can be changed. For example, when the pull-out direction of the input / output wirings 103 and 113 is changed by 180 °, the input / output wiring is pulled out to the inside of the display, and the connector on the setup box side is drawn out of the display. Become. Furthermore, since it is a non-contact type connector, a crimped portion is not required, which can contribute to a reduction in thickness.

Furthermore, the electronic circuit 100 and the electronic circuit 110 can have the same layout. Therefore, electronic circuits of the same design can be used. For example, it is not necessary to change the design between the connector for the display and the connector for the setup box. Therefore, since parts can be shared, manufacturing costs can be suppressed. Further, by disposing the couplers at equal intervals on the circumference, the interval between the couplers can be increased. Therefore, it is not necessary to increase the size of the circle in order to reduce interference between couplers, so that the mounting area can be reduced.

Next, the azimuth at which the coupler 43 on the circle C1 and the coupler 43 on the circle C2 are arranged will be described. The azimuth is an angle based on the center O1. For example, the azimuth of the azimuth extending from the center O1 in the + Y direction is 0 °, and the azimuth of the azimuth extending from the center O1 in the + X direction is 90 °. The azimuth angles of the couplers 43-1 to 43-8 are 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, and 315 °, respectively. The azimuth angles of the couplers 43-9 to 43-16 are 22.5 °, 67.5 °, 112,5 °, 157.5 °, 202.5 °, 247.5 °, 292.5, respectively. ° and 337.5 °.

結合 In the circumferential direction, the coupler 53 on the circle C2 is arranged between two adjacent couplers 43 on the circle C1. Further, the coupler 53 on the circle C1 is arranged between two adjacent couplers 43 on the circle C2 in the circumferential direction. That is, in the circumferential direction, the couplers 43 on the circle C1 and the couplers 53 on the circle C2 are alternately arranged. The azimuth of the coupler 43 on the circle C1 is different from the azimuth of the coupler 43 on the circle C2. By doing so, the distance between the coupler 43 on the circle C1 and the coupler 43 on the circle C2 can be increased. The same applies to the azimuth of the coupler 53 of the electronic circuit 110.

On the other hand, for example, when the coupler 43 on the circle C1 and the coupler 43 on the circle C2 are arranged at the same azimuth, in order to increase the interval between the couplers 43, the diameter of the circle C1 and the diameter of the circle C2 are reduced. The difference needs to be large. Therefore, by adopting the configuration shown in FIG. 2, the distance between the couplers 43 can be increased without increasing the diameter of the circle C2. Therefore, the size of the electronic circuit 100 can be reduced.

Next, the drawing directions of the leading transmission line 44 and the leading transmission line 45 of the coupler 43 will be described. Leading transmission lines 44 and 45 provided in the couplers 43-1 to 43-16 are led out. Leading transmission lines 44 and 45 are connected to the coupler 43 from the outer peripheral side of the substrate. Therefore, the outgoing transmission lines 44 and 45 of the couplers 43-1 to 43-16 are radially arranged. The lead transmission line 44 and the lead transmission line 45 are drawn from the coupler 43 to the outer peripheral side.

引 The outgoing transmission lines 44 and 45 of the two couplers 43 arranged at point symmetric positions are drawn out in parallel and opposite directions to each other. For example, in the couplers 43-1 and 43-5 arranged at point symmetric positions with respect to the center O1, the extraction transmission lines 44-1 and 45-1 and the extraction transmission lines 44-5 and 45-5 are parallel and parallel. It has been pulled out in the opposite direction. Specifically, the extraction transmission lines 44-1 and 45-1 are extracted from the coupler 43-1 in the + Y direction. The outgoing transmission lines 44-1 and 45-1 of the coupler 43-5 are led out of the coupler 43-5 in the -Y direction. Note that the outgoing transmission lines 54 and 55 are provided in the same direction as the coupler 53 of the electronic circuit 110.

Accordingly, the outgoing transmission lines 44 and 45 can detour outside the circle. By doing so, the influence on the coupler can be reduced as compared with the case where the extraction transmission line passes through the inside of the circle.

In the above configuration, the coupler 43 is arranged along the two circles C1 and C2, but the coupler 43 may be arranged along three or more concentric circles. Alternatively, the coupler 43 may be arranged along only one circle C1.

In the above configuration, the eight couplers 43 are arranged on the circumference of one circle (the circle C1 or the circle C2). The number is not limited to eight. That is, K (K is an integer of 2 or more) couplers 43 may be rotationally symmetrically arranged on the circle C1. For example, when K = 2, the mounting angle can be changed every 180 °, and when K = 4, it can be changed every 90 °. That is, it can be changed every (360 ° / K). By setting K to a multiple of 4, the mounting angle can be changed every 90 °.

When the couplers 43 are arranged on the two circles C1 and C2, the number of couplers 43 on the circle C1 and the number of couplers on the circle C2 do not have to be the same. For example, the number of couplers 43 on the circle C1 can be four, and the number of couplers 43 on the circle C2 can be eight. When the number of couplers 43 on the smallest circle C1 is K, it is preferable that the number of couplers be an integral multiple of K on a circle C2 larger than the circle C1. That is, it is preferable to arrange (m × K) (m is an integer of 1 or more) couplers 43 on the circle C2.

In FIG. 2, the substrates 101 and 111 are regular octagons, but the shapes of the substrates 101 and 111 are not particularly limited. For example, the substrates 101 and 111 may be circular, square or rectangular. Further, the shape and size of the substrate 101 and the substrate 111 may be different.

As described above, the combination of the coupler 43 and the coupler 53 forming a pair changes depending on the mounting angle of the board 101 and the board 111. If the mounting angle is unknown, the data may be transmitted in order from the couplers 43-1 to 43-16, and the receiver on the electronic circuit 110 side may restore the data. By performing such a communication test in advance, the combination of the coupler 43 and the coupler 53 can be confirmed. Further, even when data is inverted depending on the rotation angle, that is, when 0 becomes 1 and 1 becomes 0, the presence or absence of the inversion can be confirmed by a communication test in advance.

Modification 1
In the first modification, the shape of the coupler is different. The configuration of the coupler used in the first modification will be described with reference to FIG. FIG. 3 is a conceptual perspective view showing the configuration of the coupler in the inter-module communication device. FIG. 3 shows the configuration of the coupler of the two modules 10a and 10b. The modules 10a and 10b have the same configuration, and for example, the module shown in FIG. 33 of Patent Document 1 can be used. Therefore, a detailed description is omitted.

The module 10a includes a substrate 11a, a signal line 12a, a resistor 17a, a semiconductor integrated circuit device 15a, a feedback signal line 24a, an extraction transmission line 25a, and an extraction transmission line 26a. On the substrate 11a, a signal line 12a, a resistor 17a, a semiconductor integrated circuit device 15a, a feedback signal line 24a, and an extraction transmission line 25a are formed.

The signal line 12a and the feedback signal line 24a are arranged in parallel. Here, the Y direction is shown as a direction parallel to the longitudinal direction of the signal line 12a and the feedback signal line 24a, and the X direction is shown as a direction parallel to the lateral direction (width direction). The signal line 12a and the feedback signal line 24a are formed linearly along the Y direction. The signal line 12a and the feedback signal line 24a are formed at a constant interval.

The signal line 12a and the feedback signal line 24a are matched and terminated using the resistor 17a. The signal line 12a is connected to the semiconductor integrated circuit device 15a via an extraction transmission line 25a. The feedback signal line 14a is connected to the semiconductor integrated circuit device 15a via an extraction transmission line 26a. The lead transmission line 25a and the lead transmission line 26a are arranged parallel to each other along the Y direction. The semiconductor integrated circuit device 15a includes a transceiver that processes digital signals and transmits and receives the signals.

構成 The configuration of the module 10b is the same as that of the module 10a. That is, the substrate 11b, the signal line 12b, the resistor 17b, the semiconductor integrated circuit device 15b, the feedback signal path 24b, the lead transmission line 25b, and the lead transmission line 26b are respectively composed of the substrate 11a, the signal line 12a, the resistor 17a, and the semiconductor integrated circuit. It corresponds to the circuit device 15a, the feedback signal path 24a, the outgoing transmission line 25a, and the outgoing transmission line 26a. Therefore, detailed description is omitted.

In the XY plane, the signal line 12a and the signal line 12b overlap, and the feedback signal line 14a and the feedback signal line 14b overlap. Therefore, electromagnetic field coupling occurs at the overlapping portion of the signal line 12a and the signal line 12b and at the overlapping portion of the feedback signal line 14a and the feedback signal line 14b. The signal line 12b and the feedback signal line 14b form a coupler 63 of the module 10a, and the signal line 12b and the feedback signal line 14b form a coupler 64 of the module 10b. The coupler 63 includes a pair of linear signal lines (the signal line 12a and the feedback signal line 24a). The coupler 64 is constituted by a pair of linear signal lines (the signal line 12b and the feedback signal line 24b).

It is preferable that the extraction transmission line 25a and the extraction transmission line 26a are not coupled to the extraction transmission line 25b and the extraction transmission line 26b, respectively. Therefore, the line width of the extraction transmission line 25a, the extraction transmission line 26a, the extraction transmission line 25b, and the extraction transmission line 26b is made smaller than the line width of the signal line 12a, the signal line 12b, the feedback signal path 24a, and the feedback signal path 24b. Is preferred. Alternatively, on the XY plane, a different layout may be adopted so that the leading transmission line 25a and the leading transmission line 26a do not overlap with the leading transmission line 25b and the leading transmission line 26b.

Next, the configuration of the electronic circuits 200 and 210 having a plurality of couplers will be described with reference to FIG. FIG. 4 is an XY plan view showing the configuration of the electronic circuits 200 and 210. In the electronic circuit 200, the arrangement of the substrate 201, the port 202, the input / output wiring 203, and the coupler 63 is the same as the arrangement of the substrate 101, the port 102, the input / output wiring 103, and the coupler 43 shown in FIG. ing. In the electronic circuit 210, the arrangement of the couplers 63 and 64 is the same as the arrangement of the couplers 43 and 53 in FIG. That is, the basic configuration other than the shape of the coupler is the same as that of FIG. Therefore, description of contents overlapping with the contents of Embodiment 1 will be appropriately omitted.

Also in the first modification, eight couplers 63-1 to 63-8 are arranged at intervals on the circumference of the circle C1. Eight couplers 63-1 to 63-8 are arranged point-symmetrically with respect to the center O1 of the circle C1. Eight couplers 63-9 to 63-16 are arranged at intervals on the circumference of the circle C2. Eight couplers 63-9 to 63-16 are arranged point-symmetrically with respect to the center O1 of the circle C2.

８Eight couplers 64-1 to 64-8 are arranged at intervals on the circumference of the circle C3. Eight couplers 64-1 to 64-8 are arranged point-symmetrically with respect to the center O2 of the circle C3. Eight couplers 64-9 to 64-16 are arranged at intervals on the circumference of the circle C4. Eight couplers 64-9 to 64-16 are arranged point-symmetrically with respect to the center O2 of the circle C4.

Furthermore, the coupler 63 is composed of two parallel signal lines (the signal line 12a and the feedback signal line 14a in FIG. 3). In the present embodiment, the directions of the signal lines of the couplers 63-1 to 63-8 are set to the radial direction of the circle C1. Similarly, the direction of the signal lines of the couplers 63-9 to 63-16 is set to the radial direction of the circle C2. The longitudinal directions of the couplers 63-1 to 63-8 and 63-9 to 63-16 are parallel to the radial directions of the circles C1 and C2. That is, the signal lines of the couplers 63-1 to 63-16 are formed radially. For example, the signal line of the coupler 63-1 is formed in parallel with the direction (-Y direction) from the coupler 63-1 toward the center O1. Therefore, the couplers 63-1 to 63-16 are arranged eight times rotationally symmetrically with respect to the center O1.

The direction of the two parallel signal lines (the signal line 12b and the feedback signal line 14b in FIG. 3) of the couplers 64-1 to 64-8 is set to the radial direction of the circle C3, and the couplers 64-9 to 64- The direction of the 16 signal lines is the radial direction of the circle C4. The longitudinal directions of the couplers 64-1 to 64-8 and the couplers 64-9 to 64-16 are parallel to the radial directions of the circles C3 and C4. That is, the signal lines of the couplers 64-1 to 64-16 are also formed radially. For example, the coupler 64-2 is formed parallel to the direction (−X direction) from the coupler 64-2 toward the center O2. Therefore, the couplers 64-1 to 64-16 are arranged eight times rotationally symmetrically with respect to the center O2.

By stacking the substrate 201 and the substrate 202 so that the center O1 and the center O2 coincide with each other, the couplers 63-1 to 63-16 and the couplers 64-1 to 64-16 as in the first embodiment. And overlap. As a result, the 16 pairs of couplers are electromagnetically coupled. The couplers 63-1 to 63-16 are rotationally symmetric eight times. The couplers 64-1 to 64-16 are rotationally symmetric eight times. As in the first embodiment, the rotation angle of the substrate 211 can be changed every 45 °. Note that the longitudinal direction of the couplers 63 and 64 is not limited to the radial direction, and may be inclined by a certain angle from the radial direction.

In addition, in the first embodiment, the positioning portion 65 is formed on the substrate 201, and the positioning portion 66 is formed on the substrate 211. The positioning portions 65 and 66 are arranged near each side of the regular octagonal substrates 201 and 211. That is, on the substrates 201 and 211, the eight positioning portions 65 and 66 are provided in directions of 45 °. The positioning section 65 is disposed on the outer peripheral side of the couplers 63-1 to 63-16, and the positioning section 66 is disposed on the outer peripheral side of the couplers 64-1 to 64-16.

基板 The substrates 501 and 511 are detachably fixed by the positioning portions 65 and 66. As the positioning portions 65 and 66, for example, permanent magnets can be used. When the substrates 201 and 211 are stacked, the positioning section 65 and the positioning section 66 are arranged to face each other. The positioning portion 65 and the positioning portion 66 that are arranged to face each other are attracted by magnetic force. By doing so, it is possible to prevent the mounting angle from shifting. For example, if the mounting angle deviates from 45 °, the overlapping area of the coupler 63 and the coupler 64 becomes small. Therefore, the capacity formed by the couplers 63 and 64 decreases due to the shift of the mounting angle.

Therefore, as shown in the present embodiment, by using the positioning portions 65 and 66, it is possible to prevent the displacement between the couplers. That is, the attractive force of the magnets of the positioning portions 65 and 66 acts so that the mounting angle becomes 45 ° × n. Thereby, since the positional accuracy can be increased, it is possible to prevent the coupling performance of the couplers 63 and 64 from deteriorating. Further, the positioning portions 65 and 66 are not limited to magnets. For example, the positioning portions 65 and 66 may be formed using a mechanical fitting structure. Of course, the number of the positioning portions 65 and 66 is not limited to eight.

位置 決 め Thus, it is preferable to provide the positioning portions 65 and 66 on the substrates 201 and 211. The positioning parts 65 and 66 set the substrates to be stacked at a desired mounting angle. That is, the positioning portions 65 and 66 limit the displacement so that the mounting angle between the substrates matches a multiple of 45 °.

で は In the present embodiment, a plurality of couplers are arranged rotationally symmetrically on the circumference. In this way, even when the linear couplers 63 and 64 are used, the mounting angle between the substrates can be changed every 90 °. For example, when linear couplers 63 and 64 are arranged in an array of three rows and three columns as in Patent Document 4, the longitudinal direction of the couplers is rotated by 90 °, so that it becomes difficult to couple. On the other hand, in the present embodiment, the couplers 63 and 64 can be overlapped even when rotated by 90 ° or 45 °.

同 様 Similar to the first embodiment, the outgoing transmission line 25a and the outgoing transmission line 26a are drawn out of the coupler 63 toward the outer circumferences of the circles C1 and C2. The lead transmission line 25a and the lead transmission line 26a are formed radially. Therefore, the outgoing transmission line 25a and the outgoing transmission line 26a can detour outside the circles C1 and C2. By doing so, the influence on the coupler 43 can be reduced as compared with the case where the extraction transmission line 25a and the extraction transmission line 26a penetrate the inside of the circle C1.

Modification 2
In Modification 2, the shape of the coupler is different from those in Embodiments 1 and 1. FIG. 5 is a diagram illustrating a configuration of a coupler according to the second modification. FIG. 5 shows a plan configuration of the coupler of the two modules 10a and 10b. The modules 10a and 10b have the same configuration, and for example, the module shown in FIG.

The module 10a includes a first substrate 11a, a signal line 12a, and lead-out transmission lines 13a and 14a. On the first substrate 11a, a signal line 12a and lead-out transmission lines 13a and 14a are formed. The signal line 12a is a rectangular pattern with the X direction as the longitudinal direction and the Y direction as the lateral direction. That is, the signal line 12a is formed by a signal line extending in the X direction. An extraction transmission line 13a is connected to one end of the signal line 12a in the X direction, and an extraction transmission line 14a is connected to the other end. A positive differential signal is input to the extraction transmission line 13a, and a negative differential signal is input to the extraction transmission line 14a. The line width of the signal line 12a is wider than the line widths of the extraction transmission lines 13a and 14a.

The module 10b includes a second substrate 11b, a signal line 12b, and lead-out transmission lines 13b and 14b. Module 10b has the same configuration as module 10a. The signal line 12b and the signal line 12b have substantially the same size. The first substrate 11a and the second substrate 11b are stacked such that the signal line 12a and the signal line 12b overlap in the XY plan view. Therefore, the signal line 12a and the signal line 12b are electromagnetically coupled.

FIG. 6 is a plan view showing the arrangement of the coupler shown in FIG. In FIG. 6, the signal line 12a is simplified as a coupler 73, and the signal line 12b is simplified as a coupler 74. FIG. 6 shows an electronic circuit 300 having 16 couplers 73 and an electronic circuit 310 having 16 couplers 74. In FIG. 6, a board, a port, and the like are omitted.

結合 Similar to the first and second modifications, the couplers 73-1 to 73-8 are arranged on the circumference of the circle C1. The couplers 73-1 to 73-8 are arranged point-symmetrically with respect to the center O1 of the circle C1. The couplers 73-9 to 73-16 are arranged on the circumference of the circle C2, and are arranged point-symmetrically with respect to the center O1 of the circle C2. The couplers 74-1 to 74-8 are arranged on the circumference of the circle C3. The couplers 74-1 to 74-8 are arranged point-symmetrically with respect to the center O2 of the circle C3. The couplers 74-9 to 74-16 are arranged on the circumference of the circle C4, and are arranged point-symmetrically with respect to the center O2 of the circle C4.

Furthermore, the longitudinal directions of the couplers 73-1 to 73-8 and 73-9 to 73-16 are parallel to the tangential directions of the circles C1 and C2. Therefore, the couplers 73-1 to 73-16 are rotationally symmetric eight times with respect to the center O2. The longitudinal directions of the couplers 74-1 to 74-8 and 74-9 to 74-16 are parallel to the tangential directions of the circles C3 and C4. Therefore, the couplers 74-1 to 74-16 are rotationally symmetric eight times with respect to the center O2.

By stacking the electronic circuit 300 and the electronic circuit 310 so that the center O1 and the center O2 coincide with each other, the couplers 73-1 to 73-16 and the couplers 73-1 to 73-16 are stacked as in the first embodiment and the first modification. 74-1 to 74-16 overlap. As a result, the 16 pairs of couplers are electromagnetically coupled. As in the first embodiment, the rotation angle of the substrate can be changed every 45 °.

Also, similarly to the lead transmission lines 44 and 45 of the first embodiment, the lead transmission lines 13a and 14a are drawn out from the coupler 73 to the outside. The outgoing transmission lines 13a and the outgoing transmission lines 14a of the 16 couplers 43 are formed radially. Therefore, the extraction transmission line 13a and the extraction transmission line 14a can detour outside the circles C1 and C2. By doing so, the influence on the coupler can be reduced as compared with the case where the extraction transmission line 13a and the extraction transmission line 14a penetrate the inside of the circle.

Modification 3
An electronic circuit according to Modification 3 will be described with reference to FIG. FIG. 7 is a plan view showing the arrangement of the couplers of the electronic circuits 400 and 410 according to the third modification. Although the couplers 63 and 64 shown in FIG. 3 are used, the coupler shown in FIG. 1 or FIG. 5 may be used. Note that the basic configurations of the electronic circuits 400 and 410 are the same as those of the first embodiment and the first and second modifications, and thus the description thereof will not be repeated. Note that input / output wiring is omitted in FIG.

Sixteen couplers 63-1 to 63-16 are arranged on the substrate 401 of the electronic circuit 400, and sixteen couplers 64-1 to 64-16 are arranged on the substrate 411 of the electronic circuit 410. ing. However, in the third modification, the arrangement of the sixteen couplers 63 and 64 is different from the arrangement of the first modification. Specifically, 16 couplers 63-1 to 63-16 are arranged on the circumference of the circle C1. Sixteen couplers 64-1 to 64-16 are arranged on the circumference of the circle C3.

The couplers 63-1 to 63-16 are arranged point-symmetrically with respect to the center O1 of the circle C1. Along the circumferential direction of the circle C1, sixteen couplers 63-1 to 63-16 are arranged at equal intervals of 22.5 °. The couplers 63-1 to 63-16 are arranged 16 times rotationally symmetrically with respect to the center O1.

The couplers 64-1 to 64-16 are arranged point-symmetrically with respect to the center O2 of the circle C3. Along the circumferential direction of the circle C3, 16 couplers 64-1 to 64-16 are arranged at equal intervals of 22.5 °. The couplers 64-1 to 64-16 are arranged 16 times rotationally symmetrically with respect to the center O2.

By laminating the electronic circuit 400 and the electronic circuit 410 such that the center O1 and the center O2 coincide with each other, the couplers 63-1 to 63-16 and the couplers 64-1 to 64- like in the above-described configuration. 16 overlaps. For example, the combiner 63-1 and the combiner 64-16 overlap. As a result, the 16 pairs of couplers are electromagnetically coupled.

In the third modification, the mounting angle between the substrate 401 and the substrate 411 can be changed every 22.5 ° (= 360 ° / 16). Therefore, in FIG. 7, the angle between the port 402 and the port 412 is different by 22.5 °. In FIG. 7, the substrates 401 and 411 are regular hexagons, but may be other shapes such as a circle. Also, in the third modification, the coupler may be arranged on the circumference of the circles C2 and C4. That is, the coupler may be arranged on the circumference of a double or more concentric circle.

Modification 4
An electronic circuit according to Modification 4 will be described with reference to FIG. 15 is a plan view showing electronic circuits 400 and 420 according to Modification Example 4. FIG. In the electronic circuit 400, similarly to FIG. 7, 16 couplers 63 are arranged at equal intervals on the circumference of the circle C1.

On the other hand, the electronic circuit 420 is provided with only four couplers 64. The number of couplers 63 of the electronic circuit 400 is different from the number of couplers 64 of the electronic circuit 420. Specifically, four couplers 64-1 to 64-4 are arranged on the circumference of the circle C3. The couplers 64-1 to 64-4 are arranged point-symmetrically with respect to the center O2. Here, the couplers 64-1 to 64-4 are arranged at equal intervals every 90 °.

で あ Even in this case, the mounting angle of the substrate 421 with respect to the substrate 401 can be changed every 22.5 °. For example, the four combiners 64-1 to 64-4 overlap with any of the combiners 63-1 to 63-16. In this case, on the substrate 401, four of the sixteen couplers 63 are coupled to the coupler 64. Since the couplers 64-1 to 64-4 are electromagnetically coupled, four parallel communication paths are formed. For example, one of the couplers 63-1 to 63-4 couples with the coupler 64.

For example, if the combiner 64-1 and the combiner 63-1 are arranged so as to overlap, the combiners 64-2 to 64-4 overlap the combiners 63-5, 63-9 and 63-13, respectively. When the substrate 421 is rotated by 22.5 ° and the coupler 64-1 and the coupler 63-2 are arranged so as to overlap with each other, the couplers 64-2 to 64-4 become the couplers 63-6 and 63-10. , 63-14. In this way, four parallel communication paths are formed.

In the electronic circuit 400, only the four couplers 63 are coupled to the coupler 64. That is, the remaining twelve couplers 63 are not coupled to the coupler 64. Therefore, the receiving circuit and the transmitting circuit can be shared for each of the four couplers 63. For example, four couplers 63-1 to 63-4 are connected in parallel to one transmitting / receiving circuit, and a switch is arranged between the couplers 63-1 to 63-4 and the transmitting / receiving circuit, and The switches are turned on and off according to the mounting angles of the electronic circuits 400 and 410. Of the four combiners 63-1 to 63-4, only one combiner 63-1 overlapping with combiner 64-1 is connected to the transmission / reception circuit. Therefore, the number of transmission / reception circuits can be reduced, and the size of the electronic circuit 420 can be reduced. Further, four couplers coupled to the coupler 64 may be specified by a communication test in advance.

Although the four couplers 64-1 to 64-4 are arranged symmetrically in the electronic circuit 420, the couplers 64-1 to 64-4 are symmetrically arranged in the electronic circuit 420 having a small number of couplers. It does not have to be arranged. For example, the couplers 64-1 to 64-4 can be arranged at intervals of 22.5 °. In this case, assuming that the mounting angle is 0 °, the couplers 64-1 to 64-4 are arranged at positions overlapping the couplers 63-1 to 63-4. When the mounting angle is changed to 22.5 °, the couplers 64-1 to 64-4 overlap the couplers 63-2 to 63-5. In the electronic circuit 420, the couplers 64 may not be arranged at equal intervals along the circumference. That is, the couplers 64-1 to 64-4 may have a random arrangement as long as they are arranged at an azimuth angle of 22.5 ° × n (n is any integer from 0 to less than 16). For example, the couplers 64-1 to 64-4 may be randomly arranged so as to overlap with the couplers 63-1, 63-2, 63-4, 63-13.

す る と The above configuration can be generalized as follows. In the electronic circuit 400, K (K is an integer of 2 or more) couplers 63 are provided on the substrate 401, and in the electronic circuit 420, L (L is an integer of 2 to K) couplers 64 is provided on the substrate 421. Is provided. For example, K couplers 63 are arranged at equal intervals along the circumference of the circle C1. In the electronic circuit 420, the L couplers 64 are arranged on a circle C3 having the same size as the circle C1. By stacking the substrate 401 and the substrate 421 such that the L couplers 63 and the L couplers 64 overlap, L parallel communication paths are formed.

FIGS. 2, 4, and 6 show configurations where K = L = 8. FIG. 7 shows a configuration where K = L = 16. FIG. 8 shows a configuration where K = 16 and L = 4. Further, by setting K to be a multiple of 4, the mounting angle can be changed every 90 °. L may be an integer of 2 or more and K or less. For example, in the configuration shown in FIG. 7, even if one or more of the couplers 64-1 to 64-16 are thinned out in the electronic circuit 410, the mounting angle of the substrate can be changed every 22.5 °. Of course, in the configurations shown in FIGS. 2, 4, and 6, the couplers 53, 64, and 74 may be omitted.

(4) If the couplers 63 on the substrate 401 are arranged N times rotationally symmetrically, the couplers 64 on the substrate 421 may not be arranged rotationally symmetrically. When K is larger than L, L couplers 64 are arranged at 360 ° × n / N (n is an integer greater than or equal to 0 and less than N) every 360 ° / N if arranged at an azimuth angle of 360 ° × n / N. The mounting angle can be changed. In the electronic circuit connection method according to the present embodiment, L (L is an integer of 2 or more and K or less) K couplers 63 and 63 are overlapped to form L communication paths. The first substrate and the second substrate are stacked by setting the mounting angle between the electronic circuit 400 and the electronic circuit 420 to 360 ° × n / N (n is any integer from 0 to less than N).

Modification 5
An electronic circuit according to Modification Example 5 will be described with reference to FIG. FIG. 9 is a plan view showing the arrangement of the coupler 64 in the electronic circuit 440. In the electronic circuit 440, similarly to the electronic circuit 420, four couplers 64 are provided on the circumference of the circle C1. In FIG. 9, the substrate 441 has a square shape, and a port 442 is provided on one side thereof.

In Modification 5, the extraction directions of the extraction transmission lines 25b and 26b are different. The lead transmission lines 25b and 26b are drawn from the coupler 64 toward the inside of the circle C3. Here, the lead transmission lines 25b and 26b are bent toward the port 442 after being drawn toward the center O2 of the circle C3. When the wire is drawn inside the circle C3, it is easier to perform equal-length wiring than to bypass the outside of the circle C3. The configuration of Modification 5 is particularly effective when the number of couplers 64 arranged on the circumference is small.

Embodiment 2 FIG.
In the present embodiment, K (K is an integer of 2 or more) couplers are arranged along the sides of a regular N-gon. Further, K couplers are arranged rotationally symmetrically with respect to the center of the regular N-gon. The arrangement of the coupler in the electronic circuit according to the second embodiment will be described with reference to FIG. FIG. 10 is a plan view showing the arrangement of the couplers 43 and 53 in the electronic circuits 500 and 510. The couplers 43 and 53 have an arc shape as shown in FIG.

The electronic circuit 500 includes the substrate 501, the port 502, the input / output wiring 503, and the 16 couplers 43. The 16 couplers 43 are arranged at regular intervals in an array of 4 columns and 4 rows. The couplers 43-1 to 43-16 are arranged at intervals so as not to interfere with each other.

結合 A coupler 43 is arranged along the sides of the two regular squares S1 and S2. The square S2 is larger than the square S1, and the center of the square S2 coincides with the center O1 of the square S1. Four couplers 43 are arranged on four sides of the regular square S1. Specifically, couplers 43-6, 43-7, 43-10, and 43-11 are arranged at the ends of four sides of the regular square S1, that is, at each vertex. The couplers 43-6, 43-7, 43-10, 43-11 are arranged four times rotationally symmetrically with respect to the center O1 of the square S1.

Furthermore, twelve couplers 43-1 to 43-5, 43-8, 43-9, 43-12 to 43-16 are arranged on four sides of the square S2. Four couplers 43 are arranged on one side of the square S2. Specifically, couplers 43-1, 43-4, 43-13, and 43-16 are arranged at the vertices of the square S2, respectively. On the side parallel to the X direction on the + Y side, two couplers 43-2 and 43-3 are arranged between the coupler 43-1 and the coupler 43-4. Similarly, on the side parallel to the X direction on the −Y side, two couplers 43-14 and 43-15 are arranged between the couplers 43-13 and 43-16. Further, on the side parallel to the Y direction on the −X side, two couplers 43-5 and 43-9 are arranged between the coupler 43-1 and the coupler 43-13. On the side parallel to the Y direction on the + X side, two couplers 43-8 and 43-12 are arranged between the coupler 43-4 and the coupler 43-16. Therefore, the couplers 43-1 to 43-5, 43-8, 43-9, 43-12 to 43-16 are arranged four times rotationally symmetrically with respect to the center O1 of the square S2.

中心 The center of the square S1 and the center of the square S2 coincide at the center O1. Therefore, the couplers 43-1 to 43-16 are arranged four times rotationally symmetrically. Although the substrate 501 is a square (square), the substrate 501 may have a shape other than the square. Here, the center of the square substrate 501 coincides with the center O1, but does not have to coincide. The port 502 is provided on a side parallel to the X direction on the −Y side of the substrate 501. In the port 502, input / output wirings 503 connected to the coupler 43 are bundled.

The electronic circuit 510 includes a substrate 511, a port 512, an input / output wiring 513, and 16 couplers 53. Therefore, four couplers 53-6, 53-7, 53-10, 53-11 are arranged on the sides of the square S3. Eight couplers 53-1 to 53-5, 53-8, 53-9, 53-12 to 53-16 are arranged on the sides of the square S4. The center of the square S3 and the center of the square S4 coincide at the center O2.

(4) The configuration of the electronic circuit 510 is the same as the configuration of the electronic circuit 500, and thus a detailed description is omitted. Therefore, the couplers 53-1 to 53-16 are arranged four times rotationally symmetrically with respect to the center O2. In FIG. 10, since the substrate 511 is rotated by 90 °, the port 512 is provided on the −X side of the substrate 511 on the side parallel to the Y direction.

と す る With this configuration, the mounting angle of the electronic circuits 500 and 510 can be changed every 90 °. When the substrate 501 and the substrate 511 are stacked so that the center O1 and the center O2 coincide with each other, if the angle of the substrate 511 with respect to the substrate 501 is 0 °, 90 °, 180 °, or 270 °, 16 couplers are used. 43 and 16 couplers 53 overlap. Thereby, 16 communication paths can be formed.

For example, when the substrate 510 is rotated by 90 °, the center O31 of the coupler 43-1 shown in FIG. 11 matches the center O32 of the coupler 53-13. As a result, the coupler 43-1 and the coupler 43-13 mostly overlap, so that the coupler 43-1 and the coupler 53-13 are electromagnetically coupled. The other coupler 43 is similarly coupled to the coupler 53. Even when the relative rotation angle of the substrate 511 with respect to the substrate 501 is 90 °, 16 parallel communication paths are formed.

FIG. 12 shows the arrangement of the coupler 53 when the rotation angles of the substrate 511 are set to 0 °, 90 °, 180 °, and 270 ° clockwise. In FIG. 12, for simplicity of description, only the four couplers 53-1, 53-4, 53-13, and 53-16 at the corners of the square S4 are denoted by reference numerals. Since the coupler 53 has an arc shape, it is arranged at the same position even when the angle is changed. Only the direction of the outgoing transmission line changes by 90 °.

Even when the substrate 511 is rotated by 0 °, 90 °, 180 °, and 270 °, the mounting angle can be changed every 90 ° because the 16 couplers 53 all overlap the coupler 43. . Data communication can be performed in parallel using 16 communication paths. This enables high-speed data communication.

組 み 合 わ せ The combination of the couplers 43 and 53 that form a pair changes depending on the mounting angle of the board 501 and the board 511. If the mounting angle is unknown, the data may be transmitted in order from the couplers 43-1 to 43-15, and the receiver on the electronic circuit 510 side may restore the data. By performing such a communication test in advance, the combination of the coupler 43 and the coupler 53 can be confirmed. Further, even when data is inverted depending on the rotation angle, that is, when 0 becomes 1 and 1 becomes 0, the presence or absence of the inversion can be confirmed by a communication test in advance.

Further, in the present embodiment, positioning portions 65 and 66 are provided near the center of each side of substrates 501 and 511, respectively, as shown in FIG. The positioning section 65 is a magnet or a fitting structure. Therefore, the substrates 501 and 511 are detachably fixed by the positioning portions 65 and 66. Provision of the positioning portion 65 can prevent displacement and prevent a decrease in coupling performance.

In FIG. 10, the outgoing transmission lines 44 and the outgoing transmission lines 45 of the 16 couplers 43 are all drawn out from the couplers 43 in the same direction, but may be drawn out in different directions.

It is preferable that a plurality of couplers are arranged at regular intervals along the sides of the square. By doing so, the size of the substrate can be reduced even when the couplers are arranged at intervals that do not interfere with each other. In the present embodiment, the coupler is arranged on the side of the double square. However, the coupler may be arranged on the side of the triple or more square. Or you may arrange | position a coupler on the side of only one square.

Modification 6
An electronic circuit 600 according to Modification 6 will be described with reference to FIG. FIG. 13 is a plan view showing the arrangement of the coupler 43 in the electronic circuit 600. Note that, in FIG. 13, a board, ports, and the like are omitted.

The electronic circuit 600 includes four coupler groups 431 to 434. Each of the coupler groups 431, 432, 433, and 434 includes 16 couplers 43. That is, the electronic circuit 600 has 64 couplers 43. The coupler 43 has an arc shape as shown in FIG.

The 16 couplers 16 included in the coupler group 431 have the same arrangement as the couplers 43-1 to 43-16 shown in FIG. Accordingly, the sixteen couplers 43 included in the coupler group 431 are rotationally symmetric four times with respect to the center O11. Similarly, the sixteen couplers 16 included in each of coupler groups 432 to 434 have the same arrangement as couplers 43-1 to 43-16 shown in FIG. The 16 couplers 43 included in the coupler group 432 are rotationally symmetric four times with respect to the center O12. The 16 couplers 43 included in the coupler group 433 are four times rotationally symmetric with respect to the center O13. The 16 couplers 43 included in the coupler group 434 are rotationally symmetric four times with respect to the center O14.

Furthermore, the coupler groups 431 to 434 are arranged four times rotationally symmetrically with respect to the center O21. For example, the center O21 is the center of a square S5 connecting the centers O11, O12, O13, and O14. That is, the centers O11, O12, O13, and O14 are arranged at the vertices of the square S5. With such an arrangement, the 64 couplers 43 are arranged four times rotationally symmetrically with respect to the center O21. Therefore, the mounting angle can be changed every 90 °. By stacking the electronic circuits in which the coupler 43 has the arrangement shown in FIG. 12, 64 parallel communication paths are formed. Therefore, higher-speed data communication can be performed in a communication circuit including stacked substrates.

変 形 Note that Modification 6 can also be applied to the configuration of Embodiment 1. In this case, the plurality of couplers described in the first embodiment or the first to fifth modifications thereof are defined as a coupler group. Then, the centers of the plurality of coupler groups are arranged at the vertices of the regular polygon. For example, by arranging coupler groups at the vertices of a square, the mounting angle can be changed every 90 °.

Modification 7
An electronic circuit 700 according to Modification 7 will be described with reference to FIG. FIG. 14 is a plan view showing the arrangement of the couplers 43 and 53 in the electronic circuits 700 and 710. In FIG. 14, a board, ports, and the like are omitted.

The electronic circuit 700 includes fifteen couplers 43-1 to 43-15. The couplers 43-1 to 43-15 are arranged at intervals so as not to interfere with each other. The electronic circuit 710 includes 15 couplers 53-1 to 53-15. The couplers 53-1 to 53-15 are arranged at intervals so as not to interfere with each other. The couplers 43-1 to 43-15 and the couplers 53-1 to 53-15 have arc shapes as shown in FIG.

The couplers 43-1 to 43-6 are arranged on the sides of the equilateral triangle T1. At the vertices of the equilateral triangle T1, couplers 43-1, 43-3, 43-5 are arranged, respectively. Further, on one side of the equilateral triangle T1, a coupler 43-2 is arranged between the coupler 43-1 and the coupler 43-3. Further, on one side of the equilateral triangle T1, a coupler 43-4 is disposed between the coupler 43-3 and the coupler 43-5. On one side of the equilateral triangle T1, the coupler 43-5 is disposed between the coupler 43-5 and the coupler 43-1. Therefore, the couplers 43-1 to 43-6 are arranged three times rotationally symmetrically with respect to the center O1 of the equilateral triangle T2.

The couplers 43-7 to 43-15 are arranged on the sides of the equilateral triangle T2. Couplers 43-7, 43-10, 43-13 are arranged at the vertices of the equilateral triangle T2, respectively. Further, on one side of the equilateral triangle T2, couplers 43-8 and 43-9 are arranged between the coupler 43-7 and the coupler 43-10. Further, on one side of the equilateral triangle T2, couplers 43-11 and 43-12 are arranged between the couplers 43-10 and 43-13. On one side of the equilateral triangle T2, couplers 43-14 and 43-15 are arranged between the coupler 43-13 and the coupler 43-7. Therefore, the couplers 43-7 to 43-15 are arranged three times rotationally symmetrically with respect to the center O1 of the equilateral triangle T2.

Furthermore, the center of the equilateral triangle T1 and the center of the equilateral triangle T2 coincide at the center O1. Therefore, the fifteen couplers 43-1 to 43-15 are arranged three times rotationally symmetrically.

(4) The configuration of the electronic circuit 710 is the same as the configuration of the electronic circuit 700, and thus a detailed description is omitted. Therefore, the couplers 53-1 to 53-15 are arranged three times rotationally symmetrically with respect to the center O2. In FIG. 14, the substrate 511 is rotated by 120 °. Therefore, combiner 43-1 and combiner 53-1 overlap.

と す る With such a configuration, the mounting angle of the electronic circuits 700 and 710 can be changed every 120 °. When the electronic circuit 700 and the electronic circuit 710 are stacked so that the center O1 and the center O2 coincide with each other, if the rotation angles are 0 °, 120 °, and 240 °, fifteen couplers 43 and fifteen couplings are provided. The device 53 overlaps. Thereby, 15 communication paths can be formed.

In the second embodiment and its modified examples 6 and 7, the couplers are arranged three times or four times rotationally symmetrically, but may be arranged five times or more rotationally symmetrically. For example, by arranging the couplers 43 and 53 along the sides of the regular pentagon, five times of rotational symmetry can be obtained. Alternatively, by arranging the couplers 43 and 53 on the sides of the regular hexagon, six rotational symmetries can be obtained.
When generalized to a regular polygon, it can be expressed as follows. K couplers (K is an integer greater than or equal to N) are arranged along the sides of a regular N polygon (N is an integer greater than or equal to 3), and K couplers are arranged at the center of the regular N polygon. What is necessary is just to arrange N times rotational symmetry. In this way, the mounting angle can be changed every (360 ° / N).

Furthermore, the regular N-gon may be double or more. That is, a plurality of couplers are arranged along the sides of a regular N-gon having the same center and different sizes. Then, a plurality of couplers may be arranged N times rotationally symmetrically. In this way, more communication paths can be formed.

Note that Embodiment 1, Embodiment 2, and Modifications 1 to 7 can be used in appropriate combination. Further, the coupler 43 may be arranged on the first square S1, and the other couplers may be arranged on the circumference of a circle larger than the first square. Alternatively, the coupler 43 may be arranged on the first circle C1, and the other couplers may be arranged on a side of a square that is larger than the first circle C1.

In the second embodiment and the sixth and seventh modifications, as in the fourth modification, the number of couplers on two substrates may be different. For example, in the electronic circuit 510 shown in FIG. 10, one or more of the couplers 53-1 to 53-16 may not be provided. Further, even in an electronic circuit having a configuration in which the positioning portions 65 and 66 are not illustrated, the positioning portions 65 and 66 can be formed by appropriately providing a magnet on a substrate.

Note that the present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the gist.

This application claims priority based on Japanese Patent Application No. 2018-153638 filed on Aug. 17, 2018, the entire disclosure of which is incorporated herein.

41 Coupler element 43 Coupler 44 Lead transmission line 45 Lead transmission line 47 Board surface 51 Coupler element 53 Coupler 54 Lead transmission line 55 Lead transmission line 57 Board surface 63 Coupler 64 Coupler 65 Positioning part 66 Positioning part 73 Connection Unit 74 Coupler 100, 110, 200, 210, 300, 310, 400, 410 Electronic circuit 101, 111, 201, 211, 401, 411 Substrate 102, 112, 202, 212, 402, 412 Port 103, 113, 203 213 I / O wiring

Claims (16)

A first substrate;
An electronic circuit board, comprising: a plurality of first couplers formed on the first substrate, for connecting a first electronic circuit and a second electronic circuit,
In a plan view of the first substrate, K (K is an integer of 4 or more) first couplers are arranged at intervals on a circumference of a first circle;
(M × K) (m is an integer of 1 or more) first couplers which are concentric circles of the first circle and are arranged on a circumference of a second circle larger than the first circle. Are placed in an empty space,
An electronic circuit board, wherein the first coupler is arranged point-symmetrically with respect to the center of the first circle. A first substrate;
An electronic circuit board, comprising: a plurality of first couplers formed on the first substrate, for connecting a first electronic circuit and a second electronic circuit,
In a plan view of the first substrate, K (K is an integer of 4 or more) first couplers are arranged at intervals on a circumference of a first circle;
The first coupler is arranged point-symmetrically with respect to the center of the first circle;
An electronic circuit board, wherein the first coupler is a signal line coupler having a signal line arranged along a radial direction or a circumferential direction of the first circle. In a plan view, the first substrate overlaps with a second substrate provided with a plurality of second couplers of the second electronic circuit,
From a state in which the first substrate is mounted on the second substrate so that the plurality of first couplers are coupled to the plurality of second couplers, around the center of the first circle The electronic circuit board according to claim 1, wherein the plurality of first couplers are coupled to the plurality of second couplers in a state where the first substrate is rotated by 90 °. The electronic device according to any one of claims 1 to 3, wherein a port provided for taking out an input / output wiring connected to the first coupler is provided at one end of the first substrate. Circuit board. (5) The electronic circuit board according to any one of (1) to (4), wherein an outgoing transmission line is drawn out from the first coupler toward an inside of the first circle. (6) The electronic circuit board according to any one of (1) to (5), wherein an outgoing transmission line is drawn out from the first coupler toward an outside of the first circle. (7) The electronic circuit board according to any one of (1) to (6), wherein the K first couplers are a coupler group, and the plurality of coupler groups are rotationally symmetrically arranged. (8) The electronic circuit board according to any one of (1) to (7), wherein the plurality of first couplers are arranged so as not to overlap with each other. A communication circuit comprising: a first electronic circuit board; and a second electronic circuit board disposed to face the first electronic circuit board,
The first electronic circuit board is the electronic circuit board according to claim 1,
The second electronic circuit board includes:
A second substrate;
A plurality of second couplers formed on the second substrate,
Of the plurality of second couplers,
L second couplers are arranged on the circumference of a third circle having the same size as the first circle;
(M × L) second couplers are arranged on the circumference of a fourth circle having the same size as the second circle;
In plan view, the L second couplers on the circumference of the third circle overlap with the L first couplers, so that L communication paths are formed,
When the (m × L) second couplers on the circumference of the fourth circle overlap the (m × L) first couplers in a plan view, (mx L) A communication circuit in which communication paths are formed. A communication circuit comprising: a first electronic circuit board; and a second electronic circuit board disposed to face the first electronic circuit board,
The first electronic circuit board is the electronic circuit board according to claim 2,
The second electronic circuit board includes:
A second substrate;
L (L is an integer of 2 or more and K or less) second couplers formed on the second substrate;
The L second couplers include:
Are arranged on the circumference of a third circle having the same size as the first circle,
When the first substrate and the second substrate are stacked such that the L second couplers and the L first couplers overlap in a plan view, L A communication circuit in which communication paths are formed. A first substrate;
An electronic circuit board, comprising: a plurality of first couplers formed on the first substrate, for connecting a first electronic circuit and a second electronic circuit,
K (K is an integer equal to or greater than N) first couplers are spaced along the sides of a regular N-gon (N is an integer equal to or greater than 3);
An electronic circuit board, wherein the K first couplers are N times rotationally symmetric with respect to the center of the regular N-sided polygon. The electronic circuit board according to claim 11, wherein the first coupler is formed in an arc shape. 13. The electronic circuit board according to claim 11, wherein a port provided for taking out an input / output wiring connected to the first coupler is arranged at one end of the first board. The electronic circuit board according to any one of claims 11 to 13, wherein the plurality of first couplers are arranged so as not to overlap with each other. A communication circuit comprising a first electronic circuit board and a second electronic circuit board,
The electronic circuit board according to any one of claims 11 to 14, wherein the first electronic circuit board is
The second electronic circuit board includes:
A second substrate;
L (L is an integer of 2 or more and K or less) second couplers formed on the second substrate;
The L second couplers include:
It is arranged on the side of a regular N-gon having the same size as the regular N-gon,
When the first substrate and the second substrate are stacked such that the L second couplers and the L first couplers overlap in a plan view, L A communication circuit in which communication paths are formed. A connection method for connecting a first electronic circuit board and a second electronic circuit board,
The first electronic circuit board includes:
A first substrate;
A plurality of first couplers provided on the first substrate,
The second electronic circuit board includes:
A second substrate;
A plurality of second couplers provided on the second substrate,
In the first electronic circuit board, K (K is an integer of 2 or more) first couplers are arranged N times (N is an integer of 2 or more) in rotational symmetry,
The first electronic circuit board is configured such that L (L is an integer of 2 or more and K or less) K and the second couplers overlap to form L communication paths. Stacking the first electronic circuit board and the second electronic circuit board, with the mounting angle between the first electronic circuit board and the second electronic circuit board being 360 ° × n / N (n is an integer of 0 or more and less than N); Connection method.

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