KR20020070032A - A phase shifter - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to phase shifters used in various wireless communication systems, and more particularly, to phase shifters capable of selecting a phase shift range for selectively setting a phase shift range.

The present invention relates to a metal housing having a rectangular parallelepiped and an input / output connector for inputting / outputting a signal; and a semicircular arc wire conductor connected at both ends to the input / output connector; and an annular first dielectric plate in close contact with the wire conductor. An annular second dielectric plate in close contact with the conductor; and a rotating body receiving a rotational force from the outside and transmitting the rotational force to the first dielectric plate or the second dielectric plate; And a cover covering the upper portion of the housing. In addition, the present invention further provides a phase shift value display means, a dielectric holding means, and a dielectric initialization position detecting means.

Therefore, the phase shifter capable of selecting the phase shift range according to the present invention has the effect of having an extended phase shift range compared to the phase shifter having the same size and the effect of visually grasping the phase shift angle with the naked eye. In addition, it has an effect of providing a stable abnormal phase and making it possible to easily detect the initialization position of the dielectric.

Description

A phase shifter with selectable phase shift range

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase shifter used in various wireless communication systems, and more particularly, to selectively set a phase transition range using a plurality of dielectrics having different dielectric constants and a rotating shaft for selecting and rotating the same. A phase shifter capable of selecting a range of phase shifts.

The ideal phase is a device for controlling the phase of a signal, which is divided into various types according to the control method. Among them, there is a method of delaying phase by controlling propagation velocity, which can be phase shifted by using a magnetic material such as ferrite or by changing the dielectric constant of the dielectric constituting the transmission line. An example of an abnormal phase using such a dielectric is disclosed in Korean Patent Laid-Open Publication No. 2000-75389 (Dec. 15, 2000), and FIG. 1 is an exploded view showing the configuration of an embodiment of Korean Patent Publication No. 2000-75389.

A pair of the first dielectric material 102 and the third dielectric material 103 having a first dielectric constant, and a second dielectric 104 and a second dielectric material provided above and below one side of the strip line 101 formed on the printed circuit board. Another pair of four dielectrics 105 are rotated together to a predetermined position by the rotational movement of one rotating rod 106. At this time, successive phase transitions occur due to different dielectric constants of the two dielectric pairs 102, 103, 104, and 105. The transition range of the total phases is the overall length and two types of the stripline 101, which is a conductor. It is fixed and determined according to the difference in dielectric constant between dielectrics.

However, this type of abnormality is not efficient when the phase shift width of the signal fed between the radiating elements is large, such as when beams of the array antenna are formed. When an ideal group connected to the uppermost radiating element having the largest phase transition width and the ideal group connected to the lowermost radiating element having the smallest phase transition width are composed of an ideal group having the same transition range, the ideal phase connected to the lower radiating element It will be difficult to finely adjust the rotating rod of. This can be solved by fabricating the idealizers with different transition ranges, but the inefficiency caused by manufacturing different types of ideal devices to produce a single antenna and the inconvenience of having to separately install the ideal devices connected to each radiation element are still uncomfortable. It will remain.

The present invention has been made to overcome the above problems, the ideal phase according to the prior art a pair of the first dielectric material 102 and the third dielectric material 103 having the same dielectric constant up and down, and the second dielectric The phase shift range is fixed when another pair of 104 and fourth dielectric 105 are rotated together by one rotating rod 106, so that the dielectric pair 102 provided above the stripline 101 104 and another pair of dielectrics 103 and 105 provided at the bottom form a rotatable structure that can be rotated, respectively, thereby fixing the entire lower part of the stripline 101 to the third dielectric 103 and A first phase shift range caused by rotating the first dielectric 102 and the second dielectric 104, and the fourth dielectric 105 is fixed to the entire lower portion and the first dielectric 102 and the second dielectric ( Second phase generated by rotating 104 Having a two phase-shift range of the range, the phase shifter that provides a counter selectable as a technical problem.

Another technical problem of the present invention is to provide a phase shift value display means so that the phase shift value transitioned by the rotation of the rotation axis can be easily grasped.

In addition, another technical problem of the present invention is to further provide a dielectric fixing means for preventing the phase value from being changed by the dielectrics being rotated by an external environment such as vibration, not the rotation axis.

In addition, another technical problem of the present invention is to further provide a dielectric initialization position detecting means capable of detecting the initialization position of the dielectric.

1 is an exploded view showing the configuration of an embodiment of Korean Laid-Open Patent Publication No. 2000-75389.

Figure 2 is an exploded perspective view showing the configuration of an embodiment of an ideal phase capable of selecting a phase shift range according to the present invention.

FIG. 3A is a cross-sectional view illustrating a fastening state between the rotating disc and the second dielectric plate of FIG. 2.

3B is a cross-sectional view illustrating a fastening state between the rotating disc and the first dielectric plate of FIG. 2.

4A is a view showing the transition angle display means of the embodiment of FIG.

4B is a bottom view of the FIG. 2 embodiment.

Fig. 5A is a cross sectional view showing the dielectric holding means of the Fig. 2 embodiment;

5B is a perspective view of the shackle.

※ Explanation of codes for main parts of drawing

101. Strip lines 102, 205a. First dielectric

103, 206a. Third dielectric 104,205b. Second dielectric

105, 206b. Fourth dielectric 106. Rotary rod

201.Input connector 202. Wire conductor

203. Output connector 204. First rotating metal plate

205. First Dielectric Plate 206. Second Dielectric Plate

207. Second rotating metal plate 208. Rotating disc

209. Rotating shaft 210. Housing

211.First hole 212.Cover

213. Second Hole 214. Graduation

401. Line Conductor Figure 501. First Groove

502. First click 503. First click groove

In order to solve the above technical problem, the ideal phase selector capable of selecting a phase shift range according to the present invention is a rectangular metal housing having an empty interior and an open top; and an input connector provided at one side of the housing to receive a signal. And an output connector provided at the other side of the housing and outputting a phase delayed signal; and a semi-circular arc-shaped conductor having one end connected to the input connector and the other end electrically connected to the output connector. And an annular first dielectric plate provided in close contact with the wire conductor and having a plurality of dielectrics, the inner circumferential surface of which is formed with a screw thread, and comprising a plurality of dielectrics being provided in close contact with the wire conductors. A second dielectric plate having an annular shape formed therein; Or the rotor to pass the rotation force to said second dielectric plate; And a cover covering the upper portion of the housing.

Phase shift value display means for solving the technical problem of the present invention is a transition range discrimination means configured to visually distinguish the phase shift range according to the rotation of the second dielectric plate and the rotation of the first dielectric plate And a transition angle display means for displaying a phase shift angle generated by the transition range discrimination means, wherein the transition range discrimination means comprises: a first hole having a predetermined diameter formed at a center of a bottom surface of the housing; and a bottom of the second rotating metal plate. And a first region distinguishing display means formed on a surface to distinguish and display the regions of the third dielectric material and the fourth dielectric material, wherein the transition angle display means comprises regions of two dielectric materials attached to a bottom surface of the first rotating metal plate. A second region division display means for discriminatingly displaying and a second hole formed in a central axis of the cover; and a phase shift around the second hole. It made of engraved graduations.

In addition, the dielectric fixing means for solving the technical problem of the present invention is composed of at least one groove formed in a predetermined position of the housing; and at least one clasp inserted into the groove having an elastic force.

In addition, the dielectric initialization position detecting means for solving another technical problem of the present invention comprises at least one click groove formed in the position of the dielectric plate opposite to the position where the clasp is formed when the dielectric plate is initialized do.

Hereinafter, a preferred embodiment of an ideal phase capable of selecting a phase shift range according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding members will be denoted by the same reference numerals and detailed description thereof will be omitted.

Figure 2 is an exploded perspective view showing the configuration of one embodiment of an ideal phase that can be selected in the phase shift range according to the present invention, Figure 3a is a cross-sectional view showing a fastening state of the rotary disk of the second embodiment and the second dielectric plate. 3B is a cross-sectional view illustrating a coupling state between the rotating disc and the first dielectric plate of FIG. 2.

The signal input from the input connector 201 passes through the wire conductor 202 and is output to the output connector 203. At this time, the signal output to the output connector 203 is phase shifted and time delayed by a predetermined value by the configuration of the dielectrics 205a, 205b, 206a, and 206b provided in close contact with the wire conductor 202 above and below.

The annular first dielectric plate 205 has a first dielectric 205a and a second dielectric 205b having the same dielectric constant but different sizes, and these 205a and 205b are annular first rotating metal plates. 204 is fixed in the same manner as for adhesion. In addition, a thread for fastening the rotating disc 208 is formed on an inner circumferential surface of the first dielectric plate 205 including the first dielectric 205a and the second dielectric 205b.

The annular second dielectric plate 206 also has a third dielectric material 206a and a fourth dielectric material 206b having the same dielectric constant but having the same size, wherein the third dielectric material and the fourth dielectric material are second rotating metal plates. 207 is fixed in the same manner as the adhesive. In addition, as in the case of the first dielectric plate 205, a screw thread is formed on the inner circumferential surface of the first dielectric plate 205 for fastening with the rotating disc 208.

It is preferable that the outer and inner radii of the annular first and second dielectric plates 205 and 206 are the same, respectively, and the inner radius should be the same as the outer radius of the rotating disc 208. .

The structure of the dielectrics 205a, 205b, 206a, and 206b is formed by the rotational force of the cylindrical rotating shaft 209 to which the rotating force is applied from the outside, and extends from the lower end of the rotating shaft to form the rotating disc 208. have. Grooves may be formed at an upper end of the rotating shaft 209 for connection with a rotational force providing means (not shown), such as a motor, and may be formed on an outer circumferential surface of the rotating disc 208 provided at the lower end of the rotating shaft 209. A thread is formed to fasten the first dielectric plate 205 and the second dielectric plate 206.

The rotating shaft 209 may selectively rotate the first dielectric plate 205 and the second dielectric plate 206 to change the structure of the dielectric, and to rotate the second dielectric plate 206. In this case, as shown in FIG. 3A, the rotary disc 208 formed at the lower end of the second rotary metal plate 207 is pushed to form a screw thread formed on the outer circumferential surface of the rotary disc and the second dielectric plate 206. The screw threads formed on the inner circumferential surface may be tightened and then rotated. In addition, as shown in FIG. 3B, when the first dielectric plate 205 is to be rotated, the rotating disc is pulled up to the first rotating metal plate 204 and formed on the outer circumferential surface of the rotating disc 208. The screw thread and the screw thread formed on the inner circumferential surface of the first dielectric plate 205 may be fastened, and then rotated by a predetermined angle. The movement of the rotation disc 208 is achieved by pushing or pulling the rotation shaft 209.

The wire conductor 202 having a semicircular arc shape is provided between the first dielectric plate 205 and the second dielectric plate 206, one end of which is electrically connected to the input connector 201 and the other end of which is electrically connected to the output connector 203. Connected. The radius of the wire conductor 202 is preferably smaller than the outer radius of the first and second dielectric plates 205 and 206 and larger than the inner radius. In addition, the length is determined in consideration of the entire phase shift range as described above.

The principle of the phase shift and the principle of two phase shift ranges of the present embodiment having the above-described configuration are as follows. As described above, the first dielectric plate 205 and the second dielectric plate 206 are disposed above and below the wire conductor 202, and the first rotating metal plate 204 and the second rotating metal plate 207 are disposed outwardly. As this is enclosed, the line conductor can be seen as a form of strip line. The propagation velocity of the strip line depends on the effective dielectric constant of the dielectrics surrounding the inner conductor, and an inverse relationship exists between the two. Accordingly, the phase shift value may be proportional to the effective dielectric constant according to the arrangement of the dielectrics 205a, 205b, 206a, and 206b surrounding the line conductor 202.

In more detail, assuming that the entire lower portion of the line conductor 202 is composed of only the third dielectric 206a and the dielectric constant of the second dielectric 205b is larger than that of the first dielectric 205a, the line conductor (202) The phase shift and time delay values are minimum when the upper portion is covered with only the first dielectric 205a, and maximum when the upper portion is covered with only the second dielectric 205b, and a part of the conductor 202 is If the first dielectric 205a is covered with the rest, the second dielectric 205b has a value therebetween.

In addition, the range of the phase shift depends on the dielectric that is placed under the line conductor 202. The fourth dielectric 206b has a higher dielectric constant than the third dielectric 206a and the line conductor 202 Assuming that the fourth dielectric 206b is placed below, the minimum value when the first dielectric 205a covers the top of the wire conductor as described above, the maximum value when the second dielectric 205b is laid, and If only a part thereof is covered with the second dielectric 205b, the same value is obtained. However, since the effective dielectric constant is increased as a whole, the phase shift range is higher than that of the third dielectric 206a. Will be moved. If the opposite is the case, of course it will be moved to a lower range.

As described above, the phase shifter capable of selecting the phase shift range according to the present invention has two transition ranges, and thus a transition range discrimination means for distinguishing the two is required. The transition range distinguishing means is a leader position indicating a position where the wire conductor 211 is arranged around the first hole 211 and the first hole 211 having a predetermined diameter on the bottom surface of the housing 210. And display means and first region discriminating display means for distinguishing and displaying regions of the third dielectric 206a and the fourth dielectric 203b.

4B is a bottom view of the FIG. 2 embodiment. As shown, in the present embodiment, the wire conductor position display means is engraved with the wire conductor figure 401 on the underside of the housing, and the first area classification display means is defined by the second rotating metal plate 207. On the bottom surface, the region of the fourth dielectric was thickened so as to be distinguished from the region of the third dielectric. Thus, the user can see from FIG. 4B that the fourth dielectric lies underneath the wire conductor.

4A is a view showing the transition angle display means of the embodiment of FIG. As shown, a portion corresponding to the region of the second dielectric 205b is thickly painted on the original surface of the first rotating metal plate 204, and a diameter larger than the diameter of the rotating shaft 209 is formed on the central axis of the cover 212. The second hole 213 is formed. In addition, a graduation 214 representing a transition angle is engraved around the hole 213.

In order to easily recognize the phase shift value transitioned by the rotation of the first dielectric plate 205, the boundary between the two dielectrics 205a and 205b is color-coded on the upper surface of the first rotating metal plate 204 by color. The scale 214 is engraved around the hole 213 so that the angle corresponding to the scale 214 indicated by the boundary line becomes the phase shift angle, and the diameter of the hole is visible so that the boundary line can be seen through the hole 213. Is larger than the diameter of the rotating shaft 209.

The scale 214 engraved around the hole 213 should be capable of indicating two phase shift ranges as described above. 4a shows this scale in more detail. As shown, it can be seen that the scale of the scale engraved on the right side is different from the scale of the scale engraved on the left side about the vertical axis indicating "0". The left one is used when the transition range of the two phase transition ranges is small and the right one is used when the transition range is large. As described above, the determination of the transition range is made through the transition range discrimination means.

5A is a cross-sectional view illustrating the dielectric holding means and the dielectric initialization position detecting means of the FIG. 2 embodiment. For convenience of description, only the dielectric fixing means and the initialization position detecting means formed in the first dielectric plate portion are shown in advance.

As shown, a first groove 501 having a predetermined shape is formed at one side of the housing 210, and a first click 502 having an elastic force is inserted therein.

5B is a perspective view of the first shackle. The elastic force of the first clasp 502 causes the first dielectric plate 205 to contact the inner circumferential surface of the housing 210 so that the first dielectric plate 502 is not affected by the rotational axis 209 but by an external environment such as vibration. This prevents the 205 from rotating.

In addition, as shown in order to detect the initial position of the first dielectric plate, the first dielectric plate is provided with a first click groove 503 having a predetermined depth, and the position thereof is the first dielectric plate 205. When it is initialized, it is set as the position of the first dielectric plate opposite to the position where the first click 502 is formed.

As described above, the phase shifter capable of selecting the phase shift range according to the present invention has an effect of having an extended phase shift range compared to the phase shifter having the same size.

In addition, the phase shift value display means according to the present invention has the effect that the phase shift angle can be easily grasped by the naked eye, and the dielectric fixing means according to the present invention has the effect of providing a mechanically stable ideal phase.

In addition, the dielectric initialization position detecting means has an effect that it is possible to easily detect the initialization position of the dielectric.

Claims (9)

A rectangular metal housing having an empty interior and an open top; An input connector provided at one side of the housing to receive a signal; An output connector provided at the other side of the housing to output a phase shifted signal; A semi-circular wire conductor mounted in the housing, one end of which is electrically connected to the input connector and the other end of which is electrically connected to the output connector; An annular first dielectric plate provided in close contact with the wire conductor and composed of a plurality of dielectric members, the inner peripheral surface of which has a thread; An annular second dielectric plate provided in close contact with the wire conductor and composed of a plurality of dielectric members, the inner peripheral surface of which has a thread; A rotating body that receives rotational force from the outside and transfers the rotational force to the first dielectric plate or the second dielectric plate; And An ideal phase selector capable of selecting a range of phase shifts including a lid covering the top of the housing. A rectangular metal housing having an empty interior and an open top; An input connector provided at one side of the housing to receive a signal; An output connector provided at the other side of the housing to output a phase shifted signal; A semi-circular wire conductor mounted in the housing, one end of which is electrically connected to the input connector and the other end of which is electrically connected to the output connector; An annular first rotating metal plate provided on the wire conductor; An annular first dielectric attached to the bottom of the first rotating metal plate, the first dielectric having a different dielectric constant and a second dielectric having a different dielectric constant, having a thread formed on the inner circumferential surface, and being in close contact with the upper conductor plate; A circular second rotating metal plate provided on an inner bottom of the housing; It is attached to the upper surface of the second rotating metal plate is composed of a third dielectric and a fourth dielectric of the same size having a different dielectric constant, the annular second dielectric is formed on the inner peripheral surface and is in close contact with the wire conductor plate; A cylindrical shaft having a rotational force applied from the outside; A rotating disc which extends from a lower end of the rotating shaft and has a thread formed on its outer circumferential surface so as to be selectively fastened to a thread of the first dielectric plate or a thread of the second dielectric plate; And The phase shifter which covers the upper portion of the housing and can be selected from the phase shift range including a cover having a hole having a predetermined diameter formed in the central axis thereof. The method of claim 1, And a phase shift value display means for indicating a phase shift value that changes with rotation of the first dielectric plate. The method of claim 2, And a phase shift value display means for indicating a phase shift value that changes with rotation of the first dielectric plate. The method of claim 4, wherein the phase shift value display means, First region discrimination display means formed on a bottom surface of the second rotating metal plate to discriminate and display regions of the third and fourth dielectrics; A first hole having a predetermined diameter formed at the center of the bottom surface of the housing to visually see the first area discrimination display means; Second region classification display means formed on an upper surface of the first rotatable metal plate and configured to distinguish and display regions of the first dielectric material and the second dielectric material; A second hole formed in the center of the cover to visually see the first region display means; And The phase shifter can be selected from the phase shift range, characterized in that consisting of; graduations engraved phase shift angle around the second hole. The method according to any one of claims 1 to 5, An ideal phase selector capable of selecting a phase shift range further comprising a dielectric fixing means for tightly fixing and fixing the first dielectric plate and the second dielectric plate to an inner circumferential surface of the housing. The method of claim 6, wherein the dielectric holding means, At least one groove formed at a predetermined position of the housing; and At least one click having a predetermined shape having an elastic force inserted into the groove, wherein the phase shift range can be selected. The method of claim 6, An ideal phase selector capable of selecting a phase shift range further comprising a dielectric plate initialization position detecting means for sensing an initialization position of the first dielectric plate or the second dielectric plate. The method of claim 8, wherein the dielectric holding means, A first groove formed on one side of the housing on a horizontal axis of the first dielectric plate; A second groove formed on one side of the housing on a horizontal axis of the second dielectric plate; A first clasp of a predetermined shape inserted into the first groove and having an elastic force; And It is inserted into the second groove and consists of a predetermined second clasp having an elastic force, The dielectric plate initialization position detection means, A first clasp groove formed at a position of the first dielectric plate opposite to a position where the first clasp is formed when the first dielectric plate is initialized; and And a second click groove formed at a position of the second dielectric plate opposite to a position where the second click is formed when the second dielectric plate is initialized.