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WO2018038079A1 - Dispositif antenne - Google Patents

Dispositif antenne Download PDF

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Publication number
WO2018038079A1
WO2018038079A1 PCT/JP2017/029866 JP2017029866W WO2018038079A1 WO 2018038079 A1 WO2018038079 A1 WO 2018038079A1 JP 2017029866 W JP2017029866 W JP 2017029866W WO 2018038079 A1 WO2018038079 A1 WO 2018038079A1
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WO
WIPO (PCT)
Prior art keywords
electrode
antenna device
electrode portion
parasitic element
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/029866
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English (en)
Japanese (ja)
Inventor
泰夫 田保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2018535681A priority Critical patent/JP6642722B2/ja
Publication of WO2018038079A1 publication Critical patent/WO2018038079A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to a small antenna device housed in a small electronic device such as a mobile communication terminal.
  • Patent Document 1 describes an antenna device using a monopole antenna and a parasitic element.
  • the monopole antenna and the parasitic element are L-shaped linear conductors, both of which have a long portion extending in the width direction of the casing of the mobile communication terminal, and the vertical length of the casing. A portion extending in a direction (a direction orthogonal to the width direction and the thickness direction) is short.
  • the end of the part extending in the vertical direction in the monopole antenna is a feeding point.
  • the end portion of the parasitic element extending in the vertical direction is connected to the ground.
  • the end of the monopole antenna that extends in the width direction of the casing (the open end of the monopole antenna) and the end of the parasitic element that extends in the width direction of the casing (the open end of the parasitic element) Capacitively coupled.
  • Patent Document 1 a portion extending in the width direction of the housing in the monopole antenna and a portion extending in the width direction of the housing in the parasitic element having substantially the same length are arranged in the width direction of the housing. Must be spaced apart.
  • the length in the width direction for realizing the omnidirectional antenna is required to some extent, and the downsizing of the casing is hindered.
  • an object of the present invention is to provide a small omnidirectional antenna.
  • the antenna device of the present invention includes a substrate, a ground electrode, a feeding element, and a parasitic element.
  • the length of the substrate in the first direction is approximately 1 ⁇ 4 or less of the wavelength of the high-frequency signal to be transmitted and received.
  • the ground electrode is formed on the surface of the substrate.
  • the power feeding element is formed in a portion where the ground electrode is not formed on the surface of the substrate, and is connected to a power feeding point.
  • the parasitic element is disposed at a distance from the surface in a second direction orthogonal to the surface of the substrate, and is capacitively coupled to the feeder element.
  • the parasitic element includes a first electrode part, a second electrode part, and a third electrode part.
  • the first electrode portion has a shape extending in the first direction.
  • the second electrode portion is connected to the first end in the first direction of the first electrode portion and has a shape extending in the second direction.
  • the third electrode portion is connected to the second end in the first direction of the first electrode portion and has
  • a current parallel to the first direction flows through the parasitic element.
  • a current parallel to the third direction perpendicular to the first direction (lateral direction of the substrate) and the second direction (direction orthogonal to the surface of the substrate) flows through the substrate. Therefore, the directivity of the antenna in a plane including the first direction and the third direction approaches omnidirectionality.
  • the width of the first electrode portion is larger than the width of the second electrode portion and the width of the third electrode.
  • the slit formed of the connection portion between the first electrode portion and the second electrode portion and the electrode non-formation portion provided at the connection portion between the first electrode portion and the third electrode portion is provided. It is preferable to provide.
  • the slit has a shape that bends in the middle of the extending direction.
  • the second electrode portion and the third electrode portion may have a meander shape.
  • the electrical length of the second electrode portion and the third electrode portion can be increased without increasing the length of the second electrode portion and the third electrode portion in the third direction (vertical direction of the substrate). Therefore, the parasitic element becomes small.
  • the antenna device of the present invention may have the following configuration.
  • the 2nd electrode part and the 3rd electrode part have an electrode non-formation part in the middle position of the extending direction.
  • the electrodes separated by the electrode non-forming portion are connected by a mounting type inductor.
  • the parasitic element may have a bent portion that bends toward the substrate.
  • the length between the connection portion to the second electrode portion and the connection portion to the third electrode portion in the first electrode portion is approximately 1/10 to the wavelength of the high-frequency signal. It is preferable that it is 1/4.
  • an omnidirectional antenna can be realized in a small size.
  • FIG. 1 is an external perspective view of an antenna device according to a first embodiment of the present invention.
  • 1 is a plan view of an antenna device according to a first embodiment of the present invention.
  • (A), (B), (C), (D) is a figure explaining the change of directivity according to the shape of a parasitic element. It is a figure which shows a shape and directivity characteristic when the width
  • (A), (B), (C) is an external perspective view of a parasitic element of an antenna device according to a seventh embodiment of the present invention.
  • (A) is a top view of the parasitic element of the antenna apparatus which concerns on the 8th Embodiment of this invention
  • (B) is a top view of the parasitic element of the antenna apparatus of a comparison object.
  • (A)-(E) is a figure which shows the example of a shape of the electric power feeding element which concerns on embodiment of this invention.
  • FIG. 1 is an external perspective view of the antenna device according to the first embodiment of the present invention.
  • FIG. 2 is a plan view of the antenna device according to the first embodiment of the present invention.
  • the antenna device 10 includes a feeding element 20, a ground electrode 30, a parasitic element 40, and a substrate 300.
  • the antenna device 10 is disposed in a housing 90 such as a portable communication device.
  • the substrate 300 is made of an insulating base material, and the length in the y direction (first direction) is shorter than the length in the z direction (third direction).
  • the length of the substrate 300 in the y direction is approximately 1 ⁇ 4 or less of the wavelength of the high frequency signal to be transmitted and received by the antenna device 10.
  • the y direction (first direction) is the lateral direction of the substrate 300
  • the z direction (third direction) is the longitudinal direction of the substrate 300.
  • a thickness direction of the substrate 300, that is, a direction orthogonal to the surface of the substrate 300 is defined as an x direction (second direction).
  • the ground electrode 30 and the power feeding element 20 are formed on the surface of the substrate 300.
  • the ground electrode 30 and the power feeding element 20 are made of, for example, copper (Cu).
  • the ground electrode 30 is formed on substantially the entire surface except for a portion of a predetermined length on one end side in the z direction of the substrate 300.
  • the feeding element 20 is formed in a region where the ground electrode 30 is not formed on the substrate 300.
  • the power feeding element 20 is a linear electrode.
  • the power supply element 20 is formed by connecting a power supply end side electrode 21 extending in the z direction and an open end side electrode 22 extending in the y direction. Therefore, the power feeding element 20 is an L-shaped linear electrode that bends in the middle of the extending direction.
  • the length of the power feeding element 20 is approximately 1 ⁇ 4 of the wavelength of the high-frequency signal, and the length of the open end side electrode 22 is preferably closer to the length of the power feeding element 20.
  • the end of the power supply end electrode 21 opposite to the open end side electrode 22 is close to the ground electrode 30.
  • a proximity point between the feeding end side electrode 21 and the ground electrode 30 is a feeding point FP of the feeding element 20.
  • the feeding point FP is disposed near one end of the substrate 300 in the y direction.
  • the end of the open end side electrode 22 opposite to the power feed end side electrode 21, that is, the open end of the feed element 20 is disposed near the other end of the substrate 300 in the y direction.
  • the length in the y direction of the substrate 300 (the length in the lateral direction of the substrate 300) can be set to a minimum length necessary for transmitting and receiving a high-frequency signal.
  • the parasitic element 40 is arranged away from the surface of the substrate 300 in the x direction.
  • the parasitic element 40 is disposed at a position where the parasitic element 40 is capacitively coupled to the feeder element 20. Specifically, as shown in FIG. 2, the parasitic element 40 overlaps at least a part of the feeding element 20 in a plan view including a plane including the y direction and the z direction.
  • the parasitic element 40 overlaps a part of the ground electrode 30.
  • the parasitic element 40 is made of copper (Cu) or the like, similar to the feeder element 20.
  • the parasitic element 40 includes a first electrode part 41, a second electrode part 42, and a third electrode part 43.
  • the 1st electrode part 41, the 2nd electrode part 42, and the 3rd electrode part 43 are strip
  • the length of the second electrode portion 42 and the length of the third electrode portion 43 are substantially the same.
  • the first electrode portion 41 has a shape extending in the y direction.
  • the 2nd electrode part 42 and the 3rd electrode part 43 are the shapes extended in az direction.
  • the second electrode portion 42 is connected to one end (first end) in the y direction of the first electrode portion 41.
  • the third electrode portion 43 is connected to the other end (second end) in the y direction of the first electrode portion 41.
  • the second electrode portion 42 and the third electrode portion 43 are disposed on the same side with respect to the first electrode portion 41 in the z direction.
  • the length of the parasitic element 40 that is, the length of the shape connected in the order of the second electrode portion 42, the first electrode portion 41, and the third electrode portion 43 is approximately 1 ⁇ 2 of the wavelength of the high-frequency signal.
  • the antenna device 10 when a high frequency signal is fed to the feeding point FP, the current flowing in the z direction increases according to the shape of the substrate 300, that is, the ground electrode 30, and the current flowing in the y direction. Becomes smaller.
  • the parasitic element 40 since the parasitic element 40 has the above-described configuration, the currents flowing through the second electrode portion 42 and the third electrode portion 43 are canceled in opposite directions. The flowing current, that is, the current flowing in the y direction increases.
  • the directivity of the high-frequency signal radiated by the antenna device 10 is almost non-directional with almost no NULL in all directions in the plane including the y direction and the z direction. Therefore, omnidirectionality can be realized without increasing the shape of the antenna device 10, particularly the shape in the y direction (the width direction of the substrate).
  • FIGS. 3A to 3D are diagrams for explaining the change in directivity according to the shape of the parasitic element.
  • 3A to 3D show changes in directivity when the length of the first electrode portion of the parasitic element is changed.
  • 3 (A) to 3 (D) the shape is shown in the left column toward the paper surface, and the directivity characteristic is shown in the right column toward the paper surface.
  • the lengths of the second electrode portion and the third electrode portion also change in accordance with the change in the length of the first electrode portion, and the length of the parasitic element is approximately 1 ⁇ 2 of the wavelength of the high-frequency signal. Is maintained.
  • the 0 ° direction and the 180 ° direction are the vertical direction (z direction) of the substrate, and the 90 ° direction and the 270 ° direction are the horizontal direction ( y direction).
  • the directivity of the figure 8 that is, the electric field strength in the vertical direction of the substrate 300 is significantly low, and NULL is generated in the 0 ° direction and the 180 ° direction.
  • NULL is generated regardless of the intensity of radiation.
  • the distance between the connection end to the second electrode portion and the connection end to the third electrode portion in the first electrode portion is set between ⁇ / 4 and ⁇ / 10 to be more accurate. And omnidirectionality can be realized reliably.
  • the width of the substrate 300 (the length in the y direction), that is, the width of the ground electrode 30 (the length in the y direction) is preferably approximately ⁇ / 4 or less.
  • FIG. 4 is a diagram showing the shape and directivity characteristics when the width (length in the y direction) of the ground electrode is ⁇ / 2.
  • the width of the ground electrode 30 is preferably approximately ⁇ / 4 or less.
  • the width of the ground electrode 30 (the length in the y direction) may be set as appropriate according to the shape required for the product, and the width of the ground electrode 30 (the length in the y direction) is also taken into account, for example, the radiated power ) May be appropriately set to approximately ⁇ / 4 or less.
  • FIG. 5 is a plan view of a parasitic element of the antenna device according to the second embodiment of the present invention.
  • the solid line indicates the shape of the parasitic element 40 ⁇ / b> A according to the present embodiment
  • the dotted line indicates the shape of the parasitic element 40 according to the first embodiment.
  • the antenna device according to the present embodiment differs from the antenna device 10 according to the first embodiment in the shape of the parasitic element 40A.
  • Other configurations of the antenna device according to the present embodiment are the same as those of the antenna device 10 according to the first embodiment, and the description of the same parts is omitted.
  • the parasitic element 40A includes a first electrode portion 41A, a second electrode portion 42A, and a third electrode portion 43A.
  • the connection mode of the first electrode part 41A, the second electrode part 42A, and the third electrode part 43A is the same as that of the parasitic element 40 according to the first embodiment.
  • the width W41A of the first electrode portion 41A is larger than the width W41 of the first electrode portion 41 according to the first embodiment.
  • the width of the first electrode portions 41 and 41A is the length in the z direction (vertical direction of the substrate).
  • the parasitic element 40A has a larger capacitive coupling to the feeding element than the parasitic element 40 according to the first embodiment. Therefore, when the lengths of the second electrode portion 42A and the third electrode portion 43A are the same as those of the second electrode portion 42 and the third electrode portion 43 according to the first embodiment, the frequency as the antenna device 10 is low. Become. In other words, when the frequency of the antenna device 10 is not changed, as shown in FIG. 5, the lengths of the second electrode portion 42A and the third electrode portion 43A are the second electrode portion 42 and the second electrode portion 42 according to the first embodiment. It can be made smaller than the third electrode portion 43. That is, the size of the parasitic element 40A in the z direction (vertical direction of the substrate) can be reduced.
  • FIG. 6 is a plan view of a parasitic element of the antenna device according to the third embodiment of the present invention.
  • the antenna device according to the present embodiment differs from the antenna device according to the second embodiment in the shape of the parasitic element 40B.
  • Other configurations of the antenna device according to the present embodiment are the same as those of the antenna device according to the second embodiment, and description of the same parts is omitted.
  • the parasitic element 40B includes a first electrode part 41B, a second electrode part 42B, and a third electrode part 43B.
  • the connection mode of the first electrode part 41B, the second electrode part 42B, and the third electrode part 43B is the same as that of the parasitic element 40A according to the second embodiment.
  • a slit 442B is provided at a connection portion between the first electrode portion 41B and the second electrode portion 42B.
  • the slit 442B is realized by providing an electrode non-forming portion extending in the z direction with respect to the first electrode portion 41B.
  • the slit 442B is provided inside the bent shape that connects the first electrode portion 41B to the second electrode portion 42B.
  • a slit 443B is provided at a connection portion between the first electrode portion 41B and the third electrode portion 43B.
  • the slit 443B is realized by providing an electrode non-forming portion extending in the z direction with respect to the first electrode portion 41B.
  • the slit 443B is provided inside the bent shape that connects the first electrode part 41B to the third electrode part 43B.
  • the electrical length of the parasitic element 40B can be increased. Thereby, the length of the parasitic element 40B can be shortened, and the parasitic element 40B can be reduced in size.
  • FIG. 7 is a plan view of a parasitic element of the antenna device according to the fourth embodiment of the present invention.
  • the antenna device according to the present embodiment differs from the antenna device according to the second embodiment in the shape of the parasitic element 40C.
  • Other configurations of the antenna device according to the present embodiment are the same as those of the antenna device according to the second embodiment, and description of the same parts is omitted.
  • the parasitic element 40C includes a first electrode portion 41C, a second electrode portion 42C, and a third electrode portion 43C.
  • the connection mode of the first electrode part 41C, the second electrode part 42C, and the third electrode part 43C is the same as that of the parasitic element 40A according to the second embodiment.
  • a slit 442C is provided at a connection portion between the first electrode portion 41C and the second electrode portion 42C.
  • the slit 442C includes electrode non-forming parts 4421C and 4422C provided for the first electrode part 41C.
  • the electrode non-forming portion 4421C has a shape that opens at the end in the width direction of the first electrode portion 41C and extends in the z direction.
  • the electrode non-forming portion 4422C is continuous with the electrode non-forming portion 4421C and has a shape extending in the y direction.
  • the slit 442C is provided inside the bent shape that connects the first electrode portion 41C to the second electrode portion 42C.
  • a slit 443C is provided at a connection portion between the first electrode portion 41C and the third electrode portion 43C.
  • the slit 443C includes electrode non-formation parts 4431C and 4432C provided for the first electrode part 41C.
  • the electrode non-forming portion 4431C has a shape that opens at the end in the width direction of the first electrode portion 41C and extends in the z direction.
  • the electrode non-forming portion 4432C has a shape that is continuous with the electrode non-forming portion 4431C and extends in the y direction.
  • the slit 443C is provided inside the bent shape that connects the first electrode portion 41C to the third electrode portion 43C.
  • the electrical length of the parasitic element 40B can be increased.
  • the electrical length can be made longer than that of the parasitic element 40A according to the third embodiment.
  • the length of the parasitic element 40C can be further shortened, and the parasitic element 40C can be further reduced in size.
  • FIG. 8 is a plan view of a parasitic element of the antenna device according to the fifth embodiment of the present invention.
  • the antenna device according to the present embodiment differs from the antenna device according to the second embodiment in the shape of the parasitic element 40D.
  • Other configurations of the antenna device according to the present embodiment are the same as those of the antenna device according to the second embodiment, and description of the same parts is omitted.
  • the parasitic element 40D includes a first electrode part 41D, a second electrode part 42D, and a third electrode part 43D.
  • the connection mode of the first electrode portion 41D, the second electrode portion 42D, and the third electrode portion 43D is the same as that of the parasitic element 40A according to the second embodiment.
  • the shape of the first electrode portion 41D is the same as that of the first electrode portion 41A according to the second embodiment.
  • the second electrode part 42D and the third electrode part 43D have a meander shape. At this time, it is preferable that the second electrode portion 42D and the third electrode portion 43D have a line-symmetric shape with respect to a reference line that passes through the center in the y direction of the first electrode portion 41D and extends in the z direction.
  • the parasitic element 40D can have a predetermined electrical length while shortening the lengths of the second electrode portion 42D and the third electrode portion 43D in the z direction. Thereby, parasitic element 40D can be reduced in size.
  • FIG. 9 is a plan view of a parasitic element of the antenna device according to the sixth embodiment of the present invention.
  • the antenna device according to the present embodiment differs from the antenna device according to the second embodiment in the shape of the parasitic element 40E.
  • Other configurations of the antenna device according to the present embodiment are the same as those of the antenna device according to the second embodiment, and description of the same parts is omitted.
  • the parasitic element 40E includes a first electrode part 41E, a second electrode part 42E, and a third electrode part 43E.
  • the connection mode of the first electrode part 41E, the second electrode part 42E, and the third electrode part 43E is the same as that of the parasitic element 40A according to the second embodiment.
  • the shape of the first electrode part 41E is the same as that of the first electrode part 41E according to the second embodiment.
  • the second electrode portion 42E has an electrode non-forming portion 420 at a midpoint in the extending direction (z direction).
  • the two electrode portions separated by the electrode non-forming portion 420 in the second electrode portion 42E are connected by a mounting inductor 452.
  • the inductance of the mounted inductor 452 is larger than the inductance due to the electrode having the same size as that of the electrode non-forming part 420.
  • the third electrode portion 43E has an electrode non-forming portion 430 at an intermediate position in the extending direction (z direction).
  • the two electrode portions separated by the electrode non-forming portion 430 in the third electrode portion 43E are connected by a mounting inductor 453.
  • the inductance of the mounted inductor 453 is larger than the inductance due to the electrode having the same size as that of the electrode non-forming part 430.
  • the lengths of the second electrode portion 42E and the third electrode portion 43E in the z direction can be reduced, and the parasitic element 40E can be reduced in size.
  • FIGS. 10A, 10B, and 10C are external perspective views of parasitic elements of the antenna device according to the seventh embodiment of the present invention.
  • the antenna device according to the present embodiment differs from the antenna device according to the second embodiment in the shapes of the parasitic elements 40F1, 40F2, and 40F3.
  • Other configurations of the antenna device according to the present embodiment are the same as those of the antenna device according to the second embodiment, and description of the same parts is omitted.
  • the parasitic elements 40F1, 40F2, and 40F3 include a first electrode portion 41F, a second electrode portion 42F, and a third electrode portion 43F.
  • the connection mode of the first electrode part 41F, the second electrode part 42F, and the third electrode part 43F is the same as that of the parasitic element 40A according to the second embodiment.
  • the bent portion FX causes a portion of the first electrode portion 41F having a predetermined length along the z direction to be perpendicular to the surface of the substrate and close to the substrate.
  • the third electrode portion 43F has a shape orthogonal to the surface of the substrate and is close to the substrate by the bent portion FX.
  • the bent portion FX causes the portion of the first electrode portion 41F having a predetermined length along the z direction, the second electrode portion 42F, and the third electrode portion 43F to be on the surface of the substrate.
  • the shape is orthogonal to the substrate and is close to the substrate.
  • the parasitic element becomes closer to the substrate, and the capacitive coupling between the parasitic element and the feeder element is increased. Therefore, similarly to the antenna device according to the second embodiment, the parasitic element can be reduced in size.
  • FIG. 11A is a plan view of a parasitic element of the antenna device according to the eighth embodiment of the present invention.
  • FIG. 11B is a plan view of the parasitic element of the antenna device to be compared.
  • the antenna device 10G according to the present embodiment differs from the antenna device 10 according to the first embodiment in the shape of the parasitic element 40G.
  • the parasitic element 40G includes a first electrode part 41G, a second electrode part 42G, and a third electrode part 43G.
  • the connection mode of the first electrode part 41G, the second electrode part 42G, and the third electrode part 43G is the same as that of the parasitic element 40 according to the first embodiment.
  • the parasitic element 40G includes an R chamfered portion ER41 at the corner of the first electrode portion 41G.
  • the R chamfered portion ER41 includes a bent outer corner portion that connects the first electrode portion 41G and the second electrode portion 42G, and a bent outer corner portion that connects the first electrode portion 41G and the third electrode portion 43G. It is formed in each part.
  • the parasitic element 40G is arranged along the R chamfered shape of the corner portion. Can be placed close together. Further, along with this shape, the second electrode part 42G and the third electrode part 43G can be shortened similarly to the antenna device according to the second embodiment.
  • the first of the casing 90G and the parasitic element 40 ′ In the parasitic element 40 ′ having a comparative shape similar in basic shape to the parasitic element 40 of the first embodiment, the first of the casing 90G and the parasitic element 40 ′. It must be separated from the one electrode portion 41 ′. Further, due to this structure, the second electrode portion 42 ′ and the third electrode portion 43 ′ cannot be shortened.
  • a small antenna device 10G corresponding to the shape of the housing can be realized.
  • each above-mentioned embodiment can be combined suitably, and a parasitic element can be reduced in size by combining these.
  • FIG. 12A, FIG. 12B, FIG. 12C, FIG. 12D, and FIG. 12E are diagrams showing examples of the shape of the power feeding element according to the embodiment of the present invention.
  • 12A to 12E are partial plan views including a feeding element forming portion in the antenna device.
  • the feeding element 20A includes a feeding end side electrode 21 and an open end side electrode 22A.
  • the open end side electrode 22A includes linear electrodes 221, 222, and 223.
  • the linear electrodes 221 and 223 have a shape extending in the y direction, and the linear electrode 222 has a shape extending in the z direction.
  • the length of the linear electrodes 221 and 223 is significantly longer than that of the linear electrode 222.
  • One end of the linear electrode 221 is connected to the power supply end side electrode 21, and the other end is connected to one end of the linear electrode 222.
  • the other end of the linear electrode 222 is connected to one end of the linear electrode 223. That is, the open end side electrode 22A is a folded electrode.
  • the feeding element 20B includes a feeding end side electrode 21 and an open end side electrode 22B.
  • the open end side electrode 22B has a so-called meander shape in which portions extending in the y direction and portions extending in the z direction are alternately connected.
  • the feed element 20C includes a feed end side electrode 21, an open end side electrode 22C, and a short-circuit end side electrode 23C.
  • the feeding element 20C has a so-called inverted F shape.
  • the feed element 20D includes a feed end side electrode 21, an open end side electrode 22D, and a chip inductor 210.
  • the open end side electrode 22 ⁇ / b> D has a shape extending in the y direction, similar to the open end side electrode 22 described above.
  • the power supply end electrode 21 is provided with a separating portion at an intermediate position in the extending direction.
  • the chip inductor 210 is disposed so as to connect portions separated by the separation portion in the power supply end side electrode 21.
  • the feed element 20E includes the feed end side electrode 21 and the chip inductor 210. That is, the feed element 20E has a shape in which the open end side electrode 22D is omitted from the feed element 20D.
  • 10, 10A, 10B, 10C, 10D, 10E, 10G Antenna devices 20, 20A, 20B, 20C, 20D, 20E: Feeding element 21: Feeding end side electrode 22, 22A, 22B, 22C, 22D: Open end side electrode 23C: Short-circuit end side electrode 30: Ground electrodes 40, 40A, 40B, 40C, 40D, 40E, 40F1, 40F2, 40F3, 40G: Parasitic elements 41, 41A, 41B, 41C, 41D, 41E, 41F, 41G: No.

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Abstract

Un dispositif d'antenne (10) est pourvu d'un substrat (300), d'une électrode de masse (30), d'un élément d'alimentation électrique (20) et d'un élément parasite (40). La longueur du substrat (300) dans une première direction n'est pas supérieure à environ 1/4 de la longueur d'onde d'un signal haute fréquence à émettre ou à recevoir. L'électrode de masse (30) est formée sur une surface du substrat (300). L'élément d'alimentation électrique (20) est formé sur une section de la surface du substrat (300) dans laquelle l'électrode de masse (30) n'est pas formée, et est connectée à un point d'alimentation électrique. L'élément parasite (40) est disposé à distance de la surface du substrat (300) et est couplé de manière capacitive à l'élément d'alimentation électrique (20). L'élément parasite (40) est pourvu d'une première section d'électrode (41), d'une deuxième section d'électrode (42) et d'une troisième section d'électrode (43). La première section d'électrode (41) a une forme s'étendant dans la première direction. La seconde section d'électrode (42) est connectée à une première extrémité, dans la première direction, de la première section d'électrode (41), et a une forme s'étendant dans une seconde direction. La troisième section d'électrode (43) est connectée à une seconde extrémité, dans la première direction, de la première section d'électrode (41), et a une forme s'étendant dans la seconde direction.
PCT/JP2017/029866 2016-08-25 2017-08-22 Dispositif antenne Ceased WO2018038079A1 (fr)

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WO2020158133A1 (fr) * 2019-02-01 2020-08-06 Ｎｅｃプラットフォームズ株式会社 Dispositif de communications sans fil et procédé de configuration d'antenne
CN114450852A (zh) * 2019-09-26 2022-05-06 Nec平台株式会社 无线通信装置和无线通信方法

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JP2003110329A (ja) * 2001-07-25 2003-04-11 Matsushita Electric Ind Co Ltd 内蔵アンテナ装置
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