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WO2023090006A1 - Dispositif d'antenne et dispositif radar - Google Patents

Dispositif d'antenne et dispositif radar Download PDF

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Publication number
WO2023090006A1
WO2023090006A1 PCT/JP2022/038256 JP2022038256W WO2023090006A1 WO 2023090006 A1 WO2023090006 A1 WO 2023090006A1 JP 2022038256 W JP2022038256 W JP 2022038256W WO 2023090006 A1 WO2023090006 A1 WO 2023090006A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
antenna device
plate
dielectric layer
radiating elements
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/JP2022/038256
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English (en)
Japanese (ja)
Inventor
浩 西田
尚 石原
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 JP2023561458A priority Critical patent/JP7619478B2/ja
Publication of WO2023090006A1 publication Critical patent/WO2023090006A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

Definitions

  • the present invention relates to an antenna device and a radar device.
  • a dielectric-loaded array antenna is known in which a dielectric block is arranged on each of a plurality of patch antennas (Patent Document 1).
  • Patent Document 1 A dielectric-loaded array antenna is known in which a dielectric block is arranged on each of a plurality of patch antennas.
  • dielectric-loaded array antenna When manufacturing a dielectric-loaded array antenna, it is necessary to place the dielectric block in each of the multiple unit antennas with high positional accuracy. Further, when the dielectric blocks are individually adhered to the antenna substrate with an adhesive or the like, there is a concern that the dielectric blocks may fall off from the antenna substrate due to vibration or impact.
  • a substrate a ground plane provided on the substrate; a plurality of radiating elements provided on the substrate and forming a patch antenna together with the ground plane; a dielectric layer affixed to the substrate over the plurality of radiating elements; a dielectric member disposed on the dielectric layer;
  • the dielectric member is a plate-like portion spaced apart from the dielectric layer; a plurality of projecting portions projecting from the plate-like portion toward each of the plurality of radiating elements; a fixing portion arranged in a region that does not overlap with the plurality of radiating elements in plan view and protruding from the plate-like portion toward the substrate;
  • An antenna device is provided in which relative positions of the plurality of projecting portions to the plurality of radiating elements are fixed via the fixing portion.
  • the above antenna device a signal generator that supplies a transmission signal to some of the plurality of radiation elements for transmission;
  • a radar apparatus is provided that includes a reception signal received by the remaining radiation elements for reception among the plurality of radiation elements and a signal processing unit that performs signal processing with the transmission signal.
  • the protruding part functions as a dielectric block applied to the radiating element. Since the plurality of protrusions protrude from the plate-like portion, it is possible to improve the positional accuracy between the protrusions and the radiating elements, compared to the case where a dielectric block is individually arranged for each radiating element.
  • FIG. 1A is a perspective view of the antenna device according to the first embodiment
  • FIGS. 1B and 1C are perspective views of a substrate and a dielectric member used in the antenna device according to the first embodiment, respectively.
  • FIG. 2A is a cross-sectional view of the antenna device according to the first embodiment
  • FIG. 2B is a cross-sectional view of the antenna device according to another configuration example.
  • 3A and 3B are cross-sectional views of a neighboring area where one radiating element and a protruding portion of an antenna device according to a comparative example and a first embodiment are arranged, respectively, and FIGS. 3A) and simulation results of the reflection coefficient S11 of one radiating element of the antenna device according to the first embodiment (FIG. 3B).
  • FIG. 3A simulation results of the reflection coefficient S11 of one radiating element of the antenna device according to the first embodiment
  • FIG. 4A is a cross-sectional view of the antenna device to be simulated
  • FIG. 4B is a graph showing the simulation results of the gain when the dimension H of the protrusion in the height direction is changed
  • FIG. 11 is a graph showing simulation results of gain when thickness t of a portion is changed
  • FIG. 5A, 5B, and 5C are perspective views of a dielectric member, a substrate, and a case, respectively, which are used in the radar device according to the second embodiment.
  • FIG. 6 is a cross-sectional view of the radar device according to the second embodiment.
  • FIG. 7 is a block diagram of the radar system according to the second embodiment.
  • FIG. 1A is a perspective view of the antenna device according to the first embodiment
  • FIGS. 1B and 1C are perspective views of a substrate 10 and a dielectric member 30, respectively, used in the antenna device according to the first embodiment.
  • FIG. 1C shows a state in which the dielectric member 30 shown in FIG. 1A is turned upside down.
  • a plurality of radiating elements 12 are arranged on the surface of the substrate 10 , and a dielectric layer 17 is fixed on the surface of the substrate 10 and the plurality of radiating elements 12 .
  • “adhered” means firmly and firmly adhered to stay in a fixed place.
  • a ground plane 11 is arranged in the inner layer of the substrate 10 .
  • Each of the multiple radiating elements 12 constitutes a patch antenna together with the ground plane 11 .
  • a plurality of radiating elements 12 are arranged in a matrix and operate as an array antenna.
  • the dielectric layer 17 is made of the same dielectric material as that of the substrate 10, for example.
  • dielectric layer 17 may be formed of a material different from the dielectric material of substrate 10, such as a resist material.
  • the dielectric member 30 (FIG. 1C) includes a plate-like portion 31 having a plate-like shape, a plurality of projecting portions 32, and a fixing portion 33.
  • a resin material such as liquid crystal polymer (LCP) is used for the dielectric member 30 .
  • the plate-like portion 31 is spaced apart from the surface of the substrate 10 to which the dielectric layer 17 is fixed.
  • the plurality of protrusions 32 protrude from the plate-like portion 31 toward the plurality of radiating elements 12 .
  • Each projection 32 has a square or rectangular shape in plan view. In plan view, each of the plurality of protrusions 32 is approximately the same size as or larger than the radiating element 12 and includes the radiating element 12 .
  • Radiating element 12 , ground plane 11 , and projection 32 form a dielectric loaded patch antenna, and electromagnetic fields generated by excitation of radiating element 12 couple to projection 32 .
  • the fixing part 33 is arranged in a region that does not overlap with the region where the plurality of protrusions 32 are arranged in plan view, and protrudes from the plate-like part 31 toward the substrate 10 .
  • the plate-like portion 31 has a square or rectangular shape in plan view, and the fixing portions 33 are arranged along two edges of the square or rectangular shape facing each other.
  • the plurality of projecting portions 32 are arranged inside the convex hull of the fixing portion 33 in plan view.
  • the convex hull means the smallest convex polygon that includes the fixed portion 33 in plan view.
  • the position of the dielectric member 30 with respect to the substrate 10 is fixed via the fixing portion 33 .
  • the tip surface of the fixed portion 33 is adhered to the surface of the dielectric layer 17 with an adhesive.
  • the relative positions of the projections 32 with respect to the radiation element 12 are fixed via the fixing portion 33 .
  • FIG. 2A is a cross-sectional view of the antenna device according to the first embodiment.
  • a plurality of radiating elements 12 are arranged on the surface of the substrate 10, and a ground plane 11 is arranged on the inner layer. Further, another ground plane 14 is arranged on the opposite surface (back surface) of the substrate 10 .
  • a plurality of feed lines 13 are arranged between the ground planes 11 and 14 .
  • a plurality of feeder lines 13 are connected to a plurality of radiating elements 12 via vias 15 penetrating the ground plane 11 respectively.
  • a dielectric layer 17 is adhered to the top surface of the plurality of radiating elements 12 and the top surface of the substrate 10 .
  • the fixed portion 33 of the dielectric member 30 is adhered to the dielectric layer 17 via the adhesive layer 40 .
  • a plurality of protruding portions 32 protrude from the plate-like portion 31 toward the plurality of radiating elements 12 respectively. Each tip of the protrusions 32 contacts the dielectric layer 17 . Due to deformation such as warping of the plate-like portion 31 of the dielectric member 30 or warping of the substrate 10, a minute gap not filled with the dielectric is generated between the tip of the projecting portion 32 and the dielectric layer 17. In some cases.
  • FIG. 2B is a cross-sectional view of an antenna device according to another configuration example of the first embodiment.
  • the fixed portion 33 of the dielectric member 30 is adhered to the substrate 10 by the adhesive layer 40 .
  • the fixed portion 33 is fixed to the substrate 10 by a fastener such as a screw 41 or the like.
  • the dielectric member 30 is integrally molded, for example, by injection molding.
  • the plate-like portion 31, the protruding portion 32, and the fixing portion 33 are made of the same resin.
  • the projecting portion 32 may be formed of a resin different from that of the plate-like portion 31 and the fixing portion 33 . In this case, two-color molding (molding of different materials) should be applied to the fabrication of the dielectric member 30 .
  • FIGS. 3A and 3B are cross-sectional views of neighboring areas where one radiating element 12 and protrusion 32 are arranged in the antenna devices according to the comparative example and the first embodiment, respectively.
  • a dielectric layer 17 is adhered to the surface of substrate 10 overlying radiating element 12 .
  • the distance between the dielectric layer 17 and the tip of the projection 32 is denoted by G.
  • the dielectric layer 17 is not arranged and the radiating element 12 is exposed.
  • the distance between the substrate 10 and the projecting portion 32 is denoted by G.
  • FIGS. 3C and 3D are graphs showing simulation results of the reflection coefficient S11 of one radiating element 12 of the antenna apparatus according to the comparative example (FIG. 3A) and the first embodiment (FIG. 3B), respectively.
  • the horizontal axis represents the frequency in the unit [GHz]
  • the vertical axis represents the reflection coefficient S11 in the unit [dB].
  • parameters other than the interval G are set identically between the comparative example and the first embodiment.
  • Various parameters are adjusted so that the resonance frequency of the radiating element 12 is approximately 79 GHz.
  • a thin solid line, a broken line, and a thick solid line in the graphs of FIGS. 3C and 3D indicate the reflection coefficient S11 when the distance G is 0 mm, 0.05 mm, and 0.1 mm, respectively.
  • the reflection coefficient S11 increases as the gap G increases. That is, the antenna characteristics deteriorate.
  • the degree of deterioration of the antenna characteristics (the degree of increase in the reflection coefficient S11) is smaller in the first example than in the comparative example.
  • the reason why the degree of deterioration of the antenna characteristics of the antenna device according to the first embodiment is smaller than that of the comparative example is as follows.
  • the gap G is made as narrow as possible, and most preferably to make the gap G zero.
  • the distance G is 0, that is, the tip of the protruding portion 32 is in contact with the dielectric layer 17 is most preferable.
  • the gap G is preferably 0.1 mm or less.
  • the gain of the antenna was obtained by simulation while changing the thickness of the plate-like portion 31 and the dimension of the protrusion 32 in the height direction.
  • FIG. 4A is a cross-sectional view of an antenna device to be simulated.
  • a projecting portion 32 projects from the plate-like portion 31 toward the radiating element 12 and is in contact with the dielectric layer 17 .
  • the relative permittivity ⁇ r of the plate-like portion 31 and the projecting portion 32 is 3, and the dimensions of the radiating element 12 are adjusted so that the resonance frequency of the radiating element 12 is 79 GHz.
  • the thickness of the plate-like portion 31 is denoted as t
  • the height dimension of the projection portion 32 is denoted as H.
  • the wavelength within the plate-like portion 31 and the projecting portion 32 corresponding to the center frequency of the operating frequency band of the antenna device is denoted by ⁇ d .
  • the resonance frequency of the radiating element 12 can be used as the center frequency of the operating frequency band of the antenna device.
  • FIG. 4B is a graph showing simulation results of the gain when the dimension H of the projection 32 in the height direction is changed.
  • the horizontal axis represents H/ ⁇ d
  • the vertical axis represents gain in unit [dBi].
  • the frequency for exciting the radiating element 12 was set to 79 GHz
  • the thickness t of the plate-like portion 31 was set to 0.5 ⁇ ⁇ d .
  • the gain increases as the dimension H in the height direction of the protrusion 32 increases. In order to achieve a gain of 10dBi or more, it is preferable to set the dimension H in the height direction to 0.4 ⁇ ⁇ d or more.
  • the protruding portion 32 becomes long needle-like and the mechanical strength is lowered. Even if the dimension H in the height direction is made larger than 0.6 ⁇ ⁇ d , the gain hardly changes. If the dimension H in the height direction is too large, the demerit of lowering the mechanical strength becomes greater than the merit of improving the gain. Therefore, in order to ensure sufficient mechanical strength, it is preferable to set the dimension H in the height direction to 2 ⁇ ⁇ d or less.
  • FIG. 4C is a graph showing simulation results of gain when the thickness t of the plate-like portion 31 is changed.
  • the horizontal axis represents t/ ⁇ d
  • the vertical axis represents gain in unit [dBi].
  • the frequency for exciting the radiating element 12 was set to 79 GHz
  • the dimension H in the height direction of the projecting portion 32 was set to 0.46 ⁇ ⁇ d .
  • the thickness t of the plate-like portion 31 when the thickness t of the plate-like portion 31 is increased, peaks and troughs of the gain appear alternately and repeatedly.
  • the gain is high when the thickness t is around an integral multiple of ⁇ d /2.
  • the thickness t of the plate-like portion 31 in order to secure a gain equal to or greater than a value that is 1 dB lower than the maximum value of the gain, the thickness t of the plate-like portion 31 must be (n ⁇ 0.1) ⁇ ( ⁇ d /2) or more, and ( It is preferable to make it within the range of n+0.3) ⁇ ( ⁇ d /2) or less.
  • n is an integer of 1 or more.
  • dielectric member 30 (FIG. 1C) is made by integral molding or two-color molding. Therefore, it is possible to easily increase the accuracy of the relative positions of the plurality of projecting portions 32 and the fixing portion 33 .
  • the fixing portion 33 With respect to the plurality of radiation elements 12 (FIG. 1B) with high accuracy and fixing the dielectric member 30 to the substrate 10, the positional accuracy of the plurality of radiation elements 12 and the plurality of protrusions 32 can be improved. can be easily increased. As a result, an excellent effect of suppressing variation in antenna characteristics of the dielectric-loaded patch antenna element including each of the plurality of radiating elements 12 is obtained.
  • the bonding area between the fixing portion 33 and the dielectric layer 17 (FIG. 2A) can be increased without being restricted by the dimensions of each of the plurality of projecting portions 32 .
  • the dielectric member 30 can be firmly fixed to the substrate 10 .
  • the dielectric block loaded on the radiating element 12 becomes smaller, so that the effect of using the dielectric member 30 according to the first embodiment is remarkably exhibited.
  • a gap not filled with dielectric may occur between the projecting portion 32 and the radiating element 12 as shown in FIG. 3B. Since the dielectric layer 17 is fixed on the radiating element 12 in the first embodiment, even if a gap occurs between the projecting portion 32 and the radiating element 12 as described with reference to FIG. 3D, A decrease in antenna characteristics can be suppressed.
  • the projecting portion 32 is larger than the radiation element 12 (FIG. 2A) in plan view and includes the radiation element 12 . Therefore, an excellent effect is obtained that the electromagnetic field generated by exciting the radiating element 12 is stably coupled to the projecting portion 32 . It is preferable that the projecting portion 32 have a dimension that causes resonance in the operating frequency band of the antenna device. Thereby, a high antenna gain can be realized.
  • the dielectric member 30 is produced by integral molding or two-color molding, but may be produced by other methods.
  • each of the plurality of projecting portions 32 may be welded to the plate-like portion 31 .
  • each of the plurality of projecting portions 32 may be adhered to the plate-like portion 31 using an adhesive. In this case, it is preferable to weld or bond the plurality of dielectric blocks to the plate-like portion 31 in a positioning mold.
  • each projection 32 (FIG. 1C) has a square or rectangular shape in plan view, but may have another shape.
  • the shape may be circular, elliptical, or polygonal with rounded corners.
  • the tip of the protruding portion 32 contacts the dielectric layer 17, or a gap is generated between them.
  • a small amount of adhesive may be placed between the protrusion 32 and the dielectric layer 17 . If the adhesive protrudes outward from the side surface of the projecting portion 32, the substantial shape of the dielectric block loaded on the radiating element 12 changes, and the antenna characteristics fluctuate. In order to suppress variations in antenna characteristics, it is preferable that the amount of the adhesive is such that it does not protrude outward from the side surfaces of the projecting portion 32 . Since the radiating element 12 is covered with the dielectric layer 17 (FIG. 2A), the effect of the adhesive on the antenna characteristics is reduced compared to a configuration in which the adhesive directly contacts the radiating element 12 .
  • two fixed portions 33 long in one direction are arranged so as to sandwich the region in which the plurality of projecting portions 32 are provided in a plan view. 33 may be placed.
  • the shape of the fixing portion 33 in a plan view may be a U shape that surrounds the region in which the plurality of projecting portions 32 are arranged from three sides, or a shape that seamlessly surrounds the region from four sides.
  • the plurality of projecting portions 32 are included in the convex hull of the fixing portion 33 in plan view.
  • FIG. 5A to 7 a radar device according to a second embodiment will be described with reference to FIGS. 5A to 7.
  • the radar system according to the second embodiment is equipped with the antenna system according to the first embodiment or its modification.
  • FIG. 5A, 5B, and 5C are perspective views of the dielectric member 30, substrate 10, and case 60, respectively, used in the radar device according to the second embodiment.
  • a plurality of radiating elements 12 are arranged on a substrate 10 (FIG. 5B).
  • Four radiating elements 12 constitute one series-fed array antenna 20
  • six series-fed array antennas 20 are arranged on the substrate 10 .
  • the array directions of the plurality of radiating elements 12 in the series-fed array antennas 20 are parallel to each other.
  • Two of the six series-fed array antennas 20 are transmission array antennas 20Tx, and the remaining four series-fed array antennas 20 are reception array antennas 20Rx.
  • the dielectric member 30 (FIG. 5A) includes a plate-like portion 31, a plurality of projecting portions 32, and a fixing portion 33, like the dielectric member 30 (FIG. 1C) used in the antenna device according to the first embodiment.
  • a plurality of protrusions 32 are arranged corresponding to each of the plurality of radiating elements 12 arranged on the substrate 10 .
  • the fixing portion 33 is arranged seamlessly along the edge of the plate-like portion 31 . Therefore, the fixing portion 33 surrounds the region where the plurality of projecting portions 32 are arranged from all sides.
  • the case 60 (FIG. 5C) includes a plate-like bottom portion 62 and side wall portions 63 rising from the edges of the bottom portion 62 .
  • the top surface of the side wall portion 63 includes a support surface 61 lying on a common imaginary plane.
  • a case 60 is made of metal, for example.
  • FIG. 6 is a cross-sectional view of the radar device according to the second embodiment.
  • a high-frequency circuit element 50 is mounted on the back surface of the substrate 10 (the surface opposite to the surface of the dielectric member 30 facing the plate-like portion 31).
  • the high frequency circuit element 50 is connected to the radiating element 12 via a feed line 13 (FIG. 2A) located within the substrate 10 .
  • the substrate 10 is fixed to the case 60 by supporting the peripheral portion of the back surface of the substrate 10 on the supporting surface 61 of the case 60 .
  • the support surface 61 extends outward from the edge of the substrate 10 in plan view.
  • a high-frequency circuit element 50 is accommodated between the bottom portion 62 of the case 60 and the substrate 10 .
  • the dielectric member 30 is fixed to the case 60 by bonding the fixing portion 33 of the dielectric member 30 to the support surface 61 .
  • the dielectric member 30 is directly fixed to the substrate 10, but in the second embodiment, the position of the dielectric member 30 with respect to the substrate 10 is fixed via the case 60.
  • FIG. In plan view, the plate-like portion 31 has a size that includes the plurality of radiating elements 12 and the high-frequency circuit element 50 .
  • FIG. 7 is a block diagram of the radar device according to the second embodiment.
  • the radar apparatus according to the second embodiment includes two transmitting array antennas 20Tx, four receiving array antennas 20Rx, a signal processing section 51, a signal generating section 52, a plurality of mixers 53, and a plurality of A/D converters 54. .
  • the signal processor 51, the signal generator 52, the plurality of mixers 53, and the plurality of A/D converters 54 are incorporated in the high frequency circuit element 50 (FIG. 6).
  • a combination of two transmitting array antennas 20Tx and four receiving array antennas 20Rx defines eight transmitting/receiving systems.
  • the signal generator 52 modulates mutually orthogonal carrier waves based on the modulated signal received from the signal processor 51, and supplies the two modulated transmission signals to the two transmission array antennas 20Tx, respectively.
  • a mixer 53 and an A/D converter 54 are prepared for each of the eight transmission/reception systems.
  • a mixer 53 mixes the transmission signal and the reception signal to generate an intermediate frequency signal.
  • An A/D converter 54 A/D converts the intermediate frequency signal.
  • the A/D converted intermediate frequency signal is input to the signal processing section 51 .
  • the signal processing unit 51 performs signal processing on a plurality of intermediate frequency signals to calculate the azimuth where the object is positioned and the distance to the object.
  • the excellent effects of the second embodiment will be described.
  • the second embodiment as in the first embodiment, it is possible to easily improve the positional accuracy of the plurality of radiation elements 12 (FIG. 5B) and the plurality of projecting portions 32 (FIG. 5A). An excellent effect is obtained in that the protruding portion 32 is unlikely to fall off due to this.
  • the plate-like portion 31 and the fixing portion 33 of the dielectric member 30 are a radome that protects the entire substrate 10 on which the radiation element 12 and the high-frequency circuit element 50 are mounted. function as Since the protruding portion 32 made of a dielectric loaded on the radiating element 12 is integrated with the plate-like portion 31 and the fixed portion 33 functioning as a radome, the dielectric block and the radome loaded on the radiating element 12 are separated. The number of parts can be reduced compared to the configuration provided in .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

La présente invention concerne un dispositif d'antenne dans lequel une antenne à plaque est configurée en fournissant un plan de masse et une pluralité d'éléments rayonnants sur une carte. Une couche diélectrique est fixée aux surfaces supérieures des éléments rayonnants et à la carte de façon à recouvrir la pluralité d'éléments rayonnants. Un élément diélectrique est disposé sur la couche diélectrique. L'élément diélectrique comprend : une partie en forme de plaque espacée de la couche diélectrique ; une pluralité de protubérances faisant saillie de la partie en forme de plaque vers des éléments rayonnants respectifs de la pluralité d'éléments rayonnants ; et des pièces de fixation qui sont disposées dans des zones ne chevauchant pas la pluralité d'éléments rayonnants dans une vue en plan et qui font saillie de la partie en forme de plaque vers la carte. Les positions relatives de la pluralité de protubérances par rapport aux éléments rayonnants sont fixées au moyen des parties de fixation.
PCT/JP2022/038256 2021-11-17 2022-10-13 Dispositif d'antenne et dispositif radar Ceased WO2023090006A1 (fr)

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Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH02107003A (ja) * 1988-10-15 1990-04-19 Matsushita Electric Works Ltd アンテナ装置
JP2003309422A (ja) * 2002-04-16 2003-10-31 Matsushita Electric Ind Co Ltd 誘電体装荷アンテナおよびそれを用いた無線装置
JP2004112783A (ja) * 2002-08-30 2004-04-08 Matsushita Electric Ind Co Ltd 誘電体装荷アンテナ装置、アレーアンテナ装置及び無線通信装置
JP2005130464A (ja) * 2003-09-11 2005-05-19 Matsushita Electric Ind Co Ltd 誘電体アンテナおよびそれを用いた無線装置
WO2020066453A1 (fr) * 2018-09-27 2020-04-02 株式会社村田製作所 Dispositif d'antenne et dispositif de communication

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Publication number Priority date Publication date Assignee Title
KR102522441B1 (ko) * 2015-11-09 2023-04-18 삼성전자주식회사 근거리 통신 안테나 장치 및 이를 구비한 전자 장치
US11616302B2 (en) * 2018-01-15 2023-03-28 Rogers Corporation Dielectric resonator antenna having first and second dielectric portions
WO2020179635A1 (fr) * 2019-03-04 2020-09-10 株式会社村田製作所 Dispositif de communication
JP7544155B2 (ja) * 2021-01-25 2024-09-03 株式会社村田製作所 アンテナ装置、レーダモジュール、及び通信モジュール

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02107003A (ja) * 1988-10-15 1990-04-19 Matsushita Electric Works Ltd アンテナ装置
JP2003309422A (ja) * 2002-04-16 2003-10-31 Matsushita Electric Ind Co Ltd 誘電体装荷アンテナおよびそれを用いた無線装置
JP2004112783A (ja) * 2002-08-30 2004-04-08 Matsushita Electric Ind Co Ltd 誘電体装荷アンテナ装置、アレーアンテナ装置及び無線通信装置
JP2005130464A (ja) * 2003-09-11 2005-05-19 Matsushita Electric Ind Co Ltd 誘電体アンテナおよびそれを用いた無線装置
WO2020066453A1 (fr) * 2018-09-27 2020-04-02 株式会社村田製作所 Dispositif d'antenne et dispositif de communication

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