WO2007055028A1 - 直線偏波アンテナ及びそれを用いるレーダ装置 - Google Patents
直線偏波アンテナ及びそれを用いるレーダ装置 Download PDFInfo
- Publication number
- WO2007055028A1 WO2007055028A1 PCT/JP2005/020858 JP2005020858W WO2007055028A1 WO 2007055028 A1 WO2007055028 A1 WO 2007055028A1 JP 2005020858 W JP2005020858 W JP 2005020858W WO 2007055028 A1 WO2007055028 A1 WO 2007055028A1
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- Prior art keywords
- linearly polarized
- antenna element
- dielectric substrate
- antenna
- polarized antenna
- Prior art date
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Classifications
-
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- 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
- H01Q13/10—Resonant slot antennas
- H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
-
- 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
- H01Q19/10—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 reflecting surfaces
- H01Q19/108—Combination of a dipole with a plane reflecting surface
-
- 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
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
-
- 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
- H01Q9/06—Details
- H01Q9/14—Length of element or elements adjustable
Definitions
- the present invention relates to a linearly polarized antenna and a radar apparatus using the same, which employ a technology for realizing high performance, high mass productivity, and low cost.
- the present invention relates to linearly polarized antennas suitable for UWB (Ultra-wideband) radars to be used in the future as radars) and radar devices using the same.
- UWB Ultra-wideband
- this antenna is required to have low loss and high gain in order to suppress useless power consumption so that it can be probed by weak radio waves as defined by UWB and can be driven by a battery. Therefore, it is necessary that the array can be easily achieved.
- the feeding portion of the antenna element can be manufactured by a pattern printing technique for low cost.
- UWB radar is supposed to use the 22-29GHz band.
- the radio astronomy and the earth exploration satellite service (EESS) passive sensors are protected.
- RR radio wave emission prohibited band (23.6 to 24.0 GHz) is included.
- Average power density in GHz is 41.3 dBm or less, peak power density is 0 dBmZ50M
- Non-Patent Document 1 FCC 02-48 New Part 15 Rules, FIRST REPORT A ND ORDER
- the FCC is a method that does not rely on the side lobe of the antenna.
- the following non-patent document 2 shows that the radiated power density of the RR radio wave emission forbidden band is 61.3 dBm Improve the revised rules!
- Non-Patent Literature 2 Second Report and Order and Second Memorandum Opinion and Order "FCC 04—285, Dec. 16, 2004
- a conventional UWB radar employs a system in which a continuous wave (CW) from a continuous oscillator is turned on and off with a semiconductor switch.
- CW continuous wave
- the SRD band is very close to the RR radio wave emission prohibited band, and EES
- Non-Patent Literature 3 Residual ⁇ carrier free burst oscillator for automotive UWD radar applications, "Electronics Letters, 28 th April 2005, Vol. 41, No. 9
- the burst oscillator oscillates only when the pulse is on, and stops when the pulse is off. If such a burst oscillator is used in a UWB radar, no residual carrier is generated.
- the band shown by the solid line in FIG. 18 can be used for the UWB radar, and as a result, the radiated power density in the RR radio wave emission prohibited band can be kept sufficiently low. It becomes possible.
- the antenna has a characteristic with a sharp gain and a drop (notch) in the RR radio wave emission prohibited band, by using this antenna in combination with the burst oscillator, UWB radar that meets the new FCC regulations can be realized.
- the present invention intends to provide an antenna suitable for UWB radar having a gain notch in such an RR radio wave emission prohibited band.
- a so-called patch antenna is known in which a rectangular or circular flat antenna element is patterned on a dielectric substrate.
- this patch antenna is generally in a narrow band, and in order to widen it, it is necessary to use a substrate having a low dielectric constant and increase its thickness.
- a low-loss substrate is required for use in the quasi-millimeter wave band, and Teflon (registered trademark) is known as such a substrate.
- antennas There is a known dipole antenna consisting of a pair of triangles called antennas.
- the object of the present invention is to suppress the influence of surface waves as described above, have good radiation characteristics over a wide band, suppress radiation in the RR radio wave emission prohibited band, and achieve high mass productivity and low cost. It is to provide a linearly polarized antenna capable of realizing the above and a radar apparatus using the same.
- a dielectric substrate (21, 21 ', 21 "),
- the linearly polarized antenna elements (23, 23 ') formed on the opposite surface of the dielectric substrate and one end sides thereof are connected to the ground plane conductor, and penetrate the dielectric substrate along the thickness direction.
- the antenna element is formed of a dipole antenna element having a pair of input terminals (25a, 25b),
- One end side is in contact with one of the pair of input terminals of the dipole antenna element. And the other end side further includes a feed pin (25) provided penetrating the dielectric substrate and the ground plane conductor,
- the other force of the pair of input terminals of the dipole antenna element is provided to provide a linearly polarized antenna according to the first aspect, wherein the ground plane conductor is short-circuited through the dielectric substrate.
- the linearly polarized antenna according to the first aspect is provided, wherein the frame-shaped conductor (32, 32 ′) has at least a pair of non-uniform width portions facing each other with the antenna element interposed therebetween. .
- a linearly polarized antenna according to a third aspect wherein the pair of non-uniform width portions are a pair of triangular portions.
- a plurality of sets of the antenna element formed on the dielectric substrate and the power supply pins connected to one end of one of the pair of input terminals of the antenna element are provided, and the plurality of metal posts constituting the cavity and the A frame-shaped conductor is formed in a lattice shape so as to surround each of the plurality of sets of antenna elements,
- a third feature of the present invention is further provided with a power feeding section (40) provided on the ground plane conductor side for distributing and supplying an excitation signal to each of the plurality of antenna elements via the plurality of power feed pins.
- a power feeding section (40) provided on the ground plane conductor side for distributing and supplying an excitation signal to each of the plurality of antenna elements via the plurality of power feed pins.
- the power supply section includes a power supply dielectric substrate (41) provided on the opposite side of the dielectric substrate across the ground plane conductor, and a microstrip type formed on the surface of the power supply dielectric substrate.
- the linearly polarized antenna according to the fifth aspect is provided, characterized in that the linearly polarized antenna is configured by the power feeding line (42).
- Each of the dipole antenna elements has a predetermined base width W and a predetermined height L.
- Each of the dipole antenna elements has a predetermined protrusion width W and a predetermined height L.
- Z2 is formed in a deformed rhombus shape, and one top is arranged opposite to each other
- a linearly polarized antenna according to the second aspect characterized in that it constitutes a bowtie antenna, is provided.
- a first linearly polarized antenna element (23, 23 ') and a second linearly polarized antenna element (23', 23) are provided on the dielectric substrate (21 ").
- the plurality of metal posts (30) are connected at one end side to the ground plane conductor, penetrate the dielectric substrate along its thickness direction, and each other end side is the dielectric substrate. Are provided at predetermined intervals so as to separate and surround the first linearly polarized antenna element and the second linearly polarized antenna element, respectively. Make up the separated cavity,
- the first linearly polarized antenna element and the second linearly polarized antenna element are provided at predetermined intervals so as to be separated from each other.
- the other end sides of the plurality of metal posts are short-circuited along the direction of arrangement, and are directed in the direction of the first linearly polarized antenna element and the second linearly polarized antenna element.
- a straight line according to the first aspect characterized in that a first frame-like conductor (32) and a second frame-like conductor (32 ') are provided on the opposite surface side of the dielectric substrate extending a predetermined distance.
- a polarized antenna is provided.
- One of the first linearly polarized antenna element and the second linearly polarized antenna element is applied as a transmission antenna (51) of the radar apparatus (50), and the other is the radar apparatus (50).
- a linearly polarized antenna according to the ninth aspect, which is applied as a receiving antenna (52), is provided.
- the cavity and the frame conductor constitute a resonator, and the resonator and the antenna element are formed.
- the frequency characteristics are such that the gain of the linearly polarized antenna decreases within a predetermined range.
- the structural parameters are the inner dimension Lw of the cavity, the rim width L of the frame conductor,
- a linearly polarized antenna according to the eleventh aspect is provided.
- the receiving antenna and the transmitting antenna are constituted by first and second linearly polarized antenna elements (23, 23 ′), and the first and second linearly polarized antenna elements (23, 23). ')
- a dielectric substrate (21, 21 ', 21 "),
- the linearly polarized antenna elements (23, 23 ') formed on the opposite surface of the dielectric substrate and one end sides thereof are connected to the ground plane conductor, and penetrate the dielectric substrate along the thickness direction.
- a frame-shaped conductor (32, 3) provided with a short circuit along the direction and extending a predetermined distance in the direction of the antenna element,
- Each of the plurality of metal posts (30) has one end side connected to the ground plane conductor, penetrates the dielectric substrate along the thickness direction, and each other end side is an opposite surface of the dielectric substrate.
- the first linearly polarized antenna element and the second linearly polarized antenna element are provided at predetermined intervals so as to be separated from each other.
- the first linearly polarized antenna element and the second linearly polarized antenna element are provided at predetermined intervals so as to be separated from each other.
- the other end sides of the plurality of metal posts are short-circuited along the direction of arrangement, and are directed in the direction of the first linearly polarized antenna element and the second linearly polarized antenna element.
- a radar device (50) characterized in that a first frame-like conductor (32) and a second frame-like conductor (3 ⁇ ) are provided on the opposite surface side of the dielectric substrate, extending a predetermined distance. Is provided.
- the antenna element is formed of a dipole antenna element having a pair of input terminals (25a, 25b),
- One end side is further connected to one of the pair of input terminals of the dipole antenna element, and the other end side further includes a feed pin (25) provided penetrating the dielectric substrate and the ground plane conductor.
- a radar apparatus (50) according to a thirteenth aspect is provided, wherein the other force of the pair of input terminals of the dipole antenna element is used to short-circuit the ground plane conductor through the dielectric substrate.
- a radar apparatus (50) according to a thirteenth aspect is provided, wherein the frame conductor (32, 32 ') has at least a pair of non-uniform width portions facing each other with the antenna element interposed therebetween.
- a radar apparatus (50) according to the fifteenth aspect is provided, wherein the pair of non-uniform width portions are a pair of triangular portions.
- a plurality of sets of the antenna element formed on the dielectric substrate and the power supply pins connected to one end of one of the pair of input terminals of the antenna element are provided, and the plurality of metal posts constituting the cavity and the A frame-shaped conductor is formed in a lattice shape so as to surround each of the plurality of sets of antenna elements,
- a power supply section (40) provided on the ground plane conductor side and for distributing and supplying an excitation signal to the plurality of antenna elements via the plurality of sets of power supply pins is further provided.
- a radar apparatus (50) according to an aspect of the present invention is provided.
- the power supply section includes a power supply dielectric substrate (41) provided on the opposite side of the dielectric substrate across the ground plane conductor, and a microstrip type formed on the surface of the power supply dielectric substrate.
- a radar apparatus (50) according to a seventeenth aspect is provided, characterized in that the radar apparatus (50) is configured by a power supply line (42).
- Each of the dipole antenna elements has a predetermined bottom width W
- a radar device (50) according to a fourteenth aspect is provided, wherein the radar device (50) is configured to have a bow-tie antenna formed in a triangular shape having Z2 and arranged with the tops facing each other.
- Each of the dipole antenna elements has a predetermined protrusion width W and a predetermined height L.
- a radar apparatus (50) which comprises a bow tie antenna having B Z2 and formed in a deformed rhombus shape and having one apex facing each other.
- a resonator is formed by the cavity and the frame-shaped conductor, and the resonance frequency of the resonator is set to a desired value by adjusting structural parameters of the resonator and the antenna element. It becomes frequency characteristics that the gain of the polarization antenna falls within a predetermined range.
- a radar apparatus (50) according to any one of the thirteenth to twentieth aspects is provided.
- the structural parameters include an internal dimension Lw of the cavity, a rim width L of the frame-shaped conductor,
- a radar device (50) according to the twenty-first aspect is provided.
- metal posts penetrating the dielectric substrate are arranged so as to surround the antenna element to form a cavity structure, and the tips of the metal posts are arranged in the direction of alignment.
- a frame-shaped conductor (rimZconducting rim) that is short-circuited along the antenna element and extended in the antenna element direction by a predetermined distance is provided, so that the generation of surface waves can be suppressed and the antenna radiation characteristics can be made to the desired characteristics.
- the frequency characteristic of the antenna gain can have a sharp drop (notch) in the RR radio wave emission prohibited band by utilizing the resonance phenomenon of the cavity. This is effective in reducing radio interference with the EESS and radio astronomy services mentioned above.
- linearly polarized antenna according to the present invention even when arrayed, it is possible to prevent the characteristics from being disturbed by the influence of surface waves between the antenna elements.
- FIG. 1 is a perspective view for explaining the configuration of the first embodiment of the linearly polarized antenna according to the present invention.
- FIG. 2 is a front view for explaining the configuration of the linearly polarized antenna according to the first embodiment of the present invention.
- FIG. 3 is a rear view for explaining the configuration of the linearly polarized antenna according to the first embodiment of the present invention.
- 4A is an enlarged sectional view taken along line 4A-4A in FIG.
- FIG. 4B is an enlarged sectional view taken along line 4B-4B in the modification of FIG.
- FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG.
- FIG. 6 is an enlarged front view for explaining the configuration of the main part of the first embodiment of the linearly polarized antenna according to the present invention.
- FIG. 7 is an enlarged front view for explaining the configuration of a modification of the main part of the linearly polarized antenna according to the first embodiment of the present invention.
- FIG. 8 is a characteristic diagram when the configuration of the main part of the linearly polarized antenna according to the first embodiment of the present invention is omitted and when the configuration of the main part is used.
- FIG. 9 is a front view for explaining the configuration of an array to which the second embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 10 is a side view for explaining the configuration of the array to which the second embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 11 is a rear view for explaining the configuration of the array to which the second embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 12A is an enlarged front view for explaining the configuration of the main part to which the third embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 12B is an enlarged front view for explaining the configuration of a modification of the main part to which the third embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 12C is an enlarged front view for explaining the structure of another modified example of the main part to which the third embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 13 shows the case of using the configuration of the main part to which the modification of the third embodiment of the linearly polarized antenna according to the present invention shown in FIG. 12C is applied, and the straight line according to the present invention shown in FIG. FIG. 6 is a characteristic diagram when using the configuration of the main part to which the first embodiment of the polarization antenna is applied.
- FIG. 14 is a front view for explaining the configuration of the array to which the fourth embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 15 is a characteristic diagram when an array configuration to which the fourth embodiment of the linearly polarized antenna according to the present invention is applied is used.
- FIG. 16 is a block diagram for explaining a configuration of a radar apparatus to which a fifth embodiment according to the present invention is applied.
- FIG. 17 is a front view for explaining the configuration of a linearly polarized antenna used in a radar apparatus to which the fifth embodiment of the present invention is applied.
- Figure 18 shows the quasi-millimeter wave UWB spectrum mask and the desired frequency band (recommended) FIG.
- 1 to 5 show a basic structure of a linearly polarized antenna 20 according to a first embodiment to which the present invention is applied.
- FIG. 1 is a perspective view shown to explain the configuration of the first embodiment of the linearly polarized antenna according to the present invention.
- FIG. 2 is a front view for explaining the configuration of the first embodiment of the linearly polarized antenna according to the present invention.
- FIG. 3 is a rear view for explaining the configuration of the first embodiment of the linearly polarized antenna according to the present invention.
- FIG. 4A is an enlarged sectional view taken along line 4A-4A of FIG.
- FIG. 4B is an enlarged sectional view taken along line 4B-4B in the modification of FIG.
- FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG.
- the linearly polarized antenna according to the present invention basically includes a dielectric substrate 21, and a ground plane conductor 22 superposed on one surface side of the dielectric substrate 21, as shown in Figs.
- a linearly polarized antenna element 23 formed on the opposite surface of the dielectric substrate 21 and one end of each of the antenna elements 23 are connected to the ground plane conductor 22 and penetrates the dielectric substrate 21 along its thickness direction.
- each other end side extends to the opposite surface of the dielectric substrate 21 and is provided at a predetermined interval so as to surround the antenna element 23, whereby a plurality of metal posts 30 constituting a cavity, and the dielectric substrate 21 is provided with a frame-like conductor 32 which is short-circuited along the direction of arrangement of the other end sides of the plurality of metal posts 30 on the opposite surface side of 21 and extends in the direction of the antenna element 23 by a predetermined distance.
- the linearly polarized antenna 20 is a substrate made of a material having a low dielectric constant (around 3.5), for example, a dielectric substrate 21 having a thickness of 1.2 mm,
- pattern printing is performed on the ground plane conductor 22 provided on one side of the dielectric substrate 21 (the rear side in FIGS. 1 and 2) and on the opposite side of the dielectric substrate 21 (the front side in FIGS. 1 and 2).
- the carrier formed by technology Dipole type antenna element 23 consisting of a pair of element antennas 23a and 23b for exciting the biti with linearly polarized waves, and one feed pin 25 and one short circuit for feeding the antenna element 23 It has a pin (short pin) 26.
- feed pin 25 and short-circuit pin 26 each penetrate through dielectric substrate 21 in the thickness direction, and feed pin 25 further penetrates hole 22a of ground plane conductor 22, and short-circuit pin 26 is ground plane guide. Shorted to body 22.
- the dipole antenna element 23 is a balanced element antenna, balanced feeding is also possible.
- the feeding pin 25 is provided on one element antenna 23 b of the pair of element antennas 23 a and 23 b constituting the dipole antenna element 23.
- the power is fed by a coaxial cable, a coplanar line using the ground plane conductor 22 as a ground line, or a microstrip line described later, and the other element antenna 23a is short-circuited to the ground plane conductor 22 via a short-circuit pin 26.
- the material of the dielectric substrate 21 a material such as R04003 (Rogers) having a low loss in the quasi-millimeter wave band can be used.
- a material of the dielectric substrate 21 any material having a low loss and a dielectric constant of about 2 to 5 can be used.
- a glass cloth Teflon substrate or various thermosetting resin substrates are candidates. .
- the linearly polarized antenna having only such a structure, as described above, the surface wave along the surface of the dielectric substrate 21 is excited, so that it is desired as a linearly polarized antenna due to the influence of the surface wave.
- the characteristics of can not be obtained.
- one end side is connected to the ground plane conductor 22 and penetrates the dielectric substrate 21.
- the other end side extends to the opposite surface of the dielectric substrate 21 and adopts a cavity structure formed, for example, by providing cylindrical metal posts 30 at predetermined intervals so as to surround the antenna element 23. Yes.
- each metal post 30 is sequentially arranged along the arrangement direction on the opposite surface side of the dielectric substrate 21.
- a frame-like conductor 32 is provided which is short-circuited and has a connecting position force with each metal post 30 extending a predetermined distance in the direction of the antenna element 23.
- the surface wave can be suppressed by the synergistic effect of the cavity structure and the frame-shaped conductor 32.
- the plurality of metal posts 30 are formed with a plurality of holes 301 penetrating the dielectric substrate 21, and are subjected to plating (through-hole plating) on the inner walls of the plurality of holes 301.
- plating through-hole plating
- the lower ends of the plurality of hollow metal posts 3 () by through-hole plating are connected to the ground plane conductor 22 via lands 302 formed by pattern printing technology on one end side of the dielectric substrate 21. It is made to be.
- the frequency used for this linearly polarized antenna 20 is 26 GHz in the UWB, and is a dipole type.
- the antenna element 23 has a pair of input terminals 25a and 25b, and uses a triangular bow tie antenna having a width W of about 1.8 mm and an overall length L of about 3.5 mm.
- an example of a triangular shape is shown as the antenna element 23 that should be adopted for the linearly polarized antenna 20.
- the antenna element 23 to be employed in the linearly polarized antenna 20 has a pair of input terminals 25a and 25b instead of a triangular shape, and has a predetermined protruding width.
- a modified diamond-shaped antenna element 23 having W and an overall length L can also be used.
- the outer shape of the dielectric substrate 21 is a square centered on the center of the antenna element 23. As shown in Fig. 2, the length of one side is L (hereinafter referred to as the outer length), and the The outer shape is also a concentric square.
- the cavity has an inner dimension Lw, and a distance extending from the cavity inner wall of the frame conductor 32 (hereinafter referred to as a rim width) to L. To do.
- the diameters of the plurality of metal posts 30 forming the cavity are each 0.3 mm, and the interval between the metal posts 30 is 0.9 mm.
- FIG. 8 shows radiation directivities on the vertical planes (yz plane in FIGS. 1 and 2) of three types of antennas using bowtie antennas.
- F1 is provided with a plurality of metal posts 30 and a frame-like conductor 32.
- F2 indicates the radiation directivity when there is a cavity due to a plurality of metal posts 30 but there is no frame-like conductor 32.
- F3 indicates the radiation directivity when both the cavity by the plurality of metal posts 30 and the frame-shaped conductor 32 are provided.
- the radiation characteristics required for a linearly polarized antenna are symmetric and broad single-peak characteristics with the 0 ° direction as the center.
- the radiation directivity F1 in the case where the cavity and the frame-shaped conductor 32 by the plurality of metal posts 30 are not provided has a large asymmetry around the 0 ° direction. Although it is not a unimodal characteristic, it becomes directional. [0098] This is because, as can be easily imagined, there is no cavity due to the plurality of metal posts 30, and therefore, the wave excited by the bow tie antenna is diffused in the dielectric substrate 21 as a surface wave. This is the result.
- the radiation directivity F3 when both the cavity with the metal posts 30 and the frame-shaped conductor 32 are provided is a symmetric and broad unidirectional characteristic with respect to the 0 ° direction. It has become.
- the rim width L suppresses surface waves and, as will be described later, the RR radio wave emission prohibited band.
- a typical value for the rim width L is 1.2 mm.
- This rim width L 1.2 mm corresponds to a surface wave wavelength of approximately 1Z4.
- a transmission path with a length of ⁇ g / 4 ( ⁇ g is the wavelength in the tube) is formed with an infinite impedance to the surface wave.
- the rim width L may be changed and set according to the frequency.
- the linearly polarized antenna 20 of the above embodiment is used for various UWB communication systems. It is possible to be.
- the linearly polarized antenna 20 of the first embodiment is used when the gain required for the UWB radar or the like is insufficient or when the beam needs to be narrowed.
- FIG. 9 to FIG. 11 show the configuration of an arrayed linearly polarized antenna 20 ′ as a second embodiment of the linearly polarized antenna according to the present invention.
- FIG. 9 is a front view for explaining the configuration of the array to which the second embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 10 is a side view for explaining the configuration of the array to which the second embodiment of the linearly polarized antenna according to the present invention is applied.
- FIG. 11 is a rear view for explaining the configuration of a rotating array to which the second embodiment of the linearly polarized antenna according to the present invention is applied.
- the linearly polarized wave antenna 20 ' according to the second embodiment includes a vertically long rectangular common dielectric substrate 21' and ground plane conductor 22 ', and the antenna element 23 of the first embodiment is Consists of an array of 4 rows! RU
- a power feeding unit 40 for distributing and feeding the excitation signal to a plurality of antenna elements is formed.
- antenna elements 23 (1) to 23 (8) are formed in two rows and four stages by a triangular bowtie antenna formed in the same manner as in the first embodiment. It is provided.
- each antenna element 23 (1) to 23 (8) is formed by arranging a plurality of metal posts 30 whose one end is connected to the ground plane conductor 2 ⁇ as in the first embodiment. It is surrounded by
- each antenna element 23 (1) to 23 (8) has a frame-like conductor whose connecting position force to each metal post 30 extends in the direction of each antenna element 23 by a predetermined distance (the above-mentioned rim width L). 32 ⁇
- each metal post 30 is connected along the alignment direction.
- each antenna element 23 (1) to 23 (8) generates surface waves for each antenna element. It becomes a configuration that can suppress it!
- the cavity between the adjacent antenna elements and the frame-shaped conductor 32 ' It can be formed in a lattice shape as a whole.
- the frame-shaped conductor 32 'provided between two adjacent two antenna elements is formed so as to extend to both antenna elements by a predetermined distance (the rim width L described above).
- the hole 22 of the conductor 22 ' is passed through non-conducting, and further passes through the power feeding dielectric substrate 41 constituting the power feeding section 40, and the other end is projected from the surface.
- the microstrip type power feeding lines 42 (a) to 42 (h) and 42 having the ground plane conductor 22 ′ as the ground are provided. (;) To 42 () are formed.
- the power supply lines 42 (a) to 42 (h) and 42 (1 /;) to 42 () are connected to the input / output power supply line 42a connected to the transmitter or receiver (not shown).
- the line 42b 'branched rightward from the input / output power supply line 42a is divided into two power supply lines 42c' and 42 ⁇ 'which are bifurcated up and down in the same way as the left side.
- the four lines 42c 'and 42d' have four feed lines 42e 'to 42, which are bifurcated respectively.
- each antenna element 23 generates a surface wave by means of a plurality of metal posts 30 and a frame-like conductor 32'. Therefore, the mutual coupling force between the elements is reduced, and a desired radiation characteristic having a single peak directivity is obtained as in the first embodiment described above.
- the antenna elements are arranged in four stages in the vertical direction to form an array! Even if it contains a component to the RR radio emission prohibition band in the UWB band, it can suppress the radiation in the high elevation direction, which is a problem, so it is a disturbance to the RR radio emission prohibition band There is also an effect of reducing.
- the feed section 40 of the linearly polarized antenna 20 'arranged as described above distributes and supplies an excitation signal to each antenna element through a microstrip-type feed line 42 formed on a feed dielectric substrate 41.
- a microstrip-type feed line 42 formed on a feed dielectric substrate 41.
- the latter method has an advantage that the feeding dielectric substrate 41 can be omitted.
- the linearly polarized antenna of the present invention comprises a resonator by providing the dielectric substrate 21 with a plurality of metal posts 30 and a frame-like conductor 32, and this resonator is linearly polarized. It can be considered that the antenna element 23 is excited.
- the linearly polarized antenna of the present invention constitutes a resonator, there is a resonance frequency.
- the input impedance of the linearly polarized antenna becomes very large and it does not radiate.
- the resonance frequency of the resonator is determined by the structure parameter of the resonator and the linearly polarized antenna element.
- this structural parameter includes the internal dimension Lw and the rim width L of the cavity, as well as the basic dimension.
- the frequency characteristic of the antenna gain is that a deep drop (notch) force S is generated in the vicinity of the resonance frequency.
- this resonance frequency can be matched with, for example, the above-mentioned RR radio wave emission prohibited band (23.6-24. OGHz), such an antenna can be used as a transmitting antenna for UWB radar. Interference with satellites and the like can be greatly reduced.
- FIG. 12A, 12B, and 12C are respectively for explaining the configuration of the main part to which the third embodiment of the linearly polarized antenna 20 according to the present invention is applied and the configuration of two modified examples different from the configuration.
- FIG. 12A, 12B, and 12C are respectively for explaining the configuration of the main part to which the third embodiment of the linearly polarized antenna 20 according to the present invention is applied and the configuration of two modified examples different from the configuration.
- FIG. 12A, 12B, and 12C are respectively for explaining the configuration of the main part to which the third embodiment of the linearly polarized antenna 20 according to the present invention is applied and the configuration of two modified examples different from the configuration.
- FIG. 12A, 12B, and 12C are respectively for explaining the configuration of the main part to which the third embodiment of the linearly polarized antenna 20 according to the present invention is applied and the configuration of two modified examples different from the configuration.
- FIG. 12A, 12B, and 12C are respectively for explaining the configuration of the main part to which the third embodiment of the linearly
- the linearly polarized antenna 20 shown in FIGS. 12A, B, and C is characterized in that the width of the frame conductor 32 is not uniform.
- the linearly polarized antenna 20 shown in Fig. 12A shows an example in the case where it is corrugated as an arbitrary shape that can be taken in order to make the widths of the frame conductors 32 uneven.
- the linearly polarized antenna 20 shown in Fig. 12B shows an example of a case where the linear conductor 20 is configured by an arc as an arbitrary shape that can be taken to make the widths of the frame-shaped conductors 32 uneven.
- the linearly polarized antenna 20 shown in Fig. 12C shows an example in which the linear conductor 32 is configured with a triangle as an arbitrary shape that can be taken to make the widths of the frame-shaped conductors 32 uneven.
- FIG. 13 is a diagram for explaining the effect when the shape of the frame-shaped conductor 32 shown in FIG. 12C, in which the configuration of the frame-shaped conductor 32 is the simplest in the linearly polarized antenna 20, is a triangle.
- hi in Fig. 12C is selected to be about 0.26mm.
- H2 is about 1.26mm.
- the frequency width at the point where lOdBi is reduced from the gain at 26 GHz is about 260 MHz in the case of the rectangular frame-shaped conductor 32 shown by the broken line, whereas it is shown by the solid line. In the case of the triangular frame-shaped conductor 32, it is over 500 MHz.
- the notch bandwidth is not sufficient to cover the width of the RR radio wave emission prohibited band of 400 MHz.
- the notch bandwidth sufficiently covers the RR radio wave emission prohibited band width of 400 MHz.
- FIG. 14 is a front view for explaining the configuration of the main part to which the fourth embodiment of the linearly polarized antenna according to the present invention is applied.
- an array antenna is configured using an antenna element in which the shape of the frame-shaped conductor 32 is a triangle. It is.
- the configuration of the array antenna shown in FIG. 14 is the same 2 ⁇ 4 element array as FIG.
- FIG. 15 shows the frequency characteristics of the antenna gain of the array antenna shown in FIG.
- the IJ gain is kept at 5 dBi for 25 to 29 GHz, and 23.6 to
- the linearly polarized antenna according to the present invention has a notch by appropriately selecting a structural parameter of a resonator, a frame-shaped conductor, or a bow-tie antenna element. It is possible to cover the above-mentioned RR radio wave emission prohibition band with the frequency and the bandwidth of the RR.
- the frequency at which the notch is generated can be obtained by appropriately selecting one or both of the structural parameters of the resonator and the antenna element. It can be easily matched with the RR radio wave emission prohibited band.
- the linearly polarized antenna according to the present invention preferably includes the antenna element 23, 23 'force, a dipole antenna element 23 having a pair of input terminals 25a, 25b, in addition to the basic configuration described above.
- One end side of which is connected to one of the pair of input terminals 25a, 25b of the dipole antenna elements 23, 23 ', and the other end side is connected to the dielectric substrates 21, 21' and the ground plane.
- a feed pin 25 provided through the conductors 22 and 22 'is further provided, and the other of the pair of input terminals 25a and 25b of the dipole antenna elements 23 and 23' is the dielectric substrate 21. , 21 ', and the ground plane conductors 22 and 22' are short-circuited!
- the linearly polarized antenna according to the present invention preferably has at least a pair of the frame-shaped conductors 32, 32 'and the antenna elements 23, 23' facing each other.
- the non-uniform width portion for example, a pair of triangular portions.
- the linearly polarized antenna according to the present invention preferably has the antenna elements 23, 23 'formed on the dielectric substrates 21, 21' and the antenna element 23.
- a plurality of power supply pins 25 each having one end connected to one of the pair of input terminals 25a and 25b, and a plurality of metal posts 30 and the frame-shaped conductors 32 constituting the cavity.
- 32 ' is formed in a lattice shape so as to surround each of the plurality of sets of antenna elements 23, 23', provided on the ground plane conductors 22, 22 'side, and the plurality of sets of antenna elements 23, 23'
- a power supply unit 40 for distributing and supplying an excitation signal via a plurality of sets of power supply pins 25 is further provided.
- the linearly polarized antenna according to the present invention is preferably configured such that the power feeding unit 40 includes the dielectric substrates 21, 21 'sandwiched between the ground plane conductors 22, 22'.
- a power supply dielectric substrate 41 provided on the opposite side and a shape formed on the surface of the power supply dielectric substrate 41. It is characterized by a microstrip-type feed line 42 formed.
- the linearly polarized antenna according to the present invention is preferably configured so that the dipole antenna elements 23 and 23 'force each have a predetermined base width W and a predetermined width.
- the bow is formed in a triangular shape with a height of Z2 and the tops are opposite to each other.
- the linearly polarized antenna according to the present invention preferably has the dipole antenna elements 23 and 23 'force each having a predetermined projecting width W.
- the linearly polarized antenna according to the present invention preferably includes the cavity and the frame conductor to form a resonator, and the resonator and the antenna elements 23, 23 '
- the frequency characteristic is such that the gain of the linearly polarized antenna decreases within a predetermined range.
- the linearly polarized antenna according to the present invention is preferably configured such that the structural parameters include an internal dimension Lw of the cavity, a rim width L of the frame-shaped conductor,
- FIG. 16 is a block diagram for explaining the configuration of a radar apparatus to which the fifth embodiment of the present invention is applied.
- FIG. 16 shows a configuration of a UWB radar apparatus 50 that uses the linearly polarized antennas 20 and 20 ′ according to the above-described embodiments as the transmitting antenna 51 and the receiving antenna 52, respectively.
- the radar device 50 shown in FIG. 16 is an on-vehicle radar device, and the transmission unit 54 that receives timing control by the control unit 53 generates a pulse wave with a carrier frequency of 26 GHz at a predetermined period to generate a transmission antenna. Radiates from space 51 to space 1 to be explored. The pulse wave reflected and returned by the object la in space 1 is received by the receiving antenna 52, and the received signal is input to the receiving unit 55.
- the receiving unit 55 performs detection processing on the received signal in response to timing control by the control unit 53.
- the signal obtained by this detection processing is output to the analysis processing unit 56, where analysis processing is performed on one space to be searched, and the analysis result is notified to the control unit 53 if necessary.
- the linearly polarized antennas 20 and 20 'described above can be used as the transmitting antenna 51 and the receiving antenna 52 of the radar apparatus 50 having such a configuration.
- FIG. 17 shows a linearly polarized antenna 60 in consideration of the above points.
- the linearly polarized antenna 2 of FIG. 15 described above first and second linearly polarized antennas having the same configuration as FIG.
- FIG. 17 is a front view for explaining the configuration of the linearly polarized antenna 60 used in the radar apparatus to which the fifth embodiment of the present invention is applied.
- the transmitting antenna 51 and the receiving antenna 52 provided in the linearly polarized antenna 60 surround each antenna element 23 by the cavity structure 32 'and the frame-shaped conductor 32'.
- it since it is not affected by surface waves, it has a wide band and gain characteristics that suppress radiation to the RR radio wave emission prohibited band.
- the feeding force (not shown) of the transmitting antenna 51 and the receiving antenna 52 shown in Fig. 17 has the array structure shown in Fig. 15 described above.
- the reflected wave from the object la which has a wave characteristic and is radiated from the transmitting antenna 51 to the search space, can be received by the receiving antenna 52 with high sensitivity.
- the transmission antenna 51 and the reception antenna 52 of the radar apparatus 50 may be the same as the linearly polarized antennas 20 and 20 20.
- the radar apparatus basically includes a transmission unit 54 that radiates radar pulses to the space 1 via the transmission antenna 51, and the radar filter that returns from the space 1.
- a receiving unit 55 that receives a reflected reflection of the light via the receiving antenna 52
- an analysis processing unit 56 that searches for the object la existing in the space 1 based on the reception output from the receiving unit 55
- an analysis processing A control unit 53 that controls at least one of the transmission unit 54 and the reception unit 55 based on an output from the unit 56, and the transmission antenna 51 and the reception antenna 52 are first and second linearly polarized wave types.
- Antenna elements 23 and 23 ', and the first and second linearly polarized antenna elements 23 and 23' 1S are respectively dielectric substrates 21, 21 'and 21 ", and the dielectric substrates 21, Ground plane conductors 22 and 22 'superposed on one side of 21' and 21 ", and linearly polarized antenna elements 2 3 and 23 formed on the opposite side of the dielectric substrates 21, 21 'and 21''And one end of each is connected to the ground plane conductors 22, 22', and the dielectric substrate 21, 2, 21 " And the other end of each extends to the opposite surface of the dielectric substrate 21, 21 /, 21g, and is provided at a predetermined interval so as to surround the antenna elements 23, 23 '.
- a plurality of metal bumps 30 constituting a cavity and the other side of the plurality of metal posts 30 are short-circuited on the opposite side of the dielectric substrates 21, 21 /, 21 ′′ along the arrangement direction thereof; Frame-shaped conductors 32 and 32 'provided to extend in the direction of the antenna elements 23 and 23', and a plurality of metal posts 30 are connected to the ground plane conductors 22 and 22 'at one end thereof.
- the first linearly polarized antenna element 23 extends through the dielectric substrate 21 "along its thickness direction, and the other end of each extends to the opposite surface of the dielectric substrate 21".
- the first linearly polarized antenna elements 23, 23 ′ and the second linearly polarized antenna elements 23, 23 ′ extend a predetermined distance in the direction opposite to the dielectric substrate 21 ′′.
- the first frame-shaped conductor 32 and the second frame-shaped conductor 3 ⁇ are provided.
- the radar apparatus according to the present invention is preferably a dipole antenna having a pair of input terminals 25a and 25b, preferably the antenna elements 23 and 23 ', in addition to the basic configuration described above. Formed on the elements 23 and 23 ′, one end side is connected to one of the pair of input terminals 25a and 25b of the dipole antenna elements 23 and 23 ′, and the other end side is connected to the dielectric substrate 21 and It further includes a feed pin 25 provided through the ground plane conductors 22 and 22 ', and the other of the pair of input terminals 25a and 25b of the dipole antenna elements 23 and 23' is the dielectric substrate 21 ". It is characterized in that the ground plane conductors 22 and 22 'are short-circuited.
- the radar apparatus according to the present invention preferably has at least a pair of inequalities facing each other with the frame-shaped conductors 32, 32 'force sandwiched between the antenna elements 23, 23', in addition to the above basic configuration. It has a width portion, for example, a pair of triangular portions.
- the radar device preferably has the above basic configuration, and preferably the antenna elements 23, 23 'formed on the dielectric substrate 21 "and the antenna elements 23, 23'.
- a plurality of sets of the power supply pins 25 connected to one of the pair of input terminals 25a and 25b are provided, and the plurality of metal posts 30 and the frame-shaped conductors 32 and 32 ′ constituting the cavity are
- the radar apparatus according to the present invention, the basic configuration mosquito ⁇ Ete, preferably, the paper collecting section 40, opposite side of the dielectric substrate 21 'sandwiching the ground plane conductor 22, 22 1
- the power supply dielectric substrate 41 and a microstrip-type power supply line 42 formed on the surface of the power supply dielectric substrate 41 are provided!
- the radar apparatus according to the present invention preferably has the above-mentioned basic configuration, and preferably the dipole antenna elements 23 and 23 'have a predetermined base width W and a predetermined height L, respectively.
- a bow tie antenna which is formed in a triangular shape with Z2 and whose tops are opposed to each other.
- the radar apparatus according to the present invention preferably has the above basic configuration, and preferably the dipole antenna elements 23 and 23 'each have a predetermined protrusion width W and a predetermined height L.
- Bodies that have a Z2 shape and are formed in a deformed rhombus shape, with their tops facing each other. It is characterized by constructing a Utai antenna.
- a resonator is configured by the cavity and the frame-shaped conductors 32 and 32 ', in addition to the basic configuration described above, and the resonator and the antenna element.
- the structural parameters of 23 and 23 'and setting the resonance frequency of the resonator to a desired value the frequency characteristics that the gain of the linearly polarized antenna falls within a predetermined range are obtained. It is characterized by that.
- the radar apparatus according to the present invention is preferably based on the above basic configuration.
- the structural parameters include the inner dimension Lw of the cavity, the rim width L of the frame-shaped conductors 32 and 32 ', in front
- the total length L of the antenna elements 23 and 23 is small, and the width 23 and 23 of the antenna elements are small.
- It is characterized by including at least one.
- the linearly polarized antenna according to the present invention preferably has a first linearly polarized antenna element 23, 23 'as the antenna element, in addition to the basic configuration of the linearly polarized antenna.
- the second linearly polarized antenna elements 23 ′ and 23 are formed on the dielectric substrate 21 ′′, and the plurality of metal posts 30 are connected to the ground plane conductor 22 at one end side thereof, and the dielectric
- the first linearly polarized antenna elements 23, 23 ′, and the other end side of the body substrate 21 ′′ extending along the thickness direction thereof, and extending to the opposite surface of the dielectric substrate 21 ′′.
- the second linearly polarized antenna elements 23 and 23 ' are provided at predetermined intervals so as to be separated from each other, thereby constituting separated cavities, respectively, as the frame-shaped conductors 32 and 32'.
- Each of the first linearly polarized antenna element and the front The other end sides of the plurality of metal posts 30 provided at predetermined intervals so as to separate and surround the second linearly polarized antenna element are short-circuited along the arrangement direction thereof, and the first Linearly polarized antenna elements 23, 23 'and the second linearly polarized antenna elements 23, 23' extending in a direction by a predetermined distance and having a first frame shape on the opposite surface side of the dielectric substrate 21 ⁇ A conductor 32 and a second frame-shaped conductor 32 'are provided.
- the linearly polarized antenna according to the present invention preferably has the first linearly polarized antenna elements 23 and 23 'and the second linearly polarized antenna.
- One of the antenna elements 23, 23 ′ is applied as a transmission antenna 51 of the radar apparatus 50, and the other is applied as a reception antenna 52 of the radar apparatus 50.
- the fifth embodiment described above is an example in which the linearly polarized antenna according to the present invention is used in a UWB radar device.
- the linearly polarized antenna according to the present invention is not limited to a UWB radar device. It can be applied to various communication systems.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US11/794,872 US7623073B2 (en) | 2005-11-14 | 2005-11-14 | Linearly polarized antenna and radar apparatus using the same |
JP2007544040A JP4681614B2 (ja) | 2005-11-14 | 2005-11-14 | 直線偏波アンテナ及びそれを用いるレーダ装置 |
PCT/JP2005/020858 WO2007055028A1 (ja) | 2005-11-14 | 2005-11-14 | 直線偏波アンテナ及びそれを用いるレーダ装置 |
CN2005800467183A CN101103491B (zh) | 2005-11-14 | 2005-11-14 | 线性极化天线及采用其的雷达设备 |
EP05806098.9A EP1950832B1 (en) | 2005-11-14 | 2005-11-14 | Rectilinear polarization antenna and radar device using the same |
Applications Claiming Priority (1)
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PCT/JP2005/020858 WO2007055028A1 (ja) | 2005-11-14 | 2005-11-14 | 直線偏波アンテナ及びそれを用いるレーダ装置 |
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WO2007055028A1 true WO2007055028A1 (ja) | 2007-05-18 |
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PCT/JP2005/020858 WO2007055028A1 (ja) | 2005-11-14 | 2005-11-14 | 直線偏波アンテナ及びそれを用いるレーダ装置 |
Country Status (5)
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US (1) | US7623073B2 (ja) |
EP (1) | EP1950832B1 (ja) |
JP (1) | JP4681614B2 (ja) |
CN (1) | CN101103491B (ja) |
WO (1) | WO2007055028A1 (ja) |
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- 2005-11-14 WO PCT/JP2005/020858 patent/WO2007055028A1/ja active Application Filing
- 2005-11-14 US US11/794,872 patent/US7623073B2/en not_active Expired - Fee Related
- 2005-11-14 JP JP2007544040A patent/JP4681614B2/ja not_active Expired - Fee Related
- 2005-11-14 CN CN2005800467183A patent/CN101103491B/zh not_active Expired - Fee Related
- 2005-11-14 EP EP05806098.9A patent/EP1950832B1/en not_active Expired - Fee Related
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Cited By (18)
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JP2009019944A (ja) * | 2007-07-11 | 2009-01-29 | Toto Ltd | 駆動装置 |
EP2045875A1 (en) * | 2007-10-02 | 2009-04-08 | The Furukawa Electric Co., Ltd. | Antenna for radar device |
US8378893B2 (en) | 2007-10-11 | 2013-02-19 | Raytheon Company | Patch antenna |
WO2009049191A2 (en) * | 2007-10-11 | 2009-04-16 | Raytheon Company | Patch antenna |
WO2009049191A3 (en) * | 2007-10-11 | 2009-06-04 | Raytheon Co | Patch antenna |
JP2009100253A (ja) * | 2007-10-17 | 2009-05-07 | Furukawa Electric Co Ltd:The | レーダ装置用アンテナ |
JP2010511361A (ja) * | 2007-12-18 | 2010-04-08 | ビ−エイイ− システムズ パブリック リミテッド カンパニ− | アンテナ給電モジュール |
JP2009212727A (ja) * | 2008-03-03 | 2009-09-17 | Anritsu Corp | レーダ用アンテナ |
JP2010091379A (ja) * | 2008-10-07 | 2010-04-22 | National Institute Of Information & Communication Technology | パルスレーダ装置 |
US8159409B2 (en) | 2009-01-20 | 2012-04-17 | Raytheon Company | Integrated patch antenna |
CN102956966A (zh) * | 2011-08-12 | 2013-03-06 | 卡西欧计算机株式会社 | 贴片天线装置及电波接收设备 |
JP2015532570A (ja) * | 2012-10-22 | 2015-11-09 | 日本テキサス・インスツルメンツ株式会社 | 導波路カプラー |
JP5676722B1 (ja) * | 2013-11-13 | 2015-02-25 | 三井造船株式会社 | 平面アンテナ及びレーダ装置 |
US10008783B2 (en) | 2013-12-03 | 2018-06-26 | Murata Manufacturing Co., Ltd. | Patch antenna |
JP6490319B1 (ja) * | 2018-05-15 | 2019-03-27 | 三菱電機株式会社 | アレーアンテナ装置及び通信機器 |
WO2019220536A1 (ja) * | 2018-05-15 | 2019-11-21 | 三菱電機株式会社 | アレーアンテナ装置及び通信機器 |
JP2020028078A (ja) * | 2018-08-16 | 2020-02-20 | 株式会社デンソーテン | アンテナ装置 |
JP7181024B2 (ja) | 2018-08-16 | 2022-11-30 | 株式会社デンソーテン | アンテナ装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101103491B (zh) | 2012-01-11 |
EP1950832A1 (en) | 2008-07-30 |
EP1950832B1 (en) | 2013-09-04 |
US20070290939A1 (en) | 2007-12-20 |
JPWO2007055028A1 (ja) | 2009-04-30 |
CN101103491A (zh) | 2008-01-09 |
US7623073B2 (en) | 2009-11-24 |
EP1950832A4 (en) | 2009-12-23 |
JP4681614B2 (ja) | 2011-05-11 |
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