WO2006092862A1 - 導波管スロットアレーアンテナ装置 - Google Patents
導波管スロットアレーアンテナ装置 Download PDFInfo
- Publication number
- WO2006092862A1 WO2006092862A1 PCT/JP2005/003603 JP2005003603W WO2006092862A1 WO 2006092862 A1 WO2006092862 A1 WO 2006092862A1 JP 2005003603 W JP2005003603 W JP 2005003603W WO 2006092862 A1 WO2006092862 A1 WO 2006092862A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waveguide
- center line
- array antenna
- slot
- slots
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- H01Q21/005—Slotted waveguides arrays
Definitions
- the present invention relates to a waveguide slot array antenna device, and more particularly to a waveguide slot array antenna device having polarization in a direction oblique to the tube axis of the waveguide.
- a radio wave radar device (hereinafter referred to as an on-vehicle radar) that is mounted on the front or side of an automobile and used to detect a preceding vehicle, an oncoming vehicle, or an obstacle and prevent a collision with them.
- an on-vehicle radar In order to avoid interference with radio waves emitted by oncoming vehicles, it is useful to use 45-degree polarized waves. This is because the radio waves emitted by one's own vehicle and the radio waves emitted by the oncoming vehicle are orthogonal to each other, thereby avoiding misidentification.
- In-vehicle radars are assumed to use the millimeter wave band, particularly the 76 GHz band.
- the conductor loss of the antenna is greatly increased in the millimeter wave band compared to the microphone mouthband, and the dielectric loss greatly increases when using a dielectric material.
- An antenna with as low a loss as possible is required.
- Non-Patent Document 1 As a low-loss antenna even in the millimeter wave band, a waveguide slot array antenna that supports oblique 45-degree polarization is known (see Non-Patent Document 1).
- Non-Patent Document 1 “wave traveling power feeding” in which one end of a waveguide is excited and the other end is a non-reflective termination, and the other end is short-circuited.
- Two types of power supply methods are described: “Standing Wave Power Supply” with standing waves in the tube.
- traveling wave power feeding it is shown that the dulling lobe level can be lowered by performing the “standing wave power feeding” force that increases the grating lobe level.
- Non-Patent Document 1 Thousands, Koshio, Goto, "45 degree polarization single layer waveguide slot antenna", IEICE General Conference, B-1-178, 1998
- the present invention has been made to solve the above-described problems, and has polarization in a direction oblique to the tube axis of the waveguide.
- An object of the present invention is to obtain a waveguide slot array antenna device capable of suppressing the standing wave ratio and suppressing the grating lobe.
- a waveguide slot array antenna device includes a rectangular slot inclined at a predetermined angle with respect to a tube axis of the rectangular waveguide on a wide surface of the rectangular waveguide between 1Z2 in-tube wavelengths.
- a plurality of waveguide slot array antennas arranged alternately at opposite positions with respect to the center line along the tube axis direction of the wide surface of the rectangular waveguide, on the same side with respect to the center line Slots that are at the same length, width, and distance from the centerline and that are opposite to the centerline are length, width, or At least one of the distances from the center line is different.
- reflection at the feeding point can be improved and a wide-angle grating tube can be suppressed.
- FIG. 1 is a schematic configuration diagram schematically showing a waveguide slot array antenna device according to Embodiment 1 of the present invention
- FIG. 2 A diagram showing an example of numerical calculation of the frequency characteristics of return loss at the feed point (the solid line indicates this) The result of the invention, the broken line is the result of the conventional example),
- FIG. 3 is a perspective view showing a waveguide slot array antenna device according to Embodiment 2 of the present invention.
- FIG. 4 is a front view of FIG.
- FIG. 1 is a schematic configuration diagram schematically showing a waveguide slot array antenna device according to Embodiment 1 of the present invention.
- the rectangular waveguide 1 is formed in the X axis direction
- the rectangular slot 2 is formed in the direction perpendicular to the tube axial direction X of the waveguide 1 on the surface on which the rectangular slot 2 is formed.
- the normal direction of the surface to be used is the z direction.
- the waveguide slot array antenna apparatus shown in FIG. 1 is configured such that the rectangular slot 2 and the slot 3 are inclined by a predetermined angle ⁇ with respect to the tube axis of the rectangular waveguide 1, and the 1Z2 in-tube wavelength (gZ2, g Is a waveguide slot array antenna arranged at a position opposite to the center line along the tube axis direction of the wide surface of the rectangular waveguide 1 at intervals of Slot 2 has a length Ll, a width Wl, and a distance D1 from the center line of the wide waveguide surface.
- Slot 3 has a length of L2, a width of W2, and a distance from the center line of the wide waveguide surface of D2.
- At least one of the lengths L1 and L2, the widths W1 and W2, or the distances D1 and D2 of the center line force of the waveguide wide surface is different between the slot 2 and the slot 3. Further, the slots on the same side with respect to the center line of the waveguide 1 are the same. In other words, in FIG. 1, the slots on the left side (+ y direction side) of the center line force on the wide waveguide surface are all slots 2, and the slots on the right side (one y direction side) from the center line of the waveguide wide surface are All are slot 3.
- the effect of the present invention will be described. If the length or width of the slot or the distance of the center line force of the wide waveguide surface is changed, the degree of coupling between the magnetic field in the waveguide 1 and the slot can be changed. Therefore, the amplitude and phase of the reflected component from the slot in the waveguide 1 or the component radiated from the slot to the space change. Therefore, by adjusting the parameters of two adjacent slots 2 and 3, it is possible to select a combination that causes less reflection in the waveguide 1 and more radiation to the space. wear.
- the radiation pattern of a single slot is omnidirectional on the electric field surface (E surface), and shows a shape with less radiation in the wide-angle direction on the magnetic field surface (H surface).
- E surface electric field surface
- H surface magnetic field surface
- each of the slots 2 and 3 is arranged on the same side with respect to the center line of the waveguide 1 at intervals of one in-tube wavelength, so that each slot 2 or each slot The amplitude and phase of the radio wave radiated by the force between the three is the same. Therefore, if the excitation distribution in slot 2 and slot 3 is made uniform, a uniform excitation distribution can be obtained for the entire array antenna.
- FIG. 2 shows a numerical calculation example of the frequency characteristics of the return loss at the feeding point.
- the finite element method was used for the calculation.
- the solid line shown in FIG. 2 is the result of the present invention, and the broken line is the result of the conventional example. As shown in FIG. 2, it can be seen that the invention provides sufficiently low reflection characteristics.
- FIG. 3 is a perspective view showing a waveguide slot array antenna device according to Embodiment 2 of the present invention.
- FIG. 4 shows a front view of FIG. 3 and 4, metal tubes 4 having a predetermined cross-sectional area and depth are provided above the slots 2 and 3 so that the slots are not blocked.
- an array antenna it is known that as a means for suppressing a grating lobe generated in the wide-angle direction, it is effective to narrow the beam width of the array element pattern of each radiating element and sharpen the directivity. For that purpose, the radiation area of each radiation element should be increased.
- the gain and beam width of each element can be controlled.
- a metal plate cut out may be put on the waveguide 1, or may be cut integrally with the slots 2 and 3.
- the cross section of the metal tube 4 may be appropriately selected from a rectangular shape, a circular shape, an elliptical shape, and the like.
- the cross-sectional shape of the metal tube 4 may be gradually changed, such as a stepped shape or a tapered shape with respect to the z direction.
- the shape of the metal cylinder 4 is different between the slot 3 and the slot 4.
- the waveguide slot array antenna according to the present invention improves the reflection at the feeding point, suppresses the wide-angle grating lobe, and is useful as an on-vehicle radar.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/884,132 US20080266195A1 (en) | 2005-03-03 | 2005-03-03 | Waveguide Slot Array Antenna Assembly |
| JP2007505781A JPWO2006092862A1 (ja) | 2005-03-03 | 2005-03-03 | 導波管スロットアレーアンテナ装置 |
| PCT/JP2005/003603 WO2006092862A1 (ja) | 2005-03-03 | 2005-03-03 | 導波管スロットアレーアンテナ装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2005/003603 WO2006092862A1 (ja) | 2005-03-03 | 2005-03-03 | 導波管スロットアレーアンテナ装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006092862A1 true WO2006092862A1 (ja) | 2006-09-08 |
Family
ID=36940908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/003603 Ceased WO2006092862A1 (ja) | 2005-03-03 | 2005-03-03 | 導波管スロットアレーアンテナ装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20080266195A1 (ja) |
| JP (1) | JPWO2006092862A1 (ja) |
| WO (1) | WO2006092862A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009107216A1 (ja) * | 2008-02-28 | 2009-09-03 | 三菱電機株式会社 | 導波管スロットアレーアンテナ装置 |
| JP2012054869A (ja) * | 2010-09-03 | 2012-03-15 | Toshiba Corp | アンテナ装置及びレーダ装置 |
| CN103427164A (zh) * | 2011-08-22 | 2013-12-04 | 胜利微波股份有限公司 | 圆极化波导槽阵列 |
| CN119674512A (zh) * | 2024-12-27 | 2025-03-21 | 赛恩领动(上海)智能科技有限公司 | 一种45度极化波导缝隙天线 |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090072957A1 (en) * | 2007-09-14 | 2009-03-19 | Honeywell International Inc. | Radio frequency proximity sensor and sensor system |
| JP5486382B2 (ja) * | 2010-04-09 | 2014-05-07 | 古野電気株式会社 | 2次元スロットアレイアンテナ、給電用導波管、及びレーダ装置 |
| WO2014080298A1 (en) | 2012-11-22 | 2014-05-30 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | Circularly polarized slotted waveguide antenna |
| JP6165649B2 (ja) * | 2014-02-04 | 2017-07-19 | 株式会社東芝 | アンテナ装置およびレーダ装置 |
| US9851436B2 (en) * | 2015-01-05 | 2017-12-26 | Delphi Technologies, Inc. | Radar antenna assembly with panoramic detection |
| US11038263B2 (en) * | 2015-11-12 | 2021-06-15 | Duke University | Printed cavities for computational microwave imaging and methods of use |
| KR101740041B1 (ko) | 2015-12-31 | 2017-05-26 | 인천대학교 산학협력단 | 도파관과 캐비티 내 전기장과 자기장의 균일 분포 생성 영차 공진 장치 및 고지향성 누설파 도파관 안테나 |
| RU2652169C1 (ru) * | 2017-05-25 | 2018-04-25 | Самсунг Электроникс Ко., Лтд. | Антенный блок для телекоммуникационного устройства и телекоммуникационное устройство |
| US11424548B2 (en) * | 2018-05-01 | 2022-08-23 | Metawave Corporation | Method and apparatus for a meta-structure antenna array |
| WO2021050173A1 (en) * | 2019-09-10 | 2021-03-18 | Commscope Technologies Llc | Leaky waveguide antennas having spaced-apart radiating nodes with respective coupling ratios that support efficient radiation |
| CN118213763B (zh) * | 2024-03-18 | 2024-10-25 | 中国人民解放军国防科技大学 | 双频段高功率微波矩形波导裂隙天线 |
| CN119093009B (zh) * | 2024-11-08 | 2025-03-18 | 银河航天(西安)科技有限公司 | 相控阵天线栅瓣抑制装置及其使用方法 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994250A (ja) * | 1973-01-11 | 1974-09-06 | ||
| US4038742A (en) * | 1976-09-15 | 1977-08-02 | The United States Of America As Represented By The Secretary Of The Army | Method of making styrofoam slotted plane-array antenna |
| JPS5713163B2 (ja) * | 1976-06-02 | 1982-03-16 | ||
| JPH02162806A (ja) * | 1988-12-15 | 1990-06-22 | Matsushita Electric Works Ltd | 平面アンテナ |
| JPH0964637A (ja) * | 1995-08-28 | 1997-03-07 | Radial Antenna Kenkyusho:Kk | 導波管スロットアンテナ |
| JPH09270633A (ja) * | 1996-03-29 | 1997-10-14 | Hitachi Ltd | Temスロットアレイアンテナ |
| JPH10242745A (ja) * | 1997-02-27 | 1998-09-11 | Yuseisho Tsushin Sogo Kenkyusho | アンテナ装置 |
| JP3008891B2 (ja) * | 1997-05-08 | 2000-02-14 | 日本電気株式会社 | 成形ビームアレイアンテナ |
| JP2000151263A (ja) * | 1998-11-17 | 2000-05-30 | Toyota Central Res & Dev Lab Inc | 導波管分岐回路及びアンテナ装置 |
-
2005
- 2005-03-03 JP JP2007505781A patent/JPWO2006092862A1/ja not_active Abandoned
- 2005-03-03 WO PCT/JP2005/003603 patent/WO2006092862A1/ja not_active Ceased
- 2005-03-03 US US11/884,132 patent/US20080266195A1/en not_active Abandoned
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994250A (ja) * | 1973-01-11 | 1974-09-06 | ||
| JPS5713163B2 (ja) * | 1976-06-02 | 1982-03-16 | ||
| US4038742A (en) * | 1976-09-15 | 1977-08-02 | The United States Of America As Represented By The Secretary Of The Army | Method of making styrofoam slotted plane-array antenna |
| JPH02162806A (ja) * | 1988-12-15 | 1990-06-22 | Matsushita Electric Works Ltd | 平面アンテナ |
| JPH0964637A (ja) * | 1995-08-28 | 1997-03-07 | Radial Antenna Kenkyusho:Kk | 導波管スロットアンテナ |
| JPH09270633A (ja) * | 1996-03-29 | 1997-10-14 | Hitachi Ltd | Temスロットアレイアンテナ |
| JPH10242745A (ja) * | 1997-02-27 | 1998-09-11 | Yuseisho Tsushin Sogo Kenkyusho | アンテナ装置 |
| JP3008891B2 (ja) * | 1997-05-08 | 2000-02-14 | 日本電気株式会社 | 成形ビームアレイアンテナ |
| JP2000151263A (ja) * | 1998-11-17 | 2000-05-30 | Toyota Central Res & Dev Lab Inc | 導波管分岐回路及びアンテナ装置 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009107216A1 (ja) * | 2008-02-28 | 2009-09-03 | 三菱電機株式会社 | 導波管スロットアレーアンテナ装置 |
| CN101965664A (zh) * | 2008-02-28 | 2011-02-02 | 三菱电机株式会社 | 波导管缝隙阵列天线装置 |
| EP2249437A4 (en) * | 2008-02-28 | 2011-10-19 | Mitsubishi Electric Corp | WAVEGUIDE SLOT GROUP ANTENNA DEVICE |
| JP5153861B2 (ja) * | 2008-02-28 | 2013-02-27 | 三菱電機株式会社 | 導波管スロットアレーアンテナ装置 |
| US8599090B2 (en) | 2008-02-28 | 2013-12-03 | Mitsubishi Electric Corporation | Waveguide slot array antenna apparatus |
| JP2012054869A (ja) * | 2010-09-03 | 2012-03-15 | Toshiba Corp | アンテナ装置及びレーダ装置 |
| US8665142B2 (en) | 2010-09-03 | 2014-03-04 | Kabushiki Kaisha Toshiba | Antenna device and radar device |
| CN103427164A (zh) * | 2011-08-22 | 2013-12-04 | 胜利微波股份有限公司 | 圆极化波导槽阵列 |
| CN119674512A (zh) * | 2024-12-27 | 2025-03-21 | 赛恩领动(上海)智能科技有限公司 | 一种45度极化波导缝隙天线 |
| CN119674512B (zh) * | 2024-12-27 | 2025-10-17 | 赛恩领动(上海)智能科技有限公司 | 一种45度极化波导缝隙天线 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080266195A1 (en) | 2008-10-30 |
| JPWO2006092862A1 (ja) | 2008-08-07 |
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