JP6751141B2 - 反射鏡アンテナ用のフェーズドアレイ線状給電器 - Google Patents
反射鏡アンテナ用のフェーズドアレイ線状給電器 Download PDFInfo
- Publication number
- JP6751141B2 JP6751141B2 JP2018521487A JP2018521487A JP6751141B2 JP 6751141 B2 JP6751141 B2 JP 6751141B2 JP 2018521487 A JP2018521487 A JP 2018521487A JP 2018521487 A JP2018521487 A JP 2018521487A JP 6751141 B2 JP6751141 B2 JP 6751141B2
- Authority
- JP
- Japan
- Prior art keywords
- linear feeder
- metal
- reflector antenna
- base
- linear
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 claims description 78
- 239000011159 matrix material Substances 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 10
- 238000003491 array Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 11
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
- H01Q3/245—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching in the focal plane of a focussing device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
-
- 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
- H01Q19/12—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 wherein the surfaces are concave
-
- 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
- H01Q19/12—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 wherein the surfaces are concave
- H01Q19/17—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 wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
- H01Q19/175—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 wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- 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
-
- 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
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
-
- 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
- H01Q21/22—Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/28—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the amplitude
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
-
- 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
- H01Q19/12—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 wherein the surfaces are concave
- H01Q19/15—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 wherein the surfaces are concave the primary radiating source being a line source, e.g. leaky waveguide antennas
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Support Of Aerials (AREA)
Description
本願は、2015年7月16日に出願された米国仮特許出願第62/193,474号の優先権を主張し、その全体を参照により本願に援用する。本願は、2016年5月13日に出願された米国特許出願第15/154,760号にも関連し、その全体を参照により本願に援用する。
該当せず。
fa(θ,φ)=結果として生じる放射パターン
f0(θ,φ)=各アレイ素子の共通放射パターン
Vn=Anejαn=各素子に対する複素励振
An=各素子の信号振幅
αn=各素子の位相
dn=アレイの中心に対する素子の間隔
k=2π/λ=伝搬定数
θ=極角
φ=方位角
λ=動作波長
n=素子番号(1、2、3など)。
120 バルーン反射鏡アンテナ
140 球面バルーン
142 透過面
144 反射面
146 誘電体支持カーテン
160 給電システム
162 電動マウント
182 バルーン反射鏡キャニスタ
184 RFモジュール
186 通信モジュール
188 ピッチ・リアクションホイール
189 ロール・リアクションホイール
190 パワーモジュール
192 太陽電池
200 線状給電器
220 円形導波管
260 外部1/4波長板
300 フェーズドアレイ線状給電器
310a〜310n 金属ディスク
320a〜320c 金属ロッド
322 同軸フィードスルー
340 位相/電力スイッチングマトリックス
342 同軸コネクタ
400 フェーズドアレイ線状給電器
Claims (22)
- 反射鏡アンテナ用のフェーズドアレイ線状給電器であって、
複数のほぼ平行な金属ディスクと、
複数のほぼ平行な金属ロッドであって、前記複数の金属ロッドの各々が、前記線状給電器の基部から、前記金属ディスクに対してほぼ垂直に前記金属ディスクを貫いて、前記線状給電器の頂点まで延びる、前記複数の金属ロッドと、
前記線状給電器の前記基部のところで前記金属ロッドに電気的に接続された位相/電力スイッチングマトリックスとを備え、
前記複数の金属ディスクは、前記フェーズドアレイ線状給電器を、一連の独立した垂直アンテナのサブアレイに分割する、
線状給電器。 - 前記位相/電力スイッチングマトリックスが、前記金属ロッド間の位相差を調整することによって、前記反射鏡アンテナのビームをステアリングする、請求項1に記載の線状給電器。
- 前記位相/電力スイッチングマトリックスが、前記金属ロッド間の電力差を調整することによって、前記反射鏡アンテナのビームをステアリングする、請求項1に記載の線状給電器。
- 前記金属ディスクが、前記反射鏡アンテナの対象波長の約1/2の間隔で隔置されている、請求項1に記載の線状給電器。
- 前記金属ディスク間の間隔が、前記線状給電器の前記基部から、前記線状給電器の前記頂点まで減少する、請求項1に記載の線状給電器。
- 前記金属ディスクの直径が、前記線状給電器の前記基部における最大値から、前記線状給電器の前記頂点における最小値まで減少する、請求項1に記載の線状給電器。
- 前記金属ロッドが、前記線状給電器の前記基部において、前記反射鏡アンテナの対象波長の約1/3.5の間隔で隔置されている、請求項1に記載の線状給電器。
- 前記金属ロッド間の間隔が、前記線状給電器の前記基部から、前記線状給電器の前記頂点まで減少する、請求項1に記載の線状給電器。
- 前記反射鏡アンテナが球面反射鏡アンテナである、請求項1に記載の線状給電器。
- 前記線状給電器が、前記反射鏡アンテナの直径の約12パーセントの長さを有する、請求項9に記載の線状給電器。
- 前記反射鏡アンテナがバルーン反射鏡アンテナである、請求項1に記載の線状給電器。
- 一対象波長を有する反射鏡アンテナ用のフェーズドアレイ線状給電器を作成する方法であって、
複数のほぼ平行な金属ディスクを設けること、
複数のほぼ平行な金属ロッドであって、前記複数の金属ロッドの各々が、前記線状給電器の基部から、前記金属ディスクに対してほぼ垂直に前記金属ディスクを貫いて、前記線状給電器の頂点まで延びる、前記複数の金属ロッドを設けること、及び
前記線状給電器の前記基部のところで前記金属ロッドに電気的に接続された位相/電力スイッチングマトリックスを設けること、を含み、
前記複数の金属ディスクは、前記フェーズドアレイ線状給電器を、一連の独立した垂直アンテナのサブアレイに分割する、
方法。 - 前記位相/電力スイッチングマトリックスが、前記金属ロッド間の位相差を調整することによって、前記反射鏡アンテナのビームをステアリングする、請求項12に記載の方法。
- 前記位相/電力スイッチングマトリックスが、前記金属ロッド間の電力差を調整することによって、前記反射鏡アンテナのビームをステアリングする、請求項12に記載の方法。
- 前記金属ディスクが、前記対象波長の約1/2の間隔で隔置されている、請求項12に記載の方法。
- 前記金属ディスク間の間隔が、前記線状給電器の前記基部から、前記線状給電器の前記頂点まで減少する、請求項12に記載の方法。
- 前記金属ディスクの直径が、前記線状給電器の前記基部における最大値から、前記線状給電器の前記頂点における最小値まで減少する、請求項12に記載の方法。
- 前記金属ロッドが、前記線状給電器の前記基部において、前記対象波長の約1/3.5の間隔で隔置されている、請求項12に記載の方法。
- 前記金属ロッド間の間隔が、前記線状給電器の前記基部から、前記線状給電器の前記頂点まで減少する、請求項12に記載の方法。
- 前記反射鏡アンテナが球面反射鏡アンテナである、請求項12に記載の方法。
- 前記線状給電器が、前記反射鏡アンテナの直径の約12パーセントの長さを有する、請求項20に記載の方法。
- 前記反射鏡アンテナがバルーン反射鏡アンテナである、請求項12に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562193474P | 2015-07-16 | 2015-07-16 | |
US62/193,474 | 2015-07-16 | ||
PCT/US2016/042462 WO2017011732A1 (en) | 2015-07-16 | 2016-07-15 | Phased array line feed for reflector antenna |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2018521609A JP2018521609A (ja) | 2018-08-02 |
JP2018521609A5 JP2018521609A5 (ja) | 2019-08-22 |
JP6751141B2 true JP6751141B2 (ja) | 2020-09-02 |
Family
ID=57757706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018521487A Active JP6751141B2 (ja) | 2015-07-16 | 2016-07-15 | 反射鏡アンテナ用のフェーズドアレイ線状給電器 |
Country Status (8)
Country | Link |
---|---|
US (2) | US10978808B2 (ja) |
EP (1) | EP3322999A4 (ja) |
JP (1) | JP6751141B2 (ja) |
KR (1) | KR20180052604A (ja) |
CN (1) | CN108139464A (ja) |
CA (1) | CA2992741A1 (ja) |
IL (1) | IL256896A (ja) |
WO (1) | WO2017011732A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11888234B2 (en) | 2019-07-18 | 2024-01-30 | Freefall Aerospace, Inc. | Zig-zag antenna array and system for polarization control |
CN110673133B (zh) * | 2019-10-14 | 2020-09-04 | 航天科工微电子系统研究院有限公司 | 一种基于搜跟共轴的高精度目指雷达系统 |
WO2023069468A1 (en) * | 2021-10-18 | 2023-04-27 | Canyon Consulting, LLC | Steerable antenna system and method |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3983562A (en) * | 1975-03-28 | 1976-09-28 | The Bendix Corporation | Mono-lobed scanner |
US4427984A (en) * | 1981-07-29 | 1984-01-24 | General Electric Company | Phase-variable spiral antenna and steerable arrays thereof |
US4819003A (en) | 1984-03-24 | 1989-04-04 | Naohisa Goto | Flat circular unidirectional microwave antenna |
FR2652452B1 (fr) * | 1989-09-26 | 1992-03-20 | Europ Agence Spatiale | Dispositif d'alimentation d'une antenne a faisceaux multiples. |
JPH075083U (ja) * | 1992-02-20 | 1995-01-24 | 株式会社光電製作所 | 受波ビーム旋回装置 |
FR2760900B1 (fr) * | 1997-03-17 | 1999-05-28 | Centre Nat Etd Spatiales | Antenne pour satellite a defilement |
US6664938B2 (en) | 2002-03-01 | 2003-12-16 | Ems Technologies Canada, Ltd. | Pentagonal helical antenna array |
US6963315B2 (en) * | 2003-05-05 | 2005-11-08 | Srs Technologies, Inc. | Inflatable antenna |
US7133001B2 (en) * | 2003-11-03 | 2006-11-07 | Toyon Research Corporation | Inflatable-collapsible transreflector antenna |
US7438261B2 (en) * | 2004-09-09 | 2008-10-21 | David R. Porter | Stratospheric balloon utilizing electrostatic inflation of walls |
US7358912B1 (en) | 2005-06-24 | 2008-04-15 | Ruckus Wireless, Inc. | Coverage antenna apparatus with selectable horizontal and vertical polarization elements |
US7224322B1 (en) * | 2005-06-30 | 2007-05-29 | The United States Of America As Represented By The Secretary Of The Navy | Balloon antenna |
US8354956B2 (en) * | 2006-01-13 | 2013-01-15 | Lockheed Martin Corporation | Space segment payload architecture for mobile satellite services (MSS) systems |
US7612731B2 (en) * | 2006-03-31 | 2009-11-03 | Raytheon Company | Methods and apparatus for reducing radio frequency interference for collocated antennas |
US7605767B2 (en) * | 2006-08-04 | 2009-10-20 | Raytheon Company | Space-fed array operable in a reflective mode and in a feed-through mode |
US7498989B1 (en) * | 2007-04-26 | 2009-03-03 | Lockheed Martin Corporation | Stacked-disk antenna element with wings, and array thereof |
US7495627B2 (en) * | 2007-06-14 | 2009-02-24 | Harris Corporation | Broadband planar dipole antenna structure and associated methods |
US8451185B2 (en) * | 2008-02-21 | 2013-05-28 | Antennasys, Inc. | Multi-feed dipole antenna and method |
WO2010101468A1 (en) * | 2009-03-02 | 2010-09-10 | Hans Gude Gudesen | Multi-element device |
US8872719B2 (en) | 2009-11-09 | 2014-10-28 | Linear Signal, Inc. | Apparatus, system, and method for integrated modular phased array tile configuration |
US8547275B2 (en) * | 2010-11-29 | 2013-10-01 | Src, Inc. | Active electronically scanned array antenna for hemispherical scan coverage |
CN103022699B (zh) * | 2012-12-27 | 2015-02-11 | 北京理工大学 | 星载反射面稀疏相控阵多波束天线 |
CN104282995A (zh) * | 2014-05-29 | 2015-01-14 | 云南大学 | 一种基于抛物面反射器和圆环形阵列馈源的oam发生器 |
-
2016
- 2016-07-15 US US15/744,625 patent/US10978808B2/en active Active
- 2016-07-15 JP JP2018521487A patent/JP6751141B2/ja active Active
- 2016-07-15 CA CA2992741A patent/CA2992741A1/en not_active Abandoned
- 2016-07-15 KR KR1020187003857A patent/KR20180052604A/ko not_active Application Discontinuation
- 2016-07-15 CN CN201680053671.1A patent/CN108139464A/zh active Pending
- 2016-07-15 EP EP16825239.3A patent/EP3322999A4/en not_active Withdrawn
- 2016-07-15 WO PCT/US2016/042462 patent/WO2017011732A1/en active Application Filing
-
2018
- 2018-01-14 IL IL256896A patent/IL256896A/en unknown
-
2021
- 2021-04-07 US US17/224,217 patent/US20210226337A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
KR20180052604A (ko) | 2018-05-18 |
CA2992741A1 (en) | 2017-01-19 |
EP3322999A4 (en) | 2019-03-20 |
US10978808B2 (en) | 2021-04-13 |
IL256896A (en) | 2018-03-29 |
CN108139464A (zh) | 2018-06-08 |
EP3322999A1 (en) | 2018-05-23 |
JP2018521609A (ja) | 2018-08-02 |
WO2017011732A1 (en) | 2017-01-19 |
US20180212334A1 (en) | 2018-07-26 |
US20210226337A1 (en) | 2021-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10256551B2 (en) | High gain, multi-beam antenna for 5G wireless communications | |
US20210226337A1 (en) | Phased array line feed for a reflector antenna | |
US8854257B2 (en) | Conformal array, luneburg lens antenna system | |
US4090203A (en) | Low sidelobe antenna system employing plural spaced feeds with amplitude control | |
US9653816B2 (en) | Antenna system | |
US11264729B2 (en) | Wide scan phased array fed reflector systems | |
KR102005101B1 (ko) | 능동형 위상 배열 피드를 사용하는 폴디드 리플렉트어레이 안테나 | |
US5274390A (en) | Frequency-Independent phased-array antenna | |
US10938117B2 (en) | Cross-link satellite with spherical reflectors | |
US6690333B2 (en) | Cylindrical ray imaging steered beam array (CRISBA) antenna | |
GB2611943A (en) | Multisegment array-fed ring-focus reflector antenna for wide-angle scanning | |
WO2018096307A1 (en) | A frequency scanned array antenna | |
US2935746A (en) | Spiral trough antennas | |
US2969542A (en) | Spiral antenna system with trough reflector | |
US10461432B1 (en) | Collapsible feed structures for reflector antennas | |
EP2849285B1 (en) | Ultra-broadband antenna array with constant beamwidth throughout operating frequency band | |
US7450079B1 (en) | Gimbaled gregorian antenna | |
AU2020406407B2 (en) | Multibeam antenna | |
US6388637B1 (en) | Wide band, wide scan antenna for space borne applications | |
US8159410B2 (en) | Reflective antenna assembly | |
US6507313B1 (en) | Reflector radar antenna using flanking-beam array switching technique | |
US10673137B1 (en) | Multibeam antenna that spans the 360 degrees space in azimuth | |
Gandini et al. | Near-field imaging system fed by lens antenna focal plane array at sub-millimeter frequency | |
Buendía et al. | 2-D planar leaky-wave antenna with fixed frequency beam steering through broadside | |
RU2294037C2 (ru) | Способ построения зеркальных антенн и устройство зеркальная антенна |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190710 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190710 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200715 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200721 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200813 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6751141 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |