JPH09504158A - 再構成可能、ズーム可能、旋回可能な、楕円ビームアンテナ - Google Patents
再構成可能、ズーム可能、旋回可能な、楕円ビームアンテナInfo
- Publication number
- JPH09504158A JPH09504158A JP8518098A JP51809896A JPH09504158A JP H09504158 A JPH09504158 A JP H09504158A JP 8518098 A JP8518098 A JP 8518098A JP 51809896 A JP51809896 A JP 51809896A JP H09504158 A JPH09504158 A JP H09504158A
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- sub
- axis
- antenna
- elliptical
- 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.)
- Granted
Links
Classifications
-
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
- H01Q19/192—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface with dual offset reflectors
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.図1に示される、グレゴリー式でダブルリフレクタのマイクロ波アンテナで あって、前記アンテナは、不可欠な部分として、フィード(1)と、適切な軸( 4)に関して2つの対称的な面を有する成形された表面を備えるサブリフレクタ (2)と、メインリフレクタ(3)とを含み、サブリフレクタ(2)を軸(4) のまわりで回転させることにより、電界の配向(偏波)を不変のままに保つ一方 でビーム自体の形状をも不変のままに保つことで前記アンテナの楕円状ビームを 回転させることが可能であり、それらすべてがもたらす直交偏波値は極めて低い ということを特徴とする、グレゴリー式でダブルリフレクタのマイクロ波アンテ ナ。 2.前記アンテナはクレーム1に記載のビームの回転にさらに加えて、軸(6) に沿ってのメインリフレクタ(3)の移行および/または軸(5)に沿ってのサ ブリフレクタ(2)の移行など他の自由度をも提供し、それによりアンテナビー ムにおける高度な再構成性が得られることを特徴とし、特により広い楕円状ビー ムを得ること、あるいは楕円状ビームの長軸および短軸の比率を、そのような軸 におけるどのような要求される配向ででも変えること、または円形ビームを得る ことさえも可能であることを特徴とする、請求項1に記載の図1に示されるグレ ゴリー式でダブルリフレクタのマイクロ波アンテナ。 3.軸(5)に沿ってのサブリフレクタ(2)の移行および/または軸(6)に 沿ってのメインリフレクタ(3)の移行により、適切に成形されたサブリフレク タを活用することで円形ビームを拡張することが可能となることを特徴とする、 請求項2に記載の図1に示されたグレゴリー式でダブルリフレクタのマイクロ波 アンテナ。 4.メインリフレクタ(3)は図1でのように単一であってもよいし、図28で のように偏波選択性である2つのメインリフレクタ(3および3′)として二重 にされていてもよく、後者の場合ではサブリフレクタ(2)は2つの別個のサブ リフレクタ(2および2′)に二重化され、前記2つのサブリフレクタの各々は それ自体のフィード(1および1′)と結合され、この構成により楕円状ビーム のいかなる配向についてもグリッドを与えられたリフレクタに典型的なサービス のカバー範囲における偏波の純度レベルが提供されることを特徴とする、クレー ム1に記載の図1に示したグレゴリー式でダブルリフレクタのマイクロ波アンテ ナ。 5.図29に示した古典的なグレゴリー式でダブルリフレクタのマイクロ波アン テナであって、前記アンテナは不可欠な部分として、フィード(1)と、成形さ れたまたは楕円状の表面を備えるサブリフレクタ(2)と、メインリフレクタ( 3)とを含み、前記アンテナは軸(5)に沿ってのサブリフレクタ(2)の移行 および/または軸(6)に 沿ってのメインリフレクタ(3)の移行を通じて円形または楕円状ビームの拡張 をもたらし、かつ楕円状ビームの円形ビームへの再構成をももたらすことを特徴 とする、古典的なグレゴリー式でダブルリフレクタのマイクロ波アンテナ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT94A000777 | 1994-11-25 | ||
ITRM940777A IT1275349B (it) | 1994-11-25 | 1994-11-25 | Antenna con fascio ellittico ruotabile con possibilita' di riconfigurazione e zoom del fascio |
PCT/EP1995/001771 WO1996017403A1 (en) | 1994-11-25 | 1995-05-10 | Reconfigurable, zoomable, turnable, elliptical-beam antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09504158A true JPH09504158A (ja) | 1997-04-22 |
JP3188474B2 JP3188474B2 (ja) | 2001-07-16 |
Family
ID=11402840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51809896A Expired - Lifetime JP3188474B2 (ja) | 1994-11-25 | 1995-05-10 | 再構成可能、ズーム可能、旋回可能な、楕円ビームアンテナ |
Country Status (10)
Country | Link |
---|---|
US (1) | US5977923A (ja) |
EP (1) | EP0741917B1 (ja) |
JP (1) | JP3188474B2 (ja) |
AU (1) | AU2526695A (ja) |
DE (1) | DE69531604T2 (ja) |
DK (1) | DK0741917T3 (ja) |
ES (1) | ES2204951T3 (ja) |
FI (1) | FI962951A (ja) |
IT (1) | IT1275349B (ja) |
WO (1) | WO1996017403A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6243048B1 (en) * | 2000-02-04 | 2001-06-05 | Space Systems/Loral, Inc. | Gregorian reflector antenna system having a subreflector optimized for an elliptical antenna aperture |
US6603437B2 (en) * | 2001-02-13 | 2003-08-05 | Raytheon Company | High efficiency low sidelobe dual reflector antenna |
US6441794B1 (en) * | 2001-08-13 | 2002-08-27 | Space Systems/Loral, Inc. | Dual function subreflector for communication satellite antenna |
US6628238B2 (en) * | 2001-11-19 | 2003-09-30 | Parthasarathy Ramanujam | Sub-reflector for dual-reflector antenna system |
WO2007064092A1 (en) * | 2005-11-29 | 2007-06-07 | Jiho Ahn | Antenna-feeder device and antenna |
DE102008013066B3 (de) * | 2008-03-06 | 2009-10-01 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Vorrichtung zur zweidimensionalen Abbildung von Szenen durch Mikrowellen-Abtastung und Verwendung der Vorrichtung |
US9379438B1 (en) * | 2009-12-01 | 2016-06-28 | Viasat, Inc. | Fragmented aperture for the Ka/K/Ku frequency bands |
WO2013031396A1 (ja) * | 2011-08-26 | 2013-03-07 | 日本電気株式会社 | アンテナ装置 |
US10122085B2 (en) * | 2014-12-15 | 2018-11-06 | The Boeing Company | Feed re-pointing technique for multiple shaped beams reflector antennas |
US11146328B2 (en) | 2015-04-03 | 2021-10-12 | Qualcomm Incorporated | Method and apparatus for avoiding exceeding interference limits for a non-geostationary satellite system |
US9590299B2 (en) | 2015-06-15 | 2017-03-07 | Northrop Grumman Systems Corporation | Integrated antenna and RF payload for low-cost inter-satellite links using super-elliptical antenna aperture with single axis gimbal |
US9583840B1 (en) | 2015-07-02 | 2017-02-28 | The United States Of America As Represented By The Secretary Of The Air Force | Microwave zoom antenna using metal plate lenses |
CN112147588B (zh) * | 2020-10-14 | 2022-03-01 | 中国电波传播研究所(中国电子科技集团公司第二十二研究所) | 一种不对称的雷达照射面积快速计算方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4425566A (en) * | 1981-08-31 | 1984-01-10 | Bell Telephone Laboratories, Incorporated | Antenna arrangement for providing a frequency independent field distribution with a small feedhorn |
US4755826A (en) * | 1983-01-10 | 1988-07-05 | The United States Of America As Represented By The Secretary Of The Navy | Bicollimated offset Gregorian dual reflector antenna system |
JPS60178709A (ja) * | 1984-02-24 | 1985-09-12 | Nippon Telegr & Teleph Corp <Ntt> | オフセツト複反射鏡アンテナ |
ES2028922T3 (es) * | 1987-03-18 | 1992-07-16 | Siemens Aktiengesellschaft | Dispositivo de antena direccional de microondas de dos espejos. |
-
1994
- 1994-11-25 IT ITRM940777A patent/IT1275349B/it active IP Right Grant
-
1995
- 1995-05-10 JP JP51809896A patent/JP3188474B2/ja not_active Expired - Lifetime
- 1995-05-10 AU AU25266/95A patent/AU2526695A/en not_active Abandoned
- 1995-05-10 ES ES95919437T patent/ES2204951T3/es not_active Expired - Lifetime
- 1995-05-10 WO PCT/EP1995/001771 patent/WO1996017403A1/en active IP Right Grant
- 1995-05-10 DK DK95919437T patent/DK0741917T3/da active
- 1995-05-10 DE DE69531604T patent/DE69531604T2/de not_active Expired - Lifetime
- 1995-05-10 EP EP95919437A patent/EP0741917B1/en not_active Expired - Lifetime
-
1996
- 1996-07-24 FI FI962951A patent/FI962951A/fi not_active Application Discontinuation
-
1997
- 1997-08-04 US US08/905,379 patent/US5977923A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69531604T2 (de) | 2004-06-24 |
WO1996017403A1 (en) | 1996-06-06 |
AU2526695A (en) | 1996-06-19 |
FI962951A0 (fi) | 1996-07-24 |
DE69531604D1 (de) | 2003-10-02 |
ITRM940777A1 (it) | 1996-05-25 |
ITRM940777A0 (it) | 1994-11-25 |
DK0741917T3 (da) | 2003-12-01 |
ES2204951T3 (es) | 2004-05-01 |
FI962951A (fi) | 1996-09-19 |
IT1275349B (it) | 1997-08-05 |
US5977923A (en) | 1999-11-02 |
EP0741917A1 (en) | 1996-11-13 |
EP0741917B1 (en) | 2003-08-27 |
JP3188474B2 (ja) | 2001-07-16 |
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