IT1275349B - Antenna con fascio ellittico ruotabile con possibilita' di riconfigurazione e zoom del fascio - Google Patents
Antenna con fascio ellittico ruotabile con possibilita' di riconfigurazione e zoom del fascioInfo
- Publication number
- IT1275349B IT1275349B ITRM940777A ITRM940777A IT1275349B IT 1275349 B IT1275349 B IT 1275349B IT RM940777 A ITRM940777 A IT RM940777A IT RM940777 A ITRM940777 A IT RM940777A IT 1275349 B IT1275349 B IT 1275349B
- Authority
- IT
- Italy
- Prior art keywords
- reflector
- axes
- reconfiguration
- antenna
- microwave
- Prior art date
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
Antenna e microonde a doppio riflettore offset (fig. 1) classificabile nella famiglia delle ottiche di tipo Gregoriano in grado di realizzare un fascio ellittico con asse maggiore orientato in qualsivoglia direzione dello spazio (fig. 2) mediante una semplice rotazione del sub-riflettore 2 sttorno all'asse 4 di fig. 1. Aggiungendo un'ulteriore movimentazione alla geometria suddetta (traslazione indipendente dello stesso sub-riflettore 2 e/o del riflettore principale 3 lungo gli assi 5 e/o 6) è possibile ottenere una notevole riconfigurabilità nella forma del fascio. In particolare è possibile variare il rapporto tra gli assi del fascio ellittico con una qualunque orientazione degli stessi, allargare gli assi dell'ellisse, oppure ottenere un fascio circolare (fig. 3a, 3b).Tali caratteristiche ne consentono l'impiego come antenne di bordo per satelliti con riuso di polarizzazione in una ambiente operativo con uno o più fasci simultaneamente attivi.L'invenzione può essere classificata come appartenente al campo tecnico delle antenne a microonde ed al campo applicativo delle antenne riconfigurabili da impiegare a bordo di satelliti artificiali o stazioni spaziali oppure in sistemi radar terrestri.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITRM940777A IT1275349B (it) | 1994-11-25 | 1994-11-25 | Antenna con fascio ellittico ruotabile con possibilita' di riconfigurazione e zoom del fascio |
| ES95919437T ES2204951T3 (es) | 1994-11-25 | 1995-05-10 | Antena de haz eliptico reconfigurable, con funcion de zoom y giratoria. |
| AU25266/95A AU2526695A (en) | 1994-11-25 | 1995-05-10 | Reconfigurable, zoomable, turnable, elliptical-beam antenna |
| JP51809896A 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 |
| EP95919437A EP0741917B1 (en) | 1994-11-25 | 1995-05-10 | Reconfigurable, zoomable, turnable, elliptical-beam antenna |
| DE69531604T DE69531604T2 (de) | 1994-11-25 | 1995-05-10 | Wiederkonfigurierbare, zoombare, drehbare ellipsoid-strahlantenne |
| DK95919437T DK0741917T3 (da) | 1994-11-25 | 1995-05-10 | Rekonfigurabel, zoom-indstillelig, drejelig elliptisk stråleantenne |
| PCT/EP1995/001771 WO1996017403A1 (en) | 1994-11-25 | 1995-05-10 | Reconfigurable, zoomable, turnable, elliptical-beam antenna |
| FI962951A FI962951A (fi) | 1994-11-25 | 1996-07-24 | Elliptisen keilan antenni, joka on uudelleen konfiguroitavissa, zoomattavissa ja käännettävissä |
| US08/905,379 US5977923A (en) | 1994-11-25 | 1997-08-04 | Reconfigurable, zoomable, turnable, elliptical-beam antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITRM940777A IT1275349B (it) | 1994-11-25 | 1994-11-25 | Antenna con fascio ellittico ruotabile con possibilita' di riconfigurazione e zoom del fascio |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITRM940777A0 ITRM940777A0 (it) | 1994-11-25 |
| ITRM940777A1 ITRM940777A1 (it) | 1996-05-25 |
| IT1275349B true IT1275349B (it) | 1997-08-05 |
Family
ID=11402840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ITRM940777A IT1275349B (it) | 1994-11-25 | 1994-11-25 | Antenna con fascio ellittico ruotabile con possibilita' di riconfigurazione e zoom del fascio |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5977923A (it) |
| EP (1) | EP0741917B1 (it) |
| JP (1) | JP3188474B2 (it) |
| AU (1) | AU2526695A (it) |
| DE (1) | DE69531604T2 (it) |
| DK (1) | DK0741917T3 (it) |
| ES (1) | ES2204951T3 (it) |
| FI (1) | FI962951A (it) |
| IT (1) | IT1275349B (it) |
| WO (1) | WO1996017403A1 (it) |
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 |
| US9312606B2 (en) * | 2011-08-26 | 2016-04-12 | Nec Corporation | Antenna device including reflector and primary radiator |
| 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 DK DK95919437T patent/DK0741917T3/da active
- 1995-05-10 ES ES95919437T patent/ES2204951T3/es not_active Expired - Lifetime
- 1995-05-10 AU AU25266/95A patent/AU2526695A/en not_active Abandoned
- 1995-05-10 WO PCT/EP1995/001771 patent/WO1996017403A1/en active IP Right Grant
- 1995-05-10 DE DE69531604T patent/DE69531604T2/de not_active Expired - Lifetime
- 1995-05-10 EP EP95919437A patent/EP0741917B1/en not_active Expired - Lifetime
- 1995-05-10 JP JP51809896A patent/JP3188474B2/ja 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 |
|---|---|
| DE69531604D1 (de) | 2003-10-02 |
| EP0741917B1 (en) | 2003-08-27 |
| ES2204951T3 (es) | 2004-05-01 |
| FI962951A0 (fi) | 1996-07-24 |
| ITRM940777A0 (it) | 1994-11-25 |
| ITRM940777A1 (it) | 1996-05-25 |
| JPH09504158A (ja) | 1997-04-22 |
| US5977923A (en) | 1999-11-02 |
| FI962951A (fi) | 1996-09-19 |
| EP0741917A1 (en) | 1996-11-13 |
| WO1996017403A1 (en) | 1996-06-06 |
| AU2526695A (en) | 1996-06-19 |
| DK0741917T3 (da) | 2003-12-01 |
| DE69531604T2 (de) | 2004-06-24 |
| JP3188474B2 (ja) | 2001-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970117 |