ITRM20000645A0 - Sistemi d'antenna con fascio di larghezza variabile. - Google Patents

Sistemi d'antenna con fascio di larghezza variabile.

Info

Publication number
ITRM20000645A0
ITRM20000645A0 IT2000RM000645A ITRM20000645A ITRM20000645A0 IT RM20000645 A0 ITRM20000645 A0 IT RM20000645A0 IT 2000RM000645 A IT2000RM000645 A IT 2000RM000645A IT RM20000645 A ITRM20000645 A IT RM20000645A IT RM20000645 A0 ITRM20000645 A0 IT RM20000645A0
Authority
IT
Italy
Prior art keywords
beam width
antenna systems
variable beam
variable
antenna
Prior art date
Application number
IT2000RM000645A
Other languages
English (en)
Inventor
Howard H Luh
Original Assignee
Loral Space Systems Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Loral Space Systems Inc filed Critical Loral Space Systems Inc
Publication of ITRM20000645A0 publication Critical patent/ITRM20000645A0/it
Publication of ITRM20000645A1 publication Critical patent/ITRM20000645A1/it
Application granted granted Critical
Publication of IT1316256B1 publication Critical patent/IT1316256B1/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
IT2000RM000645A 2000-03-21 2000-12-06 Sistemi d'antenna con fascio di larghezza variabile. IT1316256B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/531,613 US6198455B1 (en) 2000-03-21 2000-03-21 Variable beamwidth antenna systems

Publications (3)

Publication Number Publication Date
ITRM20000645A0 true ITRM20000645A0 (it) 2000-12-06
ITRM20000645A1 ITRM20000645A1 (it) 2002-06-06
IT1316256B1 IT1316256B1 (it) 2003-04-03

Family

ID=24118354

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2000RM000645A IT1316256B1 (it) 2000-03-21 2000-12-06 Sistemi d'antenna con fascio di larghezza variabile.

Country Status (3)

Country Link
US (2) US6198455B1 (it)
FR (1) FR2806839A1 (it)
IT (1) IT1316256B1 (it)

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US7339520B2 (en) * 2000-02-04 2008-03-04 The Directv Group, Inc. Phased array terminal for equatorial satellite constellations
US6198455B1 (en) * 2000-03-21 2001-03-06 Space Systems/Loral, Inc. Variable beamwidth antenna systems
US6756937B1 (en) 2000-06-06 2004-06-29 The Directv Group, Inc. Stratospheric platforms based mobile communications architecture
US6388615B1 (en) 2000-06-06 2002-05-14 Hughes Electronics Corporation Micro cell architecture for mobile user tracking communication system
US6577282B1 (en) * 2000-07-19 2003-06-10 Hughes Electronics Corporation Method and apparatus for zooming and reconfiguring circular beams for satellite communications
US6895217B1 (en) 2000-08-21 2005-05-17 The Directv Group, Inc. Stratospheric-based communication system for mobile users having adaptive interference rejection
US7257418B1 (en) * 2000-08-31 2007-08-14 The Directv Group, Inc. Rapid user acquisition by a ground-based beamformer
US6941138B1 (en) 2000-09-05 2005-09-06 The Directv Group, Inc. Concurrent communications between a user terminal and multiple stratospheric transponder platforms
US6763242B1 (en) 2000-09-14 2004-07-13 The Directv Group, Inc. Resource assignment system and method for determining the same
US7369847B1 (en) 2000-09-14 2008-05-06 The Directv Group, Inc. Fixed cell communication system with reduced interference
US6388634B1 (en) 2000-10-31 2002-05-14 Hughes Electronics Corporation Multi-beam antenna communication system and method
US7400857B2 (en) 2000-12-12 2008-07-15 The Directv Group, Inc. Communication system using multiple link terminals
US6952580B2 (en) 2000-12-12 2005-10-04 The Directv Group, Inc. Multiple link internet protocol mobile communications system and method therefor
US7103317B2 (en) 2000-12-12 2006-09-05 The Directv Group, Inc. Communication system using multiple link terminals for aircraft
US6891813B2 (en) * 2000-12-12 2005-05-10 The Directv Group, Inc. Dynamic cell CDMA code assignment system and method
US7181162B2 (en) * 2000-12-12 2007-02-20 The Directv Group, Inc. Communication system using multiple link terminals
US7187949B2 (en) 2001-01-19 2007-03-06 The Directv Group, Inc. Multiple basestation communication system having adaptive antennas
US8396513B2 (en) 2001-01-19 2013-03-12 The Directv Group, Inc. Communication system for mobile users using adaptive antenna
US7809403B2 (en) * 2001-01-19 2010-10-05 The Directv Group, Inc. Stratospheric platforms communication system using adaptive antennas
US6441794B1 (en) * 2001-08-13 2002-08-27 Space Systems/Loral, Inc. Dual function subreflector for communication satellite antenna
US7038632B2 (en) * 2001-09-14 2006-05-02 Andrew Corporation Co-located multi-band antenna
US6697028B1 (en) * 2002-08-29 2004-02-24 Harris Corporation Multi-band ring focus dual reflector antenna system
US6963314B2 (en) * 2002-09-26 2005-11-08 Andrew Corporation Dynamically variable beamwidth and variable azimuth scanning antenna
US6809694B2 (en) * 2002-09-26 2004-10-26 Andrew Corporation Adjustable beamwidth and azimuth scanning antenna with dipole elements
US20040139477A1 (en) * 2003-01-15 2004-07-15 Russell David B. 60 GHz RF CATV repeater
US6943745B2 (en) * 2003-03-31 2005-09-13 The Boeing Company Beam reconfiguration method and apparatus for satellite antennas
US20060250316A1 (en) * 2005-05-06 2006-11-09 Space Systems/Loral, Inc. Selectable subreflector configurations for antenna beam reconfigurability
US7205949B2 (en) * 2005-05-31 2007-04-17 Harris Corporation Dual reflector antenna and associated methods
US7403172B2 (en) * 2006-04-18 2008-07-22 Intel Corporation Reconfigurable patch antenna apparatus, systems, and methods
CA2680849A1 (en) * 2007-03-16 2008-09-25 Mobile Sat Ltd. A vehicle mounted antenna and methods for transmitting and/or receiving signals
JP5483837B2 (ja) * 2008-07-01 2014-05-07 株式会社小糸製作所 車両用灯具
US20110032143A1 (en) * 2009-08-05 2011-02-10 Yulan Sun Fixed User Terminal for Inclined Orbit Satellite Operation
US8552917B2 (en) * 2010-04-28 2013-10-08 The Boeing Company Wide angle multibeams
US9184829B2 (en) 2010-05-02 2015-11-10 Viasat Inc. Flexible capacity satellite communications system
US10511379B2 (en) 2010-05-02 2019-12-17 Viasat, Inc. Flexible beamforming for satellite communications
RU2580461C2 (ru) * 2011-08-26 2016-04-10 Нек Корпорейшн Антенное устройство
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
SG11201907748VA (en) 2017-04-10 2019-09-27 Viasat Inc Coverage area adjustment to adapt satellite communications
FR3067535B1 (fr) * 2017-06-09 2023-03-03 Airbus Defence & Space Sas Satellite de telecommunications, procede de formation de faisceaux et procede de fabrication d’une charge utile de satellite
FR3073347B1 (fr) * 2017-11-08 2021-03-19 Airbus Defence & Space Sas Charge utile de satellite comportant un reflecteur a double surface reflechissante
GB201811459D0 (en) 2018-07-12 2018-08-29 Airbus Defence & Space Ltd Reconfigurable active array-fed reflector antenna
US12283750B2 (en) * 2018-11-08 2025-04-22 Orbit Communication Systems Ltd. Low profile multi band antenna system
CN112134001A (zh) * 2020-09-23 2020-12-25 航天科工微电子系统研究院有限公司 一种w波段方向图可重构的赋形面天线及系统
EP4068504A3 (en) * 2021-03-31 2022-12-21 Nokia Solutions and Networks Oy Antenna apparatus and method

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US4355314A (en) * 1980-11-28 1982-10-19 Bell Telephone Laboratories, Incorporated Wide-field-of-view antenna arrangement
JPS57178402A (en) * 1981-04-27 1982-11-02 Kokusai Denshin Denwa Co Ltd <Kdd> Multireflex mirror antenna
JPS59143405A (ja) * 1983-02-04 1984-08-17 Kokusai Denshin Denwa Co Ltd <Kdd> マルチビ−ムアンテナ
US4866457A (en) * 1988-11-08 1989-09-12 The United States Of America As Represented By The Secretary Of Commerce Covered inverted offset cassegrainian system
US6043788A (en) * 1998-07-31 2000-03-28 Seavey; John M. Low earth orbit earth station antenna
US6266024B1 (en) * 1998-12-23 2001-07-24 Hughes Electronics Corporation Rotatable and scannable reconfigurable shaped reflector with a movable feed system
US6198455B1 (en) * 2000-03-21 2001-03-06 Space Systems/Loral, Inc. Variable beamwidth antenna systems

Also Published As

Publication number Publication date
ITRM20000645A1 (it) 2002-06-06
FR2806839A1 (fr) 2001-09-28
US20020011962A1 (en) 2002-01-31
US6414646B2 (en) 2002-07-02
US6198455B1 (en) 2001-03-06
IT1316256B1 (it) 2003-04-03

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