Multiple-beam antenna employing dielectric filled feeds for multiple and closely spaced satellites
First Claim
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1. A method of receiving and transmitting electromagnetic signals from a plurality of satellites via a single antenna, the method comprising:
- generating a plurality of radiation patterns using a corresponding plurality of feedhorns of the antenna, wherein each of the feedhorns is coupled to a dielectric insert that alters the corresponding radiation pattern according to a dielectric constant of the dielectric insert to permit simultaneous transmission and reception of the signals; and
producing a plurality of antenna beams based upon the generated radiation patterns via a reflector of the antenna to communicate with the plurality of satellites, wherein the plurality of satellites are spaced 2.0°
or less apart.
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Abstract
An approach for providing a multiple-beam antenna system for receiving and transmitting electromagnetic signals from a plurality of closely spaced satellites is disclosed. Dielectric inserts are selectively coupled to the feedhorn bodies to alter the radiation patterns according to dielectric constants of the dielectric inserts. A reflector produces multiple antenna beams based upon the altered radiation patterns of the feedhorn bodies. The antenna provides simultaneous transmissions to satellites that are spaced about 2° or less.
203 Citations
19 Claims
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1. A method of receiving and transmitting electromagnetic signals from a plurality of satellites via a single antenna, the method comprising:
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generating a plurality of radiation patterns using a corresponding plurality of feedhorns of the antenna, wherein each of the feedhorns is coupled to a dielectric insert that alters the corresponding radiation pattern according to a dielectric constant of the dielectric insert to permit simultaneous transmission and reception of the signals; and
producing a plurality of antenna beams based upon the generated radiation patterns via a reflector of the antenna to communicate with the plurality of satellites, wherein the plurality of satellites are spaced 2.0°
or less apart.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multiple-beam antenna system for receiving and transmitting electromagnetic signals from a plurality of satellites, comprising:
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a plurality of feedhorns having respective radiation patterns, each of the plurality of feedhorns an aperture and a body;
a plurality of dielectric inserts selectively coupled to the plurality of feedhorns to alter the radiation patterns according to dielectric constants of the dielectric inserts to permit simultaneous transmission and reception of the signals; and
a reflector configured to produce multiple antenna beams based upon the altered radiation patterns of the feedhorns to communicate with the plurality of satellites, wherein the plurality of satellites are spaced 2.0°
or less apart.- View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification
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Current AssigneeDIRECTV, LLC (AT&T, Inc.)
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Original AssigneeHughes Electronics Corporation (Rtx Corporation)
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InventorsHou, Peter, Lundstedt, Jack Jr., Jackson, Thomas
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Primary Examiner(s)PHAN, THO GIA
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Application NumberUS09/736,712Publication NumberTime in Patent Office943 DaysField of SearchH01/Q 1.302, 343/755, 343/756, 343/772, 343/775, 343/779, 343/781.R, 343/785, 343/786US Class Current343/786CPC Class CodesH01Q 19/08 for modifying the radiation...H01Q 19/17 the primary radiating sourc...H01Q 25/007 using two or more primary a...
