Satellite with different size service link antennas and radioterminal communication methods using same
First Claim
Patent Images
1. A space segment for a radioterminal communications system comprising:
- a satellite including service link antennas of different sizes, each of said service link antennas being configured to communicate with at least one radioterminal, at least one of the service link antennas being configured to receive both Left Hand Circularly Polarized (LHCP) radiation and Right Hand Circularly Polarized (RHCP) radiation,wherein a gain-to-temperature ratio (G/T) of the at least one of the service link antennas that is configured to receive both LHCP radiation and RHCP radiation comprises a value of 21 dB/K.
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Abstract
A space segment for a radioterminal communications system includes a satellite having service link antennas of different sizes that are configured to communicate with at least one radioterminal. The service link antennas of different size may serve different sized geographic areas, which may at least partially overlap. Analogous radioterminal communications methods also are provided.
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Citations
66 Claims
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1. A space segment for a radioterminal communications system comprising:
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a satellite including service link antennas of different sizes, each of said service link antennas being configured to communicate with at least one radioterminal, at least one of the service link antennas being configured to receive both Left Hand Circularly Polarized (LHCP) radiation and Right Hand Circularly Polarized (RHCP) radiation, wherein a gain-to-temperature ratio (G/T) of the at least one of the service link antennas that is configured to receive both LHCP radiation and RHCP radiation comprises a value of 21 dB/K. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 61)
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13. A radioterminal communications method comprising:
communicating between a satellite and at least one radioterminal over a plurality of service links using a plurality of service link antennas of different sizes, wherein at least one of the service link antennas is configured to receive both Left Hand Circularly Polarized (LHCP) radiation and Right Hand Circularly Polarized (RHCP) radiation and wherein a gain-to-temperature ratio (G/T) of the at least one of the service link antennas that is configured to receive both LHCP radiation and RHCP radiation comprises a value of 21 dB/K. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 62)
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25. A space segment for a radioterminal communications system comprising:
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a satellite comprising first and second service link antennas, wherein the first service link antenna is configured to receive both Left Hand Circularly Polarized (LHCP) radiation and Right Hand Circularly Polarized (RHCP) radiation and wherein the second service link antenna is configured to receive only LHCP or RHCP radiation, and wherein a gain-to-temperature ratio (G/T) of said first service link antenna that is configured to receive both LHCP radiation and RHCP radiation comprises a value of 21 dB/K. - View Dependent Claims (26, 27, 28, 29, 30, 31, 63)
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32. A radioterminal communications method comprising:
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communicating between a satellite and at least one radioterminal over a plurality of service links using first and second service link antennas, wherein communicating comprises; receiving both Left Hand Circularly Polarized (LHCP) radiation and Right Hand Circularly Polarized (RHCP) radiation at the first service link antenna; and receiving only LHCP or RHCP radiation at the second service link antenna, and wherein a gain-to-temperature ratio (G/T) of said first service link antenna that receives both LHCP radiation and RHCP radiation comprises a value of 21 dB/K. - View Dependent Claims (33, 34, 35, 36, 37, 38, 64)
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39. A space segment for a radioterminal communications system comprising:
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a satellite comprising a first service link antenna configured to provide a first return service link and a first forward service link for communicating with at least one radioterminal and a second service link antenna that is smaller than the first service link antenna and configured to provide a second return service link and a second forward service link for communicating with at least one radioterminal; wherein the satellite further comprises a signal processing equipment for at least one of the first return service link, the first forward service link, the second return service link and/or the second forward service link and is free of the signal processing equipment for at least another one of the first return service link, the first forward service link, the second return service link and/or the second forward service link, and wherein a gain-to-temperature ratio (G/T) of said first service link antenna configured to provide a first return service link comprises a value of 21 dB/K. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 65)
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50. A radioterminal communications method comprising:
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communicating between a satellite and at least one radioterminal using a first service link antenna configured to provide a first return service link and a first forward service link and a second service link antenna that is smaller than the first service link antenna and configured to provide a second return service link and a second forward service link; processing on-board the satellite, signals associated with at least one of the first return service link, the first forward service link, the second return service link and/or the second forward service link; and processing external to the satellite, signals associated with at least another one of the first return service link, the first forward service link, the second return service link and/or the second forward service link, and wherein a gain-to-temperature ratio (G/T) of said first service link antenna configured to provide a first return service link comprises a value of 21 dB/K. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 66)
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Specification