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Patent US4813036A successfully refreshed from Google Patents.
US4813036A
Expired / Lapsed
US
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Fully interconnected spot beam satellite communication system
Assignee: NATIONAL EXCHANGE Inc 1505 PLANNING RESEARCH DRIVE MCLEAN VA 22102 A CORP OF DE
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Filing: 1985-11-27
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Granted: 1989-03-14
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Expires: 2005-11-27
Abstract
Abstract A communication signal can be routed from any location in a spot beam satellite system to any other location within the spot beam system by simply choosing the proper carrier frequency for the uplink to the satellite. The spot beams are fully interconnected without any need for active switching within the satellite. An uplink signal received by one or more satellites in a particular orbit location may be routed, depending on its frequency, to any downlink spot beam. A network control center located on the ground in one of the spot beam coverage areas receives signalling requests from all the spot beam coverage areas and assigns frequencies so that the desired routing can be established. All of this is accomplished without any signal demodulation or active switching of circuit paths in the satellite.
Inventors
- 👤 Clay T. Whitehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:09
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/2041
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A communication system for providing communication routes between a plurality of communication points, comprising frequency-selective routing array means having a plurality of electronic paths wherein each electronic path is distinct from each other electronic path and said frequency-selective routing array means is adapted to receive electronic signals and transmit electronic signals and is adapted to be located within an airborne satellite, and network control means located on the ground and physically apart form said frequency-selective routing array means and adapted to communicate with said communication points and adapted to select carrier frequencies for communications between said communication points and through said frequency-selective routing array means and wherein the frequency of said selected carrier frequencies determines which electronic path is used.
Claim 2
Dependent Claim
120 words
A communication system for providing communication routes between a plurality of communication points, comprising frequency-selective routing array means having a plurality of electronic paths wherein each electronic path is distinct from each other electronic path and said frequency-selective routing array means is adapted to receive electronic signals and transmit electronic signals and is adapted to be located within an airborne satellite, and network control means located on the ground and physically apart form said frequency-selective routing array means and adapted to communicate with said communication points and adapted to select carrier frequencies for communications between said communication points and through said frequency-selective routing array means and wherein the frequency of said selected carrier frequencies determines which electronic path is used.
Claim 3
Dependent Claim
52 words
A communication system as in claim 1 wherein said satellite is adapted to use spot beams and said frequency-selective routing array means is adapted to communicate with said communication points using spot beams and wherein said network control means is adapted to communicate with said frequency-selective routing array means using spot beams.
Claim 4
Dependent Claim
56 words
A communication system as in claim 2 wherein each said electronic path of said frequency-selective routing array means corresponds to a different carrier frequency and wherein said network control means is adapted to select a particular carrier frequency to be used by each communication point for communications between communication points through said frequency-selective routing array means.
Claim 5
Dependent Claim
150 words
A spot beam satellite communication system for providing communication routes between a plurality of ground stations comprising frequency-selective routing array means having a plurality of electronic paths wherein each electronic path is distinct from each other electronic path and said frequency-selective routing array means is adapted to receive and transmit electronic signals and to be located within an airborne satellite adapted to use spot beams, network control means physically apart from said frequency-selective routing array means and located on the ground, and adapted to communicate with said ground stations and to select carrier frequencies for communications with said ground stations and through said frequency-selective routing array means, and wherein the frequency of said selected carrier frequency determines which electronic path is used, and spot beam antenna means located on said satellite and adapted to transmit electronic signals as said spot beams and to receive electronic signals from said ground stations.
Claim 6
Dependent Claim
150 words
A spot beam satellite communication system for providing communication routes between a plurality of ground stations comprising frequency-selective routing array means having a plurality of electronic paths wherein each electronic path is distinct from each other electronic path and said frequency-selective routing array means is adapted to receive and transmit electronic signals and to be located within an airborne satellite adapted to use spot beams, network control means physically apart from said frequency-selective routing array means and located on the ground, and adapted to communicate with said ground stations and to select carrier frequencies for communications with said ground stations and through said frequency-selective routing array means, and wherein the frequency of said selected carrier frequency determines which electronic path is used, and spot beam antenna means located on said satellite and adapted to transmit electronic signals as said spot beams and to receive electronic signals from said ground stations.
Claim 7
Dependent Claim
163 words
A spot beam satellite communication system for providing communication routes between a plurality of ground stations comprising satellite means adapted to be airborne, frequency-selective routing array means having a plurality of electronic paths wherein each electronic path is distinct from each other electronic path and said frequency-selective routing array means is adapted to receive and transmit electronic signals and to be located within said satellite, ground stations adapted to transmit signals and to receive signals from said satellite means, network control means physically apart from said frequency-selective routing array means and located on the ground, and adapted to communicate with sad ground stations and to select carrier frequencies for communications between said ground stations and through said frequency-selective routing array means, and wherein the frequency of said selected carrier frequency determines which electronic path is used, and spot beam antenna means located on said satellite and adapted to transmit electronic signals as spot beams and to receive electronic signals from said ground stations.
Claim 8
Dependent Claim
163 words
A spot beam satellite communication system for providing communication routes between a plurality of ground stations comprising satellite means adapted to be airborne, frequency-selective routing array means having a plurality of electronic paths wherein each electronic path is distinct from each other electronic path and said frequency-selective routing array means is adapted to receive and transmit electronic signals and to be located within said satellite, ground stations adapted to transmit signals and to receive signals from said satellite means, network control means physically apart from said frequency-selective routing array means and located on the ground, and adapted to communicate with sad ground stations and to select carrier frequencies for communications between said ground stations and through said frequency-selective routing array means, and wherein the frequency of said selected carrier frequency determines which electronic path is used, and spot beam antenna means located on said satellite and adapted to transmit electronic signals as spot beams and to receive electronic signals from said ground stations.
Claim 9
Dependent Claim
20 words
A system as in claim 5 including fractional filter means wherein a fractional filter is in each said electronic path.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |