Satellite signaling system having a signal beam with a variable

Details Satellite signaling system having a signal beam with a variable Satellite signaling system having a signal beam with a variable

1991-09-13

1992-06-09

Eisenzopf, Reinhard J.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

34082544, 342356, H04B 7185, G08B 522

Patent

active

051215039

ABSTRACT:
This invention relates to a satellite signalling system, such as a satellite paging system, having signal coverage over a very wide area. The satellite signalling system comprises a satellite to which is coupled an antenna for providing a signal beam having a variable beam area. The satellite can control the position of the antenna such that the signal beam can be directed in a predetermined sequence to a plurality of locations on earth. The antenna is arranged to vary the signal beam's area in dependence on the location to which the signal beam is directed. The signal beam comprises a data signal having a data rate which can be varied by the antenna in dependence on the beam area.

REFERENCES:
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patent: 3836721 (1974-09-01), Sugioka
patent: 4145658 (1979-03-01), Acampora et al.
patent: 4268831 (1981-05-01), Valentino et al.
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patent: 4518916 (1985-05-01), Davis et al.
patent: 4595926 (1986-06-01), Kobu et al.
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patent: 4682165 (1987-07-01), Davis
patent: 4689625 (1987-08-01), Barmat
patent: 4816820 (1989-03-01), Davis
Proceeding of the 8th European Microwave Conference, Paris France, (Sep. 4-8, 1978), D. O. Reudink et al., "A High-Capacity Satellite Utilizing Fixed and Scanning Spot Antenna Beams".

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