Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-07-13
1986-07-08
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343354, 343358, 343359, H04B 7185
Patent
active
045996199
ABSTRACT:
A satellite antenna pointing system for separately pointing separated transmit and receive high gain antenna systems includes means for separately and sequentially applying a beacon signal to the transmit and receive antenna systems and a broad beam width antenna which has a coverage area greater than the overall coverage region of the spot beam antenna systems. The system includes ground stations located at or near the periphery of the overall coverage region adapted to receive these beacon signals. At a central control station these beacon signals are compared to provide first signals proportional to the ratio of said beacon signals received from said transmit antenna system and said broad beam width antenna and second signals proportional to the ratio of said beacon signals received from said satellite receive antenna system and said broad beam width antenna. The central station generates from said first signals transmit antenna control signals which are sent to the satellite to control the orientation of said transmit antenna system. Likewise, the central control station generates from the second signals receiver antenna control signals which are applied to the satellite to control the orientation of the satellite receive antenna system.
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"Spectral Reuse in 12 GHz Satellite Communication Systems", by D. O. Reudink et al. in IEEE Conference Record ICC77, Jun. 12-15, 1977, Chicago, Ill., vol. 3 at pp. 37.5-32 to 37.5-35.
Brown, Irving, "Satellite Communications System" filed Feb. 26, 1982, Ser. No. 352,882.
Hartshorne Frank A.
Keigler John E.
Blum Theodore M.
RCA Corporation
Sotomayor John B.
Tripoli Joseph L.
Troike Robert L.
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