Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-10-17
1979-08-07
Safourek, Benedict V.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
325 65, 343100ST, 343207, H04B 1500, H04B 100
Patent
active
041639421
ABSTRACT:
The present invention relates to method and apparatus for communicating with one or more receiver stations disposed within a blackout region located in the vicinity of and surrounding each spot beam coverage area, the blackout region being caused by interference between concurrently transmitted and overlapping global coverage and spot coverage antenna radiated beams using the same frequency band despite the application of global beam interference suppression techniques at the spot beam receiving areas. Access to the receiver stations within each blackout region is provided by selectively turning off the associated interfering spot beam during a predetermined interval of time while ensuring that the power level of the radiated global coverage beam is not suppressed within the accessed blackout region to permit the global coverage beam to communicate with these receiver stations.
REFERENCES:
patent: 2579882 (1951-12-01), Thompson
patent: 3094695 (1963-06-01), Jahn
patent: 3205443 (1965-09-01), Ludwig
patent: 3710255 (1973-01-01), Gicca
patent: 3987444 (1976-10-01), Masak et al.
Acampora Anthony
Reudink Douglas O.
Yeh Yu S.
Bell Telephone Laboratories Incorporated
Chin Tommy P.
Pfeifle Erwin W.
Safourek Benedict V.
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