Point to point microwave communication service antenna pattern with anull in an interering direction
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United States of America Patent
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-
Jun 12, 1990
Grant Date -
N/A
app pub date -
Sep 9, 1982
filing date -
Sep 9, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a point to point microwave communication service including a microwave antenna system at each point directed at the other point, the radiation pattern of the antenna system at at least one point has a substantial null in the direction of an antenna of another microwave communication service to avoid an exchange of signals with the other service, the antenna system provided at said one point includes two antenna elements having substantially equal directional radiation patterns, so oriented and spaced apart a distance that is at least several wave length of the operating frequency of the elements so that the radiation patterns of the elements overlap producing a net radiation pattern that results from interference of the patterns and the net pattern has a substantial lobe in the direction of the other point of said service and a substantial null in the direction of an antenna of the other microwave communication service.
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