Communications: radio wave antennas – Antennas – Wave guide type
Patent
1988-11-08
1989-09-12
Hille, Rolf
Communications: radio wave antennas
Antennas
Wave guide type
343872, H01Q 142
Patent
active
048664570
ABSTRACT:
An inverted offset system is used for sending and/or receiving electromagnetic energy. The system, which is preferably a Cassegrainian microwave antenna system, includes a water-tight cover to protect the feed compartment, subreflector, and main reflector of the antenna. The cover protects against the effects of precipitation and is especially useful when the system is used for measuring atmospheric conditions such as rain or snow. A waterguard ridge and drain passageway are used to protect the feed compartment from precipitation when the antenna is disposed in a position to send or receive beams which are substantially vertical.
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Englert Alvin J.
Feeney William L.
Hille Rolf
Johnson Doris J.
The United States of America as represented by the Secretary of
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