Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Patent
1990-09-13
1993-04-06
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
343700MS, 455327, H04B 140, H01Q 2300
Patent
active
052010651
ABSTRACT:
Planar millimeter wave transceiver includes a plurality of patch antenna elements disposed on a substrate in right and left hand circular polarization. Microstrip feeds having an intermediate feed point, interconnect adjacent elements. First switches interconnect with the feed points of adjacent feeds and are alternately operable between first and second states for establishing azimuth and elevation. Second switches interconnected with the first switches are alternately operable between first and second states for establishing transmit and receive modes for the antenna and with phase compensation. The microstrip feeds, and the first and second switches are interconnected on the substrate without crossovers. Transmitter and receiver elements may also be incorporated onto the substrate to form an integrated transceiver.
REFERENCES:
patent: 4742354 (1988-05-01), Wen et al.
"Microstrip Antennas", I. J. Bahl and P. Bhartia, Artech House, 1980, pp. 71-73.
Eisenzopf Reinhard J.
Martin T. H.
Pham Chi H.
Westinghouse Electric Corp.
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