Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Patent
1997-11-17
1999-12-28
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
455 78, 333103, H04B 144
Patent
active
060093145
ABSTRACT:
An antenna switch for selectively connecting an output differential signal pair of an output power amplifier to a single-ended signal of an antenna when transmitting and selectively connecting an input differential signal pair of a low noise input amplifier to the single-ended signal of the antenna when receiving. A first balun having a single ended-signal connected to an antenna connects a first and second output differential signal to a power output amplifier. A second balun having a single-ended signal connected to the antenna connects a first and second input differential signal to a low noise input amplifier. A first diode selectively shorts the first output differential signal to the second output differential signal of the first balun when receiving and a second diode selectively shorts the first input differential signal to the second input differential signal of the second balun when transmitting.
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Bjork Christian
Lantz Martin
Mattisson Sven
Bost Dwayne D.
Telefonaktiebolaget L M Ericsson
Vuong Quochien Ba
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