RF transceiver having a T/R switch circuit with high...

Details RF transceiver having a T/R switch circuit with high... RF transceiver having a T/R switch circuit with high...

2008-11-30

2011-11-22

Donovan, Lincoln (Department: 2816)

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

C455S083000, C327S534000, C327S535000, C327S537000

Reexamination Certificate

active

08064845

ABSTRACT:
A RF transceiver includes an antenna, a receiver, a baseband circuit, a transmitter, and a T/R switch circuit. The T/R switch circuit is used for coupling the antenna and the receiver or coupling the antenna and the transmitter. The T/R switch circuit is coupled to the baseband circuit so as to receive biases provided from the baseband circuit. The T/R switch circuit includes four transistors and a power detector. The power detector detects the power of the output signal of the T/R switch circuit, so that the baseband circuit can adjust biases provided to the T/R switch circuit according to the power of the output signal.

REFERENCES:
patent: 6094088 (2000-07-01), Yano
patent: 2004/0077316 (2004-04-01), Xiong

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