| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an improved, compact, full-duplex radio transceiver. <P>SOLUTION: A duplex radio transceiver, coupled to baseband circuitry and to an antenna, includes a receive chain, a transmit chain and a duplexer. The transmit chain includes filter components 52, 56 that attenuate signals originating from the transmit chain in a receive frequency band by a stop-band attenuation that is approximately equal to or greater than the stop-band attenuation of the duplexer in the receive band. Similarly, the receive chain includes filter components 68, 72 that attenuate signals in a transmit frequency band by a stop-band attenuation that is approximately equal to or greater than the stop-band attenuation of the duplexer in the transmit band. A bias control circuit 74 senses a power level associated with radio signals in the transmit chain and adjusts an amplifier 66 in the receive chain responsive to the power level. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
