| 摘要 |
A wireless transceiver featuring a compensating filter circuit (17) with a frequency and optionally an amplitude response which has the same function as the composite of filter effects from the transmit side (15) as well as from the intermediate frequency (IF) stage of the receive side (13). The compensating filtering approximately duplicates the effects of the phase lock loop on the transmit side and the effects of IF filtering on the receive side, as well as amplitude distortion in the detector, which would delay or distort the audio. Then, the compensated audio is added or subtracted, depending on phase considerations, from the receive signal so that the receive signal is free of filter artifacts. |
