A SYSTEM FOR REDUCING TRANSMITTER CROSS-TALK IN RECEIVE PART OF A RF TRANSCEIVER

摘要

A system (150) for suppressing RF signals (211) transmitted by a transmitter (101) from the RF signals (212) received by a receiver (102). The RF signals transmitted by a transmitter are sampled by a coupler (107) of the system (150). The RF signals are then applied to a modulator (130) which adjusts the signals from the transmitter (101) to have an equal frequency and amplitude as the RF signals from the transmitter (101) as well as an opposite phase. The modulated signal is applied to the RF signals received by a receiver antenna (120). The modulated signals and signals from the transmitter cancel out which eliminates transmitter signals in the received signal. The resulting signal is monitored to determine the noise signals remaining in the received signal. The modulator is then adjusted to minimize the noise signals.