The wireless communication system generally consists of four parts: antenna, RF front-end, RF transceiver module and baseband signal processor. According to the function, the RF front end can be divided into transmitter Tx and receiver Rx. The main components in the RF front-end include: Power Amplifier (PA), Filter, Switch, Low Noise Amplifier (LNA), Tuner, dual /Multiplexer (Du/Multiplexer).
