Patent ID: 9413444
Filing Date: 2016-08-09
CPC Classification: H04B

Claim Text:
1. A radio frequency (RF) processing circuit used in a wireless communication device, comprising: an RF front-end circuit, coupled to a plurality of antennas and a plurality of communication modules for switching connections between the plurality of antennas and the plurality of communication modules according to a control signal; and a control unit, coupled to the RF front-end circuit for generating the control signal according to a frequency band and operation conditions of each communication module; wherein the RF front-end circuit comprises: a frequency multiplexing module, comprising a plurality of frequency multiplexing units, each of the frequency multiplexing units is coupled to one of the plurality of antennas and comprises a plurality of input terminals, each of the frequency multiplexing units is configured for exchanging signals between the plurality of input terminals and corresponding antenna; and a switch module, comprising a plurality of primary switch units, each of the primary switch units comprises a plurality of primary output terminals and each of the primary switch units is coupled to one of the plurality of communication modules and is configured for switching connections between corresponding communication module and the plurality of the frequency multiplexing units according to the control signal; wherein the switch module further comprises: a plurality of secondary switch units, each of secondary switch units couples to the frequency multiplexing module and the plurality of primary switch units for switching connection between the plurality of primary output terminals and the plurality of input terminals; wherein the primary output terminals of each of the plurality of primary switch units respectively correspond to each of the plurality of antennas and the primary output terminals coupled to the same secondary switch unit correspond to the same frequency band.