Patent ID: 8145160

Claim:
A Tx module for wireless communications, comprising: a plurality of Tx signal input ports configured to receive Tx signals of different frequencies, respectively; a plurality of power amplification units having input ports connected to the plurality of Tx signal input ports, respectively; a plurality of matching circuit units configured as transformers having input ports connected to output ports of the plurality of power amplification units, respectively; a plurality of harmonic filter units having input ports connected to output ports of the plurality of matching circuit units, respectively; a switch unit having input ports and an output terminal, the input ports of the switch unit connected to output ports of the plurality of harmonic filter units, respectively, and the switch unit being configured to selectively direct a signal applied on one of the input ports of the switch unit to the output terminal of the switch unit; a gain/switching control unit configured to control gains of the power amplification units and to control the switch unit; and a Tx signal output port connected to the output terminal of the switch unit, wherein each of the plurality of power amplification units comprises a plurality of power amplifiers configured to amplify corresponding Tx signals, wherein at least one of the transformers of the matching circuit units comprises: a plurality of primary windings connected to output ports of corresponding power amplifiers; and a secondary winding inductively coupled in common to the plurality of primary windings.