WIRELESS COMMUNICATION DEVICE, METHOD AND POWER AMPLIFIER OF THE SAME

摘要

A wireless communication device that includes a power amplifier and an antenna is provided. The power amplifier includes a first and a second power amplifying paths, a first and a second selection circuits, first matching circuits and second matching circuits. The first and the second power amplifying paths receive a first and a second input signals respectively. The first selection circuit selects one of the first matching circuits according to a frequency band of the first input signal to perform a first matching process to generate a first output signal. The second selection circuit selects one of the second matching circuits according to a frequency band of the second input signal to perform a second matching process to generate a second output signal. The antenna is coupled to the power amplifier to transmit the first and/or the second output signals.

主权项

1. A power amplifier, comprising:
a first power amplifying path to receive a first input signal within a first frequency range, wherein the first input signal is further within one of a plurality of first frequency sub-bands of the first frequency range; a plurality of first matching circuits each comprising a first circuit structure and a first matching parameter corresponding to one of the first frequency sub-bands; a first selection circuit coupled between the first power amplifying path and the first matching circuits to select one of the first matching circuits according to a frequency band where the first input signal is located therein to perform a first matching process on the first input signal to generate a first output signal; a second power amplifying path to receive a second input signal within a second frequency range, wherein the second input signal is further within one of a plurality of second frequency sub-bands of the second frequency range, and frequencies of the second frequency range are higher than those of the first frequency range; a plurality of second matching circuits each comprising a second circuit structure and a second matching parameter corresponding to one of the second frequency sub-bands; and a second selection circuit coupled between the second power amplifying path and the second matching circuits to select one of the second matching circuits according to the frequency band where the second input signal is located therein to perform a second matching process on the second input signal to generate a second output signal.