Patent ID: 7917170

Claim:
A radio frequency (RF) circuit, comprising: a first Advanced Wireless Services (AWS)-path phase shifter receiving an AWS band transmission signal and a PCS band transmission signal; a first Personal Communication Service (PCS)-path phase shifter receiving the AWS band transmission signal and the PCS band transmission signal; a first filter, coupled to the first AWS-path phase shifter, configured to bandpass filter the AWS band transmission signal; and a second filter, coupled to the first PCS-path phase shifter, configured to bandpass filter the PCS band transmission signal; a second AWS-path phase shifter coupled to the first filter; a second PCS-path phase shifter coupled to the second filter; and a power amplifier, coupled to the first AWS-path phase shifter and the second PCS-path phase shifter, configured to amplify the AWS band transmission signal and the PCS band transmission signal to generate an amplified AWS band signal and an amplified PCS band transmission signal.