Patent ID: 7095988

Claim:
A device for minimizing performance degradation of a linear transmitter block of a radio communication device in the presence of antenna interference, the linear transmitter block including a main amplifier closed feedback loop to control gain and linearity of a radio frequency (RF) power amplifier and an auxiliary loop comprising an isolator eliminator to compensate at baseband for antenna load variations on the RF power amplifier, and an upconverter for converting baseband signals into radio frequency signals, the device comprising the RF power amplifier having an adjustable driver arranged to receive from said upconverter an input signal which includes a component from said main amplifier feedback loop and to receive a gain control signal from said auxiliary loop, the adjustable driver being coupled between the upconverter and the amplifier for causing said amplifier to be operable to amplify said received input signal according to said gain control signal and to provide an amplified output signal a portion of which is provided in operation to said main amplifier feedback loop for generating the component included in the input signal from the upconverter.