Patent ID: 8855584

Claim:
Transmission circuitry comprising: power amplifier circuitry that comprises an input and an output and is configured to amplify a radio frequency (RF) input signal, which includes data that has been modulated for transmission; an input matching network coupled to the input of the power amplifier circuitry and comprising a first plurality of variable impedance elements, wherein values of the first plurality of variable impedance elements are controlled by at least one impedance control signal; and impedance control circuitry configured to generate the at least one impedance control signal to dynamically control the values of the first plurality of variable impedance elements based on a center frequency of the RF input signal and at least one operating parameter condition such that the input matching network substantially continuously provides a desired source impedance at the center frequency of the RF input signal and a desired source impedance at one or more harmonics of the RF input signal as the center frequency of the RF input signal and the at least one operating parameter condition change during operation.