Patent ID: 8779868

Claim:
A mobile wireless communications device comprising: an antenna; a power amplifier having an amplifier impedance; an adjustable impedance matching network coupled between said power amplifier and said antenna and comprising at least one adjustable impedance element; an impedance sensor coupled between said power amplifier and said adjustable impedance matching network; a processor coupled to said power amplifier, said adjustable impedance matching network and said impedance sensor, said processor configured to a) calculate a corrected antenna load impedance based upon a sensed impedance at inputs of said impedance matching network and based upon at least one current value of said at least one adjustable impedance element, b) determine at least one new value for said at least one adjustable impedance element based upon the corrected antenna load impedance, c) set said at least one adjustable impedance element to the at least one new value, and d) sense a new impedance at the inputs of said adjustable matching network and determining if the sensed new impedance is within a threshold value of the power amplifier impedance, and repeat steps a), b), and c) if the sensed new impedance is not within the threshold value of the power amplifier impedance.