Patent ID: 8380145

Claim:
An integrated circuit for a wireless communication unit comprising a transmit power control system that employs a quadrature (I/Q) based power detector having at least one reference path and at least one detector path, wherein the integrated circuit comprises: a first quadrature error determination module for determining a quadrature error of a transmit signal; a second quadrature error determination module for determining a quadrature error of a detector signal input to the at least one detector path; a first quadrature balancing module operably coupled to the first quadrature error determination module and arranged to correct for quadrature error of the transmit signal and output a reference signal to the at least one reference path; a second quadrature balancing module operably coupled to the first quadrature error determination module and arranged to correct for quadrature error of the reference signal input to the at least one reference path; and a third quadrature balancing module operably coupled to the second quadrature error determination module and arranged to correct for quadrature error of the detector signal input from the at least one detector path.