Patent ID: 8805305

Claim:
A wireless communication element comprising: a transmit path configured to convert a digital signal into a wireless communication signal; an antenna coupled to the transmit path and configured to transmit the wireless communication signal; a feedback receive path communicatively coupled between the antenna and transmit path and configured to receive a feedback signal indicative of a power level of the wireless communication signal transmitted from the transmit path to the antenna; and an error tracking path coupled to the feedback receive path, the error tracking path configured to: receive the feedback signal; compensate for a gain imbalance between an I channel component and a Q channel component of the feedback signal such that the gain of the I channel component and the gain of the Q channel component are approximately equal; compensate for a phase imbalance between the I channel component and the Q channel component of the feedback signal such that the I channel component and the Q channel component are in approximately quadrature phase with each other; receive a reference signal associated with the digital signal; determine a gain of the feedback signal with respect to the reference signal; determine a gain error based on the determined gain and an expected gain; and detect interference associated with the wireless communication signal based on an unexpected change in a magnitude of the feedback signal and a corresponding change in a difference between the feedback signal and the reference signal multiplied by the determined gain.