Patent ID: 7130359

Claim:
A receiver for receiving a radio frequency signal, the receiver having a self-calibrating receive path correction system for correction of an I/Q gain imbalance and an I/Q phase imbalance in the radio frequency signal, the receiver comprising: a signal-processing block for processing the received radio frequency signal, thereby producing an unequalized I-signal and an unequalized Q-signal, wherein the signal processing block includes digital offset correction during the processing of the received radio frequency signal; an I/Q phase imbalance detection and correction circuit coupled to the signal-processing block for equalizing a phase of the unequalized I-signal and a phase of the unequalized Q-signal, thereby producing a phase equalized I-signal and a phase equalized Q-signal; an I/Q gain imbalance detection and correction circuit coupled to the I/Q phase imbalance detection and correction circuit for equalizing a gain of the phase equalized I-signal and a gain of the phase equalized Q-signal, thereby producing an I-image signal and a Q-image signal; an adaptive loop bandwidth control circuit coupled to the I/Q phase imbalance detection and correction circuit and to the I/Q gain imbalance detection and correction circuit for dynamically adjusting at least one loop bandwidth for the I/Q gain imbalance detection and correction circuit and the I/Q phase imbalance detection and correction circuit on at least one slot boundary; and wherein an at least one PN training signal is used for a self-calibration of the I/Q phase imbalance detection and correction circuit and the I/Q gain imbalance detection and correction circuit during a warm-up sequence to compensate for imbalances due to the signal-processing block.