Patent ID: 8594241

Claim:
An IQ imbalance estimating and compensating method for a baseband sampling system, characterized in that said method comprises: providing an IQ imbalance estimator and compensator which comprises a crosstalk gain estimator, a Q-path gain estimator, an IQ imbalance compensator, a lock detector, the IQ imbalance estimator and compensator being disposed after an analog-to-digital converter (ADC) and a DC offset remover, and the crosstalk gain estimator being utilized for estimating a crosstalk gain value, and the Q-path gain estimator being utilized for estimating a reciprocal of Q-path gain value, and the IQ imbalance estimator and compensator being utilized for executing IQ imbalance estimation and compensation through the crosstalk gain value and the reciprocal of Q-path gain value.