| 摘要 |
An apparatus, an integrated circuit, and a method of compensating I/Q (inphase/quadrature) phase mismatch. The apparatus comprises a mixer, a phase detector, and a calibration controller. The mixer mixes an inphase calibration signal with an inphase component of a local oscillation signal to generate a first signal, mixes a quadrature calibration signal with a quadrature component of the local oscillation signal to generate a second signal, and mixes an incoming RF signal with the local oscillation signal to demodulate the incoming RF signal. The phase detector coupled to the mixer, determines a phase difference between the first and second signals. The calibration controller coupled to the phase detector, adjusts phases of the inphase and quadrature calibration signals such that the phase difference is substantially 90 degrees.
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