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Method and apparatus for compensation of imbalance in zero-if downconverters
Method and apparatus for compensation of imbalance in zero-if downconverters
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机译:零中频下变频器的不平衡补偿方法和装置
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摘要
To compensate the audio distortion resulting from amplitude and phase imbalance in the quadrature oscillator (103) and mixers (105, 115) in zero-IF downconverters (203), a balancing action is required. An apparatus for distortion compensation compensates for the amplitude and phase imbalance to reduce audio distortion. This is accomplished by determining (309) two gain values, which are combined (217, 227, 229) with the in-phase and quadrature components of the zero-IF downconverter (203) to compensate for the imbalance.
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