In the receiving system of Ultra-Wide Band (UWB) coherent receiver, the amplitude and phase unbalances and DC offsets of in-phase and quadrature channels might affect the performance of the system. In this paper, the affection of imbalances and DC offsets of I/Q demodulators to signal processing are analyzed. One method of calibrating of amplitude and phase imbalances is introduced and the result of computer simulation is given.
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刘光平,黎向阳,梁甸农,等.超宽带信号正交解调误差的分析及校正. The Analysis and Correction of Quadrature Demodulation Errors of Ultra-Wide-Band Signal[J].国防科技大学学报,1999,21(4):67-70.