校正传送器／接收器的第一、第二讯号路径之间的不匹配的校正方法与校正装置;CALIBRATION METHOD AND CALIBRATION APPARATUS FOR CALIBRATING MISMATCH BETWEEN FIRST SIGNAL PATH AND SECOND SIGNAL PATH OF TRANSMITTER/RECEIVER

摘要

一种应用于一传送器的一同相讯号路径与一正交讯号路径不匹配的校正方法，包含有：于该传送器的一传送端额外设定至少一混频器校正系数；从该传送端将至少一混频器测试讯号回送以进行频谱分析来得到至少一混频器频谱分析结果；依据该至少一混频器频谱分析结果来调整该传送端之该至少一混频器校正系数；额外利用一同相讯号路径有限脉冲响应滤波器以及一正交讯号路径有限脉冲响应滤波器来校正该传送端之该同相讯号路径的一低通滤波器以及该传送端之该正交讯号路径的一低通滤波器之间的不匹配。类似的不匹配校正操作亦可应用于一接收器。; obtaining at least one mixer testing signal from the transmitting part via loopback for spectrum analysis to derive at least one mixer spectrum analysis result; adjusting the at least one mixer calibration coefficient of the transmitting part according to the at least one mixer spectrum analysis result; additionally utilizing an in-phase signal path finite impulse response filter and a quadrature signal path finite impulse response filter to calibrate mismatches between a low pass filter of the in-phase signal path of the transmitting part of the transmitter and a low pass filter of the quadrature signal path of the transmitting part of the transmitter. A similar mismatch calibration operation may be applied to a receiver.