%0 Journal Article
%T IMPLEMENTATION OF THE CORRECTOR OF ERRORS IN I & Q CHANNELS WITH DSP<br>用DSP实现相参处理器I/Q通道幅相误差自动校正
%A Zhang Xinggan
%A Zhu Zhaoda
%A <br>张兴敢
%A 朱兆达
%J 电子与信息学报
%D 1999
%I 
%X This paper describes the implementation of the corrector of I & Q errors in coherent processor. The correcting network consists of combination logic circuit and it can correct the gain and phase imbalances and the bias errors of the in-phase and quadrature channels in coherent signal processing. The correcting coefficients are computed with DSP using a test signal. The image level without correction is about -27dB if the errors of gain and phase in the coherent processor are 0.1dB and 5° respectively. The experimental results show that the image level is reduced to -52dB from -27dB after correcting the errors.
%K DSP
%K Coherent signal processing
%K Correcting errors<br>数字信号处理器
%K 相参信号处理
%K 误差校正
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=72D2790EBEE44A45B3933E598FB7C55F&yid=B914830F5B1D1078&vid=659D3B06EBF534A7&iid=38B194292C032A66&sid=A2745AA1110798CA&eid=AA5FB09E1F81059E&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=2