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宽带数字接收机的I/Q通道失配校正 被引量：4

The Calibration of I/Q Bi-channel Mismatch in Wideband Receiver
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摘要 由于各种因素的影响,I/Q通道之间通常会发生失配现象,影响接收机的性能.分析了幅相误差校正参数的提取方法,提出了基于FIR滤波器的宽带数字接收机的数字域校正方法,研究了校正频点数、校正频点位置对系统性能的影响.仿真结果表明,这种方法能有效提高宽带接收机I/Q通道的正交一致性. Due to diversified factors,I/Q mismatch generates and the performance of receiver become worse.This paper analysises the method to estimate the I/Q mismatch errors,and a calibration method of digital correction based on FIR filter for wideband digital receiver is proposed.The influence of the number and the position of calibration frequencies on the system is analyzed.The simulation demonstrates that this method can improve the performance of wideband receiver effectively.
作者 陈燕
机构地区 华侨大学信息科学与工程学院
出处 《宁夏大学学报（自然科学版）》 CAS 2012年第1期28-30,共3页 Journal of Ningxia University(Natural Science Edition)
基金 华侨大学科研基金资助项目(08HZR15)
关键词 I/Q失配 镜像抑制度 正交解调 增益误差 相位误差 I/Q mismatch image rejection ratio quadrature demodulation gain error phase errors
分类号 O174.2 [理学—基础数学]
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参考文献6

  • 1万永伦,姒强,吕幼新,汪学刚.基于信号产生器的幅相误差分析与校正[J].现代雷达,2007,29(12):101-104. 被引量：5
  • 2CHURCHILL F E,OGAR G W,THOMPSON B J.The correction of I and Q errors in a coherent proces-sor[J].IEEE Transactions on Aerospace and Elec-tronic Systems,1981,AES-17(1):131-137.
  • 3VITALI S,FRANCHI E,GNUDI A.RF I/Q down-conberter with gain/phase calibration[J].IEEE Trans-actions on Circuits and Systems II:Express Briefs,2007,54(4):367-371.
  • 4GUNST A W,KANT G W.Application of digital wideband mismatch calibration to an I/Q receiver[C]//Pro-ceedings of ISCAS 2002,IEEE International Symposiumon Circuits and Systems,Piscataway,NJ:IEEE,2002:484-487.
  • 5PUN K P,FRANCA J E,AZEREDO-LEME C.Wide-band digital correction of I and Q mismatch in quadtrtureradio receivers[C]//Proceedings of ISCAS 2000,IEEEInternational Symposium on Circuits and Systems,Piscat-away,NJ:IEEE,2000:661-664.
  • 6卢刚,吕幼新.一种新型宽带接收机I/Q通道失配的数字校正方法[J].信号处理,2006,22(5):690-693. 被引量：2

二级参考文献12

  • 1F. E. Churchill, G. W. Ogar and B. J. Thompson. The correction of I and Q errors in a coherent processor[ J]. IEEE Trans. On Aerospace and Electromc Systems, Jan 1981,AES-17 (1) :131-137.
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  • 4A. W. Gunst, G. W. Kant. Application of digital wide band mismatch calibration to an I/Q receiver[ C ]. ISCAS 2002 IEEE International Symposium on Circuits and Systems,26-29 May 2002,3:484-487.
  • 5Kong-pang PUN,Jose E. FRANCE and C. Azeredo-Leme.Wideband digital correction of I and Q mismatch in quadrature radio receivers [ C ]. The 2000 IEEE international Symposium on Circuits and Systems, 28-31 May 2000,5 :661-664.
  • 6E. Cetin,I. Kate and R. C. S. Morling. Adaptive digital receivers for analog front-end mismatch correction [ C ]. Vehicular Technology Conference, VTC 2001 Fall. IEEE VTS 54^th, Oct. 2001,4,7-11:2519-2522.
  • 7M. K. Nezami. Performance assessment of baseband algorithms for direct conversion tactical software defined receivers : I/Q imbalance correction, image rejection, DC removal,and channelization [ C ]. MILCOM 2002. Proceed-ings, Oct. 2002,1,7-10:369-376.
  • 8Tierney J, Rader C M, Gold B. A digital frequency synthesizer [ J ]. IEEE trans. Audio Electroacoust, 1971,19 ( 1 ) : 48 -57.
  • 9Matthew L Welborn, John C. Ankcorn. waveform synthesis for transmission of complex waveforms [ C ]// IEEE Radio and Wireless Conference, [ s. l. ] : IEEE Press, 1999:121 124.
  • 10Bruce J W, Stubberud P. An analysis of harmonic distortion and integral nonlinearity in digital to analog converters [ C ]. 42nd Midwest Symposium on Circuits and Systems, [ s. l. ] : IEEE Press, 2000,1:470 - 473.

共引文献5

同被引文献17

引证文献4

二级引证文献7

宁夏大学学报（自然科学版）
2012年 第1期

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