An approach to the correction of I and Q imbalance in time domain

Author

Heqiang, Mu ; Peng Yingning

Author_Institution

Beijing Inst. of Radio Meas., China

fYear

2001

fDate

2001

Firstpage

1006

Lastpage

1010

Abstract

An approach to the correction of I and Q imbalance in the time domain is discussed. The correction coefficients are resolved in the time domain by injecting a standard sinusoidal test signal. Compared with the methods developed by Li (see Radar Engineering. The Sea Press, Beijing, 1999) and Churchill (1981), who obtained the correction coefficients in the frequency domain by the discrete Fourier transform (DFT), our method decreases the large amount of calculations. The formulas of residual deviations after correction, which depend on the ratio of signal energy- to-noise power density (2E / N₀), are also discussed

Keywords

discrete Fourier transforms; radar signal processing; time-domain analysis; DFT; I/Q imbalance correction; correction coefficients; discrete Fourier transform; frequency domain; radar signals; residual deviations; signal energy-to-noise power density ratio; standard sinusoidal test signal; time domain; Calibration; Discrete Fourier transforms; Frequency domain analysis; Low pass filters; Q measurement; Radar clutter; Signal resolution; Signal to noise ratio; Testing; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2001 CIE International Conference on, Proceedings

Conference_Location

Beijing

Print_ISBN

0-7803-7000-7

Type

conf

DOI

10.1109/ICR.2001.984880

Filename

984880