I-Q imbalance correction in time and frequency domains with application to pulse doppler radar

Digital In-phase(I) and Quadrature phase(Q) imbalance correction schemes are presented for improving the balance between I & Q signals by rejecting the image frequencies due to imbalance. The imbalance errors in the analog and digital demodulation schemes are highlighted. Simplified correction s...

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Bibliographic Details
Published inSadhana (Bangalore) Vol. 23; no. 1; pp. 93 - 102
Main Authors Sivannarayana, N, Veerabhadra Rao, K
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Nature B.V 01.02.1998
Subjects
Communications systems
Demodulation
Doppler radar
Frequency domain analysis
Pulse Doppler radar
Quadratures
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Summary:Digital In-phase(I) and Quadrature phase(Q) imbalance correction schemes are presented for improving the balance between I & Q signals by rejecting the image frequencies due to imbalance. The imbalance errors in the analog and digital demodulation schemes are highlighted. Simplified correction schemes are presented for time and frequency domain imbalances. These correction schemes are useful in radar and communication systems. In this paper, a digital I-Q scheme is also presented for a pulse Doppler radar, along with hardware configuration for implementation.
ISSN:0256-2499
0973-7677
DOI:10.1007/BF02747626