Published in Proceedings of the 2002 IEEE International Symposium on Circuits and Systems: Phoenix, AZ, Volume 1, May 26, 2002, pages 525-528.
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NOTE: At the time of publication, the author Vladimir Prodanov was not yet affiliated with Cal Poly.
Quadrature zero-if transceivers suffer from the imbalance of the I and Q paths. By using a complex low-pass filter topology instead of a conventional pair of real low-pass filters, this imperfection can be reduced. Both analytical and numerical analysis show that the proposed technique is significantly more robust to circuit imperfections than the traditional architecture.
Electrical and Computer Engineering