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Complex low-pass filters

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3 Author(s)
Kiss, P. ; Dept. of Commun. Circuits Res., Agere Syst., Murray Hill, NJ, USA ; Prodanov, V. ; Glas, J.

Quadrature direct conversion (zero-IF) receivers 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.

Published in:

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on  (Volume:1 )

Date of Conference:

2002