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CMOS analog baseband channel filter for direct a conversion WCDMA receiver

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5 Author(s)
Konfal, M. ; Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China ; Choy, C.S. ; Pun, K.P. ; Chan, C.F.
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The direct conversion receiver architecture is a good candidate to achieve wireless transceiver systems-on-chip, because, among other reasons, the channel selection filter is lowpass and can be implemented on-chip. This paper reports the design of an analog baseband filter chain for a direct conversion WCDMA receiver. The filter chain consists of a 5th order Chebyshev lowpass active RC filter with automatic frequency tuning, a programmable gain amplifier (PGA), and a DC servo feedback circuit to suppress the DC offset.

Published in:

ASIC, 2003. Proceedings. 5th International Conference on  (Volume:1 )

Date of Conference:

21-24 Oct. 2003