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A CMOS Elliptic Switched-Current Filter Using Bilinear Implementation

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2 Author(s)
Ying Long ; Coll. of Electr. & Inf. Eng., Hunan Univ., Changsha, China ; He, Yigang

A CMOS elliptic switched-current (SI) ladder filter, employing bilinear SI integrator, has been proposed. The filter is based on the bilinear S-*Z transformation ,which results in a simple circuit realization using switched-current. Cutoff frequency of the filter is 1 MHz and with bilinear implementation, we achieve 1 db passband ripple and stopband attenuation greater than 30 db. A 5th-order SI filter example is given in this paper. ASIZ simulation results for frequency response verity the technical requirement.

Published in:

Computational Intelligence and Software Engineering, 2009. CiSE 2009. International Conference on

Date of Conference:

11-13 Dec. 2009