Title :
A CMOS Elliptic Switched-Current Filter Using Bilinear Implementation
Author :
Long, Ying ; He, Yigang
Author_Institution :
Coll. of Electr. & Inf. Eng., Hunan Univ., Changsha, China
Abstract :
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.
Keywords :
CMOS integrated circuits; filters; switched current circuits; CMOS elliptic switched-current ladder filter; circuit realization; complementary metal-oxide-semiconductor; cutoff frequency; frequency response; stopband attenuation; Capacitors; Communication switching; Educational institutions; Information filtering; Information filters; Passband; Passive circuits; Passive filters; Prototypes; Switching circuits;
Conference_Titel :
Computational Intelligence and Software Engineering, 2009. CiSE 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4507-3
Electronic_ISBN :
978-1-4244-4507-3
DOI :
10.1109/CISE.2009.5365686
