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http://dx.doi.org/10.7471/ikeee.2011.15.1.057

A Tunable Band-Pass Filter for Multi Bio-Signal Detection  

Jeong, Byeong-Ho (Dept. of Electronics Engineering, SeoKyeong University)
Lim, Shin-Il (Dept. of Electronics Engineering, SeoKyeong University)
Woo, Deok-Ha (Korea Institute of Science and Technology)
Publication Information
Journal of IKEEE / v.15, no.1, 2011 , pp. 57-63 More about this Journal
Abstract
This paper presents a tunable band pass filter (BPF) for multi bio-signal detection. The bandwidth can be controlled by the bias current of transconductance (gm), while conventional BPF exploited switchable capacitor array for band selection. With this design technique, the die area of proposed BPF reduced to at least one tenth the area of conventional design. The simulation results show the high cut-off frequency tuning range of from 100Hz to 1Khz. The circuit was implemented with a 0.18um CMOS standard technology. Total current consumption is 1uA at the supply voltage of 1V with sub-threshold design technique.
Keywords
band-pass filter; high cut-off frequency; sub-threshold design; gm; bio-signal detection;
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