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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(12) [December 2012] >
| Title: | Multiple-input-multiple-output log-domain universal biquad filter |
| Authors: | Shah, N A
Khanday, F A |
| Keywords: | Analog circuits
Circuit synthesis
Filters
Integrated circuits
Signal Processing
Continuous-time filters
Multifunction active filters
Companding filters
Log-Domain filters |
| Issue Date: | Dec-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A simple log-domain
technique based Multiple-Input-Multiple-Output (MIMO) universal biquad
realizing simultaneously all the standard filtering functions viz; Lowpass
(LP), Highpass (HP), Bandpass (BP), Bandstop (BS), and Allpass (AP) is
presented in this paper. The biquad being designed by log-domain technique
offers all its advantages. The circuit besides permitting independent
electronic adjustment of pole frequency (ωo) and the Quality factor (Q) is: simultaneously Single-Input-Multiple-Output (SIMO) and
Multiple-Input-Single-Output (MISO), free from matching conditions, capable of
absorbing the shunt parasitic capacitances, amenable for monolithic
integration, composed of merely a few exponential transconductor cells and
grounded elements. The other features of circuit are its low sensitivity and
good linearity. Simulated and experimental results are obtained to prove the
theoretical analyses.
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| Page(s): | 928-934 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(12) [December 2012]
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