@article{ajeee2014261,
author={{Arif, Bilal and Ismail, Mohd. Usama and Imran, Ale},
title={DVCC Based K.H.N. Biquadratic Analog Filter with Digitally Controlled Variations},
journal={American Journal of Electrical and Electronic Engineering},
volume={2},
number={6},
pages={159--164},
year={2014},
url={http://pubs.sciepub.com/ajeee/2/6/1},
abstract={In this paper, a digitally controlled single input multi output current-mode K.H.N. Biquad Filter is presented. The filter circuit is composed of three DVCCs together with four grounded resistors and two grounded capacitors. The digital control is incorporated using a current-summing network (CSN). Tuning of resonant frequency is carried out by 3¨Cbit digital control word. Block by block replacement has been done to observe the change in the relationship between resonant frequency of the band-pass filter with the control word. The filter circuit showed three different variations when the DVCC blocks were replaced (one by one) with 3-bit DC-DVCC blocks. PSPICE simulations using TSMC 0.25 micron CMOS technology have been performed to validate the theoretical results.},
doi={10.12691/ajeee-2-6-1}
publisher={Science and Education Publishing}
}