Abstract:
The novel mathematical bandpass-biquad evaluation model based on poles/zeroes location for computer-based compensation of an OTA-C filter is proposed. In proving of model...Show MoreMetadata
Abstract:
The novel mathematical bandpass-biquad evaluation model based on poles/zeroes location for computer-based compensation of an OTA-C filter is proposed. In proving of model's validation, the SA algorithm is utilized for searching a compensated circuit's parameters of the most compact version of bandpass OTA-based TT biquad, which is not suitable for classical compensation methods of OTA's nonidealities. A CMOS OTA with non-linear transconductance and low output resistance is chosen as the based OTA for the tested circuit. Through experiments, the proposed pole-zero-based model is proved very suitable for computer-based evaluation of bandpass biquad in compensation process. The comparing experiment is also conducted to measure the performances of the proposed and the existed model. The results provide a conclusion that the proposed model is superior in the requirement of computing power, and the evaluation ability for compensation process.
Published in: 2007 IEEE Workshop on Signal Processing Systems
Date of Conference: 17-19 October 2007
Date Added to IEEE Xplore: 21 November 2007
ISBN Information: