ANALYSIS AND DESIGN OF A MULTIPLE OTA-BASED OTA-C ACTIVE LOW-PASS FILTER

Authors: Sanjay Desai Meenakshi

DOI: 10.5281/zenodo.17414937

Published: October 2025

Abstract

<p><em>-C filters have the advantage of tuning the floating inductor resulting in enhancement of gain and increase in cut-off frequency with increase in bias current. Different cases of tuning trans conductance gm1, gm1, gm. , and gm2&nbsp; by changing the bias currents of multiple OTA ‘s&nbsp; are studied and results are discussed. The only one method of setting of gm1 gm1 greater than gmgm2&nbsp;&nbsp; is an innovative in changing the cut off frequency as we have flexible tuning Tran’s conductances of gm1, gm1, and gm.&nbsp; And gm2. Results are consistent and are encouraging in respect of tuning of Trans conductance with bias current under the condition of gm1 gm1 greater than gmgm2.&nbsp; However an OTA-C active filter other than the studied criteria has the limitations in designing of filters</em></p>

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DOI: 10.5281/zenodo.17414937

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