High speed and silicon-saving adaptive tuning system for high frequency Gm-C filters

Authors:
Nematollah Ezzati;Sohrab Abdollahzadeh
Affiliations:
Electrical Engineering Department, Urmia University of Technology, Urmia, Iran;Industrial Engineering Department, Urmia University of Technology, Urmia, Iran
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2010

Citing 1
Cited 1

RF microelectronics

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A low power tunable Gm---C filter based on double CMOS inverters in 0.35 μm

Analog Integrated Circuits and Signal Processing

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Abstract

In this paper, a novel adaptive tuning system used in Gm-C continuous time (CT) filters has been presented. The novelty of this method is the generation of quasi-gradient functions for the adaptive algorithm. By this method we have implemented the fully adaptive tuning algorithm on chip, and received more than 95% precision for the all characteristics of Gm-C filter. All the circuit level simulations and prototype fabrication have been done using 0.6 μ CMOS technology of AMS.