Paper Info
Title
Synthesis of class-AB log-domain filters based on nonlinear transconductance
Abstract
In this paper a new generalized method for synthesis of class-AB current-mode log-domain filters, using nonlinear transconductance cell, is presented. The proposed nonlinear transconductance cell is designed by employing floating-gate MOS (FG-MOS) transistors that operate in weak inversion. It allows deriving current-mode nonlinear transconductance-capacitor (G"m-C) structure from its corresponding conventional transconductance-capacitor (g"m-C) in a systematic way. In this method, synthesis complexity is independent of system size, and thus high-order systems can be readily realized. In addition, it keeps the transconductance-capacitor topology invariant, leading to a very regular, general and simple topology. The filters are designed based on the transistors that are working in weak inversion and feature, low supply voltage, low-power consumption, immune to body effect and with low circuit complexity. For illustration of this new synthesis method, two different filters were designed and verified by simulation. The simulation results by HSPICE show the validity of the proposed technique.
Year
DOI
Venue
2010
10.1016/j.mejo.2010.03.002
Microelectronics Journal
Keywords
Field
DocType
proposed nonlinear transconductance cell,transconductance-capacitor topology invariant,new synthesis method,class-ab log-domain,class-ab current-mode log-domain filter,new generalized method,corresponding conventional transconductance-capacitor,weak inversion,nonlinear transconductance cell,current-mode nonlinear transconductance-capacitor,synthesis complexity,circuit complexity,filter
Nonlinear system,Circuit complexity,Inversion (meteorology),Voltage,Electronic engineering,Log domain,Invariant (mathematics),Engineering,Transconductance,Transistor
Journal
Volume
Issue
ISSN
41
5
Microelectronics Journal
Citations 
PageRank 
References 
0
0.34
3
Authors
1
Name
Order
Citations
PageRank
Ebrahim Farshidi1186.26