A Simplified Model for Passive-Switched-Capacitor Filters With Complex Poles

This brief demonstrates a method to realize complex conjugate poles using passive-switched-capacitor networks. In addition, a simplified continuous-time model will be introduced so that accurate transfer functions and output noise can be obtained without the need for complicated charge-balance equat...

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Veröffentlicht in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2016-06, Vol.63 (6), p.513-517
Hauptverfasser: Lulec, Sevil Zeynep, Johns, David A., Liscidini, Antonio
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creator Lulec, Sevil Zeynep
Johns, David A.
Liscidini, Antonio
description This brief demonstrates a method to realize complex conjugate poles using passive-switched-capacitor networks. In addition, a simplified continuous-time model will be introduced so that accurate transfer functions and output noise can be obtained without the need for complicated charge-balance equations and thereby allow a better intuitive understanding of these structures. The developed theory is demonstrated through the design of a second-order low-pass Butterworth biquad with applications intended in the design of wireless RF receivers.
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subjects Analytical models
biquad
Capacitors
Circuits
Conjugates
Design engineering
discrete time IIR filter
Integrated circuit modeling
Mathematical analysis
Mathematical model
Networks
Noise
passive switched capacitor
Poles
Receivers
Resistors
Switches
Transfer functions
title A Simplified Model for Passive-Switched-Capacitor Filters With Complex Poles
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