DocumentCode :
953827
Title :
Efficient design of ladder-based transconductor-capacitor filters and equalisers
Author :
Yue, Lu ; Greer, N.P.J. ; Sewell, J.I.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Volume :
142
Issue :
4
fYear :
1995
fDate :
8/1/1995 12:00:00 AM
Firstpage :
263
Lastpage :
272
Abstract :
The paper outlines matrix methods for ladder-based transconductor-capacitor filter and equaliser design and a theory for the canonical realisation of ladder-based transconductor-C filter is presented. A filter and equaliser compiler based on the proposed method is described. As an example, a fifth-order elliptic lowpass filter and a sixth-order group delay equaliser have been designed. It is shown that the order of the equaliser can be reduced by application of special techniques for the approximation of the filter transfer function. A comparison of sensitivity between a cascade of biquadratic stages and the ladder-based realisation is given. Lower sensitivities to component tolerance for both filter and equaliser are displayed by the ladder-based design. Test results from the fabricated filter and equaliser are also given
Keywords :
active filters; delay circuits; elliptic filters; equalisers; ladder filters; low-pass filters; network synthesis; transfer functions; biquadratic stages; canonical realisation; cascade; compiler; component tolerance sensitivity; equalisers; fifth-order elliptic lowpass filter; ladder-based design; matrix methods; sixth-order group delay equaliser; transconductor-capacitor filters; transfer function;
fLanguage :
English
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
Publisher :
iet
ISSN :
1350-2409
Type :
jour
DOI :
10.1049/ip-cds:19951947
Filename :
465186
Link To Document :
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