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100MHz, 6th order, leap-frog gm-C high Q bandpass filter and on-chip tuning scheme

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2 Author(s)
Moritz, J. ; Sch. of Electron., Commun. & Electr. Eng., Hertfordshire Univ., Hatfield ; Yichuang Sun

A 100MHz centre frequency, 10MHz bandwidth 6th order Butterworth bandpass filter using a leap-frog gm-C structure is described. Fully differential Nauta OTAs are used in the design, which include compensation of parasitic output resistance and feed-forward effects to obtain high Q. A mixed-signal, on-chip tuning system based on Dishal's method is described. The filter and tuning system have been simulated using Mosis 0.18mm BSIM 3v3 models and PSpice

Published in:

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Date of Conference:

21-24 May 2006