The effects of mismatch in Gm-C polyphase filters

Author

Mahattanakul, Jirayuth

Author_Institution

Mahanakorn Univ. of Technol., Bangkok, Thailand

Volume

52

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

410

Lastpage

414

Abstract

Based upon state-space representation, the effects of component mismatch in a complex (or polyphase) Gm-C filter are examined. It was found that the effects of component mismatch in this kind of filter are twofold. The first is that it will distort the filter´s frequency response. The second and probably more severe consequence is the crosstalk in which the unwanted image signal is leaked into the passband frequencies, interfering with the wanted signal of the selected channel. A simulation method of a polyphase filter is also presented, and simulation results based on Monte Carlo analysis are given.

Keywords

Butterworth filters; Monte Carlo methods; analogue integrated circuits; band-pass filters; crosstalk; frequency response; state-space methods; Gm-C polyphase filters; Monte Carlo analysis; component mismatch; crosstalk; fifth-order complex Butterworth filter; frequency response; passband filters; state-space representation; Capacitors; Crosstalk; Equations; Frequency domain analysis; Joining processes; Matched filters; Mirrors; Topology; Transconductors; Analog integrated circuits; circuit theory; filter theory; state-space methods; transceivers;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2005.850426

Filename

1468341