Title :
The effects of mismatch in Gm-C polyphase filters
Author :
Mahattanakul, Jirayuth
Author_Institution :
Mahanakorn Univ. of Technol., Bangkok, Thailand
fDate :
7/1/2005 12:00:00 AM
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;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2005.850426
