DocumentCode
1641708
Title
Reducing spread resistance in high Q state variable filters
Author
Báez-lópez, David ; Guillermo, E.F.V. ; Silva-Martínez, José
Author_Institution
Univ. de Las Americas, Puebla, Mexico
Volume
1
fYear
1998
Firstpage
72
Abstract
In this paper we propose a method to reduce the resistance spread in the high Q realizations of the KHN and Tow-Thomas state variable filters. This resistance spread is reduced by noting that a single resistor controls the value of the pole Q, thus by substituting this resistor by a T of resistors it is possible to reduce the spread by up to a factor of 10. Simulations confirm the proposed technique
Keywords
Q-factor; biquadratic filters; poles and zeros; transfer functions; KHN filters; Tow-Thomas filters; filter biquads; high Q realizations; pole Q; spread resistance; state variable filters; Active filters; Band pass filters; Dynamic range; Frequency; Low pass filters; Operational amplifiers; Optical filters; Passive filters; Resistors; Transfer functions;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location
Monterey, CA
Print_ISBN
0-7803-4455-3
Type
conf
DOI
10.1109/ISCAS.1998.704183
Filename
704183
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