A predistortion technique for  RC ‐active biquadratic filters | Zendy

Goodman Ken | Zendy; Zurada Jacek | Zendy

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A predistortion technique for RC ‐active biquadratic filters

Author(s) -

Goodman Ken,

Zurada Jacek

Publication year - 1983

Publication title -

international journal of circuit theory and applications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.364

H-Index - 52

eISSN - 1097-007X

pISSN - 0098-9886

DOI - 10.1002/cta.4490110305

Subject(s) - predistortion , control theory (sociology) , amplifier , bandwidth (computing) , transfer function , mathematics , electronic engineering , computer science , engineering , telecommunications , electrical engineering , control (management) , artificial intelligence

A general method of forcing the transfer function of a biquadratic active filter to have poles/zeros in the desired locations is presented. Examples of the required calculations are shown. an example predistortion of a Thomas‐Tow section has been performed, and the resulting predistorted natural frequency and selectivity are presented graphically for a wide range of q ‐factors and amplifier gain‐bandwidth products. the technique has also been applied to the point‐by‐point predistortion of a digitally tuneable filter. the general predistortion method has been used to obtain estimates of frequency and selectivity errors in non‐predistorted filters. the expression for relative q errors agrees with previous high‐ q approximations of this error.

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