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High‐frequency limitations of rc‐active filters containing simulated‐l and fdnr elements
Author(s) -
Bruton L. T.,
Haase A. B.
Publication year - 1974
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.4490020208
Subject(s) - lossless compression , immittance , inductance , transfer function , converters , amplifier , bandwidth (computing) , electronic engineering , band pass filter , active filter , operational amplifier , control theory (sociology) , mathematics , computer science , engineering , electrical engineering , algorithm , telecommunications , data compression , voltage , artificial intelligence , control (management)
High quality RC‐active filters may be realized using inductance‐simulation or FDNR‐synthesis techniques where generalized immittance converters (GIC) are the basic active two ports of the synthesis. The deterioration of the magnitude transfer function | T ( jω )| at high frequencies is determined in terms of the gain bandwidth products B of the operational amplifiers employed within the GIC's. The basis of the method is to extend Blostein's lossless LC‐twoport tolerance by determining the magnitude and phase errors of the simulated‐inductance or FDNR elements.