Realization of Universal Active Complex Filter Using CCIIs and CFCCIIs

Xiaoxing ZHANG  Xiayu NI  Masahiro IWAHASHI  Noriyoshi KAMBAYASHI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E81-A    No.2    pp.244-251
Publication Date: 1998/02/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques in the Digital-Oriented Era)
active filter,  current conveyor,  current follower,  complex filter,  sensitivity,  

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In this paper, two universal building blocks for complex filter using CCIIs, CFCCIIs, grounded resistors and grounded capacitors are presented. These can be used to realize various complex bandpass filters with arbitrary order. The paper shows that the response error of the proposed circuit caused by nonideality of active components is more easily compensated than that of the conventional one employing op-amps, and that the sensitivities for all components are relatively small. Experimental results are used for verifying the validity of the proposed circuits.