Abstract
Three circuits each realizing second‐order all‐pass/notch filter transfer functions are reported. All circuits use grounded capacitors and are suitable for IC implementation. These circuits offer the advantages of high input impedance and low output impedance and are superior to all earlier realisations.
Highlights
The second generation current conveyor (CCII) has received considerable attention in the literature as it can realise various filters, oscillators and inductances superior to operational amplifier versions [1,2,3,4,5]
The circuit has high input impedance, low output impedance and uses grounded capacitors but suffers with the disadvantage of unequal R1; R2 and C1; C2 which makes it difficult to tune at a particular frequency
R 1⁄4 10 KO; C 1⁄4 0:01 mF R1 1⁄4 10 KO; a 1⁄4 2; 4: The CCII È circuit reported by Huertas [10] was used and in its realisation, operational amplifiers IC-741 were used
Summary
The second generation current conveyor (CCII) has received considerable attention in the literature as it can realise various filters, oscillators and inductances superior to operational amplifier versions [1,2,3,4,5]. It has been most successful in the realisation of a desired circuit with grounded capacitors which are preferred from the IC implementation point of view 1⁄26; 7. In this paper three circuits have been reported which have the above-mentioned features
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