Publication result detail

Study of Practical Problems in Two-Loop CCTA Based Biquad: Finite Attenuations in Stop Bands

JEŘÁBEK, J.; ŠOTNER, R.; KINCL, Z.; DOSTÁL, T.; VRBA, K.

Original Title

Study of Practical Problems in Two-Loop CCTA Based Biquad: Finite Attenuations in Stop Bands

English Title

Study of Practical Problems in Two-Loop CCTA Based Biquad: Finite Attenuations in Stop Bands

Type

Paper in proceedings (conference paper)

Original Abstract

Quite neglected and underlying problem of modern active functional blocks is presented and demonstrated in this contribution on a current-mode active filter. The discussed problem is an undesirable transfer in stop band of multifunctional frequency filters. It is caused by several occasions related to small-signal parameters of active elements (impedance levels) in the circuit. In some cases it leads to parasitic feedback and undesirable transfers in circuit. Problems are discussed on example with KHN-type filter where quite novel active element known as Current Conveyor Transconductance Amplifier (CCTA) is used.

English abstract

Quite neglected and underlying problem of modern active functional blocks is presented and demonstrated in this contribution on a current-mode active filter. The discussed problem is an undesirable transfer in stop band of multifunctional frequency filters. It is caused by several occasions related to small-signal parameters of active elements (impedance levels) in the circuit. In some cases it leads to parasitic feedback and undesirable transfers in circuit. Problems are discussed on example with KHN-type filter where quite novel active element known as Current Conveyor Transconductance Amplifier (CCTA) is used.

Keywords

CCTA, stop band attenuation, non-zero input impedance, finite output impedance

Key words in English

CCTA, stop band attenuation, non-zero input impedance, finite output impedance

Authors

JEŘÁBEK, J.; ŠOTNER, R.; KINCL, Z.; DOSTÁL, T.; VRBA, K.

RIV year

2014

Released

28.11.2013

Publisher

The Chamber of Electrical Engineers Bursa Branch (EMO)

ISBN

978-605-01-0504-9

Book

Proceeding of the 8th International Conference on Electrical and Electronics Engineering

Pages from

40

Pages to

44

Pages count

5

BibTex

@inproceedings{BUT102988,
  author="Jan {Jeřábek} and Roman {Šotner} and Zdeněk {Kincl} and Tomáš {Dostál} and Kamil {Vrba}",
  title="Study of Practical Problems in Two-Loop CCTA Based Biquad: Finite Attenuations in Stop Bands",
  booktitle="Proceeding of the 8th International Conference on Electrical and Electronics Engineering",
  year="2013",
  pages="40--44",
  publisher="The Chamber of Electrical Engineers Bursa Branch (EMO)",
  isbn="978-605-01-0504-9"
}