Publication detail

First-order transfer sections with reconnection-less electronically reconfigurable high-pass, all-pass and direct transfer character

ŠOTNER, R. JEŘÁBEK, J. HERENCSÁR, N. PROKOP, R. LAHIRI, A. DOSTÁL, T. VRBA, K.

Original Title

First-order transfer sections with reconnection-less electronically reconfigurable high-pass, all-pass and direct transfer character

Type

journal article in Web of Science

Language

English

Original Abstract

Presented research introduces active filtering circuits which allow change of the transfer type without necessity of reconnection of the input or output terminal that can be very useful for on-chip applications. Our attention is focused on simple first-order filters that allow high-pass response (HP), all-pass response (AP) and also direct transfer (DT) with constant magnitude and phase characteristics between two terminals (input and output) by adjusting of one controllable parameter (current gain B in our case). Useful modification of the well-known current follower transconductance amplifier (CFTA), the so-called Z-copy current-controlled current follower differential input transconductance amplifier (ZC-CCCFDITA) and adjustable current amplifier were utilized in these circuits. Interesting possibilities (crossing between several transfer functions) of presented circuits require different values of B to obtain desired transfer function that is very important for practice and selection of specific way of control. Requirements on value of this continuously controllable gain B differ among presented structures. Theory is supported by simulation and measurement results with behavioral models utilizing commercially available active elements and simulation results with active elements based on CMOS models.

Keywords

Active filters, electronic control, reconfiguration, reconnection-less multifunction, Z-copy current-controlled current follower differential input transconductance amplifier, ZC-CCCFDITA

Authors

ŠOTNER, R.; JEŘÁBEK, J.; HERENCSÁR, N.; PROKOP, R.; LAHIRI, A.; DOSTÁL, T.; VRBA, K.

Released

3. 3. 2016

Publisher

De Gruyter

Location

Bratislava

ISBN

1335-3632

Periodical

Journal of Electrical Engineering

Year of study

67

Number

1

State

Slovak Republic

Pages from

12

Pages to

20

Pages count

9

URL

http://iris.elf.stuba.sk/JEEEC/data/pdf/1_116-02.pdf

Full text in the Digital Library

http://hdl.handle.net/11012/203123

BibTex

@article{BUT122691,
  author="Roman {Šotner} and Jan {Jeřábek} and Norbert {Herencsár} and Roman {Prokop} and Abhirup {Lahiri} and Tomáš {Dostál} and Kamil {Vrba}",
  title="First-order transfer sections with reconnection-less electronically reconfigurable high-pass, all-pass and direct transfer character",
  journal="Journal of Electrical Engineering
",
  year="2016",
  volume="67",
  number="1",
  pages="12--20",
  doi="10.1515/jee-2016-0002",
  issn="1335-3632",
  url="http://iris.elf.stuba.sk/JEEEC/data/pdf/1_116-02.pdf"
}