Publication detail

Universal Current-Mode Gm-C Biquad

BIOLEK, D. BIOLKOVÁ, V. KOLKA, Z.

Original Title

Universal Current-Mode Gm-C Biquad

English Title

Universal Current-Mode Gm-C Biquad

Type

conference paper

Language

en

Original Abstract

A universal current-mode biquad is described which is designed on the basis of well-known KHN (Kerwin, Huelsman, Newcomb) voltage-mode filter. In its most general form, the circuit consists of five operational transconductance amplifiers (OTAs) and of two grounded capacitors. The filter provides simultaneously three current outputs of HP, BP, and LP types into independent loads. The quality factor can be adjusted electronically independently on the natural frequency. Less rigorous rules of controlling the filter parameters can imply a reduction of number of OTAs to three or even two. The principle is verified by Spice simulation on the level of a CMOS structure of OTAs.

English abstract

A universal current-mode biquad is described which is designed on the basis of well-known KHN (Kerwin, Huelsman, Newcomb) voltage-mode filter. In its most general form, the circuit consists of five operational transconductance amplifiers (OTAs) and of two grounded capacitors. The filter provides simultaneously three current outputs of HP, BP, and LP types into independent loads. The quality factor can be adjusted electronically independently on the natural frequency. Less rigorous rules of controlling the filter parameters can imply a reduction of number of OTAs to three or even two. The principle is verified by Spice simulation on the level of a CMOS structure of OTAs.

Keywords

Biquad, Current Mode, Gm-C filter

RIV year

2008

Released

09.05.2008

Publisher

IEEE

Location

Praha

ISBN

978-1-4244-2087-2

Book

Proceedings of the 18th International Conference Radioelektronika 2008

Edition

1

Edition number

1

Pages from

137

Pages to

139

Pages count

3

BibTex


@inproceedings{BUT26495,
  author="Dalibor {Biolek} and Viera {Biolková} and Zdeněk {Kolka}",
  title="Universal Current-Mode Gm-C Biquad",
  annote="A universal current-mode biquad is described which is designed on the basis of well-known KHN (Kerwin, Huelsman, Newcomb) voltage-mode filter. In its most general form, the circuit consists of five operational transconductance amplifiers (OTAs) and of two grounded capacitors. The filter provides simultaneously three current outputs of HP, BP, and LP types into independent loads. The quality factor can be adjusted electronically independently on the natural frequency. Less rigorous rules of controlling the filter parameters can imply a reduction of number of OTAs to three or even two. The principle is verified by Spice simulation on the level of a CMOS structure of OTAs.",
  address="IEEE",
  booktitle="Proceedings of the 18th International Conference Radioelektronika 2008",
  chapter="26495",
  edition="1",
  howpublished="electronic, physical medium",
  institution="IEEE",
  year="2008",
  month="may",
  pages="137--139",
  publisher="IEEE",
  type="conference paper"
}