Reconnection-less OTA-based Biquad Filter with Electronically Reconfigurable Transfers

Authors

  • Roman Sotner Brno University of Technology
  • Jiri Petrzela Brno University of Technology
  • Jan Jerabek Brno University of Technology
  • Tomas Dostal College of Polytechnics Jihlava

DOI:

https://doi.org/10.5755/j01.eee.21.3.10205

Abstract

This paper deals with operational transconductance amplifiers (OTAs) -based active voltage-mode biquad filter with electronically reconfigurable transfer functions. Due to utilization of the very favourable active devices, this design is ready for immediate CMOS design. Presented filtering solution contains four active elements where each of them is directly used for reconnection-less change of transfer function or modification including electronic control of quality factor and tuning. The filter offers availability of all-pass, high-pass, band-pass, band-reject transfer response and special transfers as high-pass with zero and low-pass with zero. Measurement results based on utilization of diamond transistors confirmed expected behaviour of the circuit.

DOI: http://dx.doi.org/10.5755/j01.eee.21.3.10205

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Published

2015-06-04

How to Cite

Sotner, R., Petrzela, J., Jerabek, J., & Dostal, T. (2015). Reconnection-less OTA-based Biquad Filter with Electronically Reconfigurable Transfers. Elektronika Ir Elektrotechnika, 21(3), 33-37. https://doi.org/10.5755/j01.eee.21.3.10205

Issue

Vol. 21 No. 3 (2015)

Section

ELECTRONICS

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