Supplementary CCII based second-order universal filter and quadrature oscillators

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Yücel F., Yüce E.

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, vol.118, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 118
  • Publication Date: 2020
  • Doi Number: 10.1016/j.aeue.2020.153138
  • Journal Name: AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Compendex, Computer & Applied Sciences, INSPEC
  • Keywords: Voltage-mode, Universal filter, Quadrature oscillator, Tunability, VOLTAGE-MODE FILTER, SINUSOIDAL OSCILLATORS, BIQUADRATIC-FILTERS, CURRENT CONVEYORS, 3 INPUTS, GROUNDED CAPACITORS, SINGLE-INPUT, GENERATION, FREQUENCY
  • Akdeniz University Affiliated: Yes

Abstract

A voltage-mode universal biquadratic filter and two quadrature oscillators (QOs) based on CCIIs namely second-generation current conveyors are proposed. The proposed filter with one output and three inputs consists of two CCIIs, three resistors and two capacitors. It can provide all the standard second-order universal filter transfer functions with appropriate choice of input voltages. It also has the orthogonal control of the quality factor and angular resonance frequency. However, a resistive matching condition is required for the all-pass responses. The first proposed QO includes two CCIIs, three resistors and two grounded capacitors while the second one is composed of three plus-type CCIIs, three resistors and two grounded capacitors. By a single grounded resistor, oscillation frequencies of both of the proposed QOs can be controlled orthogonally. Furthermore, in order to confirm the theory, a lot of simulation and experimental results are given. (C) 2020 Elsevier GmbH. All rights reserved.