Skip to main content

Voltage Differencing Transconductance Amplifier-Based Quadrature Oscillator and Biquadratic Filter Realization with All Grounded Passive Elements

Abstract

The work realizes the sinusoidal quadrature oscillator and biquadratic filter with the same configuration using merely two voltage differencing transconductance amplifiers (VDTAs) as active devices and one grounded resistor and two grounded capacitor as passive elements. Performing the quadrature oscillator, the realized circuit is capable of producing two quadrature voltage outputs with almost equal amplitudes, and an independent electronic control of oscillation condition and oscillation frequency. Operating in voltage-mode biquadratic filter, the circuit can simultaneously generate the bandpass and lowpass filtering functions without any matching constraints. The natural angular frequency and the quality factor of the filter are independently and electronically adjustable. The effects of the VDTA non-idealities are also investigated in detail. Simulation results with TSMC 0.25 μm CMOS technology validate both working functions of the proposed circuit.

This is a preview of subscription content, access via your institution.

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.
Fig. 7.
Fig. 8.
Fig. 9.
Fig. 10.

REFERENCES

  1. 1

    D. Biolek, R. Senani, V. Biolkova, and Z. Kolka, Radioengineering 17, 15 (2008).

    Google Scholar 

  2. 2

    N. Herencsar, R. Sotner, J. Koton, J. Misurec, and K. Vrba, Elektron. &Elektrotech. 19, 87 (2013).

    Google Scholar 

  3. 3

    D. Prasad, M. Srivastava, and D. R. Bhaskar, Circuits Syst. 4, 169 (2014).

    Article  Google Scholar 

  4. 4

    W. Tangsrirat, Indian J. Pure & Appl. Phys. 55, 254 (2017).

    Google Scholar 

  5. 5

    A. Yesil, F. Kacar, and H. Kuntman, Radioengineering 20, 632 (2011).

    Google Scholar 

  6. 6

    J. Satansup, T. Pukkalanun, and W. Tangsrirat, Circuits Syst. Signal Process. 32, 945 (2013).

    Article  Google Scholar 

  7. 7

    A. Yesil and F. Kacar, Radioengineering 22, 1016 (2013).

    Google Scholar 

  8. 8

    D. Prasad, D. R. Bhaskar, and M. Srivastava, Indian J. Pure & Appl. Phys. 51, 864 (2013).

    Google Scholar 

  9. 9

    W. Mekhum and W. Jaikla, Theor. Appl. Electric. Eng. 11, 494 (2013).

    Google Scholar 

  10. 10

    S. Maneewan, N. Udorn, D. Duangmalai, P. Silpan, and W. Jaikla, Theor. Appl. Electric. Eng. 12, 40 (2014).

    Google Scholar 

  11. 11

    J. Jerabek, R. Sotner, and K. Vrba, Rev. Roum. Sci. Tech.–Electrotech. et Energ. 59, 163 (2014).

    Google Scholar 

  12. 12

    D. Prasad, D. R. Bhaskar, and M. Srivastava, Circuits Syst. 4, 32 (2014).

    Google Scholar 

  13. 13

    J. Satansup and W. Tangsrirat, Microelectron. J. 45, 613 (2014).

    Article  Google Scholar 

  14. 14

    D. Prasad and D. R. Bhaskar, ISRN Electron. 2012, ID 382560 (2012).

Download references

ACKNOWLEDGMENTS

This work was supported by King Mongkut’s Institute of Technology Ladkrabang Research Fund [grant number KREF116001]. The author is also immensely grateful to Ms. Pitchayanin Moonmuang for assistance with the circuit simulation, who moderated this paper and in that line improved the manuscript significantly.

Author information

Affiliations

Authors

Corresponding author

Correspondence to W. Tangsrirat.

Additional information

The article is published in the original.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Tangsrirat, W. Voltage Differencing Transconductance Amplifier-Based Quadrature Oscillator and Biquadratic Filter Realization with All Grounded Passive Elements. J. Commun. Technol. Electron. 63, 1418–1423 (2018). https://doi.org/10.1134/S1064226918120239

Download citation

Keywords:

  • voltage differencing transconductance amplifier (VDTA)
  • quadrature oscillator (QO)
  • active filter
  • biquadratic filter
  • voltage-mode circuits