New Approach of deriving Third-Order Quadrature Sinusoidal Oscillators

Authors

  • Ajishek Raj National Institute of Technology Patna

DOI:

https://doi.org/10.29292/jics.v18i3.792

Keywords:

Quadrature oscillator, Voltage mode

Abstract

Numerous approaches/methods have been employed in the past to derive various third-order sinusoidal oscillators (TOSOs). In this communication, a new simple approach for realizing TOQSO is presented, utilizing a second order inverse high-pass active filter with a cascade connection of traditional lossless integrator. The proposed approach can provide quadrature voltage outputs by leveraging the availability of lossless integrator. It is demonstrated that the proposed approach has the potential to generate various TOQSOs, as exemplified by the voltage-mode TOQSO based on current feedback operational amplifiers (CFOAs). The oscillation condition (CO) and frequency (FO) of the derived oscillator can be independently controlled. Experimental results utilizing AD844 CFOA ICs have been included to validate the theoretical propositions.

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Published

2023-12-28