A Quadrature Oscillator Employing the Dominant Poles of the OTRAs

In this paper, the authors use two operational transresistance amplifiers (OTRAs) and two resistors to design a quadrature oscillator. The quadrature oscillator can produce two sinusoidal waves with 90° phase difference. The circuit can oscillate without external capacitor. We analyze the circuit employing the dominant pole of OTRA.