An integrable temperature-insensitive gm-RC quadrature oscillator

A novel g^m-RC quadrature oscillator using operational transconductance amplifiers (OTAs) and grounded passive elements is proposed. The circuit provides two quadrature outputs of equal magnitude and the oscillation frequency is insensitive to temperature. The oscillation frequency can be linearly and electronically controlled without affecting the condition of oscillation. The active ω0-sensitivity has been shown to be small. Experimental and simulation results that demonstrate the performance of the proposed oscillator are also included.