New realizations of OTRA based sinusoidal oscillator

Two new topologies of OTRA based sinusoidal oscillators are presented. The first topology makes use of lossless integrators. whereas the second topology is designed using a second order all pass section. The proposed topologies can be made fully integrated by implementing the resistors using matched transistors operating in linear region, which facilitates electronic tuning of oscillation frequency. The non-ideality analysis of the circuits is also given and for high frequency applications self compensation can be used. Workability of the proposed oscillators is verified through PSPICE simulations using 0.5μm AGILENT CMOS process parameters. The total harmonic distortion (THD) for both the designs is found to be quite low.