State-space synthesis of oscillators based on the MOSFET square law

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State-space synthesis of oscillators based on the MOSFET square law

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Published

A state-space synthesis of oscillators based on the large-signal square-law characteristic of a MOSFET in saturation is presented. The approach is an extension of the recently proposed MOSFET square-law filter synthesis methodology. Simulation results demonstrate that oscillation at megahertz frequencies is attainable. The oscillation frequency is also electronically tunable. The total harmonic distortion (THD) is simulated as 0.1–3% for output voltages between 80 mV and 1.1 V peak-to-peak, respectively. This oscillation amplitude can be controlled by an additional CMOS limiter.

Inspec keywords: oscillators; state-space methods; harmonic distortion; MOSFET circuits; nonlinear network analysis

Other keywords: filter synthesis methodology; total harmonic distortion; CMOS limiter; large-signal square-law characteristic; 80 mV to 1.1 V; output voltages; MOSFET square law; oscillation frequency; MOSFET saturation; state-space synthesis

Subjects: Oscillators; General circuit analysis and synthesis methods; Nonlinear network analysis and design

References

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