This thesis investigates both theoretical and implementation-level aspects of switching-feedback control strategies for the development of voltage-controlled oscillators. Weuse a modified sliding-mode compensation scheme based on various norms of thesystem state to achieve amplitude control for wide-tuning range oscillators. Theproposed controller provides amplitude control at minimal cost in area and powerconsumption. Verification of our theory is achieved with the physical realization ofan amplitude controlled negative-Gm LC oscillator. A wide-tuning range RF ringoscillator is developed and simulated, showing the effectiveness of our methods forhigh speed oscillators. The resulting ring oscillator produces an amplitude controlledsinusoidal signal operating at frequencies ranging from 170 MHz to 2.1 GHz. Totalharmonic distortion is maintained below 0:8% for an oscillation amplitude of 2 Vppover the entire tuning range. Phase noise is measured as -105.6 dBc/Hz at 1.135 GHzwith a 1 MHz offset.
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