Análisis de estabilidad y ruido de fase en nuevas configuraciones de osciladores

Abstract

A self-oscillating quasi-periodic system has been designed, introducing a sinusoidal signal that is not harmonically related to the oscillation frequency. The stability of the periodic and quasi-periodic solution has been studied for different gate bias voltages versus the input power, showing different behaviours, identifying the subspace dimension in quasi-periodic regime. The system has been analyzed considering two sinusoidal generators. A class E amplifier has been designed with a nonlinear transmission line (NLTL), having a pulsed waveform at its output. With higher output amplitude, smaller duty cycle and better efficiency. The phase noise has also been studied using the phase sensitivity functions considering the noise in the NLTL diodes and in the transistor. A division has also been observed in the NLTL, obtaining a system division band versus the NLTL dimensions. An oscillator has been designed using different kind of multi-harmonic sources to synchronized the circuit. The stability has been analyzed versus the input frequency obtaining different bifurcations that take place in the system solution. A resonance has been observed int eh phase noise analysis when a small stability margin is considered.