High Frequency and Low Frequency Noiseudin Microwave Oscillators

摘要

This paper is a summary of our research inudthe field of noise in oscillators. An original approach hasudbeen developed to check the validity of the theoreticaludmodels and also, to investigate some techniques of noiseudreduction. It is based on open loop (or residual) phase noiseudmeasurements of microwave transistors. It allows us toudidentify the different noise sources contributing to the phaseudnoise in a high frequency oscillator. The oscillator phaseudnoise can then be simulated and optimised.