Design and manufacturing improvement of a resonator cavity for ultra-low phase noise oscillator

Abstract

This paper focuses on the design and manufacturing optimization of ultra-low phase noise oscillator resonators for remote sensing satellites. These oscillators require high frequency stability, which directly depends on the Q value of the resonator. To address the challenges posed by extreme space environments, such as thermal fluctuations and radiation exposure, this study used a triangulation method, combining expert interviews, literature reviews, and DFMA analysis based on SolidWorks to perform multi-dimensional analysis.

Research explores material selection, geometric tolerances, and coating options to improve performance and manufacturability. The optimized design prioritizes high conductivity, low surface roughness, and mechanical stability under space conditions. Research results show that using 6061-T6 aluminium with silver and gold coatings can achieve a balance between electrical performance and structural reliability, thereby effectively increasing Q value and reducing phase noise.