Design Optimization for High-Volume, Low-Cost 9x7 OCXO

Abstract

This paper reports the development and optimization of a 9x7mm OCXO using an AT strip crystal mounted within an isothermal envelope to minimize the effects of mechanical stress on the crystal blank. This concept can be realized by using Finite Element Method (FEM) as a design aid to achieve low and symmetrical thermal gradients across the quartz blank. As a result, it yields stability suitable for high-volume, low-cost telecommunication applications.