Title :
Manufacturing optimization for improved AT crystal aging
Author :
Robinson, Brent ; Vittorini, L.D.
Author_Institution :
Rakon Ltd., Auckland, New Zealand
Abstract :
The military focus on affordable “smart weapons” using GPS and the ever-increasing demand for smaller, more accurate and lower cost frequency standards has put new emphasis on the stability of the TCXO. A study intended to optimize some of the critical process stages of quartz crystal production that may affect aging performance has been investigated. A new type of oscillator configuration to meet the more stringent temperature performance requirements is also presented
Keywords :
ageing; clean rooms; crystal oscillators; drying; etching; frequency stability; frequency standards; machining; optimisation; ultrasonic cleaning; DI water system; Megasonic cleaning; TCXO stability; affordable smart weapons; calibration; clean room processing; critical process stages; drying; etching; improved AT crystal aging; lapping; lower cost frequency standards; manufacturing optimization; oscillator configuration; quartz crystal production; rounding; substrate cleaning; temperature performance requirements; total lifetime drift reduction; wafering; Aging; Costs; Frequency; Global Positioning System; Manufacturing; Military standards; Oscillators; Production; Stability; Weapons;
Conference_Titel :
Frequency Control Symposium, 1998. Proceedings of the 1998 IEEE International
Conference_Location :
Pasadena, CA
Print_ISBN :
0-7803-4373-5
DOI :
10.1109/FREQ.1998.717895
