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劉解華，張其善，楊軍

（北京航空航天大學電子信息工程學院，北京 100083）

摘要：在介紹π網絡法石英晶體元件電氣參數測量原理的基礎上，設計了測量系統，并對π網絡輸出電壓以及π網絡兩端電壓之間相位差進行分析與建模，提出迭代法和對分法相結合的快速測量算法。此結合算法測量速度快、測試精度高，適合1～200MHz頻段石英晶體元件半成品加工控制和成品測量，且通過實驗證明整個測量系統的測量精度和穩定性都達到國際先進水平。

關鍵詞：π網絡；石英晶體；迭代法；對分法

中圖分類號：TP206+.1 文獻標識碼：A 文章編號：1672-4984(2006)02-0058-04

Research on fast measurement technique of quartz crystal unit resonant frequency

LIU Jie-hua, ZHANG Qi-shan, YANG Jun

(School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics,Beijng 100083,China)

Abstract: A quartz crystal units’measurement system based on π network measuring method is introduced. A model is built on the output voltage of π network and the phase delay between its input voltage and output voltage after adequate research on them. A algorithm combining iterative algorithm and bisection algorithm is put forward. Because of its fast speed and high precision, it is used for semi-manufactured product’s manufacturing control and finished product’s measurement of quartz crystal units ranging from 1MHz to 200MHz. It was proved that measurement precision and stability of the whole measurement system has reached an international leading level.

Key words:π network；Quartz crystal component；Iterative algorithm；Bisection algorithm