一种超小型抗振恒温晶振的研制

晶体振荡器是振动敏感器件，通常在振动条件下晶振的相位噪声会恶化。该文分析了抗振恒温晶振(OCXO)的设计方法及影响因素，阐述了振动对晶振相位噪声的影响，并采用微型减振器及低加速度灵敏度晶体谐振器设计了100 MHz超小型抗振恒温晶振。该文研制的100 MHz超小型抗振恒温晶振体积仅为25.4 mm×25.4 mm×15 mm，振动条件下相噪指标最优达到-147 dBc/Hz@1 kHz，达到了预期的研制目标。

Development of a Miniature Anti Vibration OCXO

It is well known that the crystal oscillator is a vibration sensitive device; the phase noise of it is usually degraded under the vibration conditions. The design method and influencing factors of the anti vibration oven controlled crystal oscillator (OCXO) are analyzed, and the effect of vibration on the phase noise of OXCO is presented. A 100 MHz ultra compact, anti vibration OXCO is designed with the micro vibration damper and low g sensitivity crystal resonator. The size of the developed OCXO is only 25.4 mm×25.4 mm×15 mm, the optimal phase noise is up to -147 dBc/Hz@1 kHz offset under the random vibration condition. The expected development goal is achieved.