基于Chip-on-TEC的高精度晶体振荡器研究OA北大核心CSTPCD
Research on the quartz crystal oscillator with high frequency stability based on Chip-on-TEC method
提高晶体振荡器频率稳定度的首要手段是保持温度的稳定.基于热电制冷器具有的恒温特性,采用Chip-on-TEC 方法,给出 了一种高精度的晶体振荡器的设计方案.利用多物理仿真软件,针对商用的音叉型石英晶体,首次建立了 32.768 kHz石英晶片的完整的有限元多物理场仿真模型.仿真结果表明,晶体的谐振频率与商用产品完全相同;基于TEC的晶体振荡器设计方案可以使得晶片温度变化低至0.008 ℃,对应的频率稳定度5.4×10-9.考虑到高精度切型晶片材料的非易得性,所给出的方案为采用低精度切型晶片设计高精度的晶体振荡器提供了思路.
The primary means of improving frequency stability of a crystal oscillator is to maintain a stable temperature.Based on the constant temperature characteristics of thermoelectric coolers,a high-precision crystal oscillator design was proposed by using the Chip-on-TEC method.By using multi-physics simulation software,a complete finite element multiphysics simulation model was established for a 32.768 kHz quartz tuning fork.The simulation results show that the resonant frequency of the quartz crystal is exactly the same as that of commercial products.The temperature difference is as low as 0.008 ℃,and the corresponding frequency stability is only 5.4×10-9.The proposed method provides a direction for designing high stability crystal oscillators using low-precision cut type quartz crystals,which addresses the difficulty in obtaining high-precision cut-type crystal materials.
刘文林;宋玉琢;魏文菲;吕强;徐建;陈明祥;黄大勇
武汉轻工大学电气与电子工程学院,湖北武汉 430023武汉轻工大学电气与电子工程学院,湖北武汉 430023||中南民族大学电子信息工程学院,湖北武汉 430074华中科技大学机械科学与工程学院,湖北武汉 430074泰晶科技股份有限公司,湖北随州 441300
电子信息工程
石英晶体音叉谐振器谐振频率有限元多物理场仿真
quartz crystaltuning fork resonatorresonant frequencyFEMmultiphysics simulation
《电子元件与材料》 2024 (005)
612-616 / 5
国家自然科学基金(61404095);湖北省重点研发计划(2021BAA213)
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