一种新型低频窄带石英晶体滤波器的研制  

Study and Preparation of a New Type of Low-Frequency Narrow Band-Pass Quartz Crystal Filter

作　　者：靳宝安[1] 王春程 王林力 

机构地区：[1]陕西科技大学电气与信息工程学院,西安710021 [2]渝林学院,陕西渝林719000 [3]陕西北川无线电器材厂,陕西咸阳712099

出　　处：《电子器件》2008年第5期1562-1565,共4页Chinese Journal of Electron Devices

基　　金：陕西省专利产业化项目资助(2005zz-04)

摘　　要：利用了两只件切型厚度弯曲振动模式、切角为+5o的长方片石英晶体,设计并研制了一种新型的低频、窄带、带通型晶体滤波器,较好地实现了器件所要求的各项技术参数。在工作频率为80kHz时达到了±3Hz的通带宽度及±1Hz的频率稳定性。如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。A new type of low frequency narrow band-pass quartz crystal filter was prepared in this paper. The desired parameters were successfully achieved by two pieces rectangle-quartz crystal resonator of xy cut x＋5^o model thickness bending vibrating. Especially, ≥±3 Hz band-pass width and ≤±1 Hz frequency stability were achieved at operation frequency of 80 kHz. The key technique of this new filter is how to achieve the extreme narrow band-pass width and a slight deviation of central frequency.

关 键 词：低频 中心频率 通带宽度 桥型电路 

分 类 号：TN713.91[电子电信—电路与系统]