10MHz带阻型压电石英晶体滤波器研制  

Preparation of 10 MHz Band-stop Crystal Filter

作　　者：靳宝安[1] 冯辉[2] 王春程[3] 

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021 [2]西安电子科技大学微电子学院,陕西西安710071 [3]榆林学院物理系,陕西榆林719000

出　　处：《压电与声光》2009年第2期204-206,共3页Piezoelectrics & Acoustooptics

基　　金：陕西省专利产业化基金资助项目(2005ZZ-04)

摘　　要：采用三节3晶体的格型电路,设计和研制出了用于边带型通讯机中进行狭窄频带抑制的一种中高频带阻型晶体滤波器新产品。其关键技术指标为10 MHz中高频滤波晶体半成品的设计,插损IL≤5 dB,3 dB带阻宽度BW3 dB≤±3 kHz,带阻衰减(限波)≥45 dB。另外,该文还给出了两节2晶体和三节3晶体的滤波器电路图及滤波器产品的实测传输曲线。In order to bring down the narrow wave band of single side-band communication service, a new kind of middle-high frequency three stage grid model band-stop quartz crystal filters,which made use of three pieces crystal resonator and operated at 10 MHz, was designed and prepared in this paper. The key techniques such as the design of semi-manufactures of 10 MHz filtering crystals and the achieved of given characteristics of products,such as insert fosse≤5 dB, 3 dB width in band-hinder≤±3kHz, attenuation in band-hinder （restrictions on wave pattern）≥45 dB were solved. In addition, as a contrasts the filter circuit diagrams of two stage and three stage,true measurement transmission curve of 10 MHz band-stop filters were given in this paper.

关 键 词：格型电路 全通网络 特征阻抗 带阻滤波器 

分 类 号：TN713.91[电子电信—电路与系统]