腔体滤波器的频率计算  

Frequency Calculation of Cavity Filter

作　　者：马军昌 魏文珍 

机构地区：[1]西安富士达科技股份有限公司,陕西西安710077

出　　处：《通信技术》2011年第7期141-143,共3页Communications Technology

摘　　要：腔体滤波器是现代微波通信系统中重要的组成,频率的计算是滤波器的关键,而频率的计算是比较繁琐的,基于复杂的理论计算。研究出了简洁实用的设计思路和设计公式,通过例题全面介绍了腔体滤波器各种频率的计算和仿真。给出了设计公式和设计步骤。首先根据综合设计得出单腔级数,再运用平板电容和筒状电容准确得到谐振杆长,通过ansoft模拟验证谐振频率,与实例有很好的吻合。Cavity filter is a very important part in microwave communication system,and its frequency calculation is a key to the filler design.This frequency calculation is tedious and based on complicated theoretical computation.And the calculational methods and emulation modes of cavity filter are discussed and investigated through examples,the easy and practical design formula and steps are also given.First,based on the synthesis design a single cavity progression is obtained,then the plate capacitor and tubbish capacitor are employed to accurately calculate the rod length of resonance,and then the frequency of resonance is verified through ansoft simulation,the experimental result is quite identical with the examples.

关 键 词：同轴腔体滤波器 谐振腔 谐振频率 ansoft模拟 

分 类 号：TN713.5[电子电信—电路与系统]