一种可调滤波器的设计技术  

Design on a Tunable Filter

作　　者：胡娟[1] 王清芬[2] 王烨[3] 

机构地区：[1]中国电子科技集团公司第十五研究所,北京100083 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081 [3]西安邮电大学,陕西西安710121

出　　处：《无线电工程》2015年第4期53-55,59,共4页Radio Engineering

基　　金：国家科技重大专项;广域覆盖低成本宽带接入组网技术与应用示范网络开发(2012ZX03004-003)

摘　　要：随着通信系统对电子反对抗(ECCM)能力的日益提高,可调频段的窄带滤波器成为了一种常用方法。波导腔可调滤波器因其品质因数高、插入损耗小等特点,在射频前端应用广泛。但在高频段,在可调频率范围内设计带宽恒定、幅频特性良好的可调滤波器依然是需要解决的关键技术之一。通过分析滤波器的工作原理,合理选择结构形式,基于耦合带宽法,给出X频段可调滤波器的设计实例。结果表明,该可调滤波器完全满足工程要求。With the increasing improvement of the ECCM capability of communication system,the tunable narrow bandwidth filter is used for interference suppression universally.Now, the waveguide cavity tunable filters are widely applied in RF front-end because of high Q value and low insertion loss.But it is still a key technology to be implemented that a tunable filter is designed with the character- istics of constant bandwidth and high performance amplitude-frequency in higher frequency.By analyzing the operating principle of filter and selecting the sound structure,an example of an X-band tunable fiher is given based on the design method of coupled bandwidth.The results show that this tunable filter can meet the requirements of engineering.

关 键 词：ECCM 可调滤波器 波导腔 耦合带宽法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]