短路枝节加载双模滤波器研究  

Study of Short-stub Loaded Dual-mode Microstrip Filter

作　　者：位朝垒[1] 李晶[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2015年第4期77-79,95,共4页Radio Communications Technology

基　　金：国家自然科学基金项目项目(61308061)

摘　　要：综合研究了源与负载间存在直接耦合的短路枝节加载双模滤波器的频响规律。通过传输零点理论预测了此类双模滤波器固有传输零点的分布规律,通过分析各通路的信号相位关系,在理论上推测了附加传输零点的分布位置。最后通过两种滤波器实例验证了该类型滤波器应有的两种可能的频响特性,同时也验证了理论推测的正确性。The frequency response rule of short-stub loaded dual-mode microwave filters with S-L coupling is studied in the paper. The rule of inherent transmission zero is predicted through the transmission zero theory.The distribution position of the extra transmission zero is analyzed theoretically by the phase relationship among all signal channels of the dual-mode filter with S-L coupling.Finally,two possible frequency response characteristics of short-stub loaded dual-mode filter are validated by two filter instances, and the correctness of the theoretical analysis is also proved.

关 键 词：滤波器 双模 短路枝节加载 S-L COUPLING 

分 类 号：TN713[电子电信—电路与系统]