交指形哑铃带隙结构的小型化带通滤波器设计  

Design of compact bandpass filter using dumb-bell interdigital slot structure

作　　者：刘新月[1] 郑宏兴[1] 孙程光[1] 

机构地区：[1]天津职业技术师范大学天线与微波技术研究所,天津300222

出　　处：《天津职业技术师范大学学报》2013年第1期10-12,共3页Journal of Tianjin University of Technology and Education

基　　金：天津市自然科学基金资助项目(12JCYBJC10500);天津职业技术师范大学科研发展基金项目(YJS10-09)

摘　　要：设计了一种交指形哑铃带隙结构的带通滤波器,在传统哑铃结构的基础上,把直线臂改进为交指形结构,增加了开路枝节,从而增加等效并联电容,实现了滤波器的小型化。与传统结构相比,新设计的结构尺寸减小了16%,并在阻带增加了2个传输零点,抑制了寄生通带。An interdigital dumb-bell slot resonator bandpass microstrip filter is proposed in this paper, which changes the line arm into interdigital structure. It opens stub to enhance the parallel equivalent capacitance efficiently, leading to size reduction of the filter. Compared with the traditional structure filter the proposed filter has a size reduction of 16%. Two transmission zeros are increased in its＇ stopband and harmonics output is successfully suppressed.

关 键 词：带通滤波器 交指形哑铃带隙 小型化 传输零点 

分 类 号：TN713.5[电子电信—电路与系统]