小型化多层带线谐振腔缺陷地结构LTCC宽带带通滤波器  

Miniature LTCC Broadband Bandpass Filters Using Multilayer Coupled Stripline Resonators with Defected Ground Structure

作　　者：张祥军[1] 方大纲[1] 

机构地区：[1]南京理工大学电光学院,南京210094

出　　处：《微波学报》2008年第5期58-61,共4页Journal of Microwaves

基　　金：国家自然科学基金(60671038)

摘　　要：利用多层宽边耦合带状线谐振结构实现小型化LTCC(LowTemperature Co-fired Ceramic)宽带滤波器。采用了两层、三层耦合带线谐振结构,利用这两种谐振结构可以有效减小滤波器的尺寸。利用四个谐振腔结构,实现较宽的频带和较强的选择特性;输出、输入引入电感反馈产生两个传输零点,利用DGS(Defected Ground Struc-ture)可使滤波器在阻带和镜像频率处产生较大的衰减。设计出侧面印刷互连和侧面通孔互连两种工艺结构的滤波器,利用LTCC工艺加工出侧面印刷互连的滤波器性能良好,测试性能和仿真结果基本吻合。A novel multilayer coupled stripline resonator structure is introduced to realize miniature broadband bandpass filters. Two possible filter configurations are proposed in this paper： two-layer coupled stripline resonators with shielded layers connected by side metal printing and three-layer coupled stripline resonators with shielded layers connected by side metal vias. Wider band and good selectivity are obtained by exploiting four resonators. By using the defected ground structure （DGS） , the filter exhibits a high rejection in stopband. The technology of low temperature co-fired ceramic （LTCC） is employed to manufacture the filters. Experiment results of one kind of the filters are presented and the measurement data are in agreements with the results of the simulation.

关 键 词：多层宽边耦合带状线谐振结构 缺陷地结构(DGS) 低温共烧结陶瓷(LTCC) 

分 类 号：TN713.5[电子电信—电路与系统] TN713