高性能LTCC双工器的研究与设计  

Research and design of a high-performance LTCC diplexer

作　　者：乔冬春[1] 戴永胜[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《电子元件与材料》2016年第7期46-48,59,共4页Electronic Components And Materials

基　　金：国家重点基础研究发展973计划资助(No.2009CB320201);国家国防重点实验室基金资助(No.9140C1402021102)

摘　　要：提出一种基于LTCC技术的双工器的设计与实现方法。根据指标设计出相应频段的分支滤波器,再利用T型结将两滤波器的输入端相连接,构成双工器的输入端,最后将它们一体封装。该设计具有结构简单、尺寸小、隔离度高等优点。根据项目需要,设计了一款通带分别为3.45-3.85 GHz和4.9-5.9 GHz的双工器,并利用LTCC技术加工制造,通带的插入损耗小于2 dB,回波损耗优于–15 dB,尺寸仅为4 mm×10 mm×2 mm。A method of designing and implementing LTCC diplexer was proposed. Two branch filters were designedaccording to the pass bands and technical indexes, then the input ports of the two filters were connected with T junction tomake up the common input port, finally, they were packaged them into a single ceramic block. This kind of design has theadvantages of simple structure, small size and high isolation. According to the requirement of current project, a diplexerwith pass band of 3.45-3.85 GHz and 4.9-5.9 GHz is designed, the insertion loss is less than –2 dB, the return loss isbetter than –15 dB and the size is only 4 mm×10 mm×2 mm.

关 键 词：双工器 滤波器 小型化 低温共烧陶瓷 插入损耗 T型结 

分 类 号：TN713[电子电信—电路与系统]