高可靠性发夹型带通滤波器的设计与制作  

Design and fabrication of hairpin bandpass filter with high reliability

作　　者：李艳江[1] 吴孟强[1] 彭森[1] 周晓华[1] 张树人[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《电子元件与材料》2010年第10期54-57,共4页Electronic Components And Materials

基　　金：四川省青年基金资助项目(No.JS0303001)

摘　　要：依据微带发夹型带通滤波器的原理,进行了数学建模,并结合ADS2008的优化仿真功能对滤波器进行了优化设计。根据仿真结果,在高介电常数的陶瓷基板[MgTiO3-CaTiO3-Nd2O3,εr=18,Q·f=65000（7GHz）,板厚度0.8mm]上制作了中心频率f0=3.5GHz、带宽为3.25~3.75GHz的滤波器。经测试发现,制得的滤波器具有良好的端口反射特性,可靠性高,基本满足3.25~3.75GHz频率范围内的特殊通讯要求。这表明本研究所用设计方法合理,适合于工程应用。Mathematical models were established according to the principle of microstrip hairpin bandpass filter, and the design was then optimized using the simulation function of the software ADS2008. Based on the simulation results, microstrip hairpin bandpass filter, with a central frequency f0 = 3.5 GHz and a bandwith ranging from 3.25 GHz to 3.75 GHz, was fabricated on the high-permittivity ceramic substrate [MgTiO3-CaTiO3-CeO2, εr = 18, Q？f = 65 000（7 GHz）] with a thickness of 0.8 mm. The results show that the fabricated filter exhibits excellent port-reflection performance and high reliability, meeting the requirements of the special communication application iin the frequency band from 3.25 GHz to 3.75 GHz. This indicates that the design method is reliable and suitable for engineering applications.

关 键 词：发夹型带通滤波器 微带线 ADS仿真设计 

分 类 号：TN713[电子电信—电路与系统]