新型小型化超宽带功率分配器的设计  

Design of a novel compact ultra-wideband power divider

作　　者：范海军[1] 周希朗[1] 

机构地区：[1]上海交通大学射频与微波技术研究中心,上海200240

出　　处：《电子技术应用》2011年第11期125-127,共3页Application of Electronic Technique

基　　金：国家重大基础研究计划"973"子课题(2009CB320204);国家自然科学基金委创新研究群体基金资助项目(60821062)

摘　　要：利用四分之三波长折叠微带线与四分之一波长微带线级联,并在输入端口引入四分之一波长短路线,设计出一种新型的超宽带功率分配器。采用奇偶模的方法进行理论分析,导出设计参数方程,并通过HFSS进行仿真优化。仿真和测量结果表明,输入回波损耗从3 GHz～10.9 GHz均大于10 dB。插入损耗从2.6 GHz～9.5 GHz均小于1 dB,从9.5 GHz～10.8 GHz均小于1.3 dB。输出端口的回波损耗和隔离度从3 GHz～12.7 GHz均大于10 dB。高频的带外抑制在14.2 GHz时达到20 dB。The design of a novel Wilkinson power divider for uhra-wideband （UWB） operation is presented. This structure is formed by a three-quarter-wavelength folded microstrip line segment connected a quarter-wavelength section and a short-circuited stub introduced at the input port. Closed-form design equations are derived based on the even-mode and odd-mode analysis. The measured results show the input return loss is greater than 10dB from 3GHz to 10.9GHz, while the insertion loss is less than 1 dB from 2.6 GHz to 9.5 GHz, less than 1.3 dB from 9.5 GHz to 10.8 GHz, and the out-of-band rejection level is more than 20 dB at 14.2 GHz. The output return loss and the isolation between the port 2 and port 3 are all greater than lOdB from 3GHz to 12.7GHz.

关 键 词：超宽带 功率分配器 奇偶模分解方法 

分 类 号：TN626[电子电信—电路与系统]