本文分析了一种新型大功率Wilkinson功分器的设计，在传统Wilkinson功分器的基础上，通过对其结构形式和端口间的匹配性进行改进，研制了一个功率可达到200W频带在300-400MHz的大功率高隔离度同轴型宽带功分器。采用奇-偶模分析方法对传统的Wilkinson功分器改进设计，并采用级联的结构形式，从而提高设计精度和电路性能。采用四分之一波长传输线与加装大功率耐压匹配电阻的设计，提高了Wilkinson功分器端口的匹配性，从而提高了功分器的隔离度，减小了差损，使之插损值保持在6.2dB以内，端口处的实际隔离度都达到25dB；采用金属直接切削加工的设计，完成同轴腔体结构，提高了Wilkinson功分器的耐高功率性能，使得其功率达到200W，并解决了大功率带来的散热问题。采用HFSS软件仿真与优化，验证所涉及参数的可行性，制作了工作频率为350MHz，带宽100MHz的Wilkinson功分器，通过实际测试与调试，各项性能参数优于同类产品，达到设计指标要求。

A new type of high-power Wilkinson power divider is introduced. Based on the traditional Wilkinson power divider, its structure and the matching between its ports are improved. A power of 200W that working in 300-400MHz, high-isolation, coaxial-based Wilkinson power divider is developed. Appling the dual-mode odd analysis and the cascade structure, the traditional Wilkinson power splitter be improved in the design accuracy and circuit performance. Based on the quarter-wavelength transmission line and installation of high-power voltage matches the resistance of the design, the Wilkinson Splitter be improved in port matching, thus enhancing the power splitter isolation, and reducing the differential loss; The insertion loss keep in 6.2dB and the isolation of port achieved in 25dB; The use of direct metal cutting design, complete the coaxial cavity structure, improve the Wilkinson power divider resistance of high-power performance, making its power reaches 200W, and solution to the heat dissipation problem caused by high-power. Used HFSS simulation and optimization, the feasibility of parameters be verified. A working frequency of 350MHz, bandwidth of 100MHz Wilkinson power divider be produced. Through testing and debugging, the performance parameters similar the same products, meet design requirements.