摘要： 提出了一种新型的两路等幅反相输出功分器。该功分器设计的基本原理是基于传统的威尔金森结构，通过改变两路输出传输路径上的传输线长度，并在两输出端口间的隔离电阻一端引入一段额外的传输线，使得该结构在一定带宽内获得等幅反相输出及良好的隔离效果。另外，利用奇偶模电压分析法，对该结构的具体参数进行了详细的推导。最后，采用平面微带线结构对该设计方法进行了验证，实测该功分器中心频率为3.8 GHz，1 dB相对带宽为31%，带内回波优于-15 dB，隔离度优于20 dB。

中图分类号：TN61 文献标志码：A DOI: 10.16157/j.issn.0258-7998.245487
中文引用格式： 刘帅. 一种新型反相输出功分器设计[J]. 电子技术应用，2025，51(3)：81-84.
英文引用格式： Liu Shuai. Design of a novel out-of-phase power divider[J]. Application of Electronic Technique，2025，51(3)：81-84.

Design of a novel out-of-phase power divider

Abstract： A novel two-way out-of-phase power divider（PD）is proposed in this paper. The design principle is similar to conventional Wilkinson structure. By setting the length of the two-output transmission lines properly and introducing an extra line at one end of the isolator, the power divider obtains equal divide, out-of-phase, and good isolation in the passband. Besides, the parameters of the structure are deduced in detail using even-odd mode analysis method. Finally, a power divider, centered at 3.8 GHz，is fabricated to demonstrate the principle by planar microstrip line. It is observed from the measurement that the PD has 1 dB fractional bandwidths of 31%, better than -15 dB return loss and 20 dB isolation, respectively.

Key words : power divider；Wilkinson；equal divide and out-of-phase；even-odd mode