In this article, a novel ultra‐wideband four‐way power divider based on spoof surface plasmon polaritons (SSPPs) is proposed. The study of the transition structure indicates that the wave supported by unilateral SSPPs possesses the similar dispersion relation to the ones restricted by bilateral SSPPs and effective transmission of electromagnetic wave can be realized in this structure. Owning to these features, waves propagating along the bilateral SSPPs can be equally divided into two unilateral SSPPs and the power divider can be realized by loading this structure, which solves the problem of power distribution in multi‐way or even arbitrary ways. With the help of HFSS, the microstrip‐fed power divider is simulated and results show that it performs well. In order to verify the simulation effect, a object is fabricated and the measured results are in good agreement with simulation results. This power divider has the advantages of ultra‐wideband, low insertion loss and arbitrary‐way of power distribution, which opens up a new avenue for the application of SSPPs in power divider and has a great application prospects in photonics integrated circuits.

中文翻译：

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新型超宽带四路欺骗表面等离子体激元极化子功率分配器

本文提出了一种基于欺骗表面等离子体激元极化子（SSPP）的新型超宽带四路功率分配器。对过渡结构的研究表明，单边SSPPs支撑的波具有与双边SSPPs限制的波具有相似的色散关系，在这种结构中可以实现电磁波的有效传输。由于这些特性，沿双边SSPP传播的波可以被平均分为两个单边SSPP，并且通过加载这种结构可以实现功率分配器，从而解决了多路甚至任意方式的功率分配问题。借助HFSS，对微带馈电功率分配器进行了仿真，结果表明其性能良好。为了验证模拟效果，制作了一个物体，测量结果与仿真结果非常吻合。该功率分配器具有超宽带，低插入损耗和任意分配功率的优点，为SSPP在功率分配器中的应用开辟了一条新途径，在光子集成电路中具有广阔的应用前景。