Abstract
In this article, four wideband power dividers (two are filtering power dividers) using single- and double-layer periodic spoof surface plasmon polaritons (SSPPs) are proposed. Double-sided parallel-strip line is used to realize the wideband and low loss for the double-layer SSPPs. T-shaped SSPPs power dividers with large bandwidth, wideband isolation, and low loss using double-layer SSPPs to single-layer SSPPs transition are realized. Conventional coplanar waveguide is used as the output ports for the single-layer SSPPs. Moreover, two new SSPPs power dividers with filtering performance are realized with adding via holes in the double-layer SSPPs. The theoretical analysis, parametric study, and design procedure for these wideband power dividers are illustrated. In addition, for validity demonstration, four wideband SSPPs power dividers are fabricated in microstrip technology and characterized. Good agreements can be observed between the measured and simulated results, indicating good potential applications in the integrated plasmonic devices.
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