Dawei Zhang, Kuang Zhang, Ruiwei Dai, Qun Wu, T. Jiang
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A Compact Low-Pass Filter Based on Spoof Surface Plasmon Polaritons Using Defected Ground Structure
In this work, defected grounded structure (DGS) is employed to a spoof surface plasmon polaritons (SSPPs) unit. Dispersion properties of SSPPs and normalized impedance the unit are analyzed. Based on a smooth transition with simple structure and small size, a compact low-pass filter based on SSPPs is designed. Excellent simulated results (return loss lower than −15.8dB up to 10.1GHz) shows a good balance between broadband features and compact size. This work can find significant potential applications in microwave devices.
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