Compact balanced filter with high common mode suppression using hybrid microstrip and slotline spoof surface plasmon polaritons
Yi Song,
Anxue Zhang
Abstract:Hybrid folded microstrip and slotline (HFMS) spoof surface plasmon polaritons (SSPPs) are developed to design a balanced bandpass filter (BPF). The proposed HFMS SSPPs can lower the upper cut-off frequency for size reduction of nearly 65%. Microstrip-to-slotline transition structure is adopted for feeding structure. Under differential mode (DM) operation, a band-pass response is formed by the high-pass microstrip-toslotline transition structure and low-pass SSPP structure. Under common mode (CM) operation, hig… Show more
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