An On-Chip Bandpass Filter Using Complementary Slit-Ring-Resonator-Loaded Spoof Surface Plasmon Polaritons with a Flexible Notch-Band

• DOI: 10.3390/mi14030607
• Publication Date: 2023-03-06T11:29:06Z
• Authors: Xin Cao; Chenyi Wang; Weiping Li; Qiangming Cai
• Keywords: Passband; Return loss; Split-ring resonator

In this paper, an on-chip bandpass filter with enhanced notch-band is proposed based on the artificial spoof surface plasmon polariton (SSPP) structure around 60 GHz. The shapes of tabs are modified to incorporate complementary slit-ring resonators (CSRRs) between tabs. passband produced by first higher mode SSPP structure. By adding CSRRs, two notch frequencies have been in passband. advantage that these transmission zeros almost independent each other and they do not much impact frequency Based measured results, has insertion loss 2.6 dB bandwidth 14.3 return better than 12 dB. a 3.3 GHz suppression level over 20 can be applied shared millimeter waveband 5G communication systems.