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Compact and Narrow-Band Bandpass Filter Using Spoof Surface Plasmon Polaritons
Leilei Liu1; Yangjun Hu1; Ruo-Zhou Li1; Qingfeng Zhang2; Lei Zhu3
Source PublicationIEEE Photonics Technology Letters

This letter presents a novel narrow-band bandpass spoof surface plasmon polarition (SSPP) filter, which has a controllable passband, good rejection, and a compact structure. It is composed of two end-extending SSPP transmission lines and a pair of L-shaped coupling branches. Both the bandwidth and the central frequency can be adjusted by changing the depth of the SSPP unit and the length of SSPP transmission line behind the coupling branches. The dispersion curves of the SSPP unit are analyzed, and the influences of some structural parameters are investigated. A SSPP band-pass filter is fabricated and measured based on the proposed method, showing a wide 3-dB fractional bandwidth of 11.2% centered at 6.25 GHz and an out-of-band rejection below -15 dB within 1-10 GHz. The measured result shows good agreement with the simulated one.

KeywordBandpass Filter Controllable Central Frequency And bAndwidth Spoof Surface Plasmon Polariton (Sspp)
URLView the original
Indexed BySCIE
WOS Research AreaEngineering ; Optics ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Optics ; Physics, Applied
WOS IDWOS:000663526500002
Scopus ID2-s2.0-85107360325
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
Corresponding AuthorLeilei Liu; Qingfeng Zhang
Affiliation1.National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing, China
2.Department of Electronics and Electrical Engineering, Southern University of Science and Technology of China, Shenzhen, China
3.Department of Electrical and Computer Engineering, University of Macau, Macao
Recommended Citation
GB/T 7714
Leilei Liu,Yangjun Hu,Ruo-Zhou Li,et al. Compact and Narrow-Band Bandpass Filter Using Spoof Surface Plasmon Polaritons[J]. IEEE Photonics Technology Letters,2021,33(13):676-679.
APA Leilei Liu,Yangjun Hu,Ruo-Zhou Li,Qingfeng Zhang,&Lei Zhu.(2021).Compact and Narrow-Band Bandpass Filter Using Spoof Surface Plasmon Polaritons.IEEE Photonics Technology Letters,33(13),676-679.
MLA Leilei Liu,et al."Compact and Narrow-Band Bandpass Filter Using Spoof Surface Plasmon Polaritons".IEEE Photonics Technology Letters 33.13(2021):676-679.
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