Frequency splitter based on spoof surface plasmon polariton transmission lines

Chu Qi; Shaowei Liao; Quan Xue

doi:10.1063/1.5043282

Frequency splitter based on spoof surface plasmon polariton transmission lines

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

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22 Scopus Citations

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Author(s)

Chu Qi
Shaowei Liao
Quan Xue

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Detail(s)

Original language	English
Article number	161902
Journal / Publication	Applied Physics Letters
Volume	113
Issue number	16
Publication status	Published - 15 Oct 2018

Link(s)

DOI	DOI https://doi.org/10.1063/1.5043282 Final Published version
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Attachment(s)	Documents 26489975.pdf Final Published version, 2.84 MB, PDF Publisher's Copyright Statement This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Chu Qi, Shaowei Liao, and Quan Xue , "Frequency splitter based on spoof surface plasmon polariton transmission lines", Appl. Phys. Lett. 113, 161902 (2018) and may be found at https://doi.org/10.1063/1.5043282.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85055020657&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(a455498f-6901-414b-a5c3-b085afc71f0b).html

Abstract

We propose a frequency splitter based on spoof surface plasmon polariton (SSPP) transmission lines (TLs). The device consists of two bent domino SSPP TLs with different geometric parameters, leading to different passbands, forming two frequency band branches. A transition from a rectangular waveguide to the two SSPP TLs is designed for frequency splitting. To achieve efficient transition for both branches in their respective frequency bands, different transition lengths of the two branches and a shifted placement from the center are adopted. Furthermore, for the high frequency band branch, to obtain satisfactory out-of-band rejection below the lower cut-off frequency, an SSPP bandstop structure is introduced by placing SSPP TL sections along the main SSPP TL. A prototype is designed, fabricated, and evaluated. The results prove the feasibility of the proposed SSPP frequency splitter.