{"title":"Wideband Four-Way Filtering Power Divider Based on Hybrid Spoof Surface Plasmon Polariton and Substrate Integrated Waveguide","authors":"Fahimeh Tavakoli, Ali-Reza Moznebi","doi":"10.1007/s11468-024-02326-0","DOIUrl":null,"url":null,"abstract":"<p>In this paper, a four-way filtering power divider (FPD) based on hybrid spoof surface plasmon polariton (SSPP) and substrate integrated waveguide (SIW) is designed and fabricated. It is for the first time that a four-way FPD has been implemented by integrating SIW and SSPP structures. This combination can guarantee a wide bandwidth which would not be attainable by employing merely SIW or SSPP. The presented hybrid structure has been realized by etching some butterfly grooves on the upper metal surface of SIW and half-mode SIW. The lower and upper cutoff frequencies of this hybrid SIW-SSPP FPD can be adjusted independently by tuning the dimensions of SIW and SSPP unites, respectively. Employing butterfly-shaped SSPPs instead of typical rectangular SSPPs with the same length leads to a reduction in the circuit’s size, higher slow-wave effects, and shorter wavelength. To validate the proposed design procedure, the presented FPD is fabricated and measured. A good agreement between the simulated and measured results is achieved. What stands out from the measured results is that the proposed circuit achieves a 3-dB fractional bandwidth of 38% from 4.2 to 6.2 GHz, a return loss of higher than 13.5 dB, and a minimum insertion loss of 0.7 dB.</p>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s11468-024-02326-0","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, a four-way filtering power divider (FPD) based on hybrid spoof surface plasmon polariton (SSPP) and substrate integrated waveguide (SIW) is designed and fabricated. It is for the first time that a four-way FPD has been implemented by integrating SIW and SSPP structures. This combination can guarantee a wide bandwidth which would not be attainable by employing merely SIW or SSPP. The presented hybrid structure has been realized by etching some butterfly grooves on the upper metal surface of SIW and half-mode SIW. The lower and upper cutoff frequencies of this hybrid SIW-SSPP FPD can be adjusted independently by tuning the dimensions of SIW and SSPP unites, respectively. Employing butterfly-shaped SSPPs instead of typical rectangular SSPPs with the same length leads to a reduction in the circuit’s size, higher slow-wave effects, and shorter wavelength. To validate the proposed design procedure, the presented FPD is fabricated and measured. A good agreement between the simulated and measured results is achieved. What stands out from the measured results is that the proposed circuit achieves a 3-dB fractional bandwidth of 38% from 4.2 to 6.2 GHz, a return loss of higher than 13.5 dB, and a minimum insertion loss of 0.7 dB.
期刊介绍:
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.