High-Gain Multi-Band Koch Fractal FSS Antenna for Sub-6 GHz Applications

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dc.authoridVarshney, Atul/0000-0003-0440-4937
dc.authoridGENCOGLAN, Duygu Nazan/0000-0001-5014-9514
dc.contributor.authorVarshney, Atul
dc.contributor.authorGencoglan, Duygu Nazan
dc.date.accessioned2025-01-06T17:38:03Z
dc.date.available2025-01-06T17:38:03Z
dc.date.issued2024
dc.description.abstractFeatured Application The proposed antenna is potentially suitable for Wi-MAX (3.5 GHz) and sub-6 GHz n77 (3300-3800 MHz), n78 (3300-4200 MHz), and n79 (4400-4990 MHz), in addition to C-band applications.Abstract This study introduces a novel antenna based on the binary operation of a modified circular patch in conjunction with the Koch fractal. The antenna is intended for applications in the sub-6 GHz band, partial C-band, and X-band. The low-cost antenna is fabricated on a 1.6-mm-thick FR-4 substrate. A frequency-selective surface (FSS) is used to overcome the decreased values of the gain and bandwidth due to the fractal operations. The introduced split ring resonator (SRR) and the antenna substrate dimension reduction reduce the bandwidth and antenna gain. The air gap between the FSS and the antenna not only enhances the antenna gain but also controls the frequency tuning at the design frequency. The antenna size is miniaturized to 36.67%. A monopole antenna ground loaded with an SRR results in improved closest tuning (3.44 GHz) near the design frequency. The antenna achieves a peak gain of 9.37 dBi in this band. The FSS-based antenna results in a 4.65 dBi improvement in the gain value with the FSS. The measured and simulated plots exhibit an excellent match with each other in all three frequency bands at 2.96-4.72 GHz. These bands cover Wi-MAX (3.5 GHz), sub-6 GHz n77 (3300-3800 MHz), n78 (3300-4200 MHz), and approximately n79 (4400-4990 MHz), in addition to C-band applications.
dc.identifier.doi10.3390/app14199022
dc.identifier.issn2076-3417
dc.identifier.issue19
dc.identifier.scopus2-s2.0-85206583078
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3390/app14199022
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2442
dc.identifier.volume14
dc.identifier.wosWOS:001332139000001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofApplied Sciences-Basel
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectfractal
dc.subjectfrequency-selective surface (FSS)
dc.subjectKoch curve
dc.subjectminiaturization
dc.subjectsplit ring resonator (SRR)
dc.subjecttunable FSS
dc.titleHigh-Gain Multi-Band Koch Fractal FSS Antenna for Sub-6 GHz Applications
dc.typeArticle

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