High gain ultrawide band vivaldi antenna design for mini/micro satellite synthetic aperture radar applications

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dc.contributor.authorHanbay, Emre
dc.contributor.authorAydemir, Mustafa Emre
dc.date.accessioned2025-03-26T16:10:00Z
dc.date.available2025-03-26T16:10:00Z
dc.date.issued2019
dc.departmentİstanbul Esenyurt Üniversitesi
dc.descriptionAirbus; Aselsan; et al.; Roketsan; STM Engineering Technology Consultancy; Turkish Aerospace
dc.description9th International Conference on Recent Advances in Space Technologies, RAST 2019 -- 11 June 2019 through 14 June 2019 -- Istanbul -- 149874
dc.description.abstractIn this paper, Vivaldi antenna array design with high gain and directivity, which works in ultra-wide band, is presented especially for Synthetic aperture radar applications in small surveillance satellites. The proposed antenna structure has been modified to improve the parameters that make up the radiation characteristic of an antenna, such as directivity, gain, return loss (S11), voltage standing wave ratio (VSWR), and antenna efficiency. Firstly, the design parameters of a single antenna element are optimized using Genetic Algorithms (GA). The optimized Vivaldi antenna structure in 4449 mm dimensions offers high antenna gain and return loss(S11)below-10 dB in X-band (8-12 GHz) and Ku-band (12-18 GHz) frequency range. As a substrate, Rogers Duroid 5880 with a 2.2 dielectric constant and 0.508 mm thickness, which can be easily found on the market and preferred at high frequencies, has been used. The antenna structure, which is optimized for use in high resolution synthetic aperture radar applications, is designed as a planar antenna array. The planar antenna array (44)is formed with 16 elements. The distance between the elements and the amplitude of current is optimized by GA in order to enhance antenna gain by minimizing side lobe levels (SLL) and the grating lobes in operating band width. In this way, the side lobe level below-20 dB, the average 18 dB gain during the operating frequency and the highest 19.4 dB antenna gain at 10 GHz have been obtained. The measurement and simulation results are in agreement and the proposed antenna has been proven to be suitable for high resolution SAR applications. © 2019 IEEE.
dc.identifier.doi10.1109/RAST.2019.8767888
dc.identifier.endpage495
dc.identifier.isbn978-153869448-0
dc.identifier.scopus2-s2.0-85073895807
dc.identifier.scopusqualityN/A
dc.identifier.startpage491
dc.identifier.urihttps://doi.org/10.1109/RAST.2019.8767888
dc.identifier.urihttps://hdl.handle.net/20.500.14704/765
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relation.ispartofProceedings of 9th International Conference on Recent Advances in Space Technologies, RAST 2019
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_Scopus_20250326
dc.subjectgenetic algorithm
dc.subjectsatellite
dc.subjectsynthetic aperture radar
dc.subjectultra wide band
dc.subjectVivaldi antenna
dc.titleHigh gain ultrawide band vivaldi antenna design for mini/micro satellite synthetic aperture radar applications
dc.typeConference Object

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