Browsing by Author "Solak, Bekir"

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    ArticlePublicationOpen Access
    The design of a high gain dual-polarized quad-ridged circular horn antenna for wideband EMC test applications
    (The Applied Computational Electromagnetics Society, 2018-09) Solak, Bekir; Seçmen, M.; Tekin, Ahmet; Electrical & Electronics Engineering; TEKİN, Ahmet; Solak, Bekir
    This paper presents the design of a high gain broadband quadruple-ridged circular horn antenna for Electromagnetic Compatibility (EMC) testing. The proposed antenna contains a wideband feed structure as a transition between coaxial line and quad-ridged circular waveguide behind the conical horn antenna. The wideband matching between impedances at the apertures of the feed and the horn is achieved with a tapering at the flare section along the horn length, which is obtained after a detailed investigation of various tapering profiles. The antenna is designed to operate in horizontal and vertical polarizations (dual linear polarization) simultaneously in EMC tests. This implementation is found to present a return loss greater than 10 dB, isolation level higher than 28 dB, high-gain (minimum 13.6 dBi) and low-gain variation of 4.5 dBi within the frequency range of 1-6.75 GHz (6.75:1 bandwidth) at both polarizations, which is a desired feature in radiated emission and immunity tests.
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    Master ThesisPublicationMetadata only
    Design of high gain wideband quad-ridged horn antenna for emc testing
    (2017-06) Solak, Bekir; Tekin, Ahmet; Seçmen, Mustafa; Tekin, Ahmet; Seçmen, Mustafa; Nalbantoğlu, A. H.; Uğurdağ, Hasan Fatih; Department of Electrical and Electronics Engineering; Solak, Bekir
    This thesis presents a design and simulation of high gain wideband quad-ridged circular horn antenna for Electromagnetic Compatibility (EMC) testing. The selected operating frequency range of the antenna is from 1 GHz to 6 GHz, which is implemented for radiated emission and radiated immunity tests. The antenna is designed as a quad-ridged which is desired to be used in the horizontal and vertical polarization measurements simultaneously. To determine the antenna gain parameter, Vestel test systems are considered as well as actual needs. The gain of the horn antenna currently used in laboratories is not enough for the 3 meters testing. Therefore, 1 meter testing window method is used for radiated, radio-frequency, electromagnetic eld immunity tests which are in the scope of EN61000-4-3 standard. Hence, the designed horn antenna gain is aimed to be have approximately 14 dBi. CST Microwave Studio is used in the design of the horn antenna and simulation results. The simulation results show that the antenna gain is approximately 14 dBi, also at least about 10 dB return loss (S11 and S22) separately for each port providing horizontal and vertical polarization and the isolation of the ports is more than -27 dB.