Bekir SolakMustafa SeçmenAhmet Tekin2025-10-06201810544887https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057624948&partnerID=40&md5=3fd4d6796683baec290373f07b9e3ee1https://gcris.yasar.edu.tr/handle/123456789/9533This 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. © 2019 Elsevier B.V. All rights reserved.EnglishCircular Horn Antenna, Dual Polarization, Electromagnetic Compatibility (emc), Quad-ridged Circular Waveguide, Wideband Antenna, Antenna Feeders, Bandwidth, Circular Waveguides, Electromagnetic Compatibility, Microwave Antennas, Polarization, Conical Horn Antennas, Dual-linear Polarization, Dual-polarizations, Electromagnetic Compatibility (emc) Testing, Horizontal And Vertical Polarizations, Quad-ridged, Radiated Emissions, Wideband Antenna, Horn AntennasAntenna feeders, Bandwidth, Circular waveguides, Electromagnetic compatibility, Microwave antennas, Polarization, Conical horn antennas, Dual-linear polarization, Dual-polarizations, Electromagnetic compatibility (EMC) testing, Horizontal and vertical polarizations, Quad-ridged, Radiated emissions, Wideband antenna, Horn antennasThe design of a high gain dual-polarized quad-ridged circular horn antenna for wideband EMC test applicationsArticle