Browsing by Author "Tekin, Ahmet"

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    The Design of a High Gain Dual-Polarized Quad-Ridged Circular Horn Antenna for Wideband EMC Test Applications
    (APPLIED COMPUTATIONAL ELECTROMAGNETICS SOC, 2018) Bekir Solak; Mustafa Secmen; Ahmet Tekin; Secmen, Mustafa; Tekin, 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.