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Hexagonal-Shaped Broadband Compact Scrimp Horn Antenna for Operation in C -Band

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5 Author(s)
Muhammad, S.A. ; IETR, Univ. of Rennes 1, Rennes, France ; Rolland, A. ; Samsul Haimi Dahlan ; Sauleau, R.
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The performance of compact linearly polarized Short Circular Ring-loaded horn with Minimized cross-Polarization (Scrimp) horns with different aperture sizes is first evaluated using an in-house finite-difference time-domain (FDTD) computer-aided design (CAD) tool. Then, a very short hexagonal Scrimp horn with an aperture size of 1.5λ0 is designed in C -band; its height is only 1.26λ0 . The experimental results demonstrate that the aperture efficiency is higher than 80% with a reflection coefficient lower than -17 dB over a 12.6% frequency bandwidth. Radiation patterns of excellent quality are measured with a cross-polarization level lower than - 28 dB over the entire bandwidth. These antennas are very attractive candidates for high-power focal array configurations in multifeed systems.

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Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )

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