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Updated: Jan 28, 2026

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
A large-size horn antenna for X-band high power microwave radiations
Jinchuan Ju1, Wei Zhang1, Yunxiao Zhou1
1College of Advanced Interdisciplinary Studies, National University of Defense Technology, Chnagsha 410073, People's Republic of China.
Abstract:
We present a comprehensive study on designing a large-size horn antenna for radiating gigawatt-level high power microwaves (HPMs) in X-band. The horn taper angle and aperture dielectric window were optimized to achieve high power capacity, low reflection, and small mechanical deformation. It was particularly found that the HPM radiation patterns depend sensitively on the aperture dielectric plate thickness due to double reflections obeying Fresnel theorem. Theoretical analysis suggests that the optimal thickness should be chosen around integral times of half effective microwave wavelength in the dielectric.
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