Design and experiment of high-power ultra-wideband feed

A high-power ultra-wideband feed is developed for large parabolic antenna. The feed consists of constant an impedance balun and a Chebyshev tapered transmission line TEM horn, and the impedance characteristics, transmission characteristics and radiation characteristics are studied based on numerical simulation. Then we make some experimental study. The results show that the feed has low reflection, wide band and high radiation efficiency. This feed has been successfully applied to large high-power parabolic antenna.