engleski

Study of High-Efficiency Corrugated Hard-Horn Antennas Using Classical Approaches: Hard Circular Waveguide Mode, Phase Factor, and Aperture Integration

In this paper, a classical-type approach is used to analyze the hard horn antenna.The quasi-TEM mode in the longitudinally corrugated cylindrical waveguide is found by using the homogenized asymptotic boundary conditions.The finite horn length is accounted for by including a phase factor in the waveguide-aperture fields, and the radiation patterns are finally obtained by aperture integration. The bandwidth is found to be much wider than previously anticipated with respect to low cross-polarization. Also, an advanced mode-matching code has been used for verification of the aperture field and the radiation patterns obtained with the much faster classical model.

hard horn antennas; cluster-fed multiple-beam antenna feeds

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