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Design, computer simulation and measurement of a high efficiency horn antenna


Yu.V. Krivosheev – Ph.D.(Eng.), Senior Research Scientist, PJSC «Radiofizika» (Moscow); Lecturer, Moscow Institute of Physics and Technology (State University)
A.V. Shishlov – Ph.D.(Eng.), Head of Department, PJSC «Radiofizika» (Moscow); Deputy Head of Department, Moscow Institute of Physics and Technology (State University)
Yu.A. Suserov – Leading Engineer, PJSC «Radiofizika» (Moscow)
V.V. Denisenko – Ph.D.(Phys.-Math.), Head of Department, PJSC «Radiofizika» (Moscow); Deputy Head of Department, Moscow Aviation Institute (National Research University)

Design, computer simulation and measurement of a high efficiency multimode horn antenna with circular aperture is presented. Its aperture efficiency is about 90%. Such antennas can be used as elements of antenna arrays with limited field-of-view; in particular, for radars or spaceborne communication systems. The horn is designed using optimization procedure based on mode-matching analysis method. The characteristics of the horn are analyzed using a mode-matching method and frequency domain solver of CST Microwave Studio software. The horn was manufactured and its characteristics were measured. Measurement and simulation results are in good agreement. Radiation pattern agree up to −50 dB level. VSWR results have difference of 0.02 at levels 1.0 to 1.1. Gain results have difference of 0.1 dB, which was achieved by using an extrapolation technique for measurements at reduced distances. Also, simulation results of a spaceborne electrically scanned array with presented horn elements for a communication satellite are presented. The array is suitable for serving most of the visible surface of the Earth from geostationary orbit, and has good characteristics. The results confirm high efficiency of the considered antenna and high precision of computer simulation and measurement procedures.

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