Journal of Radio Electronics. eISSN 1684-1719. 2025. №11

Full text in Russian (pdf)

DOI: https://doi.org/10.30898/1684-1719.2025.11.43

ULTRAWIDEBAND OFFSET MIRROR ANTENNA

E.S. Nekrasov, E.V. Balzovsky, Y.I. Buyanov, V.I. Koshelev

Institute of High Current Electronics SB RAS
634055, Russia, Tomsk, Akademichesky ave., 2/3

The paper was received November 25, 2025.

Abstract. The results of numerical modeling of the characteristics of an ultrawideband offset mirror antenna are presented. The offset mirror is a cutout from a rotating paraboloid with a diameter of 1400 mm and a focal length of 700 mm. A combined antenna optimized for excitation by bipolar pulses with a duration of 1 ns was used as a feed. The radiation center and partial phase centers of the combined antenna are calculated using temporal and spectral techniques. The error of the feed installation is estimated, in which the intensity of the field radiated by the mirror antenna in the main direction is not less than 0.95 of the electric field strength when the radiation center of the feed is combined with the focus of the offset mirror. Estimates of the gain coefficients and the use of the offset mirror surface when excited by a combined antenna in the frequency range 0.5-2.5 GHz are obtained.

Key words: ultrawideband combined antenna, offset mirror antenna, bipolar pulse, radiation center, partial phase center.

Financing: the work was supported by the Ministry of Science and Higher Education of the Russian Federation (FWRM-2021-0002).

Corresponding author: Nekrasov Eduard Sergeevich, es.nekrasov@hcei.ru

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