Metasurface-Enabled Advanced Short Backfire Antenna

Binion, J. Daniel; Lier, E.; Werner, Douglas H.; Hand, Thomas H.; Jiang, Zhi Hao; Werner, Pingjuan L.

doi:10.1109/tap.2020.2967284

Cited by 4 publications

(1 citation statement)

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“…For aperture sizes up to 2λ0, many candidate antenna solutions with excellent RF performance and low profile have been developed. These solutions include the Scrimp horn [4,5], the short backfire antenna [6][7][8][9] or the stacked Fabry-Perot cavity antenna [10]. However, for the aforementioned radiating elements, the bandwidth and the aperture efficiency decrease steadily as the radiating aperture is increased.…”

Section: Introductionmentioning

confidence: 99%

Quad-Furcated Profiled Horn: The Next Generation Highly Efficient GEO Antenna in Additive Manufacturing

Stoumpos

Fraysse

Goussetis

et al. 2022

IEEE Open J. Antennas Propag.

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A novel compact and highly efficient dual-polarized horn-like antenna is presented. It exploits a radiating aperture that is fed by four smaller waveguides via a quad-furcated junction. The antenna also comprises the full feed network for the feed waveguides including an integrated 4-way orthomode power divider. Design principles are described in detail and illustrated by means of an example involving an antenna with aperture size of 2.6λ0×2.6λ0 (λ0 the wavelength at the central frequency of operation) intended primarily for Geostationary Orbit (GEO) satellites. The antenna feed was designed to comply with the Additive Manufacturing rules and exhibits aperture efficiency levels close to the theoretical maximum ones over the entire transmit Ku band (10.7 -12.75 GHz), while at the same time its profile is highly compact (6.4λ0). The measured results of a prototype 3D-printed in Selective Laser Melting (SLM) verified experimentally the calculated high aperture efficiency (over 90%). The total antenna feed attains return loss > 19 dB and maximum cross-polarization isolation (XPI) > 24 dB over a bandwidth of 18%. In light of the favorable electrical performances and compact size, the proposed solution constitutes an appealing alternative to profiled (or spline) horns for satellite antenna systems used either as reflector feeds or direct radiating arrays.

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