Open AccessAxially Corrugated Feed Horn for the Next Generation Very Large Array (ngVLA) Band-5 Receiver
Author(s) -
S. Salem Hesari,
B. Veidt,
D. Henke,
B. DuVerneay,
J. Vijayamohanan,
C.G. Christodoulou,
W. Grammer,
A. Densmore
Publication year - 2025
Publication title -
ieee open journal of antennas and propagation
Language(s) - English
Resource type - Magazines
eISSN - 2637-6431
DOI - 10.1109/ojap.2025.3572811
Subject(s) - fields, waves and electromagnetics , communication, networking and broadcast technologies , aerospace
This paper introduces a novel axially corrugated feed horn designed for the ngVLA Band-5 receiver, covering the 30–50 GHz range with potential adaptability to nearby bands. The horn features a circular waveguide with a flared throat and six precisely engineered quarter-wavelength corrugations. This structure achieves exceptional performance, including a return loss better than 25 dB and an average aperture efficiency of 95.5% across the full bandwidth. Measurements confirm the simulated results, validating the design. Compared to existing solutions, this feed horn offers a unique combination of wide bandwidth, high efficiency, and excellent signal fidelity in a compact, easily manufacturable form. These advancements address multiple challenges in radio astronomy receiver design, supporting the next generation of high-sensitivity telescopes like the ngVLA.