Low-Profile Radially Corrugated Horn Antenna

This letter proposes a low-profile horn antenna with radial corrugations. The depth and width of the corrugations are suitably chosen to excite the mode HE 11 in the corrugated section. This mode spreads uniformly across the whole aperture, thereby maximizing the radiating area and the aperture effi...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017-01, Vol.16, p.3180-3183
Main Authors: Hon Ching Moy-Li, Sanchez-Escuderos, Daniel, Antonino-Daviu, Eva, Ferrando-Bataller, Miguel
Format: Article
Language:English
Subjects:
Antenna measurements
Antenna radiation patterns
Apertures
Corrugated horn antenna
Cutoff frequency
Gain
hard surfaces
Horn antennas
Impedance
reflector antenna feeds
satellite antennas
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Summary:This letter proposes a low-profile horn antenna with radial corrugations. The depth and width of the corrugations are suitably chosen to excite the mode HE 11 in the corrugated section. This mode spreads uniformly across the whole aperture, thereby maximizing the radiating area and the aperture efficiency. The good polarization purity of mode HE 11 provides a good cross-polar level and a low sidelobe level. The structure is fed by a circular waveguide with two matching elements on the feeding plane that minimize the return loss level. A prototype has been fabricated and measured to operate in the Ku-band. The prototype, with a height of just 6.9 mm, i.e., 0.3λ 0 , provides a maximum gain above 12.2 dBi and an aperture efficiency better than 72% within the operating frequency band.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2767182