Low-Profile Highly Directive 2D-Beam-Steering Antenna in Ka-band with 3D-printed All-dielectric Sub-wavelength Deflectors
Authors:
- 27 September 2022
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 852-855
Abstract
An elegant combination of a large-aperture planar radiating panel and a 2D-scanning part, implemented through a pair of 3D-printed sub-wavelength deflectors, is presented in this paper to demonstrate a low-profile 2D-scanning antenna system in Ka-band. A 28-cm-diameter prototype was manufactured, with in particular the dielectric deflectors fabricated by 3D printing of a high-permittivity and low-loss composite. The total height of the antenna system is only 4 cm, corresponding to 3.8 wavelengths at 29 GHz. The antenna system demonstrates a steering capacity up to 66° in elevation and 360° in azimuth, with a measured realized gain of 33 dBi at 0° and 27.4 dBi at 66° scan angle at 29 GHz. The 3dB-bandwidth is 6.5%, covering the 27.75-29.6GHz range. The measured results validate the simulated steering performance of the system with good agreement and confirm the advantage of using this concept for achieving low-cost, low-profile, lightweight, and simple-configuration 2D-beam-scanning antenna.Keywords
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