3-D Printed Monolithic GRIN Dielectric-Loaded Double-Ridged Horn Antennas

Monolithic integration of 3-D printed gradient index (GRIN) dielectric loading with a double-ridged rectangular horn standard gain horn (SGH) and its impact on antenna performance are demonstrated. Results show that the GRIN loaded horns improve sidelobe levels (SLLs) and beam symmetry, while mainta...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2020-01, Vol.68 (1), p.533-539
Main Authors: Hoel, Karina V., Ignatenko, Maxim, Kristoffersen, Stein, Lier, Erik, Filipovic, Dejan S.
Format: Article
Language:English
Subjects:
3-D printed
Apertures
Bandwidths
Broadband
copper plating
dielectric loading
Dielectrics
Fabrication
Fuel consumption
gradient index (GRIN)
Horn antennas
horns
Loaded antennas
Loading
monolithic
Permittivity
selective laser sintering (SLS)
Sidelobes
Three dimensional printing
Unmanned aerial vehicles
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Description
Summary:Monolithic integration of 3-D printed gradient index (GRIN) dielectric loading with a double-ridged rectangular horn standard gain horn (SGH) and its impact on antenna performance are demonstrated. Results show that the GRIN loaded horns improve sidelobe levels (SLLs) and beam symmetry, while maintaining good impedance match and relatively high radiation efficiency over more than an octave bandwidth from 7.5 to 18 GHz. Moreover, they have low weight and show good robustness to fabrication imperfections. This work paves the way for seamless integration of complex wideband antennas in 3-D printed systems such as unmanned aerial vehicles (UAVs).
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2019.2938563