@misc{10481/77932,
year = {2022},
url = {https://hdl.handle.net/10481/77932},
abstract = {This paper presents an H-plane SIW horn antenna whose
directivity is enhanced using holey unit cells along the horn flaring. By
wisely drilling the horn antenna, it is possible to reduce the phase error in
the aperture which is a common problem in horn antennas if the optimum
dimensions are not employed. An analysis of the distribution of the unit
cells along the horn antenna has been carried out to achieve the desired
equivalent refractive indices. By changing the hole radius, different
equivalent refractive indices can be tuned with a wideband performance.
This fact enables the implementation of a collimation zone inside the horn
antenna which transforms the pseudo-circular wavefront into a quasiplanar
one in the radiating aperture. The produced directivity is similar
to the horn antenna with the optimum dimensions but a longitudinal
reduction of 53.7% and a higher realized gain are achieved. A holey
SIW horn antenna is designed and manufactured. The measured results
show an impedance bandwidth performance below -10 dB from 34.3
GHz to 44.5 GHz (25.9%) with a realized gain above 10 dBi. The gain
difference regarding a SIW horn antenna without the collimation zone
is about 2-3 dBi in the operating frequency range.},
keywords = {Antenna aperture},
keywords = {Holey unit cell},
keywords = {Horn antenna},
keywords = {Phase front correction},
keywords = {Substrate integrated waveguide (SIW)},
title = {Holey SIW Horn Antenna Based on an H-plane Lens-wise Wavefront Collimation},
doi = {10.36227/techrxiv.21316668.v1},
author = {Biedma Pérez, Andrés and Padilla De La Torre, Pablo and Segura Gómez, Cleofás and Palomares Caballero, Ángel},
}