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A Fast Approach to Near-Field Synthesis of Transmitarrays

Author:
Loredo Rodríguez, SusanaUniovi authority; León Fernández, GermánUniovi authority; González Plaza, EnriqueUniovi authority
Subject:

Near-field synthesis, fast Fourier transform, transmitarray antennas, dielectric lenses

Publication date:
2021-05
Publisher version:
http://dx.doi.org/10.1109/LAWP.2021.3058847
Citación:
IEEE Antennas and Wireless Propagation Letters, vol. 20, No. 5, p. 648-652 (2021); doi: 10.1109/LAWP.2021.3058847
Descripción física:
p. 648-652
Abstract:

We present an efficient approach to near-field synthesis of transmitarray antennas in which a planar aperture model is adopted both for the transmitarray and the field generated by it on a near plane. The necessary phases on the transmitarray are then obtained from the far field corresponding to the desired near field using simple operations such as direct and inverse fast Fourier transforms. This, together with the fact that few iterations are needed to find a valid solution, makes this approach a simple and fast alternative to near-field synthesis of this type of antennas. The proposed approach has been experimentally validated through the measurement of a manufactured prototype.

We present an efficient approach to near-field synthesis of transmitarray antennas in which a planar aperture model is adopted both for the transmitarray and the field generated by it on a near plane. The necessary phases on the transmitarray are then obtained from the far field corresponding to the desired near field using simple operations such as direct and inverse fast Fourier transforms. This, together with the fact that few iterations are needed to find a valid solution, makes this approach a simple and fast alternative to near-field synthesis of this type of antennas. The proposed approach has been experimentally validated through the measurement of a manufactured prototype.

URI:
http://hdl.handle.net/10651/60651
ISSN:
1536-1225
DOI:
10.1109/LAWP.2021.3058847
Patrocinado por:

Ministerio de Ciencia e Innovación, Gobierno del Principado de Asturias

Id. Proyecto:

TEC2017-86619-R (ARTEINE)

GRUPIN-IDI-2018-000191

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