Investigation of low-profile fresnel zone plate antennas

Abstract

This article presents low-profile configurations of the Fresnel zone plate antenna at Ka-band. The investigation involved progressively reducing the focal distance of the antenna through simulations and observing the effect on the directivity, radiation patterns, and aperture efficiency. The number of metal zones was also varied in the simulations. It was found that focal distances below 0.75λ yielded little more directivity than the feed itself. With a single zone, the 1.25λ focal distance achieved the highest overall aperture efficiency of 24%, which was a significant improvement over the larger focal distance cases. Measurements were performed to verify the simulated results.

Original language	English
Pages (from-to)	2039-2043
Number of pages	5
Journal	Microwave and Optical Technology Letters
Volume	50
Issue number	8
DOIs	https://doi.org/10.1002/mop.23593
Publication status	Published - Aug 2008
Externally published	Yes

Keywords

Fresnel zone plate antenna
Low-profile

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1002/mop.23593

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title = "Investigation of low-profile fresnel zone plate antennas",

abstract = "This article presents low-profile configurations of the Fresnel zone plate antenna at Ka-band. The investigation involved progressively reducing the focal distance of the antenna through simulations and observing the effect on the directivity, radiation patterns, and aperture efficiency. The number of metal zones was also varied in the simulations. It was found that focal distances below 0.75λ yielded little more directivity than the feed itself. With a single zone, the 1.25λ focal distance achieved the highest overall aperture efficiency of 24%, which was a significant improvement over the larger focal distance cases. Measurements were performed to verify the simulated results.",

keywords = "Fresnel zone plate antenna, Low-profile",

author = "Stout-Grandy, {S. M.} and A. Petosa and Minin, {I. V.} and Minin, {Oleg V.} and Wight, {J. S.}",

year = "2008",

month = aug,

doi = "10.1002/mop.23593",

language = "English",

volume = "50",

pages = "2039--2043",

journal = "Microwave and Optical Technology Letters",

issn = "0895-2477",

publisher = "John Wiley and Sons Inc.",

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AU - Stout-Grandy, S. M.

AU - Petosa, A.

AU - Minin, I. V.

AU - Minin, Oleg V.

AU - Wight, J. S.

PY - 2008/8

Y1 - 2008/8

N2 - This article presents low-profile configurations of the Fresnel zone plate antenna at Ka-band. The investigation involved progressively reducing the focal distance of the antenna through simulations and observing the effect on the directivity, radiation patterns, and aperture efficiency. The number of metal zones was also varied in the simulations. It was found that focal distances below 0.75λ yielded little more directivity than the feed itself. With a single zone, the 1.25λ focal distance achieved the highest overall aperture efficiency of 24%, which was a significant improvement over the larger focal distance cases. Measurements were performed to verify the simulated results.

AB - This article presents low-profile configurations of the Fresnel zone plate antenna at Ka-band. The investigation involved progressively reducing the focal distance of the antenna through simulations and observing the effect on the directivity, radiation patterns, and aperture efficiency. The number of metal zones was also varied in the simulations. It was found that focal distances below 0.75λ yielded little more directivity than the feed itself. With a single zone, the 1.25λ focal distance achieved the highest overall aperture efficiency of 24%, which was a significant improvement over the larger focal distance cases. Measurements were performed to verify the simulated results.

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