Open AccessMetal‐only Fresnel zone plate antenna for millimetre‐wave frequency bands
Author(s) -
Gómez Josefa,
Tayebi Abdelhamid,
de Lucas Jesús,
Cátedra Felipe
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0196
Subject(s) - optics , zone plate , antenna (radio) , fresnel zone antenna , millimetre wave , aperture (computer memory) , antenna aperture , millimeter , materials science , physics , antenna measurement , radiation pattern , slot antenna , acoustics , electrical engineering , engineering , diffraction
A metal‐only Fresnel zone plate antenna (FZPA) to operate at millimetre wave frequency bands is presented in this work. The proposed antenna is a very attractive alternative to parabolic reflectors and reflectarrays because of its several advantages such as low profile, low cost, easy to manufacture and lossless. A centre‐fed Fresnel zone plate whose diameter is 300 mm has been designed and analysed at 75 GHz providing a gain of 44.29 dBi, an aperture efficiency of 48.42% and a cross‐polarised level lower than −40 dB for the diagonal plane ( ϕ = 45°). A second prototype has been designed and analysed from 54 to 68 GHz to evaluate the performance of the proposed antenna compared with an already published FZPA.