Title :
Conical Double-Dielectric Fresnel Zone Lens and Antenna
Author :
Hristov, H.D. ; Kamburov, L.P. ; Urumov, J.R. ; Feick, R. ; Atanassov, A.I. ; Grote, W.
Author_Institution :
Departamento de Electronica, Univ. Tecnica Federico Santa Maria, Valparaiso
fDate :
5/1/2007 12:00:00 AM
Abstract :
A conical double-dielectric phase-reversal Fresnel-zone plate (FZP) lens is introduced. We present the lens design equations as functions of cone opening angle. As an example, the phase-reversal lens has been applied to four millimeter-wave antennas with different lens opening semi-angles: 45deg, 60deg, and 75deg (conical lenses) and 90deg (plane lens). The radiation characteristics of these antennas have been calculated and contrasted one-to-another, and to those with the same semi-angles and linear dimensions binary (half-open) FZP lens antennas. The double-dielectric FZP conical arrangement can serve as a conical antenna lens and a radome simultaneously
Keywords :
antenna radiation patterns; conical antennas; lens antennas; FZP lens antennas; Fresnel zone plate lens; conical antenna lens; conical double-dielectric phase-reversal lens; conical lenses; lens design equations; millimeter-wave antennas; plane lens; Antenna theory; Dielectrics; Equations; Fresnel reflection; Geometry; Helium; Lenses; Optical design; Permittivity; Shape; Fresnel-zone plate (FZP) lens;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.895692
