Conical Double-Dielectric Fresnel Zone Lens and Antenna |
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| Authors: | Hristov H D Kamburov L P Urumov J R Feick R Atanassov A I Grote G |
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| Affiliation: | Departamento de Electronica, Univ. Tecnica Federico Santa Maria, Valparaiso; |
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| 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 |
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