Title :
Millimeter-wave Fresnel zone planar lens and antenna
Author :
Hristov, H.D. ; Herben, M.H.A.J.
Author_Institution :
Dept. of Radiotech., Tech. Univ. of Varna, Bulgaria
Abstract :
A new variety of millimeter-wave Fresnel zone planar lens with enhanced focusing quality is described. Each full-wave zone is divided into four quarter-wave subzones covered by equal in thickness dielectric rings having different permittivities. More precise expression for the lens thickness is deduced. On the base of this planar lens configuration a Fresnel zone lens antenna with about 52% aperture efficiency frequency of 62.1 GHz is developed and examined theoretically.<>
Keywords :
Fresnel diffraction; focusing; lens antennas; lenses; millimetre wave antennas; permittivity; zone plates; 52 percent; 62.1 GHz; Fresnel zone lens antenna; Fresnel zone planar lens; MM-wave antenna; dielectric rings; enhanced focusing quality; lens thickness; millimeter-wave lens; permittivities; Antenna theory; Aperture antennas; Dielectrics; Frequency; Fresnel reflection; Lenses; Microwave antennas; Millimeter wave technology; Optical design; Permittivity;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406026
