Title :
Variety of cylindrical Fresnel zone plate antennas
Author_Institution :
Dept. of Radiotech., Tech. Univ. of Varna, Bulgaria
Abstract :
Variations on the half-open cylindrical Fresnel zone plate (CFZP) antenna have been studied in this paper. Starting from the Ji and Fujita´s (1996) CFZP antenna model with about 5 dB gain we designed antennas with much higher gain: up to 8.5 dB for the same size quarter-wave antenna, and up to 11 dB for the same height, but 3 times larger in diameter, quarter-wave antenna. Other CFZPs, namely, strip-type and cross-type were sketched, and a non-symmetrical CFZP antenna was proposed and studied briefly.
Keywords :
antenna radiation patterns; lens antennas; zone plates; 11 dB; 8.5 dB; antenna gain; cross-type antenna; cylindrical Fresnel zone plate antennas; half-open antenna; non-symmetrical antenna; phase reversal antenna; quarter-wave antenna; radiation patterns; strip-type antenna; Antenna radiation patterns; Aperture antennas; Base stations; Dielectrics; Feeds; Fresnel reflection; Lenses; Local area networks; Polarization; Wireless LAN;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789423
