Title :
Ultra wideband slot spiral with dielectric loading: measurements and simulations
Author :
Filipovic, D.S. ; Nurnberger, M. ; Volakis, J.L.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The performance of a very thin conformal cavity backed slot spiral antenna for various dielectric loadings inside and outside the cavity is considered. An improved FE-BI code is used to numerically predict and estimate the antenna performance for various antenna parameters. Near-field data are used to estimate the miniaturization effects for various dielectric loadings. These data are correlated to the miniaturization effects extracted from the antenna gain. An archimedean slot spiral antenna 15.2 cm in diameter and 1.2 cm thin is designed, built and measured and results are compared to the simulation.
Keywords :
UHF antennas; boundary integral equations; dielectric-loaded antennas; finite element analysis; slot antennas; spiral antennas; 15.2 cm; FE-BI code; antenna gain; antenna performance; archimedean slot spiral antenna; dielectric loading; miniaturization effects; near-field data; thin conformal cavity backed slot spiral antenna; ultra wideband slot spiral; Antenna measurements; Antennas and propagation; Arm; Broadband antennas; Data mining; Dielectric measurements; Loaded antennas; Propagation constant; Slot antennas; Spirals;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874510
