Title :
Radiation of a planar spiral antenna above a double-dielectric loaded ground plane
Author :
Tigelis, I. ; Kaklamani, D. ; Uzunoglu, N.
Author_Institution :
Inst. of Commun. & Comput., Nat. Tech. Univ. of Athens, Greece
fDate :
June 28 1993-July 2 1993
Abstract :
The radiation properties of a spiral antenna above a double-dielectric loaded ground plane are investigated analytically. The electromagnetic field components in the far field region are derived by using the Green´s function formulation, while an appropriate model for the surface current distribution on the spiral antenna is used. This type of antenna has been found to be convenient for mobile telecommunication applications, since it is a wideband, circular-polarized, and omnidirectional one, with no radiation at the vertical and the horizontal axes, no side lobes, and a main lobe at an elevation angle that corresponds to a large region of latitudes. For a central operating frequency at 1.6 GHz, the antenna has been found to be significantly compact and therefore easily mounted on a car ceiling, without causing noticeable modifications to its appearance.<>
Keywords :
Green´s function methods; antenna radiation patterns; current distribution; dielectric-loaded antennas; mobile antennas; mobile satellite communication; spiral antennas; 1.6 GHz; Green´s function; double-dielectric loaded ground plane; main lobe; mobile telecommunication; planar spiral antenna; surface current distribution; Antenna accessories; Brain modeling; Broadband antennas; Current distribution; Electromagnetic fields; Electromagnetic modeling; Green´s function methods; Loaded antennas; Mobile antennas; Spirals;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385380
