Title :
General transmission line for spherical annular microstrip antennas
Author_Institution :
Dept. of Electr. Eng., Mississippi Univ., University, MS, USA
fDate :
June 28 1993-July 2 1993
Abstract :
The input impedance of the spherical-annular microstrip antenna is computed and compared with the input impedance of the planar structure when the sphere radius is large. The antenna is modeled as a transmission line joining the radiating apertures, which are characterized by wall admittances. The radiation pattern of the spherical circular antenna is calculated numerically using a computer code suitable for bodies of revolution. The radiation patterns of this antenna when the radius of the sphere is 10 cm are shown.<>
Keywords :
antenna radiation patterns; electric impedance; equivalent circuits; loop antennas; method of moments; microstrip antennas; transmission line matrix methods; 10 cm; computer code; input impedance; planar structure; radiation pattern; spherical-annular microstrip antenna; transmission line; wall admittances; Antenna theory; Apertures; Bandwidth; Dielectric substrates; Distributed parameter circuits; Impedance; Microstrip antennas; Patch antennas; Transmission line antennas; Transmission line theory;
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.1993.385194
