Title :
Influence of thickness of the rings and height from the ground plane on the input characteristics of the multiple ring monopole antennas
Author :
Mirkamali, Ali ; Hall, Peter S.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran
Abstract :
In this paper the effects of changing the thickness of the rings and height from the ground on the return loss of the multiple ring monopole antenna are presented. It is experimentally shown that the changing of the thickness of the rings causes a frequency shift at the fourth and the fifth bands but it does not have a significant effect on the lower bands. In addition, better matching at higher frequency bands can be obtained for smaller height from the ground plane but it does not affect on the lower frequency bands
Keywords :
monopole antennas; frequency shift; ground plane; higher frequency bands; input characteristics; multiple ring monopole antennas; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Costs; Frequency; Impedance; Loss measurement; Wireless communication;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1710879
