Title :
Can ultrawideband antennas be miniaturized effectively by dielectric loading?
Author :
Shi, Yifei ; Amert, Anthony K. ; Whites, Keith W.
Author_Institution :
Dept. of Electr. & Comput. Eng., South Dakota Sch. of Mines & Technol., Rapid City, SD, USA
Abstract :
A novel approach for miniaturization of disc monopole antennas is presented. The physical size of the antenna has been miniaturized by loading a dielectric material of high dielectric constant around the antenna in an intelligent manner. In order to maintain the impedance bandwidth characteristics, a spatial quarter wave transformer was applied. Simulations of the structure showed that the impedance bandwidth was conserved while the physical size of the structure was reduced by 58.4%.
Keywords :
dielectric materials; monopole antennas; ultra wideband antennas; dielectric loading; dielectric material; disc monopole antennas; high dielectric constant; impedance bandwidth characteristics; physical size; spatial quarter wave transformer; ultrawideband antennas; Bandwidth; Dielectrics; Impedance; Loaded antennas; Loading; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation in Wireless Communications (APWC), 2012 IEEE-APS Topical Conference on
Conference_Location :
Cape Town
Print_ISBN :
978-1-4673-0404-7
DOI :
10.1109/APWC.2012.6324924
