Title :
Material perturbation analysis for frequency reconfigurable antennas
Author :
Yan, Jie-Bang ; Bernhard, Jennifer T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Abstract :
In this paper, we investigate material perturbation as a means to introduce frequency reconfigurability into microstrip patch antennas (MPAs) and Multiple-Input Multiple-Output dielectric resonator antennas (MIMO DRAs). A detailed analysis via eigenvalue perturbation has been carried out to determine the optimal material perturbation placement for maximum frequency agility. The results obtained agree well with those predicted by Harrington´s formula. The analysis presented is applicable to any antenna that can be modeled using a cavity model.
Keywords :
MIMO communication; antenna arrays; dielectric resonator antennas; eigenvalues and eigenfunctions; Harrington formula; MIMO DRA; MPA; eigenvalue perturbation; frequency reconfigurable antennas; material perturbation analysis; maximum frequency agility; microstrip patch antennas; multiple input multiple output dielectric resonator antennas; Dielectric resonator antennas; MIMO; Materials; Microstrip; Microstrip antennas; Resonant frequency;
Conference_Titel :
Antenna Technology (iWAT), 2011 International Workshop on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9133-9
DOI :
10.1109/IWAT.2011.5752365
