Novel broadband dielectric resonator antennas fed through double-bowtie-slot excitation scheme
Date
2007
Authors
Almpanis, G.
Fumeaux, C.
Vahldieck, R.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Applied Computational Electromagnetics Society Journal, 2007; 22(1):96-104
Statement of Responsibility
G. Almpanis, C. Fumeaux and R. Vahldieck
Conference Name
Abstract
This paper discusses the concept and the realization of novel wideband dielectric resonator antennas (DRAs), in which a dielectric cylinder or parallelepiped are fed from a microstrip line through two parallel bowtie-slots. The concept of partial independence of the slot modes from the dielectric resonator mode is exploited in such a way that the resonances of the slot modes and of the DRA are designed to occur at different frequencies. As a result, the bandwidth of the DRA is significantly improved, while stability in the radiation patterns and low cross-polarization are maintained. Finally, a study is performed concerning the influence of the gap between the dielectric resonator and the ground plane upon the overall performance of the DRA. Comparison of the results from a commercial software tool (HFSS®) and from the Finite-Volume Time-Domain (FVTD) method is made. © 2007 ACES.