On the Two Segmented and High Aspect Ratio Rectangular Dielectric Resonator Antennas for Bandwidth Enhancement and Miniaturization

The goal of this communication is to maintain wide impedance bandwidth while miniaturizing a microstrip-fed dielectric resonator antenna (DRA). The approach of using high aspect ratio structures is proposed, discussed, and compared with the two segmented structures approach. Finite element method pa...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2009-09, Vol.57 (9), p.2775-2780
Main Authors: Rashidian, A., Klymyshyn, D.M.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Arrays
Bandwidth
Broadband antennas
Cross sections
Dielectric resonator antenna (DRA)
Dielectric resonator antennas
Dielectrics
Exact sciences and technology
Finite element methods
High aspect ratio
Impedance
Mathematical analysis
Microstrip antennas
Microstrip resonators
microstrip-fed
miniaturization
Parametric study
Permittivity
Radiocommunications
Resonance
Resonators
Telecommunications
Telecommunications and information theory
wideband antennas
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The goal of this communication is to maintain wide impedance bandwidth while miniaturizing a microstrip-fed dielectric resonator antenna (DRA). The approach of using high aspect ratio structures is proposed, discussed, and compared with the two segmented structures approach. Finite element method parametric study of high permittivity high aspect ratio structures is used to demonstrate how two appropriate resonant modes can be merged to obtain miniaturized antennas with broadband operation, stable radiation patterns, and low cross polarization levels. To show the effectiveness of the approach, a set of microstrip-fed two segmented and high aspect ratio DRAs is fabricated, characterized, and the results are compared with Ansoft HFSS simulations. A high aspect ratio DRA with cross section as small as 0.08lambda by 0.12lambda has better than 11 percent bandwidth and is especially attractive for compact array applications.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2009.2027351