Wideband stair-shaped dielectric resonator antennas
Wideband stair-shaped dielectric resonator antennas
- Author(s): R. Chair ; A.A. Kishk ; K.F. Lee
- DOI: 10.1049/iet-map:20060029
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- Author(s): R. Chair 1 ; A.A. Kishk 2 ; K.F. Lee 2
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View affiliations
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Affiliations:
1: Jaybeam Wireless, Hickory, USA
2: Department of Electrical Engineering, Center for Applied Electromagnetic Systems Research (CAESR), University of Mississippi, University, USA
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Affiliations:
1: Jaybeam Wireless, Hickory, USA
- Source:
Volume 1, Issue 2,
April 2007,
p.
299 – 305
DOI: 10.1049/iet-map:20060029 , Print ISSN 1751-8725, Online ISSN 1751-8733
Wideband stair-shaped dielectric resonator antenna (DRAs) are designed. Wide bandwidths are achieved with one-step or two-steps stair geometries. Cricular and square cross-sections are discussed with two different excitation methods: coaxial feed and aperture coupled. The DRAs are designed in the X-band. An impedance bandwidth (S11<−10 dB) of 54.3% is obtained with the two-steps stair-shaped DRA. The antennas have broadside radiation patterns in all cases across the matching band. In addition, embedding the base into another dielectric material reduces the size of the stair-shaped DRA. Simulation results are compared with measurements and reasonable agreement is obtained.
Inspec keywords: dielectric resonator antennas; broadband antennas; antenna radiation patterns
Other keywords:
Subjects: Single antennas; Other dielectric applications and devices
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