Wideband simple cylindrical dielectric resonator antennas

Bandwidths of the coaxial fed and aperture coupled cylindrical dielectric resonator antennas (DRAs) with broadside radiation patterns are enhanced by exciting the HEM/sub 11/spl Delta// (1</spl Delta/<2) mode at a frequency close to the HEM/sub 11/spl delta// (0</spl delta/<1) mode. Both...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 15; no. 4; pp. 241 - 243
Main Authors Chair, R., Kishk, A.A., Lee, K.F.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.04.2005
Institute of Electrical and Electronics Engineers
Subjects
Antenna measurements
Antenna radiation patterns
Antennas
Aperture antennas
Aperture coupled antennas
Apertures
Applied sciences
Bandwidth
Broadband antennas
Circuit properties
Coaxial components
Dielectric resonator antennas
dielectric resonator antennas (DRAs)
Dielectrics
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Geometry
Microwaves
Noise levels
Oscillators, resonators, synthetizers
Radiocommunications
Resonant frequencies
Resonant frequency
Resonators
Telecommunications
Telecommunications and information theory
Wideband
Wide band
Resonance frequency
Cylindrical antenna
Dielectric resonator antennas
Radiation pattern
Cylindrical resonator
Impedance
dielectric resonator antennas (DRAs)
Cylindrical shape
Coupled resonator
s-Antennas
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Summary:Bandwidths of the coaxial fed and aperture coupled cylindrical dielectric resonator antennas (DRAs) with broadside radiation patterns are enhanced by exciting the HEM/sub 11/spl Delta// (1</spl Delta/<2) mode at a frequency close to the HEM/sub 11/spl delta// (0</spl delta/<1) mode. Both HEM/sub 11/spl delta// and HEM/sub 11/spl Delta// modes have similar broadside radiation patterns. Measured impedance bandwidths as much as 26.8% (S/sub 11/<-10 dB) are achieved for the coaxial fed DRA and 23.7% for the aperture coupled DRA. These bandwidths are comparable to those obtained using stacked DRAs. The resonant frequency of the HEM/sub 11/spl Delta// mode can be adjusted by the radius (r) to height (h) ratio of the cylindrical DRA. A wide bandwidth is obtained when this ratio equals to 0.329.
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ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2005.845719