Dielectric Resonator Antenna in a Polarization Filtering Cavity for Dual Function Applications

A new concept of dual mode operation for oscillation and radiation characteristics using single dielectric resonator enclosed by modified rectangular cavity has been developed. High unloaded quality factor of 2700 at 2.54 GHz and omni-directional radiation patterns with radiation bandwidth of 5.13%...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2008-12, Vol.56 (12), p.3079-3085
Main Authors: Hady, L.K., Kajfez, D., Kishk, A.A.
Format: Article
Language:English
Subjects:
Active antennas
Antenna radiation patterns
Antennas
Applied sciences
Bandwidth
Cavity resonators
Circuit properties
Coaxial components
deembedding
dielectric resonator antenna
Dielectric resonator antennas
dielectric resonator oscillator
Dielectrics
dual mode operation
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Filtering
Microstrip
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
Oscillations
Oscillators, resonators, synthetizers
Polarization
Probes
Q factor
Q factors
Radiocommunications
reaction-type Q factor measurement
Resonator filters
Resonators
Telecommunications
Telecommunications and information theory
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Description
Summary:A new concept of dual mode operation for oscillation and radiation characteristics using single dielectric resonator enclosed by modified rectangular cavity has been developed. High unloaded quality factor of 2700 at 2.54 GHz and omni-directional radiation patterns with radiation bandwidth of 5.13% around 3.31 GHz were achieved simultaneously. The high- Q mode is coupled to a microstrip line and the low- Q mode is coupled to a coaxial probe with capacitive plate. Reaction-type measurement of the unloaded Q factor with the help of a network analyzer is described in details. Measurements of the scattering parameters and of the radiation patterns were carried out to verify the simulation results.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2008.2006806