Gain Improvement of Rectangular Dielectric Resonator Antenna by Engraving Grooves on Its Side Walls

A new technique for increasing the boresight gain of a rectangular dielectric resonator antenna (DRA) operating at its fundamental radiating TE y 111 mode is introduced. The idea is to increase the radiations from the side walls of the DRA compared to that of its top wall by engraving grooves on the...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017, Vol.16, p.2167-2170
Main Authors: Fakhte, Saeed, Oraizi, Homayoon, Matekovits, Ladislau
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Current density
Dielectric resonator
dielectric resonator antenna (DRA)
Dielectric resonator antennas
Dielectrics
Electric fields
Engraving
Gain
Grooves
Impedance
Magnetic separation
Radio antennas
Repair & maintenance
Resonators
Walls
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Summary:A new technique for increasing the boresight gain of a rectangular dielectric resonator antenna (DRA) operating at its fundamental radiating TE y 111 mode is introduced. The idea is to increase the radiations from the side walls of the DRA compared to that of its top wall by engraving grooves on the side walls. A model based on the array theory is developed to explain the high-gain nature of the antenna. The measured results demonstrate that the proposed antenna achieves an impedance bandwidth of 21% over a band of 3.24-4 GHz, with a maximum gain of 9.6 dB. This is significantly higher with respect to available data in the literature.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2702584