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A Multiband Millimeter-Wave Rectangular Dielectric Resonator Antenna with Omnidirectional Radiation Using a Planar
Tarek S Abdou1, Salam K Khamas1
1Communications Research Group, Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S1 3JD, UK.
Micromachines
|September 28, 2023
Summary
This study introduces a novel millimeter-wave (mmWave) dielectric resonator antenna (DRA) with an omnidirectional pattern, achieved using a planar feed network. This versatile, multiband antenna is validated for on-body and off-body communications.
Area of Science:
- Electromagnetics and Wave Propagation
- Antenna Theory and Design
- Microwave Engineering
Background:
- Dielectric resonator antennas (DRAs) are widely used due to their desirable characteristics.
- Achieving omnidirectional radiation patterns from rectangular DRAs presents unique design challenges.
- Existing literature lacks reports on planar feed networks for omnidirectional radiation in rectangular DRAs.
Purpose of the Study:
- To present a novel millimeter-wave (mmWave) dielectric resonator antenna (DRA) with an omnidirectional radiation pattern.
- To demonstrate the efficacy of a planar feed network for achieving omnidirectional radiation from a rectangular DRA.
- To explore the multiband capabilities and radiation characteristics of the proposed antenna design.
Main Methods:
- Design and simulation of a rectangular dielectric resonator antenna (DRA).
- Integration of a planar feed network to excite specific resonant modes.
- Excitation of degenerate TE121/TE211 modes for omnidirectional radiation at 28.5 GHz.
- Excitation of the TE111 fundamental mode and feeding ring-slot resonance for broadside radiation at 17.5 GHz and 23 GHz.
Main Results:
- The proposed antenna achieved an omnidirectional pattern with 1.9% bandwidth and 4.3 dBi gain at 28.5 GHz.
- Triple-band operation was demonstrated, with distinct radiation patterns at different frequencies.
- Simulated results were validated through physical measurements, showing good agreement.
Conclusions:
- The novel planar feed network successfully enables omnidirectional radiation from a rectangular DRA.
- The proposed antenna exhibits versatile multiband operation suitable for various communication applications.
- The validated design offers a promising solution for on-body and off-body communication systems.
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