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Circular Patch Fed Rectangular Dielectric Resonator Antenna with High Gain and High Efficiency for Millimeter Wave 5G
Abinash Gaya1, Mohd Haizal Jamaluddin1, Irfan Ali1
1Wireless Communication Centre, School of Electrical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia.
Sensors (Basel, Switzerland)
|April 30, 2021
Summary
A new dielectric resonator antenna fed by a metallic patch antenna offers high gain (8.04 dB) and efficiency (96%) for 5G indoor small cells. This millimeter wave antenna operates efficiently in the 24.82-25.94 GHz band.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Antenna Theory
Background:
- Millimeter wave frequencies are crucial for next-generation wireless communication, including 5G.
- Dielectric Resonator Antennas (DRAs) offer advantages like high gain and efficiency.
- Efficient feeding mechanisms are essential for optimizing DRA performance at millimeter wave frequencies.
Purpose of the Study:
- To propose and analyze a novel feeding method for a dielectric resonator antenna using a metallic circular patch antenna.
- To investigate the impact of different slot apertures (rectangular vs. cross slot) on antenna performance.
- To optimize the antenna design for 5G indoor small cell applications in the millimeter wave band.
Main Methods:
- A ceramic-based rectangular dielectric resonator antenna (permittivity 10) was designed on a Rogers RT/Duroid substrate (permittivity 2.2).
- A metallic circular patch antenna was used as the feeding element, coupled via a cross slot aperture on the ground plane.
- Parametric studies and simulations were performed to analyze the evolution of antenna performance with varying slot dimensions and types.
Main Results:
- The cross-slot aperture significantly enhanced the antenna's gain from 6.38 dB to 8.04 dB compared to a rectangular slot.
- The designed Dielectric Resonator Antenna (DRA) achieved a peak gain of 8.04 dB with a bandwidth of 1.12 GHz (24.82-25.94 GHz) at 26 GHz.
- A high radiation efficiency of 96% was achieved, with maximum power radiated towards the broadside direction.
Conclusions:
- The proposed cross-slot aperture feeding mechanism effectively enhances coupling and gain for DRAs at millimeter wave frequencies.
- The designed antenna exhibits excellent performance characteristics, including high gain, wide bandwidth, and high efficiency, making it suitable for 5G indoor small cells.
- The optimized antenna design demonstrates potential for reliable high-frequency wireless communication applications.
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