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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.1K
Electric-Field-Coupled Resonator Antenna for 5G Applications
Md Mushfiqur Rahman1, Md Shabiul Islam1, Mohammad Tariqul Islam2
1Faculty of Engineering, Multimedia University, Persiaran Multimedia, Cyberjaya 63100, Selangor, Malaysia.
Materials (Basel, Switzerland)
|August 12, 2022
Summary
This study presents a compact wideband patch antenna for 5G applications. Modifications to the antenna design achieved a 19.74% bandwidth and 1.15 dBi gain, suitable for mobile communications.
Area of Science:
- Electromagnetics and antenna design.
- Wireless communication systems.
- Metamaterials and novel resonator structures.
Background:
- Conventional LC (inductive-capacitive) structures offer resonance but suffer from low bandwidth and gain.
- The demand for compact, wideband antennas is increasing, especially for fifth-generation (5G) mobile communication systems operating at specific 3GPP bands.
- Existing antenna designs often require trade-offs between bandwidth, gain, and physical size.
Purpose of the Study:
- To design and validate a compact, wideband patch antenna with enhanced performance characteristics.
- To achieve improved bandwidth and gain for 5G applications through structural modifications and the addition of parasitic elements.
- To investigate the feasibility of using evolutionary techniques for antenna optimization.
Main Methods:
- A modified electric-field-coupled resonator with parasitic elements was designed.
- Evolutionary techniques were employed to optimize antenna parameters.
- Modifications included adjusting split width and ground plane dimensions.
- Parasitic elements were added to the microstrip feed line.
- A prototype was fabricated and its performance was measured.
Main Results:
- The proposed antenna achieved a compact size of 0.26 λL × 0.26 λL × 0.017 λL.
- An operating bandwidth of 19.74% for a voltage standing wave ratio (VSWR) of less than 2 (|S11| < −10 dB) was realized.
- A peak gain of 1.15 dBi was achieved.
- The antenna exhibited an omnidirectional radiation pattern in the horizontal plane and a dumbbell shape in the elevation plane.
- Cross-polarization levels were below -12 dB in both planes.
Conclusions:
- The modified electric-field-coupled patch antenna effectively achieves wideband operation and enhanced gain.
- The design modifications and parasitic elements are crucial for meeting 5G frequency band requirements.
- The fabricated prototype validates the simulation results, demonstrating a practical solution for compact wideband antenna applications.
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