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Miniature Millimeter-Wave 5G Antenna Fabricated Using Anodized Aluminum Oxide for Mobile Devices
Jongsun Choi1, Jaehyun Choi1, Woonbong Hwang1
1POSTECH Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea.
ACS Omega
|October 19, 2020
Summary
A novel anodized aluminum oxide (AAO) antenna offers a miniaturized solution for 5G mobile devices. This innovative design achieves a compact size and high gain, paving the way for next-generation wireless technology.
Area of Science:
- Materials Science
- Electrical Engineering
- Electromagnetics
Background:
- Miniaturization of antennas is crucial for mobile devices.
- Conventional dielectric materials limit antenna size reduction.
- High dielectric constant materials are needed for compact antenna designs.
Purpose of the Study:
- To devise and demonstrate a miniature millimeter-wave 5G antenna using anodized aluminum oxide (AAO).
- To leverage AAO's high dielectric constant for antenna size reduction.
- To enhance design freedom in antenna fabrication for mobile applications.
Main Methods:
- Fabrication of a dielectric layer on an aluminum plate using AAO topology.
- Placement of the antenna pattern on the AAO dielectric layer.
- Characterization of antenna resonance frequency and gain.
Main Results:
- The AAO-based antenna achieved a significantly reduced size (1.87 mm × 2.34 mm).
- The antenna resonates at 29 GHz with a measured gain of 5.02 dBi.
- AAO's high dielectric constant (εr = 6.7) enabled miniaturization compared to PC or FR4.
Conclusions:
- The proposed AAO antenna is a viable solution for miniaturized 5G mobile devices.
- Precise control over dielectric layer dimensions enhances antenna design flexibility.
- The developed antenna technology supports the advancement of high-frequency wireless communication.
