Asymmetrical 4x2 Array Microstrip Antenna Using Glass Fiber-Ramie-Alumina-Carbon Composite Substrate for 5G Mobile Communication

This paper proposes an asymmetrical 4x2 array antenna for 5G centimeter-wave (cm-wave) communication systems. To optimize substrate efficiency, we employed a multi-element-antenna array combination using sixteen elements. Our substrate optimization involved a Glass Fiber-Ramie-Alumina Composite with a permittivity of 9.4. The proposed asymmetrical 4x4 array operates within the 3.5 GHz frequency band for 5G cm-wave applications. The individual antenna element achieves a gain of 5.23 dBi, which increases to 10.9 dBi when configured in an eight-element array. The optimized antenna substrate offers several advantages, including improved electrical, mechanical, and chemical properties. This results in a substantial reduction in leakage and attenuation, substantially simplified fabrication processes, and markedly reduced manufacturing costs, making it well-suited for 5G communications. The reduction in manufacturing costs is particularly significant, as it can contribute to overall affordability and widespread adoption of 5G technology. Additionally, the improved electrical and mechanical properties of the substrate ensure reliable and efficient performance in various environmental conditions. Furthermore, the proposed antenna design is compact and lightweight, making it suitable for various applications, including mobile devices, wearable technology, and Internet of Things (IoT) devices. The combination of these advantages positions the proposed antenna as a promising candidate for future 5G communication systems, particularly in scenarios where low-cost, high-performance, compact form factors, efficient power consumption, and robustness against interference are essential.