Abstract

With the increasing demand for high-speed and reliable communication in 5G networks, efficient antenna design for the sub-6 GHz band has become a crucial research area. Slotted patch antennas offer significant advantages such as compact size and wide bandwidth, making them suitable for 5G-enabled devices. However, achieving high gain, broad bandwidth, and stable radiation characteristics within the compact form factor remains challenging, especially in the 3.5–4.5 GHz range used for sub-6 GHz 5G. This work presents a novel slotted hexagonal patch antenna structure designed to operate efficiently within the 3.3–4.2 GHz frequency range. The design introduces a unique hexagonal geometry with symmetrical slotting and ground plane optimization to enhance return loss, bandwidth, and gain. Simulation using HFSS yielded a peak gain of 5.3 dBi, a return loss of -32 dB at 3.8 GHz, and a bandwidth of 850 MHz. The design also achieved a radiation efficiency of 92.4%, and a VSWR of 1.1.

Authors

K. Kayalvizhi¹, S. Ramesh²
Sri Sairam Engineering College, India¹, SRM Valliammai Engineering College, India²

Keywords

5G Antennas, Slotted Patch, Sub-6 GHz, Hexagonal Geometry, HFSS Simulation