High-Gain and Wide-Bandwidth Multilayer Printed Antenna Array for 5G Applications

Abstract

This study presents the design procedures and performances evaluation of an antenna array. Initially, a conventional patch antenna is developed and validated for operation at 28GHz. Subsequently, an antenna design is introduced, consisting of the patch antenna printed on a Foam substrate layer with a thickness of 0.5mm sandwiched between two identical Rogers RT 5880 substrates. This multilayer antenna configuration is optimized to achieve improved characteristics. Additionally, a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$1 \times 2$</tex> antenna array is designed based on the multilayer substrate to further enhance performances. Simulation results demonstrate improved bandwidth, gain, and directivity for this antenna. A Benchmark comparison with state-of-the-art antenna structures for the 5G applications reveals the competitive radiation performances of the proposed <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$1 \times 2$</tex> antenna array.