Millimeter Wave Dual Band (28GHZ/38GHZ) Microstrip Patch Antenna Design with High Gain for 5G Applications

Abstract

Our paper presents a comprehensive analysis of the performance of a novel microstrip patch antenna design, focusing on its suitability for dual-band operation at 28 GHz and 38 GHz. Through rigorous CST simulations, critical parameters such as S-parameters, bandwidth, VSWR, directivity, gain, radiation patterns, and radiation efficiency are evaluated. The results reveal promising performance characteristics, including low return loss values of -35 dB at 28 GHz and -46 dB at 38 GHz, indicating strong impedance matching and efficient power transfer. The achieved bandwidths of 1.03 GHz and 1.99 GHz at 28 GHz and 38 GHz, respectively, exceed typical requirements for wireless communication systems, demonstrating robust performance and potential for future frequency expansions. VSWR values close to ideal at both frequencies further validate the antenna's efficiency in radiating signals within the dual-band spectrum. Directivity values of 7.655 dBi at 28 GHz and 8.213 dBi at 38 GHz signify directional radiation capabilities, enhancing communication range and reliability. Additionally, analysis of gain values shows satisfactory performance across both bands, with slight variations between frequencies. Radiation pattern analysis confirms effective radiation concentration in desired directions, with minimal energy leakage. High radiation efficiency values of 86.64% at 28 GHz and 87.43% at 38 GHz underscore the antenna's effectiveness in converting input power into radiated electromagnetic energy. Overall, the results validate the proposed antenna design's efficacy for dual-band operation, offering promising prospects for various wireless communication applications in the 28 GHz and 38 GHz frequency bands.