Innovative mm-Wave Compact Dual-Port MIMO Antenna with Inherent Wideband Isolation at 28 GHz for 5G Wireless Networks

In the contemporary landscape of wireless communications, millimeter-wave frequencies have emerged as a compelling solution to meet the ever-growing demand for high data rates in 5G networks. In line with this, this study explores the development of an innovative dual-element MIMO antenna system, tailored for operation within the spectrum of mmW, with compact dimensions measuring 6 × 11 × 0.8 mm3. Each individual antenna unit consists of a microstrip patch with trapezoidal-shaped contour positioned on the laminate of RTRogers Duroid 5880, characterized by a 2.2 permittivity and a 0.0009 low tangent loss. The antenna overall architecture incorporates a distinct ground plane with a trapezoidal slot geometry. Operating at a fundamental resonance frequency of 28 GHz, this antenna offers an extensive bandwidth that spans from 26 to 30 GHz, covering a substantial 4 GHz spectrum. It achieves an impressive radiation efficiency of 99% and provides a respectable gain reaching as high as 5 dB. Moreover, the MIMO configuration has been meticulously engineered, with a specific focus on meeting the shared ground plane requirements essential for practical implementation. In this context, our antenna system delivers outstanding performance, demonstrating robust isolation levels exceeding 26 dB, along with exceptional diversity capabilities. The outcomes derived from our research reaffirm the resilience and adaptability of this MIMO antenna, positioning it as a valuable asset for seamless integration into upcoming wireless equipment. This underscores its potential significance in the continually evolving landscape of wireless communications.