MIMO Antenna Design with Dual-Polarization Characteristic for 5G Handheld Devices

This study introduces a simple MIMO antenna configuration tailored specifically for future handheld devices. The design incorporates eight microstrip-fed open-ended antennas arranged in L-shaped slits with a rectangular microstrip feeding line, enabling operation within 3.4-3.8 GHz, falling within the sub-6 GHz 5G band. Despite its compact size, the array exhibits outstanding performance and has been extensively analyzed concerning its essential characteristics. The compact MIMO array occupies minimal space on the smartphone's board while delivering optimal performance radiation diversity, efficiency, and gain. The design meets the stringent requirements for future 5G handheld smartphones. Furthermore, the antenna's radiation performance in close proximity to the user ensures a dependable and resilient communication experience.