A New Design of MIMO Smartphone Antenna Array for 3.6 GHz Cellular Applications

The growing demand for multi-port MIMO antennas, largely fueled by advancements in technologies such as 5G networks, has underscored an important area of research. This paper presents a novel MIMO antenna design, specifically optimized for use in the sub-6 GHz frequency bands, which are essential for 5G cellular communications. The design incorporates discrete-fed modified monopole resonators etched onto the same layer as the ground. The antenna elements consist of a hook-shaped monopole coupled with an L-shaped strip, enabling operation within the 3.3 to 4 GHz range, aligning with the requirements for sub-6 GHz cellular applications.