Design and Analysis of Compact Four‐Port Fractal‐Loaded MIMO Antenna for 5‐g Application

This paper proposed a compact four‐port fractal‐loaded multiple input multiple output (MIMO) antenna for 5G applications. The proposed antenna is fabricated on an FR4 substrate and operates at dual‐frequency bands of 29.8133 and 34.2933 GHz, covering a wide bandwidth from 28 to 36 GHz. The design incorporates fractal loading and slots to enhance the bandwidth, which covers the frequency range from 28 to 36 GHz. The orthogonal placement of MIMO antenna elements minimizes mutual coupling, while the coplanar waveguide (CPW) feed efficiently transmits signals. The proposed fractal geometry allows significant size reduction while maintaining optimal performance at 5G frequencies, making the antenna suitable for compact wireless systems. The fractal geometry significantly improves isolation between the antenna elements, achieving an isolation level of −30 dB. The antenna exhibits peak gains of 6.4 dBi at 29.8133 GHz and 5.37 dBi at 34.2933 GHz, demonstrating its suitability for high‐speed, low‐latency communication. The design process begins with a single‐port antenna, transfers to a nonfractal MIMO configuration, and finally develops into the fractal‐loaded MIMO antenna. The results show that the proposed fractal‐loaded MIMO antenna offers better bandwidth, isolation, and compactness compared to traditional designs, making it ideal for next‐generation 5G wireless communication systems.