A 1 × 4 Arrow Headed MIMO Antenna with Integrated Band Rejection and High Isolation for 6G Communication Systems

This study introduces the design and evaluation of a compact 1 × 4 arrow-headed MIMO antenna system tailored for future 6G communication applications. The proposed antenna operates across a wide frequency range suitable for sub-6 GHz and mmWave bands, offering enhanced performance through integrated band rejection to mitigate interference from unwanted frequency bands. Each antenna element features an arrow-shaped radiating structure optimized for high gain, compactness, and directional performance. A novel isolation technique is employed to ensure high port-toport isolation, exceeding 25 dB. No extra structures are needed. Making it suitable for compact platforms. The antenna demonstrates that the MIMO performance is very good, with a low envelope correlation coefficient (ECC less than 0.01) and high diversity gain. And stable radiation patterns. Simulated and measured results validate the design's suitability for highspeed, low-latency 6G systems, highlighting its potential in nextgeneration wireless networks, smart devices, and advanced communication platforms.