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2024-03-26
A 4-Port Broadband High-Isolated MIMO Antenna for Wireless Communication
By
Progress In Electromagnetics Research C, Vol. 142, 119-130, 2024
Abstract
This article proposes a versatile Multiple Input Multiple Output (MIMO) antenna designed for contemporary wireless systems spanning frequencies from 3 to 20 GHz. It serves applications such as 5G mobile, WiFi, WiFi-6E, X-band, partial Ku, and K-band. The original single-element antenna evolves into a 4 × 4 MIMO configuration with optimized ground plane modifications for enhanced performance. A decoupling structure achieves over 20 dB isolation between inter-elements. The feeding structure, featuring a gradually changing design connected to the antenna's radiating structure, achieves wide bandwidth characteristics. This is further improved by a partial ground structure and slots on the radiating element. The lower frequency band of 3 to 7 GHz is attained with a rectangle-shaped radiator, while semi-circular microstrip lines atop the radiator enable the higher frequency bands of 8 to 15.4 and 18.7 to 20 GHz. The slots and ground structure enhance impedance bandwidth, and semicircles improve the radiation pattern. The MIMO antenna demonstrates measured peak gains of 4.4 dBi at 3.5 GHz, maintaining a radiation efficiency exceeding 80%. Validation through metrics like ECC, DG, CCL, and TARC confirms strong agreement between simulated and experimental results, positioning the MIMO antenna as a robust choice for various wireless communication applications.
Citation
Ayyaz Ali, Maryam Rasool, Muhammad Zeeshan Zahid, Imran Rashid, Adil Masood Siddique, Moazzam Maqsood, and Farooq Ahmad Bhatti, "A 4-Port Broadband High-Isolated MIMO Antenna for Wireless Communication," Progress In Electromagnetics Research C, Vol. 142, 119-130, 2024.
doi:10.2528/PIERC24012905
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