volume | PIER Journals

Abstract

This paper proposes a dual-port Ultra-Wideband (UWB) Multiple-Input Multiple-Output (MIMO) antenna with triple notch characteristics based on Coplanar Waveguide (CPW) feeding. The antenna achieves triple notch performance by introducing two L-shaped and one inverted U-shaped electromagnetic band gap (EBG) structures on the back of the substrate and etching inverted U-shaped grooves on the feed line, thereby suppressing interference from WiMAX, WLAN, and the C-band. The simulation and experimental results show good agreement, verifying the feasibility of the proposed antenna. The results show that this antenna covers the entire UWB band from 3.08 to 10.87 GHz, with a reflection coefficient of less than -10 dB, mutual coupling coefficient of less than -20 dB, envelope correlation coefficient (ECC) of less than 0.0072, and diversity gain (DG) exceeding 9.9997 dB within the operating band. It meets the requirements of high-performance MIMO systems for channel independence and transmission efficiency, and has potential applications in modern UWB communication systems.

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Dr. Jiasheng Li

Professor Han Lin

Professor Wenyan Nie

Professor Zhonggen Wang