volume | PIER Journals

Abstract

This research paper presents a novel two-element Notched Circular Patch (NCP) antenna tailored for n78 5G NR band communication, resonating at a frequency of 3.5 GHz. The primary focus of this study is to enhance isolation using a simple antenna design with advanced optimization techniques. The proposed NCP antenna incorporates two diamond-shaped slots within a circular patch, designed to operate at n78 band or C-band. Through meticulous design and fabrication processes, the antenna achieves an inter-element spacing that is optimized with GA algorithm, and 1/4 of the ground structure is considered at the center of the patch, significantly improving its performance at 3.5 GHz, maintaining a VSWR of 1.1. The proposed 60 × 30 mm² NCP antenna exhibits remarkable characteristics, including > -30 dB isolation, a reflection coefficient of -27 dB, and a gain of 4 dBi. These results underscore the effectiveness of the antenna design in reducing mutual coupling and enhancing isolation, which are essential for achieving reliable and efficient communication in 5G. The NCP MIMO antenna is thoroughly analyzed using characteristic mode analysis (CMA), and CMA parameters' influence on antenna performance is discussed. The design further highlights its practicality and potential for implementation in various wireless communication systems.

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Ms. Rama Lakshmi Gali

Dr. Madhavi Tatineni