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2025-08-14
Design of UWB Monopole Antenna with Ring Structure Based on Characteristic Mode Theory
By
Progress In Electromagnetics Research C, Vol. 158, 225-234, 2025
Abstract
In this paper, an ultra-wideband monopole antenna for wireless communication is designed and fabricated based on characteristic mode theory. The antenna is mainly composed of a metal main body and a circular metal patch and the antenna dimensions are 35×30×1.6 mm3. In order to enhance its matching performance, a circular groove is made in the center of the circular metal patch, and an outer ring is added to the outside. In order to expand the covered bandwidth and reduce the reflection loss, an isosceles right triangle is cut off from each side of the ground plane. The length of the ground plane and the side length of the ground plane cut angle are optimized. The key modes are determined through the analysis of the characteristic mode theory. The simulation and measurement results show that this antenna covers the frequency band of 3.03-11.75 GHz, with a maximum return loss of -42.26 dB and excellent radiation performance.
Citation
Zhen Xiang, Zhonggen Wang, Chenlu Li, and Rui You, "Design of UWB Monopole Antenna with Ring Structure Based on Characteristic Mode Theory," Progress In Electromagnetics Research C, Vol. 158, 225-234, 2025.
doi:10.2528/PIERC25060317
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