Bowtie Antenna Performance Optimization using Metamaterial and Characteristic Mode Analysis

In this paper, A Metamaterial bowtie antenna, oper-ating at 28 GHz, is designed based on the theory of Characteristic Mode Analysis (CMA). We use the theory of characteristic modes to investigate the bowtie antenna's behavior, and to properly place the MTM unit cells to improve the bandwidth and the gain. According to the simulation results, the gain varies from 6.12 dB to 8.74 dB and the bandwidth increases from 11.28% to 20.75%. This design is suitable for millimeter-wave 5G applications.