Investigation of the Effects of Different Bending Degrees on the Performance of Microstrip Patch Textile-Based Antennas

Abstract

Textile-based antennas serve crucial functions in on-body antenna applications. However, their soft form makes them susceptible to bending from body movements and posture changes. This paper aims to investigate the effect of different bending simulation degrees with cylinder diameters of 200 mm, 150 mm, 100 mm and 50 mm using Computer Simulation Technology (CST) Microwave Studio software on the performance of microstrip patch textile-based antennas. Flannel serves as the substrate material, with copper as the conducting part. Results obtained indicate a slight increase in the operating frequency for all bending conditions compared to the initial 2.45 GHz frequency. Additionally, return loss values significantly decrease under bending conditions. Thus, the findings demonstrate that bending significantly affects the characteristics of microstrip patch textile-based antennas, leading to varied performance outcomes.