Effect of Bending on Metasurface Antenna and Microstrip Patch Antenna Array

In this paper, the characteristics of two different antenna types; metasurface antennas (MSA) and microstrip patch antenna (MPA) array are analyzed. To compare their sensitivity to bending, multiple numerical studies have been performed on both designs at different curvatures. The footprint of each design is
$120 \times 90\ \mathbf{mm}^{2}$
. The dimension of designs are optimized to operate in the Industrial, Scientific, and Medical (ISM) band with a center frequency of 5.8 GHz. Simulation results show that the reflection coefficient, the gain and the efficiency of MPA array are more sensitive than that of MSA for bending. The stability of reflection coefficients, radiation efficiency and realized gain makes the MSA a superior candidate for flexible and body-worn devices.