High-gain planar Bow-tie antenna using zero index metamaterial

This paper presents the design and simulation of high-gain planar Bow-tie antenna working at millimeter-waves (57-64 GHz). By loading a zero-index metmaterial(ZIM) unit-cell in front of a bow-tie end-fire antenna, and double G-shaped unit-cell at the back of antenna, the antenna parameters, such as the gain, front-to back ratio, and side-lobe level are significantly improved. Simulation results indicate that the gain of proposed antenna varies from 11.7-12.3 dB over the frequency range of 57-64 GHz.