Study and design of ultra-wideband quasi-Yagi antenna based on monopole printing

Abstract

Design of a broadband quasi-yagi antenna based on monopole printed loaded hypersurface. The antenna is fed by a microstrip line and consists of a notched rectangular monopole, a reflector loaded with branches, a pilot, and a hypersurface unit. The impedance bandwidth of the antenna is extended by increasing the length of the reflector, notching the rectangular monopole as well as the floor, and the antenna gain is enhanced by adding a high refractive index hypersurface periodic structure on the right side of the antenna. Simulation results show that the antenna has good radiation performance in the operating frequency band 2.53~4.34 GHz, VSWR<2, and the peak gain of the antenna reaches 16.9 dBi, which has the characteristics of wide bandwidth and high gain, and the designed antenna is suitable for the environment of mines and tunnels, and meets the design requirements.