Design of High Gain Reflecting Metasurface Multi-beam Dual-band Antenna
XU Juan
YANG Kexin
Abstract：A high gain multi-beam dual-frequency antenna is proposed to achieve beam focusing and beam deflection in dual-frequency band by means of the electromagnetic control characteristics of metasurface.The designed multi-beam dual-frequency antenna consists of two parts:reflective metasurface and dual-frequency microstrip antenna.To achieve beam focusing with a focal length of 40 mm and±30° beam de-flection,the dual-frequency microstrip antenna is placed on a horizontal plane 40 mm below the metasur-face.According to the rational arrangement of two metasurface elements whose phase is approximately 0 and π above the antenna,beam focusing is achieved at 14.5 GHz and 22.7 GHz when the antenna is direct-ly below the focus,and±30° beam deflection is achieved at 14.5 GHz and 22.7 GHz when the antenna is ±35 mm away from the focus.The simulation results show that the antenna at different positions can achieve different beam control effects in the dual frequency band.Compared with the non-metasurface antenna,the gain of the antenna in the low frequency band is increased by 11.56～14.03 dBi,and the gain in the high frequency band is increased by 10.74～13.07 dBi.The designed metasurface antenna achieves high gain and beam control performance in dual frequency band.
Keywords：metasurfacedual-frequency antennaelectromagnetic controlmultibeam
Publication Date：2024-06-28
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：7( 8-13,79 )