A High-gain and Directivity Enhanced Waveguide Antenna
ZHENG Yue-jun
GAO Jun
CAO Xiang-yu
YUAN Zi-dong
LI Wen-qiang
Abstract：A double screen FSS with positive reflection phase gradient(the general with negative slope),a-bove 0.83 reflection magnitude value and partially reflection features at 5.42~5.80GHz is designed and fab-ricated,the new waveguide antenan bandwidth is broadened,gain is improved and directivity is enhanced by applying the double screen FSS as a radome on the radiation orientation.The FSS radiation enhanced and scattering reduced mechanism are analyzed by adopting ray theory and Fabry-Perot resonator model,and the capabilities of new antenna are validated by simulation and experimentation.The results show that:the bandwidth of the antenna is increased by 34.6% and the gain of the antenna is enhanced by 6.94 dB,and the half-power beam width of E-plane and H-plane are reduced by 240 and by1280 respectively.
Keywords：frequency selective surfacereflection coefficienthigh-gainwaveguide antenna
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 57-61 )