Research On High-angle Reflectarray And Cross-dipole Conical Beam Antenna Based On Water-reflecting Floo

In recent years,with the development of the earth low orbit communication satellite and indoor wireless positioning system,conical beam antenna has been widely used because of its advantages of beam width,small volume,and average gain.Therefore,it also attracts the attention of researchers.Aiming at the defect of limited beam angle in conventional conical beam antenna,a large inclination reflector antenna is designed;According to the integrated design requirements of antenna and solar panel in the space-borne data transmission system,an antenna based on transparent water reflector is designed.The specific innovative work is as follows:1.According to the principle of conical beam antenna and the actual requirements of satellite communication frequency,an X-band 12 GHz high inclination reflective array antenna and an S-band 2.15 GHz circularly polarized cross dipole antenna based on water reflective floor is designed;2.Given the limitation of the conventional conical beam angle,a large inclination reflector antenna is designed.The feed antenna is loaded with a metal column monopole antenna to broaden the beamwidth.At the same time,the antenna phase is adjusted by adjusting the period of the reflector and the mental bandwidth,to increase the beam angle of the antenna;3.Aiming at the integration of antenna and solar panel,a transparent circular polarization cross dipole antenna based on water reflector is designed.The proposed antenna transmits light energy to the solar panel through water,to realize the miniaturization of the system.The proposed antenna reduces the volume of the system and can be better integrated on the satellite;4.The simulation design of the above two antennas is completed and measured in the microwave anechoic chamber.The reflector antenna has a 3 d B beamwidth of-65?～-50?and 50?～70?,The maximum gain at the beam pointing angle is 8.1d B,the circular polarization cross dipole antenna is left-handed circular polarization,and the 3 d B beamwidth is-70?～-25? and 30?～65?,The maximum gain at the beam pointing angle is3.1d B,which verifies the feasibility of the antenna design.