Wide beam circularly-polarized transceiving shared small satellite antenna

Abstract

The invention discloses a wide beam circularly-polarized transceiving shared small satellite antenna, which comprises a circular metal bottom plate, a metal round table, a circular radiator and an electric bridge, wherein the metal round table is a hollow round table, the bottom surface with a large area of the metal round table is fixed at the center of the circular metal bottom plate, the top surface of the metal round table is fixed at the center of the bottom surface of the circular radiator, the diameter of the circular radiator is greater than the diameter of the top surface of the metalround table and is less than the diameter of the circular metal bottom plate, and the electric bridge is arranged inside the metal round table and is fixed to the inner wall of the top surface of themetal round table. According to the wide beam circularly-polarized transceiving shared small satellite antenna, -1dBi gain thereof within a frequency band range can cover a space domain range with apitch angle ranging from -85 to 85 degrees (where 0 degree is on behalf of the antenna axial direction) and an azimuth angle ranging from 0 to 360 degrees; and the wide beam circularly-polarized transceiving shared small satellite antenna has a right-handed circularly-polarized port and a left-handed circularly-polarized port, realizes circularly-polarized transceiving sharing of the antenna, andhas the advantages of small size, light weight, and simple structure and processing technology.

Description

technical field [0001] The invention belongs to the field of satellite antennas, in particular to a small satellite antenna shared by wide-beam circular polarization transceiving. Background technique [0002] Compared with satellites in geosynchronous orbit, low-orbit satellites mainly refer to satellites that run on elliptical orbits and have obvious perigee, and are generally small satellites with small weight and short life. It is mainly used in near-earth communication and measurement occasions that require high resolution accuracy and low signal attenuation, such as surveying and mapping, detection, photography and satellite communication. Due to the obvious perigee of the low-orbit satellite, the electromagnetic wave emitted by the satellite reaches the ground with a very short straight-line distance at this time, which is conducive to sending and receiving with portable devices with low antenna gain and low transmission power. Therefore, it is often used as a satelli...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a small satellite antenna shared by wide-beam circular polarization for transmitting and receiving, which solves the problems that the helical antenna cannot be used for transmitting and receiving, and the beam width of the microstrip antenna is narrow.

Images