The invention discloses a
phased array circular array antenna
system which comprises a circular array antenna. The circular array antenna comprises a circular
metal reflector and an antenna unit fixedon the circular
metal reflector.
Multiple antenna unit groups are distributed along the circumference of the circular
metal reflector. A row of antenna elements in the horizontal direction of the circular array antenna is connected to different RF switches according to a certain order, output ends of all
RF switch in a row are connected the same secondary power splitter, and an output end of thesecondary power splitter is connected to a phase shifter to form a horizontal
antenna array. According to the invention, the non-mechanical
signal search and tracking is realized, the directional diagram scanning and tracking of 360 degrees in a horizontal direction and 90 degrees in a vertical direction are carried out on a
signal in movement, the search and tracking of the
signal are achieved through electric scanning, the reliability is good, the capture time of an electric scanning signal can be calculated in milliseconds, a beam can be changed, different directions can be pointed in scanning and tracking, and complex networking such as relaying can be achieved.