Patent ID: 9705205
Date: 2017-07-11
CPC Classifications: H01Q

Claim:
1. A bi-polarized broadband annular radiation unit for being installed on a metal reflective plate thus constituting a communication antenna and defining an annular construction by two pairs of orthogonally polarized dipoles, comprising: two pairs of orthogonally polarized dipoles, each dipole comprising two symmetrical unit arms of a single line sheet shape, one end of a unit arm being facing to a corresponding end of the other unit arm, and a distal end of each unit arm of at least one pair of dipoles is provided with a loading line; and a plurality of balun arms feeding power to and supporting respective dipoles, each balun arm comprising two parallel balun lines, and the top ends of the two balun lines being connected with corresponding ends of the two unit arms of a corresponding dipole; wherein the two loading lines of one of the two pairs of dipoles are all vertically downwardly or upwardly orientated, while the other pair of the dipoles have their two loading lines all horizontally inwardly orientated; and adjacent loading lines of the adjacent dipoles are orthogonally arranged; and the entire radiation unit is integrally formed.