ANTENNA RADIATION BOARD AND A PLANE TYPE WIDEBAND DUAL POLARIZATION ANTENNA APPARATUS

A wideband dual polarization flat type dipole antenna is provided to simplify a feeding structure of a dipole antenna by feeding a power to an antenna through a via-hole of a radiation substrate. A wideband dual polarization flat type dipole antenna includes a first dipole antenna, a second dipole antenna, a first via-hole(320), a first balun hole(322), a second via-hole(330), a second balun hole(332), and a third via-hole(340). The first dipole antenna radiates a first polarization through a first antenna component of a front plane unit installed on a front plane of a radiation substrate, a third antenna component of a rear plane unit installed on a rear plane of the radiation substrate. The second dipole antenna radiates a second polarization through a second antenna component of the front plane unit, and a fourth antenna component of the rear plane unit. The first via-hole inserts and connects a first core line of a first feeding cable for supplying a first feeding signal into the first dipole antenna. The first balun hole is coupled with the first feeding cable and inserts a first balun cable which performs a balun function. The second via-hole inserts a second core line of the second feeding cable for supplying a second feeding signal into the second dipole antenna. The second balun hole is coupled with the second feeding cable, and inserts a second balun cable which performs a balun function. The third via-hole is coupled to the second via-hole through a front plane unit, is coupled to the second balun hole through the rear plane unit. The third via-hole transfers the second feeding signal from the second via-hole to the second balun hole.