ANTENNA AND SECTOR ANTENNA

摘要

An antenna, which has a horizontal polarization antenna (120) and a vertical polarization antenna (130a), can suppress the influence on the directivity and the like of one polarized wave which is caused by another polarized wave in transmission/reception of a plurality of polarized waves, and further this antenna can be made in a small size. The horizontal polarization antenna (120) comprises: element parts (121, 122) that are aligned in the horizontal direction and that constitute a dipole antenna; and grand plates (123, 124) respective one ends of which are connected to each other at a position where the element parts (121, 122) are opposed to each other and the respective other ends of which extend toward and orthogonally to a reflection plate (160). The vertical polarization antenna (130a) comprises: element parts (131a, 132a) that are aligned in the vertical direction and that constitute a dipole antenna; and a grand plate (134) an end of which is connected to the element part (131a) at a position where the element parts (131a, 132a) are opposed to each other and the other end of which extends toward and obliquely to the reflection plate (160) and is connected to the grand plate (124).