ANTENNA ELEMENT AND PORTABLE RADIO

摘要

An antenna element 5 includes a substantially rectangular first conductor plate 51 that is arranged at a predetermined space S from a lower circuit board (a ground plate) 21 and in the vicinity of a hinge 4; a substantially rectangular second conductor plate 52 that shares one widthwise side of the first conductor plate 51 and that is placed while bent at an angle of about 90° with respect to the first conductor plate; and a substantially rectangular third conductor plate 53 that shares another widthwise side of the second conductor plate 52 opposing the one side of the second conductor plate 52 shared by the first conductor plate 51 and that is arranged at an angle of about 90° so as to oppose the first conductor plate 51. The rectangular parallelepiped antenna element 5 is formed by folding a rectangular, board-shaped monopole element into two faces or more.