To improve radiation efficiency of the radiation electromagnetic field of an antenna in a radio communication equipment mounting a dipole antenna.

A portable slave set 1 has a 1/4 wavelength VDP(vertical dipole) antenna 2. A printed board 6 is incorporated in a casing 5. The circuit part of the portable slave set 1 is configured on this printed board 6, and also a feeding part 63 to the antenna 2 is formed. The lower elements 41 and 42 of the antenna 2 are formed of a copper foil in the same size and shape on the both sides of one side of this printed board 6. In the dielectric layer 61 of the printed board 6, through holes 62 are formed by penetrating this dielectric layer 61. Then, the lower elements 41 and 52 are short-circuited at a sufficiently short interval comparing with a feed wavelength by the feeding part 63.