Patent attributes
A circuit component group of a high frequency circuit is mounted on an upper surface of a circuit board. The circuit board contains a multilayered dielectric board having a ground conductor therein. An antenna element 6 made of a metal plate is mounted so as to cover a portion of the circuit component group. The antenna element contains a radiating conductive plate arranged opposite to and parallel to the circuit board, a feeding terminal piece bent from a peripheral portion of the radiating conductive plate, a ground terminal piece, and three leg pieces. The feeding terminal piece is connected to a feeding line of a wiring pattern, the ground terminal piece is connected to the ground conductor, and the leg pieces are soldered to the connecting lands formed on an upper surface of the circuit board, respectively.