Patent ID: 6587015
Filing Date: 2003-07-01
Classification: H01Q

Abstract:
A transmission/reception unit comprising:a circuit board having a wiring pattern including various electric components; a cover made of sheet metal which is mounted to cover the electric components and has one of a cubic and hexahedral box shape; and an antenna mounted on the circuit board, the cover having: a top wall; a first, a second, a third and a fourth side walls which are formed by bending four sides of the top wall; a first corner defined by the neighboring first and second side walls; a second corner defined by the first side wall and the neighboring third side wall; a third corner defined by the second side wall and the neighboring fourth side wall; and a fourth corner defined by the neighboring third and fourth side walls, the antenna having: an antenna element as a conductor laid along the first side wall of the cover; and transmission and reception terminals and a ground terminal which are provided in a vicinity of the first corner and located at one end of the antenna element, wherein the ground terminal is connected to a ground pattern provided on the circuit board, wherein one of the first corner of the cover and the vicinity of the first corner is soldered to the non-ground wiring pattern, and wherein the ground pattern is connected with one of: one of the second corner and a vicinity of the second corner, one of the third corner and a vicinity of the third corner, one of the fourth corner, located diagonally to the first corner, and a vicinity of the fourth corner, and one of part of the third and fourth side wall.