Patent ID: 7417596
Filing Date: 2008-08-26
Classification: H01Q,H05K

Abstract:
1. A wristwatch including a case at least one part of which is electrically conductive and in which are housed an electronic module including a printed circuit board and an electric power source for powering said electronic module, said wristwatch further including an antenna provided with a ground plane, said printed circuit board having, at its periphery, a mechanical contact zone bearing on said electrically conductive part of the case, wherein the antenna and the ground plane are arranged on a top face of said printed circuit board, said top face being arranged on the side of a display device of the wristwatch, wherein said printed circuit board includes a top surface and a bottom surface, a conductive track electrically connected to said ground plane, said conductive track extending at the periphery of said printed circuit board and at least over said bottom surface of said printed circuit board, over said mechanical contact zone, in such a way as to establish an electric contact between said conductive track and said electrically conductive part of the case, so as to enlarge the ground plane of said antenna in directions extending substantially in the extension of said ground plane, the enlargement being located substantially in the plane containing the ground plane of the antenna, and wherein said electrically conductive part has a portion thereof extending at least substantially to the level of the bottom surface of the printed circuit board.