| 摘要 |
PURPOSE: To prevent damage of a ferrite body due to external forces such as impact load and press pressure by providing a gap between ferrite bodies, and connecting and holding each ferrite body in the inside of a frame body in a line. CONSTITUTION: A plurality of short rod-like ferrite bodies 2 which are cut along the radial direction on a few parts are connected and held in a line, with a specified gap provided between each ferrite body, in a hollow cylindrical frame body 6 composed of composite resin capable of elastic deformation. Since an antenna formed by winding a coil 3 around the circumference of the frame body 6 can be bent in the gap between each ferrite body 2, it is gently curved as the whole. Accordingly, even if external forces such as impact and press pressure is loaded, the antenna 1 will absorb those external forces, and cracking and damage will not be produced on the ferrite bodies 2. When the antenna 1 is incorporated in a watch or the like, incorporability is improved because it can be bent. |
