Patent ID: 6745057
Filing Date: 2004-06-01
Classification: H01Q

Abstract:
A portable telephone including an antenna and a metallic cabinet operating as main radiation sources of electromagnetic waves, a feeding point for suppling said antenna and said metallic cabinet with electric power, an outer packaging formed of a material such as plastics or resin, and a reflecting plate for reflecting the electromagnetic waves radiated from said radiation sources, whereinsaid reflecting plate is provided for increasing the amount of electromagnetic waves radiated into a free space when the portable telephone is in use, selectively arranged at a position where an electric field component or a magnetic field component of the electromagnetic waves radiated from said radiation sources is dominant, and is formed of a magnetic material, and a ratio of a real part to an imaginary part of a complex relative permeability at a frequency used in the portable telephone of said magnetic material is not more than 0.5.