| 摘要 |
PROBLEM TO BE SOLVED: To use a portable telephone, a PHS, etc., in a building without sending out a radio wave which may cause malfunction of neighboring precision electronic control equipment. SOLUTION: To use the portable radio communication equipment 7 equipped with an antenna 8 in one body in a building 1, a waveguide coupler 6 is coupled with the antenna 8 of the portable radio communication equipment 7 and the waveguide coupler 6 and an outdoor antenna 2 outside the building 1 are coupled by transmission lines 3, 4, and 5, so that the portable radio communication equipment is used as a wired system inside the building. |
