An Experimental Study on the Indoors Attenuation of Electromagnetic Wave for Transmitting the Standard Time Signal
作者单位：Salesian Polytechnic 4-6-8 OyamagaokaMachida Tokyo 194-0215 Japan Casio Computer Co.3-2-1 Sakae-machiHamura Tokyo 205-8555 Japan Tokyo Fuji University 3-8-1 Takadano-babaShinjuku Tokyo 169-0075 Japan
会议名称：《2007 4th International Symposium on Electromagnetic Compatibility(EMC’2007)》
会议日期：2007年
学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学]
关 键 词：Electromagnetic scattering Conducting materials Conductivity measurement Magnetic field measurement Receiving antennas Clocks Radio control Antenna measurements Attenuation measurement Measurement standards
摘 要：This study experimentally clarifies that the causes by which the radio control clock sometimes fails to receive the standard time signal in the indoors are in the following two factors:（1） The shielding by the conductive materials （used for column,pillar,floor and so on） existing close to the radio control clock.（2） The missing of tuning and the change of Q of the antenna due to the closely existing conductive materials.