Title :
Investigation of electromagnetic noise transmission characteristics from AC mains port to telecommunication port
Author :
Tominaga, Tetsuya ; Akiyama, Yoshiharu ; Yamane, Hiroshi ; Kuwabara, Nobuo
Author_Institution :
NTT Energy & Environ. Syst. Labs., Tokyo, Japan
Abstract :
A method of evaluating the isolation factor from an AC mains port to a telecommunication port was investigated. Telecommunication equipment was represented by a 4-port network consisting of a pair of wire and ground. The relationship between input and output signals of the network was represented by an F-matrix and the isolation factor (ratio of input to output signals) was derived from the matrix. We developed a method of measuring the parameters and the measured values for a resistance-network agree well with calculated ones. The evaluation results of the isolation factor for three types of telecommunication equipment show that isolation for differential-mode noise from AC mains to telecommunication ports is larger than that for common-mode noise.
Keywords :
electric noise measurement; electromagnetic compatibility; multiport networks; telecommunication terminals; 4-port network; AC mains port; EMC; F-matrix; PLC; common-mode noise; differential-mode noise; electromagnetic noise transmission characteristics; isolation factor; resistance network; telecommunication equipment; telecommunication port; AC generators; Electrical resistance measurement; Electromagnetic compatibility; Electromagnetic interference; Noise generators; Programmable control; Telecommunications; Voltage; Wire; Working environment noise;
Conference_Titel :
Electromagnetic Compatibility, 2003 IEEE International Symposium on
Print_ISBN :
0-7803-7835-0
DOI :
10.1109/ISEMC.2003.1236653