Title :
The relationship between output current from digital IC and radiation from transmission line
Author :
Kazama, Satoshi ; Shinohara, Shinichi ; Sato, Risaburo ; Shimizu, Masayuki
Author_Institution :
Electromagn. Compatibility Res. Labs. Co. Ltd., Sendai, Japan
Abstract :
One of the types of electromagnetic radiation from digital ICs is the radiation from transmission lines through which current from the IC output pins flows. The current that flows into the transmission line is a cause of electromagnetic radiation. This paper clarifies the relationship between the electromagnetic field that is radiated and the current values at the signal output pins when the transmission line is a microstrip line. The study shows how it is possible to use this relationship to estimate the electromagnetic radiation from the signal circuit path by using the level of current output from the digital IC signal pins. The study further shows that the effectiveness of the electromagnetic compatibility components inserted along the transmission lines can be estimated from the current levels
Keywords :
digital integrated circuits; electric field measurement; electromagnetic compatibility; electromagnetic fields; electromagnetic interference; magnetic field measurement; microstrip lines; EM field estimation; EM field measurement; EMI; IC output pins; current flow; digital IC; electromagnetic compatibility components; electromagnetic radiation; microstrip line; output current; signal circuit path; transmission line; Digital integrated circuits; Distributed parameter circuits; Electromagnetic compatibility; Electromagnetic radiation; Frequency; Impedance; Microstrip; Pins; Power transmission lines; Transmission lines;
Conference_Titel :
Electromagnetic Compatibility, 1999 International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-9980748-4-9
DOI :
10.1109/ELMAGC.1999.801345
