Title :
The effect of bus driver devices on transmission line emission
Author :
Braxton, Thomas E.
Author_Institution :
AT&T Bell Lab., Naperville, IL, USA
Abstract :
In a number of large computing systems of similar design, interunit cables within the systems were found to be responsible for much of the radiated emission. A bench-level experiment revealed that the noise itself was a function of common-mode current spikes, brought about by the skew between the outputs of clocked differential drivers. Significant improvements in systemwide emissions were seen after replacing those driver devices with others that had less skew
Keywords :
electromagnetic interference; inter-computer links; telecommunication transmission lines; EMI; bus driver devices; clocked differential drivers; common-mode current spikes; interunit cables; large computing systems; radiated emission; transmission line emission; Cables; Circuits; Clocks; Current transformers; Digital systems; Frequency; Noise reduction; Signal generators; Spectral analysis; Transmission lines;
Conference_Titel :
Electromagnetic Compatibility, 1988. Symposium Record., IEEE 1988 International Symposium on
Conference_Location :
Seattle, WA
DOI :
10.1109/ISEMC.1988.14135
