Title :
Effects of gapped groundplanes and guard traces on radiated EMI
Author :
Britt, D. Scott ; Hockanson, David M. ; Sha, Fei ; Drewniak, James L. ; Hubing, Todd H. ; Van Doren, Thomas P.
Author_Institution :
Dept. of Electr. Eng., Missouri Univ., Rolla, MO, USA
Abstract :
Designers sometimes employ gapped reference planes to isolate analog and digital signals, and separate “quiet” and “noisy” ground structures by providing a series impedance. Guard traces are also used to reduce unwanted coupling to adjacent traces, which can lead to signal integrity or EMI problems. This study investigates the impact of gaps and guard traces on radiated EMI. A simple microstrip circuit was constructed to experimentally analyze the effects of groundplane gaps and guard traces
Keywords :
electromagnetic compatibility; electromagnetic interference; microstrip circuits; gapped groundplanes; gapped reference planes; ground structures; guard traces; microstrip circuit; radiated EMI; series impedance; signal integrity; Circuit noise; Coupling circuits; Electromagnetic compatibility; Electromagnetic interference; Impedance; Inductance; Laboratories; Microstrip components; Signal design; Wrapping;
Conference_Titel :
Electromagnetic Compatibility, 1997. IEEE 1997 International Symposium on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-4140-6
DOI :
10.1109/ISEMC.1997.667561
