Title :
A study of EMI from patterned ground structures
Author :
Wallash, Albert ; Nguyen, Jack
Author_Institution :
HGST, Western Digital Co., San Jose, CA, USA
Abstract :
It is shown that a patterned ground structure (PGS) in a printed circuit board results in a significant increase in far-field radiation, compared to the same board without the PGS. Full-3D simulations, near-field scans, and far-field measurements are used to study and quantify the increased electromagnetic interference (EMI) due to the PGS. It is concluded that the increased EMI from a board using PGS devices for common-mode filter applications is an important consideration when the board is unshielded.
Keywords :
electromagnetic interference; printed circuits; EMI; electromagnetic interference; far-field radiation; patterned ground structures; printed circuit board; Antenna measurements; Current measurement; Dielectric measurement; Electromagnetic interference; Microwave filters; Resonant frequency; Transmission line measurements; EBG; EMI common-mode filter; PGS; Patterned ground structure;
Conference_Titel :
Electromagnetic Compatibility and Signal Integrity, 2015 IEEE Symposium on
Conference_Location :
Santa Clara, CA
Print_ISBN :
978-1-4799-1992-5
DOI :
10.1109/EMCSI.2015.7107666
