Title :
Electromagnetic radiation from printed traces on a circuit board with coated plastic cover
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
A rigorous formulation in the spectral domain is used to investigate the radiation from printed traces on a circuit board in the frequency range from 30 MHz to 1 GHz. The coupling effect among adjacent traces and the shielding effectiveness of metallic coating on the plastic cover are analyzed. It is found that the radiation around resonant frequencies is critical in satisfying the FCC (US Federal Communications Commission) requirement, and an appropriate coating can resolve the problem.<>
Keywords :
electromagnetic compatibility; printed circuits; shielding; 30 MHz to 1 GHz; EM radiation; EMC; FCC requirements; PCBs; US Federal Communications Commission requirements; adjacent traces; circuit board; coated plastic cover; coupling effect; frequency range; metallic coating; printed traces; resonant frequencies; rigorous formulation; shielding effectiveness; Coatings; Electromagnetic radiation; FCC; Frequency; Green´s function methods; Impedance; Material properties; Microstrip antennas; Plastics; Printed circuits;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99674
