Previous studies have demonstrated that power plane pairs in a printed circuit board are capable of generating significant radiated emissions at resonance frequencies if these resonances are not damped by material or component losses. The paper shows that board resonances may be readily damped by component losses. However, radiated emissions from a damped power bus may still exceed FCC or CISPR limits over a broad band of frequencies.
H. Shim et al., "Radiated Emissions from Populated Printed Circuit Boards Due to Power Bus Noise," Proceedings of the IEEE International Symposium on Electromagnetic Compatibility, 2004, Institute of Electrical and Electronics Engineers (IEEE), Jan 2004.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2004.1349824
IEEE International Symposium on Electromagnetic Compatibility, 2004
Electrical and Computer Engineering
Keywords and Phrases
CISPR; EMC; EMI; FCC; Board Resonances; Circuit Noise; Circuit Resonance; Component Losses; Electromagnetic Compatibility; Electromagnetic Interference; Material Losses; Network Analysis; Populated Printed Circuit Boards; Power Bus Noise; Power Plane Pairs; Printed Circuits; Radiated Emissions; Resonance Frequencies
Article - Conference proceedings
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