Influence of guard band on common-mode (CM) current related to a microstrip line (trace) has been studied experimentally and FDTD simulation. As the guard band, copper tape is connected along the entire edge of the ground plane. It is cleared that a guard band parallel to and near a trace is most effective in suppressing the CM current. An empirical formula to quantify the relationship between the position of a trace and CM current of the case with a guard band is proposed. Calculated results using the empirical formula and FDTD modeling are in good agreement, which indicates this empirical formula should be useful for developing EMI design guidelines.
Y. Kayano et al., "A Study on Influence of Guard Band on Common-Mode Current Related to a Microstrip Line," Proceedings of the IEEE International Symposium on Electromagnetic Compatibility, 2003, Institute of Electrical and Electronics Engineers (IEEE), Jan 2003.
The definitive version is available at http://dx.doi.org/10.1109/ICSMC2.2003.1429111
IEEE International Symposium on Electromagnetic Compatibility, 2003
Electrical and Computer Engineering
Keywords and Phrases
Cu; EMI Design; FDTD Simulation; Common-Mode Current Suppression; Copper; Copper Tape Connection; Electric Current Measurement; Electromagnetic Interference; Empirical Formula; Finite Difference Time-Domain Analysis; Ground Plane Connection; Guard Band; Microstrip Line; Microstrip Lines; Printed Circuit Layout; Trace Position
Article - Conference proceedings
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