Electromagnetic diffusion and wire coupling
Abstract
This report documents the research performed to develop physical insight into the coupling of radiated, pulsed, electromagnetic energy to a thin wire located inside a rectangular metallic enclosure. The electromagnetic fields diffuse into the rectangular cavity. The cavity size is not small compared to the wavelengths in the exciting field. A prime objective was to determine how the wire transients will change due to the parameters of cavity size, wire locations and orientation, and incident pulse parameters such as polarization, risetime, and decay time. The approach involved frequency domain analysis based on three distinct frequency regimes: low, intermediate, and high. In the low frequency region the skin depth is larger than the wall thickness of the enclosure. The intermediate region extends to the lowest internal mode of the enclosure. The high frequency region extends upward from the lowest mode. validation of the analytical results, planned under Phase 2 of the SBIR, were not performed.
- Publication:
-
Final Report
- Pub Date:
- April 1993
- Bibcode:
- 1993mrc..rept.....G
- Keywords:
-
- Electromagnetic Coupling;
- Electromagnetic Interference;
- Electromagnetic Pulses;
- Electromagnetic Shielding;
- Wire;
- Cavities;
- Electric Current;
- Electromagnetic Fields;
- Thickness;
- Communications and Radar