The Effect of Fluids on Waveguides Below Cutoff Penetrations as Related to Electromagnetic Shielding Effectiveness
Abstract
This study investigates the effect of fluid/loading on a waveguide below cutoff penetration through electromagnetic shields. The study addresses waveguide mode excitations, electromagnetic wave attenuation within the fluid- filled waveguide, and the effect of the waveguide on electromagnetic shielding effectiveness as measured by test procedures like those outlined in MIL-STD-285. Design curves are presented for commonly used pipe sizes and for some fluids that may be required to pass through electromagnetic shields. Results show expected changes in cutoff frequency due to variation in dielectric constant and response variations due to changes in loss tangent with frequency.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1984
- Accession Number
- ADA144685
Entities
People
- Michael K. McInerney
- Raj Mittra
- Ray Mccormack
- Scott Ray
- Steve Castillo
Organizations
- Construction Engineering Research Laboratory