Shielding Theory of Enclosures with Apertures
CALIFORNIA INST OF TECH PASADENA ANTENNA LAB
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Present methods for computing the shielding efficiency of metallic plates with apertures are based on the analysis of a plane wave incident on an infinite conducting sheet. When applied to actual enclosures with internal radiation sources, these methods lose all validity, and obviously fail to predict the measured results. This dissertation develops the theory of electromagnetic radiation from metallic enclosures with apertures, excited by an internal source at frequencies below the fundamental resonance of the enclosure. The enclosure with an aperture is analyzed from two different points of view as a cavity with a small aperture in a wall and as a waveguide section short- circuited at one end and open at the other end.
- Electrical and Electronic Equipment