Title :
Modeling leakage through finite apertures with TLM
Author :
Kraft, Clifford H.
Author_Institution :
AT&T Bell Labs., Naperville, IL, USA
Abstract :
It is well known that the shielding effectiveness of a metal barrier is totally determined by any apertures cut in it. What is not completely clear from previous experimental and theoretical work is the relationship between the size of holes, their number, their shape, and the total shielding effectiveness as a function of frequency. The author derives empirical formulas for shielding effectiveness based on simulations of plane waves impinging on metal barriers with slots. He uses the 3-dimensional transmission line matrix method (TLM) along with absolute power flux transfer through the slot to compare various slot combinations. He also compares patterns and far field behavior using the method of equivalent magnetic currents
Keywords :
electromagnetic compatibility; electromagnetic shielding; transmission line matrix methods; TLM; absolute power flux transfer; equivalent magnetic currents; far field behavior; finite apertures; frequency; holes; leakage; metal barrier; patterns; plane waves; shielding effectiveness; slots; transmission line matrix method; Apertures; Power transmission lines; Radio frequency; Resonance; Shape; Slot antennas; Symmetric matrices; Transmission line antennas; Transmission line matrix methods;
Conference_Titel :
Electromagnetic Compatibility, 1994. Symposium Record. Compatibility in the Loop., IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1398-4
DOI :
10.1109/ISEMC.1994.385681
