Title :
The Use of Screened (Shielded) Rooms for the Identification of Radiation Mechanisms and the Measurement of Free-Space Emissions from Electrically Small Sources
Abstract :
The electric field measured in a screened (shielded) room using a 41-in rod antenna is dependent upon the geometry and size of the test setup, the type of source (electric or magnetic dipole), and the dipole moment. In this paper, experimental results and a computer model based on TEM wave propagation within the room are used to evaluate the differences between the dipole fields measured in a screened room, and the fields that dipoles of the same moment radiate in free space. A technique for identifying the type of source is suggested.
Keywords :
Antenna measurements; Antennas and propagation; Dipole antennas; Electric variables measurement; Geometry; Magnetic field measurement; Magnetic moments; Magnetic shielding; Size measurement; Testing; Radiated emissions; analysis, measurement; dipole sources; shielded enclosures;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.1984.304215