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Aperture excitation of electrically large, lossy cavities
By: Ondrejka, A.R.; Ma, M.T.; Hill, D.A.; Johnk, R.T.; Crawford, M.L.; Riddle, B.F.;
1994 / IEEE
Description
This item was taken from the IEEE Periodical ' Aperture excitation of electrically large, lossy cavities ' We present a theory based on power balance for aperture excitation of electrically large, lossy cavities. The theory yields expressions for shielding effectiveness, cavity Q, and cavity time constant. In shielding effectiveness calculations, the incident field can be either a single plane wave or a uniformly random field to model reverberation chamber or random field illumination. The Q theory includes wall loss, absorption by lossy objects within the cavity, aperture leakage, and power received by antennas within the cavity. Extensive measurements of shielding effectiveness, cavity Q, and cavity time constant were made on a rectangular cavity, and good agreement with theory was obtained for frequencies from 1 to 18 GHz.<
Related Topics
Electrically Large Lossy Cavities
Power Balance
Shielding Effectiveness
Cavity Q
Cavity Time Constant
Incident Field
Plane Wave
Uniformly Random Field
Random Field Illumination
Q Theory
Wall Loss
Absorption
Lossy Objects
Aperture Leakage
Received Power
Measurements
Rectangular Cavity
Uhf
Shf
Reverberation Chamber
Lighting
Absorption
Aperture Antennas
Receiving Antennas
Antenna Theory
Antenna Measurements
Q Measurement
Frequency Measurement
Time Measurement
Aperture Excitation
1 To 18 Ghz
Magnetic Shielding
Q-factor
Engineered Materials, Dielectrics And Plasmas
Fields, Waves And Electromagnetics
Engineering
Reverberation Chamber Illumination