Title :
GTEM radiated emissions correlation testing and FDTD modeling
Author :
Harrington, Timothy E. ; Chen, Zhong ; Foegelle, Michael D.
Author_Institution :
EMC Test Syst., Austin, TX, USA
Abstract :
A three-dimensional finite-difference time-domain (FDTD) model is used to simulate basic GTEM to OATS and GTEM to free space radiated emissions correlation algorithms. The GTEM models are terminated both with the typical resistor/foam absorber load, or alternately with a numerical absorbing boundary condition to simulate a perfectly-matched load. Radiation from dipole and loop antennas and a 19" dummy EUT is simulated in FDTD GTEM, OATS, and free space models. Comparison is shown of simulated and measured data for these same antennas and EUT fed by a comb generator. Very good agreement is shown between the measured and computed results. Several considerations regarding correlation algorithm application in one-port TEM waveguides are discussed
Keywords :
antenna radiation patterns; correlation methods; dipole antennas; electromagnetic interference; electromagnetic wave absorption; electronic equipment testing; finite difference time-domain analysis; loop antennas; test facilities; waveguides; 3D FDTD model; EUT; FDTD GTEM; FDTD modeling; GTEM radiated emissions correlation testing; OATS; comb generator; dipole antenna radiation; dummy EUT; equipment under test; finite-difference time-domain; free space radiated emissions correlation algorithms; loop antenna radiation; measured data; numerical absorbing boundary condition; one-port TEM waveguides; perfectly-matched load; resistor/foam absorber load; simulated data; Antenna measurements; Computational modeling; Dipole antennas; Finite difference methods; Frequency; Open area test sites; Resistors; System testing; TEM cells; Time domain analysis;
Conference_Titel :
Electromagnetic Compatibility, 1999 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5057-X
DOI :
10.1109/ISEMC.1999.810116
