Title :
Shielding effectiveness prediction in MIL-STD 285 loop source configuration
Author :
Celozzi, Salvatore
Author_Institution :
Electr. Eng. Dept., Univ. of Rome La Sapienza, Italy
Abstract :
An analytical formulation is presented for the evaluation of performance of a planar shield in the low-frequency, low-impedance antenna configuration described by MIL-STD 285 and IEEE Std. 299. The magnetic field computed in various shield configurations by means of the proposed closed-form expressions is presented. The proposed procedure allows the evaluation of the shielding effectiveness exactly. The effects of the finite size of both the transmitting and receiving antenna are taken into account accurately and highlighted. Finally, the exact solution is compared with that deriving from the use of the so-called transmission line (TL) approximation, in various conditions
Keywords :
IEEE standards; magnetic fields; magnetic shielding; receiving antennas; transmitting antennas; IEEE Std. 299; MIL-STD 285 loop source configuration; closed-form expressions; low-frequency; low-impedance antenna configuration; magnetic field computation; planar shield; receiving antenna; shield configurations; shielding effectiveness prediction; transmission line approximation; transmitting antenna; Antenna measurements; Frequency; Magnetic analysis; Magnetic field measurement; Magnetic flux; Magnetic shielding; Measurement standards; Receiving antennas; Transmission line theory; Transmitting antennas;
Conference_Titel :
Electromagnetic Compatibility, 1998. 1998 IEEE International Symposium on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-5015-4
DOI :
10.1109/ISEMC.1998.750367
