Title :
Effect of shielded room on standard magnetic field
Author :
Nakane, Hideyuki ; Maruyama, Hisataka ; Omori, Sho ; Yokoshima, I.
Author_Institution :
Dept. of Electrical Engng., Sci. Univ. of Tokyo, Shinjuku-ku, Tokyo, Japan
Abstract :
The near-zone magnetic field generated by a small loop antenna has been used for sensitivity test of a radio receiver. When external interference fields exist around the antennas, the test must be carried out in a shielded room. The formulas to estimate the effect of the shielded room on the standard magnetic field are derived for the coaxial and the coplanar alignments of the loops. The differences between the values calculated from the formulas and measured ones were within ±0.15 dB up to 50 MHz.
Keywords :
antenna radiation patterns; electronic equipment testing; magnetic field measurement; magnetic shielding; radio receivers; near-zone magnetic field; radio receiver; sensitivity test; shielded room; small loop antenna; Antenna measurements; Magnetic field measurement; Magnetic fields; Magnetic noise; Oscilloscopes; Receiving antennas; Voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1982.6312487
