Schematic Demonstration of EMC Test System:
a) The sample opening on the shielded room and the receiver
antenna inside the room
b) Placement of the copper coated textile sample in the
sample opening,
c) Copper coated textile sample placed in the sample opening
on the wall of the shielded room and the antenna
The measurements are carried out in standard laboratory
conditions, in 10 kHz -1 GHz frequency range, since most of the electromagnetic
radiation resources surrounding the humans in daily life, such as radio waves,
GSM, etc. radiate in that frequency range. Therefore in general a shielding
effectiveness of 40-60 dBV is aimed in our tests.
In a initial work the EMSE measurements was performed due to
the standard EN50147-1, in 5 different frequencies; 200MHz, 400 MHz, 600 MHz,
800 MHz and 1 GHz. In the measurements, the shielding effectiveness of the
sample is defined by finding the difference between the ideal signal value and
the detected value of the signal.
