The Effect of the Stirrer Over the Electric Field Uniformity in a Reverberation Chamber

The reverberation chambers, which are electromagnetic test structures are alternative to theanechoic chambers because of the installation cost is much lower than the anechoic chamber. In orderfor a room to be reverberation chamber, the level of the electric field must be determined and electricfield uniformity must be provided in the room. In order to have a uniform electric field in the room, thestandard deviation of the maximum electric fields must be 4dB between 80 MHz and 100MHz, linearlydecrease from 4dB to 3dB from 100MHz to 400MHz, and below 3dB above 400MHz. Obtaining theelectric field uniformity depends on the parameters such as the placement of the stirrer in the room andthe stirrer position and size, transmitter antenna position, room dimensions. In this study, the effect ofthe placement of the stirrer in the room was examined for the uniformity of the electric field, and as aresult of the simulation performed, it was seen that the stirrer contributed significantly to the uniformityof the electric field.