Statistical behaviour of transmit antenna orientation in a reverberation chamber

Reverberation chamber (RC) is one of the electromagnetic compatibility (EMC) facilities for radiated emission and radiated susceptibility test. The RC is unique because it allows many directions for illumination an object with a higher field strength compared to conventional techniques, for the same input power. The field uniformity and statistical behaviour of the field are crucial in a reverberation chamber. Transmit antenna is one of important components in the RC. The proper orientation of transmit antenna orientation contributes to the performance of RC. This paper presents an evaluation of the performance for three different antenna orientations inside a 2.50 m x 2.55 m x 4.00 m reverberation chamber. The evaluation was done in the frequency range from 100 MHz to 1000 MHz. The simulation results show that by implementing proper transmit antenna orientation; the field uniformity inside a reverberation chamber can be improved.