Operational Considerations of a Reverberation Chamber for EMC Immunity Measurements - Some Experimental Results

This paper describes measurement procedures and results obtained from evaluation of a 2.74 m × 3.05 m × 4.57 m shielded chamber modified into a mode tuned reverberation chamber. A brief description of the measurement setup is given. The measurements described include an evaluation of the chamber's: 1) excitation and receiving antennas' voltage standing wave ratio and efficiency, 2) mode tuner effectiveness, 3) loss, and 4) electromagnetic test field statistical characteristics. In addition, the measurement results Of two techniques to determine the field strength in the reverberation chamber are compared. Results shown cover the frequency range 200 MHz to 18 GHz.