A comparison of reverberation chamber and semi-anechoic chamber testing for automotive susceptibility

This paper describes a set of elementary measurements made to determine the level of correlation that may be expected between susceptibility testing in a reverberation chamber and in an anechoic chamber. The measurements are simple and well defined. A test object was placed in both chambers and illuminated with a test field of 75 V/m. The box was measured with two orientations of the slot, vertical and horizontal. The results show correlation in frequency response between the test methods but not in measured levels induced inside the test box. This lack of correlation is shown to be due to differences in induced currents on the face of the test box