A study of three-dimensional immunity characteristics of an EUT using low-speed rotation fields

Three-dimensional radiated immunity characteristics of an equipment is discussed. Here, the incident fields to an equipment under test (EUT) are rotated at a very low speed on a plane. By applying the fields of low-speed rotation (rotating fields) to the EUT, the directional immunity characteristic in a plane can be obtained automatically. Moreover, by setting the EUT on a turntable, the three-dimensional (3D) immunity map can also be achieved. In this paper, to show the capabilities of the developed method, the immunity test of a rectangular cavity with a slit is attempted by a trial setup as an example. Experimental results show that the radiated immunity characteristics of EUT are obtained in detail