ON THE WIDE-BAND CW ILLUMINATION OF LARGE-SCALE SYSTEMS .1. THE ELLIPTICUS ILLUMINATOR

The Phillips Laboratory has recently designed and constructed a contin uous wave illuminator for studying the responses of large-scale system s subject to electromagnetic stresses. The illumination is developed b y an electrically large, ferrite-loaded elliptical-loop configuration that is oriented over the system being studied. One half of the loop i s completed by its image in the ground plane. With the loop being driv en from its apex, the electric and magnetic fields are substantially h orizontal, corresponding to illumination from an overhead source. Data are presented for the illumination field and the response of an aircr aft, recorded at the Phillips Laboratory large electromagnetic system level illuminator (LESLI) research facility.