Impulse electromagnetic fields of large intensity in combination with ultra-short pulse (USP) duration are widely used for modification a property of materials, creation special types of radars and test facilities at studies of electromagnetic compatibility/strength (EMC/S). Long-term experience of NSC KIPT in the area of highpower impulse radiation sources used for tests of radioand electronic equipment and components to impact of USP microwaves with narrowband (NB) and ultra-wideband (UWB) frequency ranges.