Experimental analysis of wide-spectrum pulse with no matching transmission line

This paper presents a high power no matching transmission line based on chopping-peaking switch,and studies its operating principles. The effects of the switch break-over time, the switch break-over time-delay and the length of the no matching transmission line on the result of output wide-spectrum pulse are analyzed. A high power no matching transmission line is designed accordingly and high voltage experiments are conducted on the 500 kV Marx generation. The no matching transmission line can output wide-spectrum pulse with a peak power of 3.3 GW, a center frequency of 169 MHz, a band width of 22.9% when the chopping switch space is 4 mm with 1.15 MPa SF6 and the peaking switch space is 2.5 mm with 1.0 MPa SF6.