Ultrafast Switching at the U.S. Army Pulse Power Center

摘要: There has been considerable research recently into the generation, propagation, and detection of short electromagnetic pulses for a variety applications from impulse radar to communications. This area come be known by title “ultra-wideband” research, encompasses many disciplines including analytical numerical modeling, antenna array design, signal processing, broadband circuit switching technology. The generation fast transients or impulses ultimately depends on high-speed voltage switching. A switch can used pulse-forming line generate an ultrafast electrical which is then fed ultra-wideband radiated; integrated, whereby serves as energy storage medium radiates directly when discharged switch. illustrated two generic generators in Figure 1. Ultrafast EM requires nanosecond sub-nanosecond speeds. For high-power switches operating at kilovolt levels greater are necessary. Achieving ultrafast, required special techniques new technologies. It this subject article. paper survey approaches toward high-voltage pulse that have pursued U.S. Army Pulse Power Center, well previous work with authors associated. Switching techniques, such semiconductor photoconductive conventional sparkgaps, generator topologies will discussed