We consider here how to build a balun for f%st-nsetime pulses at high vokage. We are concerned with signals with risetimes on the order of 100-200 ps, with high peak voItages and peak powers. We propose the simplest method is a coaxial unzipper. We consider dielectric strength and maximum coaxial radius allowable while still maintaining the risetime. Also considered are methods to reduce the co...

or office, the “return-path” or “upstream” data requirements are growing rapidly in markets such as telecommuting and video conferences. To satisfy the demand, the major telecommunications players are rushing to establish high bandwidth, two-way digital networks for video, telephony, and Internet to homes and businesses. One major technology expected to play a key role as a future broadband tel...

From ferromagnetic resonance xperiments and from calculations based on the modified Landau-Lifschitz equation, switching times for the coherent rotation of the magnetization in thin, permalloy-type films have been predicted to lie in the range of 1 mi1limicrosecond.l First measurements by D. 0. Smith et a1,2 utilizing a travellingwave oscilloscope with a response time of 2 mpec, indicated swi...

damping of a full-scale cable with a pair of passive–on magnetorheological (mr) dampers was tested. a cable of 215.58m long with the first mode frequency of 0.658hz was tensioned horizontally in cable prefabrication factory. two mr dampers were attached to the cable in an angle in the plane perpendicularly to the cable axis in 5m length from the cable anchorage. the applied voltage level was 0v...