Wide-band pulse transformers for matching low impedance loads

Pulse transformers capable of matching the low impedance load characteristics of integrated circuits are discussed. Experimental models constructed by winding transmission lines on cores were found to pass pulses with rise times between 1 and 2 nsec and with little droop for pulses of 300-nsec width. A transformer in liquid helium transmitted a 1-μsec pulse with less than 10% droop. © 1963 The American Institute of Physics.