FREQUENCY TRANSLATION BY MODULATION OF TRANSIT-TIME DEVICES

摘要

For the purposes of this work a transit-time device is defined as a device in which each cycle of the carrier in¬itiates a disturbance that propagates from the input termi¬nal to the output terminal with a transit time T. The transit time of a particular disturbance is determined by conditions which exist at the input terminal at the time the disturbance is initiated. The klystron and the traveling-wave tube are microwave electronic examples of such a transit-time, device.nA general spectrum analysis for combined transit-time modulation (TTM) and amplitude modulation (AM) is given. A corresponding analysis for combined phase modulation (PM) and amplitude modulation (AM) Is presented, and the similar-ities and differences in the results of the two analyses are pointed out.