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High power X-band klystron

L-3 Communications Electron Devices Division (EDD) is developing a 9.3 GHz, 5 MW peak, 20 kW average power klystron suitable for use in linear accelerator and radar applications. Generating RF power of this magnitude within the confines of a relatively small sized X-band RF circuit is a significant challenge. A discussion of the design methodology and simulation tools used to accomplish this task will be presented, as will hot test data from the first prototype.