Author - Meppalli Shandas

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Meppalli Shandas	Write for Microwaves & RF

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July 2009 [Components]
TWTs Still Drive High-Power Systems
Vacuum tubes were once the active devices of choice in high-frequency systems. With increasing use of solid-state devices, however, vacuum electron devices (VEDs) play less dominant roles in microwave and millimeter- wave systems, although they still offer the most power per device for most applications. Vacuum tubes such as klystrons, crossed-field amplifiers (CFAs), gyrotrons, magnetrons, inductive output tubes (IOTs) and, in particular, traveling wave...