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Abstract
The Inductive Output Tube (IOT)is a vacuum electron tube which is capable of amplifying RF power with high efficiency. It is popularly used as high power source in communication transmitters and particle accelerators operating at ultra-high frequency (UHF) band [1]. The schematic of IOT is shown in Figure 1 [2]. The major assemblies are the electron gun, two resonant cavities (input and output), input and output couplers, collector and focusing magnet.