IOTs step into L-band: 20 kW CW at 1.3 GHz

Abstract

IOTs have been broadly used in the UHF range for broadcast, science and industrial applications. It was initially thought that IOTs would not be able to maintain their well-appreciated properties, such as efficiency and linearity, while operating at frequencies above 1 GHz due to the transit time limit. However, since a growing number of particle accelerators requests 1.3 GHz amplifiers as RF power sources, an investigation was conducted to determine the possibility of manufacturing L-band IOTs. Detailed operating parameters of prototype and beta version will be presented in the paper.