A compact 10 kW solid-state RF power amplifier at 352 MHz

8th International Particle Accelerator Conference

Dancila, Dragos^1 ; Hoang Duc, Long^1 ; Jobs, Magnus^1 ; Holmberg, Måns^1 ; Hjort, Adam^1 ; Rydberg, Anders^1 ; Ruber, Roger^1

FREIA, Uppsala University, Uppsala

SE-751 21, Sweden^1

关键词: European spallation sources;    LDMOS transistors;    Low insertion loss;    Output peak power;    Pulse length;    Pulsed operation;    RF power amplifiers;    Single-ended;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012093/pdf
DOI  :  10.1088/1742-6596/874/1/012093

来源: IOP

【 摘 要 】

A compact 10 kW RF power amplifier at 352 MHz was developed at FREIA for the European Spallation Source, ESS. The specifications of ESS for the conception of amplifiers are related to its pulsed operation: 3.5 ms pulse length and a duty cycle of 5%. The realized amplifier is composed of eight kilowatt level modules, combined using a planar Gysel 8-way combiner. The combiner has a low insertion loss of only 0.2 dB, measured at 10 kW peak power. Each module is built around a commercially available LDMOS transistor in a singleended architecture. During the final tests, a total output peak power of 10.5 kW was measured.