Abstract
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.
Highlights
Solid-state RF high power amplifiers are increasingly used in a large variety of systems including particle accelerators, such as cyclotrons and LINACs and in an increasingly larger variety of applications: radionuclide production, particle therapy for cancer treatment, synchrotron light sources for scientific studies, etc
The measured peak power per module is about 1.25 kW, while operating at 50 V drain voltage with a drain efficiency of 71% [3]. Eight of such modules were combined using a planar 8-way Gysel combiner to achieve above 10 kW output power
A compact 10 kW pulsed peak power amplifier has been developed at 352 MHz using eight modules in a single ended architecture
Summary
Solid-state RF high power amplifiers are increasingly used in a large variety of systems including particle accelerators, such as cyclotrons and LINACs and in an increasingly larger variety of applications: radionuclide production, particle therapy for cancer treatment, synchrotron light sources for scientific studies, etc. A single-ended architecture has been demonstrated to ensure a high performance for power amplifier at the kilowatt-level [3]. The measured peak power per module is about 1.25 kW, while operating at 50 V drain voltage with a drain efficiency of 71% [3].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
