Researcher position in microwave engineering with specialization in radio frequency (RF) amplifiers with high efficiency and high power
Sort on published: 2017-12-21
Uppsala University is a comprehensive research-intensive university with a strong international standing. Our mission is to pursue top-quality research and education and to interact constructively with society. Our most important assets are all the individuals whose curiosity and dedication make Uppsala University one of Sweden’s most exciting workplaces. Uppsala University has 42,000 students, 7,000 employees and a turnover of SEK 6.7 billion.
At the Ångström Laboratory, Department of Engineering Sciences, Division of Solid State Electronics (http://www.teknik.uu.se/solid-state-electronics).
Starting date spring 2018 or according to agreement.
The position is full-time (100%) for a duration of two years.
The research project will be conducted as part of a collaborative effort between FREIA and Solid State Electronics divisions, both situated at the Ångström Laboratory. At the FREIA laboratory, the general focus is on developing particle accelerator technology that can be used in large research facilities, such as CERN, ESRF, DESY, European Spallation Source (ESS), etc. More information can be found at http://www.physics.uu.se/research/freia-lab/research-areas/
The work is performed in close collaboration with large EU industry, within the new Eurostars-project ENEFRF and aims to develop the next generation RF-sources for isotope producing cyclotrons. In the project, the research and development targets four major sections: (1) highly efficient RF power amplifiers involving the study of different topologies, such as the class E at high power levels; (2) novel techniques for power splitting using FPGAs for digital waveform generation; (3) highly efficient RF power combination for solid state power amplifiers and (4) characterization of new semiconductor transistors involving, among others load pull measurements. Other aspects related to the thermal behaviour, reliability and lifetime of transistors will also be investigated.
The purpose of this project is to study new transistors using load-pull measurements and develop an active load-pull measurement set-up for few hundreds MHz. In addition, develop highly efficient power amplifiers (e.g. class E) and high power combiners, thereof to reach the nominal power levels of 10 and 20 kW in CW for the operation of a cyclotron. In the group, recent work has validated the development of a 10 kW demonstrator at 352 MHz, with high efficiency. We are therefore looking for a candidate with previous experience in transistor level load-pull measurements and large-signal modelling, but also on high power amplifiers and power combiners.
To qualify for an employment on a post-doctoral researcher position the applicant must hold a PhD degree or a foreign degree equivalent to a PhD degree. The applicant must have a PhD in microwave engineering with a focus on active microwave components or an equivalent education in a nearby scientific field. A background in load-pull measurements and highly efficient RF power amplifiers is highly meriting. The applicant should have good communication skills and both very good written and spoken English. The candidate should be goal oriented, structured, be able to work independently as well as in a group, and have a high level of motivation.
Applications should include a brief description of research interests and past experience, CV, copies of exams, degrees and grades, PhD thesis and other relevant documents.
For more information, please contact Assistant Professor Dragos Dancila, +46-(0)18-471 1078, email@example.com.
Uppsala University strives to be an inclusive workplace that promotes equal opportunities and attracts qualified candidates who can contribute to the University’s excellence and diversity. We welcome applications from all sections of the community and from people of all backgrounds.
You are welcome to submit your application no later than 31st of January 2018, UFV-PA 2017/4721.
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Placement: Department of Engineering Sciences
Type of employment: Full time , Temporary position longer than 6 months
Pay: Fixed salary
Number of positions: 1
Working hours: 100%
County: Uppsala län
Ellena Papaioannou, Seko
Per Sundman, Saco-rådet 018-471 1485
Suzanne Borén Andersson, TCO/ST 018-471 6251
Number of reference: UFV-PA 2017/4721
Last application date: 2018-01-31