PhD position in microwave engineering - with specialization in radio frequency (RF) amplifiers wi...
Doctoral studies in Engineering Science with specialization in microwave engineering, at the Ångström Laboratory, Department of Engineering Sciences, Division of Solid State Electronics (http://www.teknik.uu.se/solid-state-electronics). Starting date as soon as possible. Uppsala University is the oldest university in the Nordic countries—founded in 1477 having three Disciplinary Domains: Arts and Social Sciences, Medicine and Pharmacy, and Science and Technology with a turnover of SEK 6,5 billion. The University about 7000 employees and more than 40,000 undergraduate and graduate students enrolled in courses.
This project will be conducted as part of a collaborative effort between the FREIA and Solid State Electronics divisions, both situated at the Ångström Laboratory. The name FREIA is an acronym for Facility for Research Instrumentation and Accelerator Development. 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.
We offer a varied and exciting work, in collaboration with well-established nationally and internationally renowned research institutions. The work is performed in close collaboration with large EU industry, within the new Eurostars-project ENEFRF and involves also traveling to major facilities in EU and attending conferences in other parts of the world. In the project ENEFRF we will together with industry develop the next generation RF-sources for isotope producing cyclotrons. Research will be splitted into four major sections: (1) highly efficient RF power amplifiers involving the study of different topologies, such as class E and inverters which are used towards maximizing the efficiency at high power levels; (2) novel techniques for power splitting using FPGAs for digital waveform generation; (3) highly efficient RF power combiner 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.
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