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Postdoc in Next Generation of Gan Hemt for Highly Linear Amplifiers at Chalmers University of Technology

Applications are invited for a PhD position in semiconductors to join Chalmers University of Technology. The initial contract for this position is two years. The deadline for applying is July 31, 2020.

Do you want to be a part of the European GaN success story? This project works with the leading GaN industries in Europe and need the best people for developing next generation of GaN HEMTs. We will together push the limits in terms of power density, energy efficiency, and especially linearity.

There is an increasing demand in society for more capacity in the mobile networks, as well as smaller and multi-functional sensors for security applications. Furthermore, the energy consumption of all the systems should not increase, but rather decrease. Research carried out at the Microwave Electronics Laboratory (MEL) address this issue and wants to enable sustainable wireless systems. MEL employs more than 40 people performing world-class research on high speed electronic components, circuits, and systems for a wide range of communication and sensing applications in the frequency range from 1 GHz to 500 GHz and beyond. Our facilities include a uniquely well-equipped laboratory for advanced millimeter wave measurements and a state-of-the art cleanroom facility.

In recent years, electronic devices and circuits based on wide bandgap semiconductors (semiconductors scholarships) such as SiC and III-nitrides (GaN) have demonstrated disruptive performance in terms of frequency, power, and energy efficiency figure of merits. Next generation of highly integrated mmwave frontends for communication and sensors could potentially be designed using GaN semiconductor technology. GaN is not only a game changer for the microwave industry, but especially the power electronics industry benefits significantly from the increase power handling, higher switching speed and higher energy efficiency of GaN.

We have in-house GaN technologies at Chalmers targeting both the microwave as well as the power electronics industries. These technologies are developed in close collaboration with industrial partners, ranging from epitaxial growth companies, all the way up to system suppliers. We want to enable our technology for our partners, and hence specific model for certain applications are needed for use in circuit simulators. The technology is constantly evolving, and hence the modeling activity is a continuous activity that runs in parallel.

In your work, you will focus on characterization and modeling of III-nitride devices for high frequency as well as high power applications. The dynamic effects, due to electron trapping and self-heating, are of significant importance to accurately predict by the model, and hence dedicated measurements need to be developed and performed.

You will be a member in a team of other senior researchers and PhD students, both from industry and academia, working with semiconductor technology development, measurements, modeling, circuit design, and realization of complete wireless system demonstrators.

You have a PhD degree in the area of III-V or III-N material, component or circuit development or characterization, generally not older than two years. In the work, you will not only perform characterization, but also be part in the component and material development in collaboration with other researchers as well as industrial partners.

You are enthusiastic, like to drive and conclude projects independently, take own initiatives and discuss/develop own ideas, be creative and have a problem-solving mindset. The project is in collaboration with other researchers and industry. Hence you will be able to increase your professional network with relevant industries.

The application should be marked with Ref 20200317 and written in English. The application should be sent electronically and be attached as pdf-files, as below:

  • Chalmers declines to consider all offers of further announcement publishing or other types of support for the recruiting process in connection with this position. ***


Chalmers University of Technology conducts research and education in engineering sciences, architecture, technology-related mathematical sciences, natural and nautical sciences, working in close collaboration with industry and society. The strategy for scientific excellence focuses on our six Areas of Advance; Energy, Health Engineering, Information and Communication Technology, Materials Science, Production and Transport. The aim is to make an active contribution to a sustainable future using the basic sciences as a foundation and innovation and entrepreneurship as the central driving forces. Chalmers has around 11,000 students and 3,000 employees. New knowledge and improved technology have characterised Chalmers since its foundation in 1829, completely in accordance with the will of William Chalmers and his motto: Avancez!
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