PhD in Adaptive GaN transmitter frontend for increased back-off efficiency

Team up with 10 fellow PhD students at Chalmers and Lund University to perform cutting-edge multi-disciplinary research in semiconductor system design! Your research on energy efficient and reconfigurable millimeter-wave compound semiconductor transmitter frontends will reduce CO2 impact and enable new applications ranging from wearable virtual-/extended reality (VR/XR) devices for telepresence to radars for security and environmental sensing.

Project description
Investigate a GaN transmitter frontend design that is designed to be adapted (bias, load impedance, etc.) dynamically with the RF signal envelope. The adaption signal is provided by an accompanying driver PA chip that is co-designed in CMOS and covered by separate PhD projects. This adaptation will allow for a transmitter frontend that simultaneously provides higher linearity and energy-efficiency compared to the state of the art, while maintaining a small form-factor which is essential for dense integration environments. You will work in close collaboration with others Ph.D. students to find the best signal split in terms of RF, bias, envelope, etc. for a globally optimum solution taking the characteristics of the different technologies (CMOS, GaN) into account.

Major responsibilities
Your major responsibilities as PhD student is to pursue your own doctoral studies, including both coursework and research. You are expected to develop your own scientific concepts and communicate the results of your research verbally and in writing. In addition, the position will normally include 20% departmental work, mostly teaching duties. The employment is limited to a maximum of five years.

Read more about doctoral studies at Chalmers here.

Qualifications
To qualify as a PhD student, you must have a master's level degree corresponding to at least 240 higher education credits in Electrical Engineering, Communication Engineering, Engineering Physics, Computer Engineering or similar, with a strong background in electronic circuit design. Experience in the design of integrated and high-frequency circuits is meritorious.

Since communication of research results is a central part of the work, communicative skills in English (oral as well as in writing) are vital. Furthermore, it will also be expected that you can take on responsibility, take own initiatives and work independently when needed. At the same time it is important that you are good at working in teams. This is especially vital since the current project will interact closely with adjacent disciplines. Finally, you need to be able to disseminate results and knowledge within existing and new networks. This includes academia, industry and society at large.

The position requires sound verbal and written communication skills in English. If Swedish is not your native language, Chalmers offers Swedish courses.

Contract terms
Full-time temporary employment. The position is limited to a maximum of five years.

We offer
Chalmers offers a cultivating and inspiring working environment in the coastal city of Gothenburg. 
Read more about working at Chalmers and our benefits for employees.

Chalmers aims to actively improve our gender balance. We work broadly with equality projects, for example the GENIE Initiative on gender equality for excellence. Equality and diversity are substantial foundations in all activities at Chalmers.

Application procedure
The application should be marked with reference number 20240597 and written in English. The application should be sent electronically and be attached as PDF-files, as below. Maximum size for each file is 40 MB. Please note that the system does not support Zip files.

CV: (Please name the document: CV, Family name, reference number)
• CV
• Other, for example previous employments or leadership qualifications and positions of trust.
• Two references that we can contact.

Personal letter: (Please name the document as: Personal letter, Family name, ref.number)
1-3 pages where you:
• Introduce yourself
• Describe your previous experience of relevance for the position (e.g. education, thesis work and, if applicable, any other research activities)
• Describe your future goals and future research focus

Other documents:
• Copies of bachelor and/or master’s thesis.
• Attested copies and transcripts of completed education, grades and other certificates, e.g. TOEFL test results.

Use the button at the foot of the page to reach the application form. 

Please note: The applicant is responsible for ensuring that the application is complete. Incomplete applications and applications sent by email will not be considered.


Application deadline: 2024-11-30



For questions, please contact:
Assistant Professor Gregor Lasser, MC2,
Gregor.lasser@chalmers.se

Professor Christian Fager, MC2,
Christian.fager@chalmers.se

Dr. Marie Ström,
Marie.strom1@saabgroup.com

*** 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 in Gothenburg conducts research and education in technology and natural sciences at a high international level. The university has 3100 employees and 10,000 students, and offers education in engineering, science, shipping and architecture. With scientific excellence as a basis, Chalmers promotes knowledge and technical solutions for a sustainable world. Through global commitment and entrepreneurship, we foster an innovative spirit, in close collaboration with wider society.
Chalmers was founded in 1829 and has the same motto today as it did then: Avancez – forward.