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Postdoc in GaN MMIC Power Amplifiers for K-band Satellite Systems (2022-224-04723)

At the Technical Faculty of IT and Design, Department of Electronic Systems, a position as postdoc in GaN MMIC Power Amplifiers for K-band Satellite Systems is open for appointment from September 1st 2022, or as soon as possible thereafter. The position is available for 12 months. In the area of electronics engineering, Aalborg University is known worldwide for its high academic quality and the societal relevance of its research programmes. In electronics engineering, Aalborg University is known worldwide for its high academic quality and the societal relevance of its research programmes. The Department of Electronic Systems consists of more than 200 employees, of which about 40 % are international and about 90 are enrolled PhD students. The Department hosts 620 students. The Department's excellent research infrastructures and facilities accentuate its global position in teaching and research. The Department's research centres around communication, antennas, control systems, AI, sound, cybersecurity and robotics. The Department plays an active role in translating discoveries and results into practical applications with industrial partners and IPR. The Department provides teaching for several BSc and MSc programmes using a problem- and project-based learning model.

Job description

Satellite communication systems, such as the low Earth orbit (LEO) constellations, have evolved to accommodate high capacity, data rates and flexible area coverage expected in emerging applications. Enabling technologies such as beam steerable antennas and spectral efficient modulation schemes (e.g. OFDM) are adopted to fulfill the desired performance specifications. This further leads to the high linearity requirement on the power amplifiers in the system in order to handle the high peak-to-average power ratio presented by the spectral efficient signals.

Doherty Power Amplifiers (DPA) have the proven capability to operate efficiently, often combined with digital pre-distortion techniques, in the base-stations of terrestrial mobile networks. However, the stringent requirements on power efficiency, thermal management, dimension and weight in the satellites are preventing the use of commercially available off-the-shelf (COTS) DPA products for satellite systems. Therefore, the remarkably growing LEO satellite service has called for efforts in the implementation of DPAs for space systems.

This position is part of our plan to build and expand our chip design activities and you are expected to bring in new and complementary expertise to the team.

You will work on the characterization of GaN devices and the implementation of DPAs in the form of MMICs. The special focus is on the application of LEO satellites and the corresponding specification requirements will be followed. You should have extensive knowledge in RF and microwave circuits and systems, as well as experience in the design, modeling, and measurement of solid state power amplifiers. Knowledge and experience on analogy and digital linearization techniques would be an advantage. You are expected to hold a relevant Doctoral Degree within electronics and have proven publication records in high ranking journals.

You may obtain further professional information from Gert Frølund Pedersen by mail gfp@es.aau.dk.

Qualification requirements: 

Appointment as Postdoc presupposes scientific qualifications at PhD–level or similar scientific qualifications. The research potential of each applicant will be emphasized in the overall assessment. Appointment as a Postdoc cannot exceed a period of four years in total at Aalborg University.

The application must contain the following:

  • A motivated text wherein the reasons for applying, qualifications in relation to the position, and intentions and visions for the position are stated.
  • A current curriculum vitae.
  • Copies of relevant diplomas (Master of Science and PhD). On request you could be asked for an official English translation.
  • Scientific qualifications. A complete list of publications must be attached with an indication of the works the applicant wishes to be considered. You may attach up to 5 publications.
  • Dissemination qualifications, including participation on committees or boards, participation in organisations and the like.
  • Additional qualifications in relation to the position. References/recommendations.
  • Personal data.

The applications are only to be submitted online by using the "Apply online" button below.

Shortlisting will be applied. After the review of any objections regarding the assessment committee, the head of department, with assistance from the chair of the assessment committee, selects the candidates to be assessed. All applicants will be informed as to whether they will advance to assessment or not.

AAU wishes to reflect the diversity of society and welcomes applications from all qualified candidates regardless of personal background or belief.

For further information concerning the application procedure please contact Gritt Larsen by mail est-st-hr@adm.aau.dk or phone (+45) 9940 3892. Information regarding guidelines, ministerial circular in force and procedures can be seen here 



Employment is in accordance with the Ministerial Order on the Appointment of Academic Staff at Universities (the Appointment Order) and the Ministry of Finance's current Job Structure for Academic Staff at Universities. Employment and salary are in accordance with the collective agreement for state-employed academics.   

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