Master in Microwaves, Electromagnetism, Communications, Electronics Engineering: Technologies and Techniques for highly linear broadband Traveling Wave Tube Amplifiers at ESTEC, Noordwijk, NL

Your mission:

Have you (almost) completed your degree studies? Are you inspired by space exploration and keen to pursue a career in this exciting field? If so, perhaps you should take a closer look at the German Trainee Programme. Organised by DLR, it offers you the chance to work shoulder to shoulder with experts from the 20 member states of ESA - keeping your finger on the pulse of Europe‘s space programmes. Over a period up to 24 months, you will actively contribute to the latest research and/or technology projects. This is complemented by a generous scholarship. What better way to launch your career in international space business? The next GTP commences on 01.02.2015.

Radio Frequency Systems, Payload and Technology Division (TEC-ET) is part of Electrical Engineering Department and of Technical and Quality and Management Directorate. The Division is responsible for systems having a Radio Frequency space/ground interface and covers payloads, instruments, user ground/space subsystems and technologies definition, requirement specification, design, performance evaluation, development, integration, testing and associated laboratory facilities which are to be defined, specified, developed and procured either for ESA projects and technology programmes or external customers. The Payload Engineering Section (TEC-ETP), within the Radio Frequency Systems, Payload and Technology Division covers the research, design, development and testing of telecommunication payloads (transparent and regenerative), microwave and millimetre wave remote sensing instruments, and navigation payloads exploiting analogue, digital and optical on-board technologies.

Background:

The ever increasing demand for higher quality TV transmissions and broadband connectivity for interactive services via satellite has generated the need to define new communication standards for broadcast and broadband satellite systems, aiming at making the satellite link more efficient. Of particular criticality is the on-board traveling-wave tube amplifier (TWTA) which provides efficient and high power amplification from L- to Ka-band, but whose nonlinearity may strongly affect the performance of the communications link particularly in the presence of high-order modulations. In addition, in interactive broadband satellite communications systems, smaller antenna beams allow supporting increased throughput and higher data rates but imply higher load and beam variability in space and time. A flexible allocation of bandwidth and power to beams would allow serving the hot spots without resulting in wasted capacity/power/bandwidth in the cold spots and Flexible Traveling Wave Tubes (Flex-TWTAs) are employed to help coping with the variation of traffic pattern distribution during the long satellite lifetime by allowing appropriate power and bandwidth variations.

Tasks:

  • to evaluate the performance of a (L)TWT within a modern communication satellite link employing complex, non-constant envelope high-order modulations, in single and multi-carrier operation
  • to set-up an automatic test bench and characterise the behaviour of a flexible TWTA when submitted to a realistic flexible payload mission profile
  • analyse amplifier technologies, simulate and design travelling wave tubes for telecom applications requiring broadband and high-linearity behaviour (in particular, the filter helix concept shall be investigated to avoid inter-modulation products)

Applications received until 7th September 2014 will be considered.

Your qualifications:

  • German citizenship is absolutely necessary
  • applicants should have just completed (conclusion not older than two years) or be in their final year of a university course at Master’s level in Telecommunications/Electrical/Payload and Microwave Engineering
  • good knowledge of RF and microwave systems is required as well as some experience in RF test of microwave equipments
  • experience in computer programming and MATLAB is also required
  • background knowledge on satellite telecommunications techniques and systems
  • familiarity with Travelling Wave Tube Amplifiers is an asset
  • candidates must be fluent in English or French, the official languages of the agency

Your benefits:

Look forward to a fulfilling job with an employer who appreciates your commitment and supports your personal and professional development. Our unique infrastructure offers you a working environment in which you have unparalled scope to develop your creative ideas and accomplish your professional objectives. Disabled applicants with equivalent qualifications will be given preferential treatment.

German Trainee Programme

February 2015

12 up to 24 months

attractive scholarship

Full-time

Contact person :

Larissa Seidlez

Strategy and International Relations

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German Trainee Programme

Career opportunities

As a child she dreamt of adventures in space; as a teenager she attended space conferences; she went on to become a trainee at ESA; and today she is a...

Kick Off Meeting for the German Trainee Programme 2010