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Internship | Compact Filters for Phased Arrays

Posted 25 Mar 2024
Work experience
0 to 2 years
Full-time / part-time
Full-time
Job function
Degree level
Required language
Dutch (Fluent)

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Type dienstverband: Internship and graduation project Locatie: Den Haag Opleidingsniveau: WO Uren per week: Fulltime – 40

Internship | Compact Filters for Phased Arrays

How can we efficiently avoid interferences in a complex electromagnetic environment?

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What will be your role?

Active phased array antennas must comply with stringent requirements in terms of sensitivity to interference caused by other nearby radiating systems, especially in complex platforms, which are populated by an ever-increasing number of sensors and communication systems. Radio frequency interference can cause a number of issues, e.g., saturation of the array receiver, with consequent loss of sensitivity and missed detections, increased false alarm rates, or a reduced channel capacity for telecommunications. This performance degradation can be prevented by implementing frequency selective functions in the antenna panel and RF front end. For this purpose, filters can be inserted in the transmit/receive module of the individual antenna elements. Their function is to isolate the frequency band of the system thus making the antenna unable to transmit/receive a signal that can be received/transmitted by a neighbouring device. The main challenge in designing filters for wide scanning phased array resides in the limited available space of a radiating element which usually occupies an area of only λ/2 × λ/2 (half-wavelength-squared). Implementing miniaturized filters with acceptable performance (low loss and high rejection) is an open research problem.Several technology and implementation solutions are being studied at TNO achieve the required rejection. The goal of this project is to study and design novel solutions to enhance the performance of miniaturized integrated filters. The filter is required to achieve high rejection and higher order harmonic suppression with low loss and a size compatible with a phased array radiators. Innovative technologies, such as substrate integrated waveguide (SIW), represent promising solutions and will be analysed in detail during the internship.The Department of Radar Technology is a passionate and creative group of professionals (60 people) dedicated to the specification, development and evaluation of innovative, high-performance MMICs, miniaturised and integrated RF subsystems, antennas and front-ends. The department is at the heart of novel, game-changing radar system and signal processing concepts for the military, space and civil domains.

What we expect from you

You are in the final stages of your degree in electrical engineering or a similar degree and have some track record in the field of circuit design and transmission lines. You have experience in programming in Matlab and/or Python, you are pragmatic and focused on making things work. Next to technical expertise we value communication skills and a results-driven attitude.

What you'll get in return

You want to work on the precursor of your career; a work placement gives you an opportunity to take a good look at your prospective future employer. TNO goes a step further. It’s not just looking that interests us; you and your knowledge are essential to our innovation. That’s why we attach a great deal of value to your personal and professional development. You will, of course, be properly supervised during your work placement and be given the scope for you to get the best out of yourself. Naturally, we provide suitable work placement compensation.

TNO as an employer

TNO is an independent research organisation whose expertise and research make an important contribution to the competitiveness of companies and organisations, to the economy and to the quality of society as a whole. Innovation with purpose is what TNO stands for. With 3000 people we develop knowledge not for its own sake but for practical application. To create new products that make life more pleasant and valuable and help companies innovate. To find creative answers to the questions posed by society. We work for a variety of customers: governments, companies, service providers and non-governmental organisations.

The selection process

For this vacancy it is required that the AIVD issues a security clearance after conducting a security screening. Please visit for more information the AIVD website.

Has this job opening sparked your interest?

Then please feel free to apply on this vacancy! For further questions don’t hesitate to contact us.Due to Covid-19 and the consequent uncertainties and restrictions, students who are not residing in the Netherlands may currently not be able to start an internship or graduation project at TNO.

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More information about this vacancy?

Alessandro Garufo

More about Alessandro Garufo
  • E-mailadres:

    alessandro.garufo@tno.nl
  • Telefoon:

A portrait of the TNO internship

A portrait of the TNO internship

Innovation with purpose: that is what TNO stands for. We develop knowledge not for its own sake, but for practical application. TNO connects people and knowledge to create innovations that boost the competitive strength of industry and the well-being of society in a sustainable way.

Management Consulting
Den Haag
3,300 employees

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