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Postdoctoral Position in Microwave Electronics and Remote Sensing

Chalmers University of Technology has an opening postdoctoral position in nanotechnology. The funding allows successful candidates to work for three years in the first instance. Applications should be sent before March 01, 2019.

The Department of Microtechnology and Nanoscience focuses on research, innovation and education within the fields of future electronics, photonics, bio- and nanosystems. A close collaboration with Swedish and international partners within academia, industry and society enables scientific excellence and creates an innovative environment. In addition to the 200 researchers and PhD students, MC2 houses a cleanroom for micro- and nanofabrication with the latest equipment.

Information about the the project

The position is a part of a collaboration project between industrial partners and two departments at Chalmers: MC2 and the department of signals and systems (S2). The project focuses on development of hardware for the next generation of millimeter wave automotive sensors. In a part of this project we want to verify a new method for road surface identification. The suggested method takes advantage of the frontal "natural" illumination of the road surface provided by the cold sky. It requires no active illumination from a vehicle and therefore, unlike other techniques, can be used to detect the type of the surface in front of the vehicle. This feature is very useful when a patch of ice is located in front of a moving car and is detected before the wheels become in contact with the ice. The surface recognition is possible due to the fact that water and ice have different dielectric properties. In addition they represent specular surfaces, which makes reflected radiation polarized. Measuring the surface temperature at two orthogonal polarizations gives the possibility to calculate the level of polarization and better distinguish water or ice covered surface from dry surfaces.

To measure the radio temperature of the surface we are going to construct a Radiometer instrument, which is a sensitive receiver that measures the combination of emitted and reflected (from the sky) thermal radiation emerging from the surface. The receiver will cover frequencies between 80 GHz to 100 GHz and will include low-noise amplifier, a mixer, an intermediate (IF) amplifier and local oscillator (LO) generation. For the first prototype of the radiometer we plan to use commercially available components. Development of dedicated MMIC is foreseen depending on the results from the first prototype.

At the microwave electronics laboratory, department of microtechnology and nanoscience (MC2), we perform research in developing integrated circuits and systems for frequencies of up to 400 GHz. Most of our work is project oriented together with companies and institutes, where MEL is responsible for hardware development. We have successfully developed radio frequency (RF) integrated microwave circuits (MMIC), components and systems for applications in security imaging, high data rate communications and monitoring of industrial processes. We are looking forward to expanding the areas of applications of our research.

Major responsibilities

Modeling of brightness temperature of layered structures of different composition, roughness and thickness. Experimental work to verify the modeling and confirm the detectability of different surfaces and various thicknesses. Depending on the results we may need to upgrade the radiometer hardware, this activity will cover the design and characterization of mm-wave components such as amplifiers and mixers. Suggestion and implementation of an appropriate calibration procedure to calibrate out the gain variations of the radiometer. Extending the technique and the hardware to remote measurement of the dielectric properties of objects using polarimetric measurements of the objects’ brightness temperature.

Full-time temporary employment. The position is limited to a maximum of two years (1+1).

Qualifications

A successful postdoc candidate holds a PhD degree in applied physics, engineering physics, remote sensing, electrical engineering or equivalent. The Phd degree should generally not be older than three years. Experience in microwave remote sensing including radiometric instruments and techniques for calibration is essential. It is beneficial if you have an experience in the design and characterization of microwave and mm-wave electronics.

The position requires sound verbal and written communication skills in English. Chalmers offers Swedish courses.

Chalmers offers a cultivating and inspiring working environment in the dynamic city ofGothenburg.

Read more aboutworking at Chalmersand ourbenefitsfor employees.

Application procedure

The application should be marked with Ref 20190026 and written in English.

CV: (Please name the document as: CV, Surname, Ref.

CV, include complete list of publications

Previous teaching and pedagogical experiences

Two references that we can contact.

Personal letter:(Please name the document as: Personal letter, Family name, Ref.

1-3 pages where you introduce yourselfand present your qualifications.

Previous research fields and main research results.

Future goals and research focus. Are there any specific projects and research issues you are primarily interested in?

Attested copies of completed education, grades and other certificates.

Application deadline: 1 March 2019

Vessen Vassilev, vessen.vassilev@chalmers.se, 031 772 1894

Ashraf Uz Zaman, zaman@chalmers.se, 031 772 1794


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