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MIMO system for fast imaging at 90 GHz

: Herschel, R.; Nowok, S.; Warok, P.; Zimmermann, R.; Lang, S.A.; Pohl, N.


45th European Microwave Conference, EuMC 2015. Proceedings : 7-10 September 2015, Paris, France
London: Horizon House, 2015
ISBN: 978-2-8748-7039-2
European Microwave Conference (EuMC) <45, 2015, Paris>
Conference Paper
Fraunhofer FHR ()

A millimeter wave imaging system operating around 90 GHz with 7.5 GHz bandwidth is presented. 2D images with 20 mm resolution in range and 3.2° in azimuth are obtained with an 1×4 MIMO approach. The performance of receiver and transmitter modules driven by a Direct Digital Synthesizer is discussed. Experimental data on radar imaging between 1 and 4 m is shown and the used calibration is discussed in further detail. The system successfully achieves a dynamic range of more than 40 dB.