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Handheld Millimeter Wave Imaging System based on a Two-Dimensional Multistatic Sparse Array

: Hussung, Raphael; Keil, Andreas; Friederich, Fabian


Markelz, A. ; Institute of Electrical and Electronics Engineers -IEEE-:
45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020 : November 8-13, 2020, a virtual event hosted from Buffalo, New York, USA
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-6621-6
ISBN: 978-1-7281-6620-9
International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) <45, 2020, Online>
Conference Paper
Fraunhofer ITWM ()

An active handheld millimeter wave imaging device for non-destructive testing has been developed. The system operates from 70 to 80 GHz and provides real-time imaging capabilities with depth information. The imaging concept is based on the effective aperture approach in combination with a sparse two-dimensional array of transmit and receive antennas. The system is designed to contain the antenna array, a signal-multiplexing-unit, FPGA-data-acquisition and signal synthesizers as well as a display for visualization in a single handheld enclosure. A USB 3.0 connection is used for data transfer to a mobile computer unit with consumer graphics card for parallel processing of the image reconstruction.