Low-cost implementation of a millimeter wave imaging system operating in W-band

In this paper a low-cost mm-wave imaging system operating in W-band is presented. Multiple used techniques lead to reduced system costs, increased application versatility and a simplified setup. These goals are achieved by using packaged 77-GHz devices including an antenna-in-package, substituting physical focusing elements with imaging algorithms, and a multiplier-based topology which allows realizing coherent measurement setups on standard FR4 printed circuit boards. Test measurements conducted with the realized prototype demonstrate the applicability of the proposed approach.