Dr. Çetinkaya worked on the topic of "Microwave and Millimeter-Wave Radar Imaging Applications with MIMO Arrays" during his doctoral studies. The co-examiners were Prof. Dr. Martin, Prof. Dr. Vogt, Prof. Dr. Pohl, Prof. Dr. Rolfes and Prof. Dr. Hofmann. We congratulate Dr.-Ing. Harun Çetinkaya on his doctorate and wish him all the best for his future!