Hans-Georg Unger was born on September 14, 1926 in Braunschweig, Germany. He studied electrical engineering at the Technical University of Braunschweig, and became a development engineer and head of the Laboratory of Microwave Research at Siemens in Munich in 1951. Unger then joined Bell Laboratories in the United States, where he pioneered the development of communication via microwaves through the wave guide. In 1960, he joined the faculty of the Technical University of Brauschweig, where he became a professor of High Frequency Technology and led the Institute for High Frequency Technology.
Unger was the 1988 recipient of the IEEE Heinrich Hertz Medal.