Hans Hollmann

Physicist, Deceased Person

1899 – 1960

17

Who was Hans Hollmann?

Hans Erich Hollmann was a German electronic specialist who made several breakthroughs in the development of radar.

Hollmann was born in Solingen, Germany. He became interested in radio and even as a teenager subscribed to the technical magazines of the day. Late in World War I he became a prisoner of war of the French and did not return to Germany until 1920. He then studied at the Technical University at Darmstadt until he received his doctorate in 1928.

Hollmannn's doctoral research included the development of an ultra-short-wave transmitter and receiver for centimeter and decimeter waves. This gained the attention of Telefunken, and ultimately led to their development of the first microwave telecommunication system.

In 1930 Hollmann moved to the Heinrich-Hertz Institute for Oscillatory Research in Berlin. There he continued studies in microwaves and cathode ray tubes and also worked on the ionosphere research and radio astronomy. In 1933 Hollmann became a lecturer at the Technical University in Berlin.

In January 1934, Hans-Karl von Willisen and Paul-Günther Erbslöh started a company called Gesellschaft für Elektroakustische und Mechanische Apparate. With Hollmann as a consultant, GEMA built a system using interference detection in the autumn of 1934. It operated at 50 cm wavelength and could detect ships up to 10-km distance. By 1935, they used pulse-moduletion, allowing measurement of range, and developed the technology into two applications. For naval use, the Seetakt system used a wavelength of 80 cm. A land based version at 120 cm wavelength was also developed as Freya.

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Born
Nov 4, 1899
Solingen
Nationality
  • Germany
Profession
Died
Nov 19, 1960
Los Angeles

Submitted
on July 23, 2013

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