George Harold Brown

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George Harold Brown (born October 14, 1908 in Milwaukee , † December 11, 1987 in Princeton (New Jersey) ) was an American electrical engineer .

Life

George Harold Brown's father, a railroad worker , was of Scottish descent, while his mother's family was from Germany. After attending high school in Portage (Wisconsin) , where he was already experimenting with crystal detectors, he studied at the University of Wisconsin – Madison and earned his Bachelor of Science in 1930 , his Master's in 1931 and his PhD in 1933 for his work on broadcast antennas .

Brown then went to the RCA in Camden, New Jersey , where he led research on AM broadcast antennas, which were becoming the worldwide standard.

In 1936, Brown was commissioned to build an omnidirectional antenna and developed the Turnstile Antenna (turnstile antenna because it looks like a turnstile; cross dipole ). It offered high gain and wide bandwidth, which made it possible to transmit FM and TV signals over long distances. An absorption resistor added later increased the bandwidth and allowed TV images and sound to be broadcast from the same antenna.

In 1936 he developed his vestigial sideband filter (see residual sideband modulation ).

In 1942, Brown went to the RCA's new research laboratory, where he developed radio and radar antennas for the military.

Together with his colleagues, he developed a method to accelerate the production of penicillin by heating it with HF rays.