Andrew V. Haeff
Russian electrical engineer
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Andrew (Andrey) Vasily Haeff (12 January 1905 – 16 November 1990) was a Russian electrical engineer. Born in Moscow on 12 January 1905, Haeff's family fled to Harbin, China, when he was fifteen years old. He studied electrical and mechanical engineering at the Russian Polytechnic Institute in Harbin, graduating in 1928 and emigrating to the United States to study at the California Institute of Technology (Caltech). At Caltech, Haeff was awarded his MSc in 1929 and his PhD in 1932, with a thesis on an ultra-high frequency oscillator he later used in his invention of the traveling-wave tube amplifier.
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