Edwin Howard Armstrong

Edwin Howard Armstrong (December 18, 1890 – February 1, 1954) was an American electrical engineer and inventor, who developed FM (frequency modulation) radio and the superheterodyne receiver system.

Edwin H. Armstrong
Sketch of Armstrong, c. 1954
Born(1890-12-18)December 18, 1890
Chelsea, Manhattan, New York, US
DiedFebruary 1, 1954(1954-02-01) (aged 63)
EducationColumbia University
Occupation(s)Electrical engineer, inventor
Known forArmstrong oscillator
Armstrong Tower
Armstrong phase modulator
Autodyne
FM broadcasting
FM radio
Frequency modulation
Regenerative circuit
Superheterodyne receiver
KE2XCC
W2XMN
Spouse
(m. 1922)
AwardsIEEE Medal of Honor (1917)
Holley Medal (1940)
Franklin Medal (1941)
IEEE Edison Medal (1942)
Washington Award (1951)

He held 42 patents and received numerous awards, including the first Medal of Honor awarded by the Institute of Radio Engineers (now IEEE), the French Legion of Honor, the 1941 Franklin Medal and the 1942 Edison Medal. He achieved the rank of major in the U.S. Army Signal Corps during World War I and was often referred to as "Major Armstrong" during his career. He was inducted into the National Inventors Hall of Fame and included in the International Telecommunication Union's roster of great inventors. Armstrong attended Columbia University, and served as a professor there for most of his life.

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