Armstrong, Edwin Howard
Published: August 21, 2008, 8:43 pm
Updated: August 21, 2008, 8:43 pm
This article has been reviewed by the following Topic Editor:
Tom Lawrence
Edwin Howard Armstrong.
Edwin Howard Armstrong (1890-1954), American electrical engineer and inventor of basic electronic circuits essential to modern radio, radar, and television. Often noted as one of the radio's leading inventors, Armstrong invented the regenerative circuit (1912), which revolutionized wireless radio communication by amplifying weak radio signals without distortion far more effectively than other radio receivers of that time; the superheterodyne circuit (1918), which further improved the ability to receive radio signals; and the complete Frequency Modualtion (FM) system (1933) that would eventually displace Amplitude Modulation (AM) technology. In 1940, Armstrong was issued a permit to build the first FM station, which he erected at his own expense on the Hudson River Palisades at Alpine, N.J.
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Citation
Cutler J. Cleveland (Lead Author);Tom Lawrence (Topic Editor) "Armstrong, Edwin Howard". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth August 21, 2008; Last revised Date August 21, 2008; Retrieved May 24, 2013 <http://www.eoearth.org/article/Armstrong,_Edwin_Howard>
The Author
Cutler J. Cleveland is Professor of Earth and Environment at Boston University, where he also is on the faculty of the Center for Energy and Environmental Studies. Professor Cleveland is Editor-in-Chief of the Encyclopedia of Energy (Elsevier, 2004), winner of an American Library Association award, the Dictionary of Energy (Elsevier, 2005), Handbook of Energy (Elsevier, forthcoming), and is the Founding Editor-in-Chief of the Encyclopedia of Earth. He is the recipient of the Adelma ... (Full Bio)
Edwin Howard Armstrong.
Edwin Howard Armstrong (1890-1954), American electrical engineer and inventor of basic electronic circuits essential to modern radio, radar, and television. Often noted as one of the radio's leading inventors, Armstrong invented the regenerative circuit (1912), which revolutionized wireless radio communication by amplifying weak radio signals without distortion far more effectively than other radio receivers of that time; the superheterodyne circuit (1918), which further improved the ability to receive radio signals; and the complete Frequency Modualtion (FM) system (1933) that would eventually displace Amplitude Modulation (AM) technology. In 1940, Armstrong was issued a permit to build the first FM station, which he erected at his own expense on the Hudson River Palisades at Alpine, N.J.
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