Alexanderson antenna


Alexanderson antenna
s.
antena Alexanderson, antena de Alexanderson.

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  • Alexanderson alternator — An Alexanderson alternator is a rotating machine invented by Ernst Alexanderson for the generation of high frequency alternating current up to 100 kHz, for the purpose of radio communication. It is on the list of IEEE Milestones as a key… …   Wikipedia

  • Ernst Alexanderson — Infobox Scientist name = Ernst Frederick Werner Alexanderso caption = birth date = birth date|1878|1|25 birth place = Uppsala, Sweden death date = death date and age|1975|5|14|1878|1|25 death place = residence = United States nationality =… …   Wikipedia

  • Ernst Alexanderson — (Uppsala (Suède), 25 janvier 1878 – 14 mai 1975) était un ingénieur électrique suédo américain. C est l un des pionniers du développement de la radio et de la télévision. Ernst Alexanderson a été introduis dans le National Inventors Hall of Fame… …   Wikipédia en Français

  • Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …   Wikipedia

  • Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… …   Wikipedia

  • Reginald Fessenden — Infobox Celebrity name = Reginald Fessenden caption = The Father of Radio Broadcasting birth date = birth date|1866|10|6|mf=y birth place = East Bolton, Quebec, Canada death date = death date and age|1932|7|22|1866|10|6|mf=y death place = Bermuda …   Wikipedia

  • RCA — Infobox Defunct Company company name = RCA Corporation company slogan = The most trusted name in electronics. fate = Taken over by General Electric and broken up successor = foundation = 1919 defunct = 1988 location = New York, USA… …   Wikipedia

  • Transmitter — For biologic transmitters, see transmitter substance. Commercial FM broadcasting transmitter at radio station WDET FM, Wayne State University, Detroit, USA. It broadcasts at 101.9 MHz with a radiated power of 48 kW. In electronics and… …   Wikipedia

  • Edwin Howard Armstrong — Edwin H. Armstrong Developed and advanced the utility of FM technology. Born December 18, 1890(1890 12 18) New York, New York U.S …   Wikipedia

  • Harold Beverage — Infobox Scientist name = Harold Beverage caption = birth date = 14 October 1893 birth place = North Haven, ME death date = 27 January 1993 death place = Port Jefferson, NY residence = Stony Brook, NY nationality = American field = Electrical… …   Wikipedia

  • Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …   Wikipedia