Alexander Meissner

Alexander Meissner (September 14, 1883 – January 3, 1958) was an Austrian engineer and physicist. He was born in Vienna and died in Berlin.

His field of interest was: antenna design, amplification and detection advanced the development of radio telegraphy. In March 1913 he discovered the principle of positive feedback independently of Edwin Armstrong, and by applying positive feedback to vacuum tube amplifiers, Meissner co-invented the electronic oscillator,^[1] which became the basis of radio transmission by 1920 and has innumerable uses today. The inductively-coupled oscillator circuit he invented is today known as the Meissner oscillator.

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DE 291604, Meissner, Alexander, "Einrichtung zur Erzeugung elektrischer Schwingungen (Equipment for production of electrical oscillations)", published April 10, 1913, issued June 23, 1919 , in German. The patent does not mention Meissner; the patent was issued to the Gesellschaft für Drahtlose Telegraphie mbH (Corporation for Wireless Telegraphy).
- See also: Meissner, Alexander. "Production of waves by cathode ray tubes" U.S. Patent No. 1,924,796. (filed: 16 March 1914; issued: 29 August 1933).

[1] DE 291604, Meissner, Alexander, "Einrichtung zur Erzeugung elektrischer Schwingungen (Equipment for production of electrical oscillations)", published April 10, 1913, issued June 23, 1919 , in German. The patent does not mention Meissner; the patent was issued to the Gesellschaft für Drahtlose Telegraphie mbH (Corporation for Wireless Telegraphy).
See also: Meissner, Alexander. "Production of waves by cathode ray tubes" U.S. Patent No. 1,924,796. (filed: 16 March 1914; issued: 29 August 1933).

[2] See also: Meissner, Alexander. "Production of waves by cathode ray tubes" U.S. Patent No. 1,924,796. (filed: 16 March 1914; issued: 29 August 1933).

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