File:Amplitude modulation detection.png
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Summary
| Description |
English: Graphs of the detection (demodulation) process for amplitude modulated (AM) radio signals, adapted from a 1922 radio book. (A) The amplitude modulated signal applied to the detector. (B) The signal at the output of the detector. The detector allows current in only one direction, stripping off the excursions of the signal on one side. (C) After filtering. The filter smoothes the output, removing the radio frequency carrier pulses, leaving the audio frequency signal (modulation). Alterations to image: added vertical axis to top drawing, and colored labels. |
| Date | |
| Source | Downloaded 2010-01-20 from Harry J. Marx, Adrian Van Muffling (1922) Radio Reception: A simple and complete explanation of the principles of radio telephony, G.P. Putnam's sons, New York, p.43, fig.27 on Google Books |
| Author | Harry J. Marx or Adrian Van Muffling |
| Permission (Reusing this file) |
Public Domain in USA - Published before 1923 in USA |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1930, and if not then due to lack of notice or renewal. See this page for further explanation.
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