File:Superheterodyne receiver block diagram.svg
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Size of this PNG preview of this SVG file: 800 × 283 pixels. Other resolutions: 320 × 113 pixels | 640 × 226 pixels | 1,024 × 362 pixels | 1,280 × 453 pixels | 2,560 × 905 pixels | 2,013 × 712 pixels.
Original file (SVG file, nominally 2,013 × 712 pixels, file size: 15 KB)
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Summary[edit]
| Description |
English: Block diagram of a single conversion superheterodyne radio receiver. Invented by Edwin Armstrong in 1918 during World War 1, the superheterodyne is the design of almost all modern radio receivers. The incoming radio signal from the antenna is first amplified in a radio frequency (RF) amplifier, then mixed with an unmodulated sine wave from a local oscillator in a nonlinear transistor called a mixer. This produces a "beat" frequency or heterodyne at the difference between these two frequencies, a lower frequency called the intermediate frequency. This is bandpass filtered in several stages of tuned IF amplification, and applied to a demodulator which extracts the audio modulation (sound) from the radio carrier wave. This is amplified by an audio amplifier and applied to the speaker. |
| Date | |
| Source | Own work |
| Author | Chetvorno |
| SVG development |  This diagram was created with Inkscape, or with something else.  This diagram uses translateable embedded text. |
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I, the copyright holder of this work, hereby publish it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:21, 9 May 2017 | | 2,013 × 712 (15 KB) | Chetvorno (talk | contribs) | Replaced invalid version with "plain SVG" version which passes validation |
| 14:00, 11 January 2016 |  | 2,013 × 712 (20 KB) | Chetvorno (talk | contribs) | Improved mixer symbol | |
| 01:53, 7 January 2016 |  | 2,013 × 712 (20 KB) | Chetvorno (talk | contribs) | Changed colors | |
| 00:50, 7 January 2016 |  | 2,013 × 712 (21 KB) | Chetvorno (talk | contribs) | Again with the tweaking | |
| 00:47, 7 January 2016 |  | 2,013 × 712 (21 KB) | Chetvorno (talk | contribs) | Tweaked position of multiplication sign | |
| 00:45, 7 January 2016 |  | 2,013 × 712 (20 KB) | Chetvorno (talk | contribs) | Tweaked text size and position to prevent overlapping | |
| 00:40, 7 January 2016 |  | 2,013 × 712 (20 KB) | Chetvorno (talk | contribs) | User created page with UploadWizard |
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