File:Superheterodyne receiver block diagram 2.svg

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Captions

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Block diagram of a superheterodyne radio receiver

Summary

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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 used in almost all modern radio receivers. The incoming radio signal from the antenna (left) is passed through an RF filter to attenuate some undesired signals, amplified in a radio frequency (RF) amplifier, and mixed with an unmodulated sine wave from a local oscillator. The result is a "beat" frequency or heterodyne at the difference between the input signal and local oscillator frequencies, a lower frequency called the intermediate frequency. The IF signal selected and strengthened by several IF stages that bandpass filter and amplify the signal. The IF signal is then applied to a demodulator that extracts the modulated audio signal. An audio amplifier further amplifies the signal, and the speaker makes it audible.

. Superheterodyne receiver block diagram.svg is identical to this image except it doesn't show the image rejection filter
Date
Source Own work
Author Chetvorno

Licensing

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero 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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Date/TimeThumbnailDimensionsUserComment
current17:47, 8 March 2021Thumbnail for version as of 17:47, 8 March 20212,243 × 713 (27 KB)Khesus99 (talk | contribs)File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for es.
21:33, 12 January 2016Thumbnail for version as of 21:33, 12 January 20162,243 × 713 (25 KB)Glrx (talk | contribs)Change "Image Filter" to "RF Filter". The filter may do much more than just suppress the image. There are also image reject mixers.
13:58, 11 January 2016Thumbnail for version as of 13:58, 11 January 20162,243 × 713 (25 KB)Chetvorno (talk | contribs)Improved mixer symbol
14:16, 8 January 2016Thumbnail for version as of 14:16, 8 January 20162,243 × 713 (25 KB)Chetvorno (talk | contribs)User created page with UploadWizard

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