MAKE A MEME
View Large Image
| View Original: | Superheterodyne receiver block diagram.svg (2013x711) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Superheterodyne receiver block diagram.svg 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 2016-01-06 own Chetvorno other versions cc-zero Superheterodyne circuits Uploaded with UploadWizard | ||||
