The Heterodyne "Principle" A working definition of heterodyning: To generate new frequencies by mixing two or more signals. in a nonlinear device such as a vacuum tube, transistor, or diode mixer.
Also asked, what is Heterodyning in radio signal processing?
The "heterodyne" or "beat" receiver has a local oscillator that produces a radio signal adjusted to be close in frequency to the incoming signal being received. When the two signals are mixed, a "beat" frequency equal to the difference between the two frequencies is created.
What is image frequency and how it is rejected?
The image rejection ratio, or image frequency rejection ratio, is the ratio of the intermediate-frequency (IF) signal level produced by the desired input frequency to that produced by the image frequency. The image rejection ratio is usually expressed in dB.
What is RF and IF?
The basic concept of operation is as follows. For the receiver, the signal from the antenna is amplified in the radio frequency (RF) stage. The output of the RF stage is one input of a mixer. A Local Oscillator (LO) is the other input. The output of the mixer is at the Intermediate Frequency (IF).
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