Encyclopedia > Heterodyne

Article Content

Heterodyne

In telecommunication, the term heterodyne has the following meanings:

1. To generate new frequencies by mixing two or more signals in a nonlinear device such as a vacuum tube, transistor, or diode mixer.

Note: A superheterodyne receiver converts any selected incoming frequency by heterodyne action to a common intermediate frequency where amplification and selectivity (filtering) are provided.

2. A frequency produced by mixing two or more signals in a nonlinear device.

Source: from Federal Standard 1037C and from MIL-STD-188

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Quadratic formula

... quadratic equation touches the x-axis in a single point.) If the discriminant is positive, then there are two different solutions x, both of which are real. ...