# downConvert

Mixer-based down-conversion object

### Syntax

None- object only.

### Usage

Use this to mix two signals together in a down-converter configuration, translating an RF frequency to a lower IF frequency by mixing with an LO. Note that RF-IF and LO-IF isolation may be specified.

### Location

menu: veeos ==> Signal Processing ==> Modules ==> downConvert

library: sigLib

### Example

### Notes

In communications it is very common to place a baseband signal on carrier that is at much higher frequency than the baseband. This allows the broadband baseband signal to be treated as a narrowband signal, moves it to a convenient frequency for transmission and allows many other possible processing steps. Conversely it is common to reverse this up-conversion with a down-conversion to retrieve the original baseband signal. This object uses a mixer to mathematically model such frequency conversion. Note that while lekage is allowed within the model, it is not specifically accounted for as higher-level mixing products.

### Reference

Any basic communications text will talk about this subject.

### Dependencies

Uses aMixer to simulate the actual mixing action.

### Supported On

VEE 7.0+, all platforms

### See Also

analogAmp, analogFilter, upConvert

© 2015-2017. All Rights Reserved. Stan Bischof (stan@worldbadminton.com). Last updated 24 February 2017 08:58.