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VGA

Model variable gain amplifier

  • Library:
  • RF Blockset / Circuit Envelope / Elements

  • VGA block

Description

The VGA block models a RF Blockset™ variable gain amplifier (VGA). The Simulink® signal controls the non-linear gain.

The three Simulink input ports are Gain, IP2 (second-order intercept point), and IP3 (third-order intercept point). The port, In is the RF Blockset voltage input and the port OUT is RF Blockset voltage output.

Ports

Input

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Power gain signal, specified as a scalar in dB. The power gain signal is a Simulink signal.

Data Types: double

Second-order intercept point signal, specified as a scalar in dBm. The second-order intercept point signal is a Simulink signal.

Data Types: double

Third-order intercept point signal, specified as a scalar in dBm. The third-order intercept point signal is a Simulink signal.

Data Types: double

Parameters

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Input impedance of the VGA, specified as a scalar in ohms.

Output impedance of the VGA, specified as a scalar in ohms.

Input-referred or output-referred convention for IP2 or IP3 intercept points, specified as Input or Output.

Ground and hide negative terminals, specified as on or off. Select this parameter to internally ground and hide the negative terminals. Clear the option to expose the negative terminals. By exposing these terminals, you can connect them to other parts of your model.

More About

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See Also

Introduced in R2015b