### Where To Find This Example

#### AWR Version 14

This example was removed in V14.

#### AWR Version 13

### Design Notes

**DYNAMIC VOLTAGE CONTROLLED CURRENT SOURCE**

This project demonstrates setting up and using Dynamic Voltage Controlled Current Source (**DYN_VCCS**) in the AWR Design Environment to re-create the **CURTICE** FET model.

**Overview**

The Dynamic Voltage Controlled Current/Charge Sources (**DYN_VCCS / DYN_VCQS**) allows users to have a current or charge source that is dependant on an arbitrary number of voltage branches and parameters that are related through an expression (**EXPR**).

The model is dynamic in that the symbol will change real time based on the number of dependant voltages mentioned in the **EXPR** parameter. Similarly, the parameters will change real time based on the number of variables mentioned in the **EXPR** parameter.

For example, if "**EXPR=V0+A*V1"** then the **DYN_VCCS** will look like this:

Also, if "**EXPR=V0+A*V1+B*V2+C*V3"** then the **DYN_VCCS** will look like this:

In this example the **CURTICE** FET model is re-created with the **DYN_VCCS** element.

These elements are found under **Sources > Dependant > Nonlinear**.

**Intrinsic Dynamic Model Schematic**

This schematic shows the **CURTICE** equations being used in the **EXPR** field of the **DYN_VCCS**. Note that the symbol and parameters of the **DYN_VCCS** reflect the contents of this field.

**Extrinsic Dynamic Model Schematic**

This schematic shows the same **DYN_VCCS** as the "Intrinsic Dynamic Model" Schematic, but has the model wrapped with package parasitics

The parameters A0, A1, A2, and A3 of the extrinsic model are setup for tuning. Open up the tuner (**Simulate > Tune**) and change these values to see the effect that each has on the device IV and dynamic load line graphs.

**IV Intrinsic Dynamic Model Schematic**

This schematic shows the IV curve test bench for the "Intrinsic Dynamic Model." The graph shown on this schematic compares the DCIV curves for the "Intrinsic Dynamic Model" and "Extrinsic Dynamic Model" schematics.

**IV Extrinsic Dynamic Model Schematic**

This schematic shows the IV curve test bench for the "Extrinsic Dynamic Model." The graph shown on this schematic compares the DCIV curves for the "Intrinsic Dynamic Model" and "Extrinsic Dynamic Model" schematics.

**DLL Extrinsic Dynamic Model Schematic**

This schematic shows the dynamic load line test bench for the "Extrinsic Dynamic Model." The graph shown on this schematic shows the dynamic load lines and DCIV curves for the "Extrinsic Dynamic Model" schematic.

The parameters for the collector voltage, base voltage, and RF Input power are setup for tuning. Open the tuner (**Simulate > Tune**) and change these values to see the effect each has on the device IV and dynamic load line.

## Schematic - Intrinsic_Dynamic_Model

## Schematic - Extrinsic_Dynamic_Model

## Graph - DCIV Curves

## Graph - Dynamic Load Line