This chapter describes the model source instruments. This are components which generate a "behavior model" for a specific real-world component.

This behavior model can be a S parameter file with sweeped frequency and - if decided - also sweep power.

RS_SnP_Model

Symbol and Description

 

 

 

 

The component will control a Vector Network Analyzer and create a S parameter file for a 1-Port / 2-Port / 3-Port / 4-Port DUT.

Parameters

Name

Description

Default

Unit

Type

RunRFSetup

Set RF parameters: 1, 0

1

--

bool

RunPreSim

Measurement is done before the simulation: 1, 0

1

--

bool

RunPostSim

Measurement is done after the simulation: 1, 0

0

--

bool

RunPreset

Preset the instrument: 1, 0

1

--

bool

FreqStart

Starting frequency for frequency sweep

10 MHz

Hz

real

FreqStop

Stop frequency for frequency sweep

1 GHz

Hz

real

FreqStep

Frequency steps for frequency sweep 1)

10 MHz

Hz

real

Pins and Files

Name

Description

Signal Type

Pin "REF"

Reference Port

S parameter

Pin "P1"…"P4"

Ports of the DUT

S parameter

File Format

SnP file format

---

 

1)

The sweep direction is taken from LevelStart and LevelStop, the sign of LevelStep is ignored and will be assigned to match the sweep direction derived from LevelStart and LevelStop.
The resulting maximum number of sweep points for the ZVR / ZVC is limited to 2001 for 1-port measurement and 501 for 2-port measurement.

 

Notes

1)

RunPreSim and RunPostSim determine if the communication with the instrument shall be done before and/or after the simulation of the circuit.
If you do not the simulator to control the component, select 0 for both values.

2)

If RunPreset is selected, the instrument will be reseted and all channel assignments, … will be executed before other settings are performed on the instrument.
If RunPreset is not selected, the necessary channels are queried automatically from the instrument.
S parameters distributed on several channels can not be used for this measurement.

3)

If RunRFSetup or RunPreset is selected, the settings for FreqStart, FreqStop, and FreqStep will be executed.

4)

The data from the instrument are always stored as S1P / S2P / S3P / S4P files with the name "RS_SxP.sxp" (x=1..4) in the "\data" directory of the current project.


ZVx_P2D_Model

Symbol and Description

The component will control a Vector Network Analyzer and create a S parameter file for a 2-Port DUT. Additionally, the power at the ports will be sweeped according to the settings.

Parameters

Name

Description

Default

Unit

Type

RunRFSetup

Set RF parameters: 1, 0

1

--

bool

RunPreSim

Measurement is done before the simulation: 1, 0

1

--

bool

RunPostSim

Measurement is done after the simulation: 1, 0

0

--

bool

RunPreset

Preset the instrument: 1, 0

1

--

bool

FreqStart

Starting frequency for frequency sweep

10 MHz

Hz

real

FreqStop

Stop frequency for frequency sweep

1 GHz

Hz

real

FreqStep

Frequency steps for frequency sweep 1)

10 MHz

Hz

real

LevelStart

Starting level for level sweep

-30 dBm

dBm

real

LevelStop

Stop level for level sweep

-10 dBm

dBm

real

LevelStep

Level steps for level sweep 1)

1 dB

dB

real

LevelP2Offset

Offset between P1 = Pin and P2 = Pout (>0: P2 > P1) 2)

0 dB

dB

real

 

Pins and Files

Name

Description

Signal Type

Pin "IN"

Port 1 of the DUT

S parameter

Pin "OUT"

Port 2 of the DUT

S parameter

File Formats

S2D file format

---

 

1)

The sweep direction is taken from LevelStart and LevelStop, the sign of LevelStep is ignored and will be assigned to match the sweep direction derived from LevelStart and LevelStop.

2)

not available for ZVB

 

Notes

1)

RunPreSim and RunPostSim determine if the communication with the instrument shall be done before and/or after the simulation of the circuit.
If you do not the simulator to control the component, select 0 for both values.

2)

If RunPreset is selected, the instrument will be reseted and all channel assignments, … will be executed before other settings are performed on the instrument.
If RunPreset is not selected, the necessary channels are queried automatically from the instrument.
S parameters distributed on several channels can not be used for this measurement.

3)

If RunRFSetup or RunPreset is selected, the settings for FreqStart, FreqStop, and FreqStep will be executed.

4)

The data from the instrument are always stored as P2D files with the name "ZVx_P2D.p2d" in the "\data" directory of the current project.

 

Required Licenses

This component requires the license "Design Environment" (ads_schematic) for placing the component and "RF Systems Models" (mdl_systemlib) for simulation.