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SFFM Voltage Source

Single-frequency frequency-modulated voltage source

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  • SFFM Voltage Source block

Libraries:
Simscape / Electrical / Additional Components / SPICE Sources

Description

The SFFM Voltage Source block represents a frequency-modulated AC voltage source whose output voltage value is independent of the current through the source. The following equation describes the output voltage as a function of time:

Vout = VO+VA*sin((2π*FC*Time)+MI*sin(2π*FS*Time))

where:

  • V0 is the Voltage offset, VO parameter value.

  • VA is the Voltage amplitude, VA parameter value.

  • FC is the Carrier frequency, FC parameter value.

  • MI is the Modulation index, MI parameter value.

  • FS is the Signal frequency, FS parameter value.

Examples

Frequency-Dependent Transmission Line

Frequency-Dependent Transmission Line

A custom frequency-dependent transmission line model. The characteristic admittance and propagation function are first derived from the frequency-dependent resistance, reactance, and susceptance. The derived values are fitted using RF Toolbox. The Universal Line Model (ULM) [1] is then implemented in Simscape based on the fitted parameters. The results from the frequency-dependent transmission line model and the classic pi-section transmission line model are compared.

Ports

Conserving

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Electrical conserving port associated with the SFFM voltage source positive voltage

Electrical conserving port associated with the SFFM voltage source negative voltage

Parameters

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Magnitude of the time-independent part of the output voltage.

Magnitude of the sinusoidal part of the output voltage.

Frequency of the carrier wave. The value must be greater than or equal to 0.

Amount by which the modulated signal varies around its unmodulated level. The value must be greater than or equal to 0.

Frequency of the modulated signal. The value must be greater than or equal to 0.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2008a

See Also

Simscape Blocks

Functions

Topics