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RF circuit or rfbudget vs. rfckt Objects

This topic helps you to determine when to use RF circuit, rfbudget, and rfckt objects in your RF analysis workflow.

RF Toolbox™ provides two approaches to construct and analyze RF networks:

  1. Networks built using elements based on the RF circuit and rfbudget objects.

  2. Networks built with rfckt objects.

To understand when to use RF circuit, rfbudget, and rfckt objects, see this table.

FeaturesRF circuit or rfbudgetrfckt Objects
Construct networks with N-ports Yes (RF circuit)No
Import N-port S-parameters Yes (RF circuit)No
Matching network design Yes (RF circuit)Yes
Filter design YesYes
S-parameter analysis Yes (N-port in RF circuit, two-port in rfbudget)Yes (Two-port networks only)
Noise analysis Yes (rfbudget)Yes
Group delay analysis Yes (RF circuit)Yes
Nonlinearity analysis Yes (rfbudget — Friis and Harmonic Balance methods)Yes (Friis method)
AM-PM definitions of nonlinear amplifier

Yes (since R2023b)

Compatibility Compatible with RF Blockset™ Circuit Envelope library blocks (You can import and export rfbudget objects to Circuit Envelope library).Compatible with RF Blockset Equivalent Baseband library blocks.

You can use this table as a reference when designing and analyzing your RF systems. For more on how to design an RF system using these objects, see:

The RF chain shown in both examples is identical and provides the same result on analysis.

See Also

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