RF Toolbox and RF Blockset

RF Toolbox and RF Blockset

Design, analyze, and simulate RF systems in MATLAB -- from measured S-parameter data through full time-domain Circuit Envelope simulation. One unified workflow covering passive networks, active device characterization, system cascade budgets, and behavioral time-domain modeling.

When to Use

Measured data workflows

• Loading Touchstone files (.s1p through .snp), validating quality (passivity, causality, IEEE P370)
• Plotting on Smith charts and rectangular plots, interpolating, re-referencing impedance
• Converting between S, Z, Y, ABCD, T, H, G parameters; computing mixed-mode differential
• Cascading and de-embedding S-parameter networks; fixture removal

System design and analysis

• Building RF signal chains from behavioral elements (amplifier, modulator, rffilter, nport, etc.)
• Computing cascaded gain, noise figure, IP3, SNR, output power with rfbudget
• Comparing Friis vs Harmonic Balance solver accuracy
• Exporting to RF Blockset Simulink models, Communications Toolbox, or MATLAB scripts

Circuit-level design

• Composing arbitrary RF circuits with node wiring (SPICE-like netlist)
• Designing impedance matching networks (L, Pi, Tee topologies, Richards stubs)
• Analyzing amplifier stability (K-factor, mu), power gain, and matching conditions
• Mixer intermodulation analysis and spur-free IF frequency planning

Time-domain and signal integrity

• Fitting S-parameters to rational models; computing TDR, impulse, step responses
• Exporting broadband circuit models to SPICE or Verilog-A
• Building SI channel models from nport blocks, lossy transmission lines, and parasitics
• Processing complex baseband signals through rf.Amplifier, rf.Mixer, rf.Filter System Objects
• Full Circuit Envelope time-domain simulation via rfsystem (no Simulink knowledge required)

When NOT to Use

• Antenna design and radiation patterns -- use Antenna Toolbox
• RF propagation modeling (path loss, fading, ray tracing) -- use Communications Toolbox or Phased Array System Toolbox
• SerDes/high-speed serial link equalization (FFE, CTLE, DFE, IBIS-AMI) -- use SerDes Toolbox
• Radar waveform design or phased arrays -- use Phased Array System Toolbox