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RF Analysis

Reflection coefficients, de-embedding, transfer functions, rational function fitting, VSWR, stability factors, passivity

RF Toolbox™ functions enable you to calculate input and output reflection coefficients, compute stability factors, de-embed S-parameters and perform other RF analysis tasks. You can also perform noise figure calculations and find third-order intercept points for cascaded networks.

To compute transfer functions and fit the transfer function to closed form, use rationalfit. Then use this result to model single-ended and differential high-speed transmission lines.

You can also perform budget analysis of RF networks using RF Budget Analyzer.


RF Budget AnalyzerAnalyze gain, noise figure, and IP3 of cascaded RF elements and export to RF Blockset


rfbudgetCreate RF budget object and compute RF budget results
rfmodel.rationalStore output power and phase information for amplifiers or mixers
OpenIFFind open intermediate frequencies (IFs) in multiband transmitter or receiver architecture


gamma2zConvert reflection coefficient to impedance
gammainInput reflection coefficient of 2-port network
gammamlLoad reflection coefficient of 2-port network
gammaoutOutput reflection coefficient of 2-port network
gammamsSource reflection coefficient of 2-port network
z2gammaConvert impedance to reflection coefficient
sparametersS-parameter object
deembedsparamsDe-embed 2N-port S-parameters
s2tfConvert S-parameters of 2-port network to voltage or power-wave transfer function
powergainPower gain of 2-port network
rationalfitApproximate data using stable rational function object
freqrespFrequency response of rational function object
impulseImpulse response for rational function object
steprespStep-signal response of rational function object
timerespTime response for rational function object
vswrVSWR at given reflection coefficient Γ
groupdelayGroup delay of s-parameter object or RF filter object or RF Toolbox circuit object
stabilitykStability factor K of 2-port network
stabilitymuStability factor μ of 2-port network
ispassiveCheck passivity of N-port S-parameters
makepassiveMake N-port S-parameters passive
rfmodel.rational.ispassiveCheck passivity of scalar rational function object
analyzeAnalyze circuit object in frequency domain
rfinterp1Interpolate network parameter data at new frequencies
calculateCalculate specified parameters for circuit object
extractExtract array of network parameters from data object
rftoolOpen RF Analysis Tool (RF Tool)


Model RF Objects Using Verilog-A

Describes Verilog-A, the type of model you can export, and what you can do with the exported model.

Analyze Circuits

Describes setting parameters for circuit analysis and perform the analysis.

Featured Examples