RF Budget Analysis

Calculate power, gain, noise, and intermodulation budget for RF cascade elements

You can perform budget analysis of RF networks using the RF Budget Analyzer app or an rfbudget object. You can subsequently perform full circuit envelope or time domain simulation using an rfsystem System object™.

Apps

RF Budget Analyzer

Analyze gain, noise figure, IP2, and IP3 of cascaded RF elements and export to RF Blockset

Objects

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RF Budget and System

`rfbudget`	Create RF budget object and compute RF budget results for chain of 2-port elements
`rfsystem`	Generate RF Blockset model and perform circuit envelope or idealized baseband simulation

Linear Elements

`attenuator`	Create two-port attenuator element
`rfantenna`	Create antenna element modeled as transmitter, receiver, or transmit-receive
`rffilter`	Create Butterworth, Chebyshev, and inverse Chebyshev RF filter
`nport`	Create linear n-port circuit element
`seriesRLC`	Create two-port series RLC circuit
`shuntRLC`	Create two-port shunt RLC circuit
`phaseshift`	Create phase-shift circuit (Since R2021b)
`mutualInductor`	Create mutual inductor element (Since R2023a)
`txlineCoaxial`	Create coaxial transmission line
`txlineCPW`	Create coplanar waveguide transmission line
`txlineMicrostrip`	Create microstrip transmission line
`txlineParallelPlate`	Create parallel-plate transmission line
`txlineLumped`	Create lumped transmission line (Since R2023a)
`txlineRLCGLine`	Create RLCG transmission line
`txlineTwoWire`	Create two-wire transmission line
`txlineStripline`	Create stripline transmission line element (Since R2022a)
`txlineEquationBased`	Create equation-based transmission line
`txlineDelayLossless`	Create delay lossless transmission line
`txlineDelayLossy`	Create delay lossy transmission line
`txlineElectricalLength`	Create electrical-length-based transmission line (Since R2021b)

Nonlinear Elements

`amplifier`	Create two-port amplifier element
`modulator`	Modulator object
`rfelement`	Generic RF element object
`mixerIMT`	Create IMT mixer element (Since R2022a)

Functions

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RF Budget

Visualize

`show`	Display RF budget object in RF Budget Analyzer app
`rfplot`	Plot cumulative RF budget result vs. cascade input frequency and amplifier power characteristics
`smithplot`	Plot measurement data on Smith chart
`polar`	Plot specified object parameters on polar coordinates

Compute

`computeBudget`	Compute results of RF budget object
`computeAMPMTable`	Compute AM/AM-AM/PM table representation from RF budget object (Since R2024b)

Export

`exportRFBlockset`	Export RF budget object to RF Blockset Model
`exportScript`	Export MATLAB code that generates RF budget object
`exportTestbench`	Export RF budget object to RF Blockset measurement testbench model
`exportTransmitter`	Export RF budget summary to create phased transmitter (Since R2024b)
`exportReceiver`	Export RF budget summary to create phased receiver (Since R2024b)

RF System

`open_system`	Open RF Blockset model created using `rfsystem`
`save_system`	Save RF Blockset model created using `rfsystem`
`close_system`	Close RF Blockset model window created using `rfsystem`
`hide_system`	Hide RF Blockset model window created using `rfsystem`
`load_system`	Load RF Blockset model to memory (Since R2022a)

Topics

Determine Linear and Nonlinear Characteristics of RF Chain
Determine linear and nonlinear characteristics of RF chain using RF budget analysis.
RF circuit or rfbudget vs. rfckt Objects
Determine when to use RF circuit, rfbudget, and rfckt objects in your RF analysis workflow.
Circuit Envelope Simulation at MATLAB Command Line
Perform circuit envelope simulation at the MATLAB command line.