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

expand all

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 (Since R2021a)

Linear Elements

`attenuator`	Create two-port attenuator element (Since R2021a)
`rfantenna`	Create antenna element modeled as transmitter, receiver, or transmit-receive (Since R2021a)
`rffilter`	Create Butterworth, Chebyshev, and inverse Chebyshev RF filter
`nport`	Create linear n-port circuit element
`seriesRLC`	Create two-port series RLC circuit (Since R2021a)
`shuntRLC`	Create two-port shunt RLC circuit (Since R2021a)
`phaseshift`	Create phase-shift circuit (Since R2021b)
`mutualInductor`	Create mutual inductor element (Since R2023a)

`txlineCoaxial`	Create coaxial transmission line (Since R2020b)
`txlineCPW`	Create coplanar waveguide transmission line (Since R2020b)
`txlineMicrostrip`	Create microstrip transmission line (Since R2020b)
`txlineParallelPlate`	Create parallel-plate transmission line (Since R2020b)
`txlineLumped`	Create lumped transmission line (Since R2023a)
`txlineRLCGLine`	Create RLCG line transmission line (Since R2020b)
`txlineTwoWire`	Create two-wire transmission line (Since R2020b)
`txlineStripline`	Create stripline transmission line element (Since R2022a)
`txlineEquationBased`	Create equation-based transmission line (Since R2021a)
`txlineDelayLossless`	Create delay lossless transmission line (Since R2021a)
`txlineDelayLossy`	Create delay lossy transmission line (Since R2021a)
`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

`show`	Display RF budget object in RF Budget Analyzer app
`computeBudget`	Compute results of RF budget object
`exportScript`	Export MATLAB code that generates RF budget object
`exportRFBlockset`	Export RF budget object to RF Blockset Model
`exportTestbench`	Export RF budget object to RF Blockset measurement testbench model
`rfplot`	Plot cumulative RF budget result vs. cascade input frequency and amplifier power characteristics
`smithplot`	Plot measurement data on a Smith chart
`polar`	Plot specified object parameters on polar coordinates

Topics

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.

Related Information

Design and Simulate RF Transceivers for Wireless Systems

Featured Examples

RF Budget Harmonic Balance Analysis of Low-IF Receiver, IP2 and NF

Use the rfbudget object's harmonic balance solver to analyze a low-IF (intermediate frequency) receiver RF budget for second-order intercept point (IP2), the second-order intercept point and to compute a more accurate noise figure (NF) that correctly accounts for system nonlinearity and noise-folding.

Open Live Script

Superheterodyne Receiver Using RF Budget Analyzer App

Build a superheterodyne receiver and analyze the receiver's RF budget for gain, noise figure, and IP3 using the RF Budget Analyzer app. The receiver is a part of a transmitter-receiver system described in the IEEE conference papers, [1] and [2].

Open Live Script

Visualizing RF Budget Analysis over Bandwidth

Programmatically perform an RF budget analysis of an RF receiver system and visualize the computed budget results across the bandwidth of the input signal.

Open Live Script

Frequency Sweep in RF Budget Analysis

Sweep through frequency-dependent properties of the elements in an RF Budget Analysis.

Open Live Script

Design RF Chain Using RF Antenna Object

Design an RF chain using an rfantenna object.

Open Live Script