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`	Perform circuit envelope simulation of RF system designed using `rfbudget`

Linear Elements

`attenuator`	Create two-port attenuator element
`rfantenna`	Create antenna element modeled as transmitter, receiver, or transmit-receive
`rffilter`	Create RF filter object
`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
`txlineCoaxial`	Create coaxial transmission line
`txlineCPW`	Create coplanar waveguide transmission line
`txlineMicrostrip`	Create microstrip transmission line
`txlineParallelPlate`	Create parallel-plate transmission line
`txlineRLCGLine`	Create RLCG line transmission line
`txlineStripline`	Create stripline transmission line element
`txlineTwoWire`	Create two-wire transmission line
`txlineEquationBased`	Create equation-based transmission line
`txlineDelayLossless`	Create delay lossless transmission line
`txlineDelayLossy`	Create delay lossy transmission line

Nonlinear Elements

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

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`	Create RF Blockset model from RF budget object
`exportTestbench`	Create measurement testbench from RF budget object
`rfplot`	Plot cumulative RF budget result versus cascade input frequency
`smithplot`	Plot impedance transformation for selected matching network on 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.

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].

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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.

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Frequency Sweep in RF Budget Analysis

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

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Design RF Chain Using RF Antenna Object

Design an RF chain using an rfantenna object.

Open Live Script