Noise Modeling

Noise sources, phase noise, thermal noise, noise figure specification

Use noise sources to simulate white or colored noise in RF models and calculate the noise power. To calculate thermal noise, useS-Parametersblock.

Blocks

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Elements

Amplifier	Model amplifier in RF systems
Resistor	Model resistor for circuit envelope analysis
Mixer	Model mixer in RF systems
IMT Mixer	Model mixer using intermodulation table (IMT)
S-Parameters	Model S-parameter network

Testbenches

Noise Figure Testbench

Measures noise figure of system

Sources

Noise	Model noise using current or voltage noise source in RF systems
Continuous Wave	Model constant envelope source

Utilities

配置	Define system simulation settings

Topics

RF Noise and Nonlinearity Simulations
Learn how to simulate RF noise and nonlinearities through cross-product workflows.
Model System Noise Figure
RF receivers amplify signals and shift them to lower frequencies.
Design Receiver with ADC
Design RF Receiver using ADC.
Noise in RF Systems
Noise factor, noise figure, noise floor, thermal noise power, noise temperature, white noise, colored noise.

Featured Examples

RF Noise Modeling

Use the RF Blockset™ Circuit Envelope library to simulate noise and calculate noise power. Results are compared against theoretical calculations and a Communications Toolbox™ reference model.

Open Model

Model LO Phase Noise

Model and visualize LO phase noise. A mixer transfers local oscillator (LO) phase noise directly to its output.

Open Script

Spot Noise Data in Amplifiers and Effects on Measured Noise Figure

A test bench model to describe the noise introduced by a 2-port device.

Open Script

Explicitly Simulate Resistor Thermal Noise

Use theNoiseblock to calculate the classic thermal noise floor,kT, for a matched resistor circuit. Model configuration is as follows: Time step of the model is 1e-6 and frequency is 2 GHz.

Open Script

Measurement of Gain and Noise Figure Spectrum

Use RF Blockset to measure the Gain and Noise Figure of an RF system over a given spectral range.

Open Script