Nonlinear Modeling
R2026bUse these blocks to specify the nonlinear behavior of amplifiers and mixers. Such behavior includes IP2/IP3, intermodulation distortion and 1-dB compression. You can also simulate frequency-dependent mismatches between components.
Blocks
 | Amplifier | Model amplifier in RF systems |
 | Mixer | Model mixer in RF systems |
 | IMT Mixer | Model mixer using intermodulation table (IMT) |
 | Power Amplifier | Model power amplifier with memory |
 | VGA | Model variable gain amplifier |
 | OIP3 Testbench | Measure output third intercept point of system |
 | IIP3 Testbench | Measure input third intercept point of system |
 | OIP2 Testbench | Measure output second intercept point of system |
 | IIP2 Testbench | Measure input second intercept point of system |
 | IQ Demodulator | Convert RF signal to baseband signal |
 | IQ Modulator | Convert baseband signal to RF signal |
 | Modulator | Model RF to RF modulator |
 | Demodulator | Model RF to RF demodulator |
Topics
- Carrier to Interference Performance of Weaver Receiver
A classic superheterodyne architecture filters images prior to frequency conversion.
- RF Noise and Nonlinearity Simulations
Simulate RF noise and nonlinearities.
- Measuring Image Rejection Ratio in Receivers
Calculate the image rejection ratio for high-side-injection in Weaver and Hartley receivers.
Related Information
Featured Examples
Power Amplifier Characterization
Characterize a power amplifier (PA) using measured input and output signals of an NXP Airfast PA. Optionally, you can use a hardware test setup including an NI PXI chassis with a vector signal transceiver (VST) to measure the signals at run time.
Power Amplifier and DPD Modeling for Dynamic EVM Measurement
Extract a PA model using measured data, verify the quality of the fitting, and simulate the PA model with and without DPD.
Digital Predistortion to Compensate for Power Amplifier Nonlinearities
Use digital predistortion in a transmitter to offset the effects of nonlinearities in a power amplifier.
Validating IP2/IP3 Using Complex Signals
Run a two-tone experiment to measure the second- and third-order intercept points of an amplifier.
Two-Tone Envelope Analysis Using Real Signals
Test intermodulation distortion of an amplifier using two-carrier envelope analysis.
