SimRF

Defining RF Components

SimRF lets you represent RF amplifiers, mixers, impedances, transmission lines, and filters by specifying physical properties. For amplifiers and mixers, you can specify linear and nonlinear properties such as component gain, noise figure, IP2 and IP3, 1dB compression point, and saturation power. You can also specify linear networks by importing S-parameter data files directly into SimRF models. You can simulate frequency-dependent mismatches between linear and nonlinear components in the time and frequency domains. You can author your own RF models using the Simscape language.

Circuit envelope model of a low-IF Hartley receiver with an interface for setting amplifier parameters and a visualization of the S-parameters of the receiver SAW filter.
Circuit envelope model of a low-IF Hartley receiver (top) with an interface for setting parameters of the amplifier (bottom left) and a visualization of the S-parameters of the receiver SAW filter (bottom right).

SimRF blocks are defined by linear and nonlinear specifications, noise figure, and industry-standard Touchstone data files. For time-domain simulation, SimRF applies a general rational function model to the measured S-parameters. The S-Parameters block lets you plot the data and the result of the rational fitting.

Next: Designing RF Subsystems

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Design and Verify RF Transceivers for Wireless Communication

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