Visualization and Data Export

Visualize RF data using Smith charts, polar, and Cartesian plots; save Touchstone files

You can use RF Toolbox™ functions to visualize component or network behavior:

Smith^® Chart
Rectangular plots
Polar plots

The RF domain uses many types of data files, including industry-standard Touchstone files (.s2p) and AMP files, a MathWorks^® nonlinear file format. You can write data into these files using several different RF Toolbox functions.

You can also export a network to Verilog-A format for use as a test environment in an analog circuit simulator. See Export Verilog-A Model.

Note

RF Toolbox does not support Touchstone 2.0 files.

Functions

expand all

Visualization

`rfplot`	Plot S-parameter data
`setrfplot`	Set axis type for `rfplot` in RF Toolbox
`smithplot`	Plot measurement data on Smith chart
`circle`	Draw circles on Smith Chart
`smith`	Plot circuit object parameters on Smith chart
`polar`	Plot specified object parameters on polar coordinates
`loglog`	Plot specified circuit object parameters using log-log scale
`plot`	Plot circuit object parameters on X-Y plane
`plotyy`	Plot parameters of RF circuit or RF data on X-Y plane with two Y-axes
`semilogx`	Plot RF circuit object parameters using log scale for x-axis
`semilogy`	Plot RF circuit object parameters using log scale for y-axis
`report`	Summarize IF planning results in command window
`OpenIF`	Find open intermediate frequencies (IFs) in multiband transmitter or receiver architecture
`rfchain`	Create `rfchain` object

Data Export

`rfwrite`	Write RF network data to Touchstone^® file
`writeva`	Generate Verilog-A description of `rational` object
`write`	Write RF data from circuit or data object to file

Topics

Model RF Objects Using Verilog-A
Learn to model RF objects using Verilog-A.
Analyze and Plot RF Components
Learn to use RF Toolbox functions to analyze RF components in frequency-domain and to compute and plot time-domain response.
Export Component Data to File
Learn to export RF object data to industry-standard data files and MathWorks AMP files.
Export Verilog-A Model
Learn to export Verilog-A description of an RF component using a rational function model.

Featured Examples

Visualize Mixer Spurs

Create an rfckt.mixer object and plot the mixer spurs of that object.

Open Live Script

Finding Free IF Bandwidths

Select an Intermediate Frequency (IF) that is free from any intermodulation distortion. First, you create an OpenIF object and specify whether you are designing a transmitter or receiver. Second, you use the addMixer function to define the properties of each mixer as well as the specific Radio Frequency (RF) it interacts with. Lastly, you view the results using the functions report and show.

Open Live Script

Write S2P Touchstone Files

Write the data in a circuit object created in the MATLAB® workspace into an industry-standard data file, Touchstone®. You can use these files in third-party tools.

Open Live Script