RF View

Know what the numbers mean before you design

Tutorials and tools for RF engineers, with a plain-language layer for students.

Start with a tutorialOpen the tools
−3 dBfc−18 dB at 2·fc0dBf / fc
A concept drawing of a 3rd-order low-pass filter, not measured data.

Tutorials

Expert detail first, then a plain-language version.

How to Open an S2P (Touchstone) File: 6 Ways and a Free ViewerAn S2P file is a plain-text Touchstone file holding the two-port S-parameters of a device at many frequencies. You can plot it right here in your browser (the file never leaves your computer), read it in a text editor, or open it in RF View, Python, MATLAB or a spreadsheet.Tutorial, updated 2026-10-13All tutorials

Tools

Formulas and limits shown.

Attenuator padsdBm converterL-network matchingMicrostrip impedanceS2P viewerVSWR and return lossAll calculators
RF View app: plot, simulate and batch-check S-parameters. Free for Windows and Android.Get the app