smith-chart

Xnec2c is a high-performance multi-threaded electromagnetic simulation package to model antenna near- and far-field radiation patterns for Linux and UNIX operating systems.

Fast, interactive Julia/GTK+ plots (+Smith charts +Gtk widget +Cairo-only images)

NanoVNA RF learning board with SMA connectors for practical demos, experiments, and teaching.

Parametric analysis/visualization of model/measurement/simulation results

RF matching network synthesizer, optimizer, and S-parameter analyzer with live VNA control

This is a collection of open source, free to use and/or abandonware tools for Amateur radio.

CAD tool for designing RF and microwave circuits.

Smith Chart

GTK4 Drawing Area widget displaying a detailed Smith chart

Design and analytical synthesis of a 15 GHz Ku-band microwave low-noise amplifier based on the ATF-26884 GaAs pHEMT transistor and Rogers RO4350B substrate. Features Mathcad matching derivations, CST 3D electromagnetic simulations, and Altium Designer PCB layouts.

Graphical Impedance Matching and Smith Chart - cloned from floppy drive source

Designing Amplifier based on S-parameters

A quick start project that shows how to create and configure the Syncfusion Vue Smith Chart component in a Vue application. This sample explains how to populate list data, add legends, and enable data labels and tooltips.

Local antenna and RF plotting app for HFSS, CST, ADS and VNA data, with S-parameters, radiation patterns, Smith charts and publication-ready exports.

Offline VS Code preview and comparison for Touchstone S2P files with Smith charts and dB plots.

2.4 GHz MIFA trace antenna design and simulation. Modeled using Ansys HFSS with Optimetrics sweeps to optimize geometry. Implemented on a custom 2-layer KiCad PCB using a coplanar waveguide. Includes LiteVNA verification diagnostics and a calculated Pi impedance matching network.

A quick start Blazor server project that let you know how to create and configure the Syncfusion Blazor Smith Chart using Visual Studio 2019.

Interactive Smith chart learning app with Touchstone analysis, impedance matching, and linked RF plots.

Python wrappers for RF lab instruments — Mini-Circuits USB power sensors and Agilent E5061B ENA — with FastAPI servers for n8n and a live Smith chart viewer.