Sr Smith: A Web-Based RF Smith Chart App using JSXGraph and JessieCode
Sebastian Tabares Amaya
2 Tian Jin Li Gong Da Xue Qing Nian Jiao Shi He Xue Zhe Gong Yu, Xi Qing Qu, Tian Jin Shi, China, 300387
Abstract
Sr Smith is a powerful web application that reinvents the classic Smith Chart for the digital age. Built with the high-performance JSXGraph library and the intuitive JessieCode DSL, it provides RF engineers, professors and students with an interactive platform for circuit analysis and design, with a graphical experience similar to GeoGebra.
This app allows you to visualize and design complex RF circuits in a dynamic environment. You can plot and see circuit transformations in real time, making it easy to analyze impedance matching networks, S-parameters, RF amplifiers, transmission lines, and other great RF applications and modern use of the Smith Chart. This goes beyond static old-school diagrams, giving you a live and colorful, visual understanding of your designs.
Here’s the cool part: Sr Smith uses JessieCode. With this simple yet powerful language, the app lets you turn your graphical designs into a repeatable, parametric workflow. You can easily tweak a value in the code or in the canvas, and watch your entire design update instantly. It’s the best of both worlds? The visual ease of a graphical chart with the power and precision of code. Unlike traditional Smith Chart software that relies on fixed components like capacitors and inductors, the core principle of Sr Smith is purely geometrical. This app is built on a foundation of fundamental primitives like points, lines, circles and curves. This has two advantages: You’re no longer limited by predefined component libraries. You can create any graphical construction on the complex plane, both visually and through code, allowing you to explore design possibilities that are impossible with other tools. And by focusing on the geometric nature of the Smith Chart, Sr Smith promotes a deeper learning experience. It helps users truly grasp the visual and conceptual representations of RF principles, which is the entire point of using a graphical tool like the Smith Chart in the first place. Essentially, Sr Smith treats the Smith Chart as a dynamic canvas for geometric exploration, giving you unmatched freedom and a clearer understanding of your designs. it isn’t just a calculator; it’s a complete design tool that bridges the gap between traditional graphical methods and modern, code-driven engineering.