s-parameters

Python interface to OpenEMS, for PCB trace simulation. Accepts Gerber files as input. Features automatic grid generation and postprocessing.

Python tools for signal integrity applications

S + Autograd + XLA :: S-parameter based frequency domain circuit simulations and optimizations using JAX.

Frequency domain, multi-tone harmonic balance, simulation of scattering parameters and noise in nonlinear circuits containing Josephson junctions. Scattering parameter conversion and interconnection.

Lightweight cross-platform RF circuit simulator — DC, S-parameters, harmonic balance, loadpull. Not a SPICE simulator.

NanoVNA‑X is a refined firmware for NanoVNA‑H/H4, introducing an event‑driven architecture, improved sweep stability, UI polish, per‑unit USB identifiers, and integrated SD features for reliable field operation.​

FDTD 3D simulator that generates s-parameters from OFF geometry files using one or more GPUs

Full-wave 3D electromagnetic field simulation in Python

CAD tool for designing RF and microwave circuits.

PyVNA: Multi-protocol Python library for NanoVNA V1/V2/LiteVNA, derived from GoVNA for high performance & secure server-side applications. Supports auto-detection, robust device pooling, and comprehensive data handling.

A Circuit-Level Open-Source Based RFIC AI-Assisted Optimizer

CAD tool for designing RF and microwave circuits

RF Toolbox for TI-Nspire Calculators

3D finite-element electromagnetics (FEM) solver for RF/mmWave simulation. Computes S-parameters, radiation patterns, and fields using Nédélec edge elements. Supports wave ports, PML/ABC boundaries, periodic structures, and dispersive materials.

Qucs-S S-parameter and RF Circuit Synthesis Tool

Browser-based Nevanlinna-Pick solver: manifold-coupled multiplexer synthesis (Martinez 2019) and broadband impedance matching, running entirely in WebAssembly.

2.4 GHz power amplifier design project featuring analytical matching network calculations in Mathcad, PCB layout in Altium Designer, CAD component integration, and full-wave 3D electromagnetic simulation in CST Studio Suite.

Utility to transform, cascade, de-embed and describe s-parameter touchstone files

OPICS : An S-parameter based photonic circuit simulator

Design, analytical calculation, and 3D electromagnetic simulation of an H10 (TE10) rectangular waveguide section operating at 4.2 GHz (C-band). Includes Mathcad worksheets, SolidWorks CAD/STEP models, CST Studio Suite simulation project, and full technical documentation.