KiCad boards from 3 GitHub repositories tagged “s-parameters”, the most starred first; open any of them in PCBKit.
potatobeanradio/circuitRF
Full featured RF circuit + electromagnetic simulator. DC, S-parameters, harmonic balance, loadpull, envelope. Also supports 2D and 3D layout and design and electromagnetic MoM, FEM, FDTD + thermal FEM.
Blaze-Pascal/EKA-PiF-MIFA
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.
gerhardmalberg/pcb-em-lab
Electromagnetic simulation for KiCad PCBs using Gmsh and Palace. Reproducible workflows for impedance, transmission lines and S-parameters. With CPU and CUDA support.
potatobeanradio/circuitRF
Full featured RF circuit + electromagnetic simulator. DC, S-parameters, harmonic balance, loadpull, envelope. Also supports 2D and 3D layout and design and electromagnetic MoM, FEM, FDTD + thermal FEM.
potatobeanradio/circuitRF
Full featured RF circuit + electromagnetic simulator. DC, S-parameters, harmonic balance, loadpull, envelope. Also supports 2D and 3D layout and design and electromagnetic MoM, FEM, FDTD + thermal FEM.