JITX

JITX is a software defined electronics platform for high frequency boards, built around Python based design. Requirements, stackups, SI targets, and manufacturing rules become Python design code that the team can inspect and compile. An approved AI writes and revises that code while JITX generates schematics, board structures, and routing, dispatches HFSS simulations, and runs checks.

JITX runs on the customer local computer and on their infrastructure with their approved AI. Stackups, material effects, vias, clearances, and proprietary tradecraft stay encoded in the local design files while JITX supplies the design primitives, routing solvers, HFSS interface, schematic generation, pin assignment, fencing, and stabilization that the AI cannot build on its own.

The HFSS in the loop workflow sets up ports, sweeps, boundaries, and metrics from requirements, then feeds the results back into the next code edit. The homepage example optimizes a 56 GHz Nyquist PCIe Gen7 BGA launch and deskew to minus 30 dB return loss and minus 40 dB common to differential mode conversion, in 5 total HFSS simulations. The general loop expands to other domains, including SPICE, power, and thermal.