BetaWiTwin Studio

The RF Digital Twin

Describe a scene to the Agent, run differentiable Maxwell, radar and channel solvers on it, and keep every Project an ordinary Python codebase.

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WiTwin Studio start screen with the six Project template cards and the Agent chat box

What you can build

Studio opens on these templates. Each one is a complete Project with its scene, scripts and tests.

Radar Sim

FMCW radar in a 3D scene: point clouds, range-Doppler maps and micro-Doppler.

Channel Sim

Ray-traced wireless channels: coverage maps, paths and channel impulse responses.

EM Design

Full-wave FDTD with Maxwell for RFIC and antenna layouts, with inverse design.

Home Simulation

A furnished room with people moving through it, ready for radar sensing.

Street Map

A city block built from OpenStreetMap data, for outdoor channel studies.

Empty Scene

Start from nothing and ask the Agent to build the scene for you.

Get started

Studio for the editor; the solvers are Python packages you can use on their own.

Studio

AI-native editor: build scenes by chat, run solvers, keep every Project a Python codebase

Download Installation guide

RayD

Differentiable GPU ray geometry primitives

pip install rayd

Docs GitHub

Maxwell

Differentiable full-wave electromagnetic solver

pip install witwin-maxwell

Docs GitHub

Radar

Differentiable mmWave radar simulator

pip install witwin-radar

Docs GitHub

Channel

Differentiable wireless channel and RF ray tracing

pip install witwin-channel

Docs GitHub

From a sentence to a solved Scene

One editor and one set of open solvers for electromagnetics, radar and wireless channels

Gradients for inverse design

End-to-end differentiable

Maxwell, Radar and Channel plug into PyTorch autograd, so a loss on the simulated field, radar return or channel flows back to geometry, materials and positions. Studio runs gradient, sweep, Monte Carlo, genetic, PSO and Bayesian Studies on the same Scene.

Learn more

Simulation as a differentiable layer

Physics inside your network

Solver outputs are torch tensors on the GPU. Put a simulator between two learned modules and train the whole model end to end, with the physics kept exact.

Learn more

Chat in Studio, script anywhere

Every Project is a Python codebase

The Agent edits the same files your scripts read. A Project installs with uv sync, and witwin.studio opens its Scenes, runs solvers and reads Results without the editor, so it fits in notebooks, CI and clusters.

Learn more

scripts/sweep.py

import witwin.studio as ws

# Open the Project folder Studio created

project = ws.open_project(".")

scene = project.scene()

# Run a Plugin solver and record a Result

run = project.solve("witwin.radar.simulate")

result = run.result()

Agent

Put a person walking in the living room and a 60 GHz MIMO radar on the wall.

Added 3 objects to the Scene and set the radar to 60 GHz.

tool scene.create Living room

tool scene.create Walking person

tool scene.create MIMO radar

Ready

Ask the Agent...

Developers

Xingyu Chen

Fourth Year PhD Student

UC San Diego

Founder and Developer

Prof. Xinyu Zhang

Professor, Director of Center of Wireless Communication

UC San Diego

Advisor

Citation

If you use RF Digital Twin in your research, please cite our paper

BibTeX

@inproceedings{chen2026rfdt,
  title     = {Physically Accurate Differentiable Inverse Rendering
               for Radio Frequency Digital Twin},
  author    = {Chen, Xingyu and Zhang, Xinyu and Zheng, Kai and
               Fang, Xinmin and Li, Tzu-Mao and Lu, Chris Xiaoxuan
               and Li, Zhengxiong},
  booktitle = {Proceedings of the 32nd Annual International Conference
               on Mobile Computing and Networking (MobiCom)},
  year      = {2026},
  doi       = {10.1145/3795866.3796686},
  publisher = {ACM},
  address   = {Austin, TX, USA},
}

Licensing

Research

Free

For academic and non-commercial research purposes

Full access to simulation capabilities
Academic publications allowed
Community support

Get Started

Commercial

For commercial and enterprise applications

Production deployment rights
Priority support
Custom integration assistance

Read the full license →