Free for personal and commercial use · Windows 10/11 · macOS 12+
Matcha! is a desktop app for RF engineers that combines a VNA controller, matching-network synthesizer, and optimizer in one tool. Connect your Keysight or R&S VNA over TCP, load any Touchstone S-parameter file, and let Matcha find the best LC matching network for your design goals.
No Python installation required — the app bundles everything.
| Platform | Download |
|---|---|
| Windows 10 / 11 (64-bit) | ➡️ MatchaSetup.exe — installer with Start Menu shortcut |
| macOS 12+ (Apple Silicon & Intel) | ➡️ Matcha.dmg — drag Matcha.app to Applications |
See the Releases page for all versions and release notes.
- Live VNA sweep — connects to Keysight PNA/ENA and R&S ZNB/ZNA over
TCP (port 5025); imports
.s1p,.s2p,.s3p,.s4pTouchstone files - Matching network synthesis — automatically discovers topology and component values (L, C, series/shunt, 1–6 elements) that meet your S11/S22 targets across one or more frequency bands simultaneously
- Optimizer — fine-tunes an existing network's values with vendor component constraints and tolerance analysis
- Vendor component libraries — Murata LQP03HQ, LQW15AN, GJM03, GRM03, and more; synthesis and optimization snap to real catalog values and use measured S2P data including ESR, parasitics, and self-resonance
- Smith chart, VSWR, magnitude, phase, impedance, Q-factor plots
- Max achievable bandwidth — computes the Bode–Fano bound for N = 2 networks from the Q-factor plot
- Numba-accelerated SA engine — JIT-compiled simulated annealing with parallel tempering, frequency subsetting, and multi-start caching; 10–30× more iterations in the same wall time
- MatchaCLI — headless JSON command-line interface included in every installation for scripting and automation workflows
Windows: run Matcha.exe from the Start Menu or install directory.
macOS: open Matcha.app from your Applications folder.
Then:
- Load a Touchstone file with File → Open SNP, or connect a live VNA with VNA → Connect.
- Open Synthesis from the toolbar, set your frequency bands and S11 targets, pick a component count, and press Run.
- Results appear ranked by cost score; click any row to overlay the matching network on the plot.
A headless CLI is included in every installation. It accepts JSON requests and returns JSON results — useful for batch processing, CI pipelines, or integration with other tools.
Windows (MatchaCLI.exe):
MatchaCLI.exe evaluate request.json
MatchaCLI.exe optimize request.json -o result.json
MatchaCLI.exe synthesize spec.json -o result.json
macOS (matcha_cli):
./matcha_cli evaluate request.json
./matcha_cli optimize request.json -o result.json
./matcha_cli synthesize spec.json -o result.jsonA matcha_cli_examples/ folder with copy-paste JSON examples is included
alongside the executables on both platforms.
| Windows | macOS | |
|---|---|---|
| OS | Windows 10 or 11 (64-bit) | macOS 12 Monterey or later |
| CPU | x86-64 | Intel or Apple Silicon (via Rosetta 2) |
| RAM | 4 GB min, 8 GB recommended | 4 GB min, 8 GB recommended |
| Disk | ~250 MB | ~400 MB |
| VNA (optional) | Keysight PNA/ENA or R&S ZNB/ZNA over TCP port 5025 | same |
Matcha! is freeware.
- ✅ Free for personal and commercial use
- ✅ Free to redistribute the unmodified installer (with this license)
- ❌ Must not be sold or bundled in a paid product
- ❌ Must not be rebranded or distributed in modified form
See LICENSE for the full terms.
