Open-Source 0.1–3 GHz Network Analyzer using ADALM Pluto SDR
Thank you to RTL-SDR.COM reader MAKA for writing in and sharing his project with us, an open-source 0.1 - 3 GHz network analyzer using an ADALM PlutoSDR and a $15 RF bridge. The system allows you to measure S21 (insertion loss/gain) and S11 (return loss) with real-time visual feedback. MAKA writes:
Key features include:
- FFT-based FIR filter for precise measurements
- Simple S21 and S11 calibration workflows (LOAD & OPEN)
- Real-time plots with smoothing and raw-data toggles
- Interactive markers for easy dB/frequency annotations
- Automatic export of calibration data to .xlsx for offline analysis
- Fully open-source
The complete open-source code for the project is available on GitHub at https://github.com/fromconcepttocircuit/pluto-network-analyzer
Over on his YouTube channel, MAKA has also uploaded a video demo and walkthrough.