An open-source 240-antenna array to bounce signals off the Moon

Overview

A 4-antenna SDR tile designed for arraying.
Useful as a standalone SDR or as a building block for larger phased arrays.

The QuadRF will be available soon!
See updates.

Key features

• Frequency: 4.9–6.0 GHz (C-band), full duplex
• Per-antenna bandwidth: 40 MHz; 8+8-bit I/Q
• Tx power: 1 W per antenna • Rx NF: ~1.2 dB
• Polarization: RHCP (Tx), LHCP (Rx)
• MEMS TCXO • Jitter ~1.4 ps
• FPGA: Lattice ECP5 • Latency < 1 ms
• Power: 12 V DC (≈25 W peak)

Standalone applications

• General-purpose 4×4 MIMO Software-defined Radio
• Fox-hunting, direction of arrival (DOA), RF exploration
• Open Wi-Fi router, Open 4G/5G base station
• Drone HD links, robotics communications