Antminer ctrl board SDR transceiver hardware quick start guide v0.9
Assemble guide
Assemble guide
Not perfect but acceptable. Too much solder, it doesn’t look cool, but does not interfere with work 🙂
BPF: LPF:
Frequency response: SFDR: https://github.com/enthru/Arduino-AD9851-DDS-Direct-Digital-synthesizer-Signal-Generator
https://github.com/enthru/Arduino-AD9851-DDS-Direct-Digital-synthesizer-Signal-Generator
2 ADCs (only one with LNA), 4 layers board, not tested yet: https://oshwlab.com/neuroworker/redqmtechadc