In this video I'll walk you through a complete example of how to build your own low cost two channel digital beamformer. At the end, we'll use it to track a 2.3 GHz RF signal and display its direction of arrival.
You can follow my blog series on this topic here:
https://ez.analog.com/tags/DIYRadio
The python files used in this video are found here:
https://github.com/jonkraft/Pluto_Beamformer
To build this yourself, you'll need:
ADALM-PLUTO, rev C: https://www.digikey.com/short/8q0t4hf2
Crystek CLPFL-2400 Filters: https://www.digikey.com/short/ht1q39zp
Antennas: https://a.co/d/hMSP3xR
Stand: https://a.co/d/6VuwgZ8
SMA cables
Technical Support Questions on any product from Analog Devices should go here:
https://ez.analog.com/adieducation/university-program/
Other links used in this video:
Pluto Dual Channel Modifications: https://youtu.be/ph0Kv4SgSuI
Phased Array Beamforming: Understanding and Prototyping: https://youtu.be/0hnWfTvETcU
Rapid Phased Array prototyping with Analog Devices and X-Microwave: https://youtu.be/B_icccUpxV0
Chapters:
0:00 Introduction
0:51 Agenda
1:56 Disclaimer!
2:58 Brief Overview of Beamforming Concept
4:11 Analog vs Digital Beamforming
6:21 Build our Beamformer
12:51 Calculate Expected Results
15:27 Program Beamformer in Python
19:46 FFT Plots of the Phase Shifted Signal
22:49 Array Factor Plots
26:48 Improve Setup
29:07 Direction of Arrival Compass
30:03 What's Next?