DIY Rpi Triple Axis RF / EMF Detector using AD8362 / AD8361

Question

I have a 3 axis rf meter. This one. I wanted to see if I could make it with a rasp pi instead.

I found this article using the AD8361 but it doesn't go up to 3.5ghz and its not 3 axis. Ideally I would like it to go higher.

The main features I need to build are;

-RF range: 38mV to 20V/M -Frequency range: 50MHz to 3.5GHz. -Sensors:Triple Axis (X,Y,Z)

The first two I believe I can get with AD8362, I have no idea how to get the 3 axis?

I believe I can just record the data and get the required features;

-Manual data memory (Max & AVG) records -Calibration factor, Alarm and Clock settings

Can someone point me in the right direction? Is this even reasonable?

Answer 1

Question

How to DIY a Rpi based Triple Axis RF Detector using AD8362?

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Answer

(1) Using 3 AD8362s

You can use 3 AD8362s (in X, Y, Z direction) and 3 ADCs, eg, MCP3008 (or ADS1015) x 3 for Rpi. Analog Devices is hacker friendly to give the PCB layout and BOM.

(2) Using 1 AD8362

You can use 2 little servos, TowerPro SG90 eg, to sequentially position to X, Y, Z axis and take reading.

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References

(1) AD8362 50 Hz to 3.8 GHz 65 dB TruPwr Detector Data Sheet - Analog Devices

(2) AD8361 LF to 2.5 GHz TruPwr Detector Data Sheet - Analog Devices

(3) How Can I read data from AD8361 RF Detector - Asked 2020mar15, Viewed 38 times

(4) Amazon Latnex HF-B3G Triple Axis HF RF Power Meter Analyzer and Detector Measuring EMF Radiation-Cell Phones-Smart Meters-Cell Towers-WiFi-Microwave-Blouetooth-Calibrated-Used for EMF Home Inspections

(5) AD8362 Documentation (Datasheet, Application Notes, Evaluation Board)

(6) AD8362 Eval Board Gerber File

(7) ADP7102 20V, 300mA, Low Noise, CMOS LDO Data Sheet - Analog Devices

(8) AliEXpress Panoramic Servo Mount Platform Anti-Vibration for SG90 - US$0.5

(9) Mono-axial and tri-axial (isotropic) probe / EMF measurement - Wikipedia

(10) AliExpress AD8362 Catalog

(11) AliExpress AD8362 RF module RMS power detector - US$22

(12) AliExpress 10 pieces AD8362 - US$7.8/10 units

(13) Best EMF Meters Reviewed - GeoEmf 2020

(14) EMF Protection Devices – Do They Work? - GeoEmf 2020

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Appendices

Appendix A - AD8362 Summary

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Appendix B - AD8362 Evaluation Board Design Notes

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Appendix C - SG90 Servo Mount

AliEXpress Panoramic Servo Mount Platform Anti-Vibration for SG90 - US$0.5

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Appendix D - AD8362 RF module RMS power detector product datasheet summary

(11) AliExpress AD8362 RF module RMS power detector - US$22

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End of Answer