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Circuits designed by David Johnson, P.E.
Last Updated on: Friday, November 17, 2017 06:32 AM

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More  RF Sensors   Telephone Circuits   Wireless Telephones

2.45GHz RF Signal Detector


This passive RF indicator is made from a few simple parts.  A 100uA moving coil meter is used to display the relative intensity of the RF signal.  This circuit can be used with some cellphones and many cordless telephones.

Click on Drawing Below to view PDF version of Schematic

Circuit 2.45GHz RF Detector Circuits designed by David Johnson, P.E. (July 2, 2006)

More   RF Sensors   Telephone Circuits  
Wireless Telephones

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