Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 26,000+ electronic circuits or schematics carefully
cross-referenced into 500+ categories.   As a vital resource for engineers,
hobbyists, inventors & consultants, the site's collection of information
will help you find quick solutions to electronic design problems.

 

Web www.discovercircuits.com

HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Book Corner Contact Info

Sensors / Detectors: RF (Radio Frequency) Detectors, Page 1
Last Updated on: Monday, April 28, 2008 03:04 PM

Sensors / Detectors -- Main Page

RF Detectors:   #'s - B    C - O    P - R     S- Z
Circuits Designed by Dave Johnson, P.E.:
  • 2.45GHz RF Signal Detector
    This passive RF indicator hobby circuit is made from a few simple parts.  A bent piece of wire forms a 2.5GHz antenna.  A 100uA moving coil meter is used to display the relative intensity of the RF signal.  Two microwave rated detector diodes form a simple voltage doubler circuit, which feeds a DC voltage to the meter movement, proportional to the RF field strength.  This circuit can be used with some cell phones and many cordless telephones.  It can also detect RF leaking from a microwave oven.  
 
 
Links to electronic circuits, schematics, or diagrams for engineers, hobbyists, students & inventors:

2 Watt Switching Power Supply:  from 6V to14V (added 3/06)

300 MHz AM RF Remote Control System:  (electronic design added 9/02)

300MHz to 3GHz RF Power Detector in SC70 Package:  Linear Technology LTC5532 (app note added 02/05)

300MHz to 7GHz RF Power Detector with Buffered Output in SC70 Package:  Linear Technology LTC5508 (app note added 02/05)

50MHz to 3GHz RF Power Detector with 60dBDynamic Range:  Linear Technology LTC5535 (app note added 02/05)

600MHz to 7GHx Precision RF Detector with Fast Comparator Output:  Linear Technology LTC5536 (app note added 02/05)

8 Hints for Making Better Measurements Using Analog RF Signal Generators:  Agilent Application Note   (app note added 3/06)

8 Hints for Making Better RF Counter Measurements (5967-6038e):  Aligent Application Note  (added 3/06)

8 Hints for Making Better RF Counter Measurements:  Agilent Application Note   (added 3/06)

AN-1374: Use of LMV225 Linear-In-dB RF Power Detector in CDMA2000 1X and EV_DO Mobile Station and Access Terminal:  National Semiconductor Application Note   (app note added 2/06)

AN-1375: Linear-In-dB RF Power Detector in W-CDMA User Equipment:  National Semiconductor Application Note   (app note added 2/06)

AN-1433: Base Station Closed-Loop RF Power Control with LMV232 Crest-Factor Invariant Detector:  National Semiconductor Application Note   (app note added 2/06)

AN-1434: Crest Factor Invariant RF Power Detector:  National Semiconductor Application Note   (app note added 2/06)

AN-653: Improving Temperature, Stability, and Linearity of High Dynamic Range RMS RF Power Detectors:  AN-653 Analog Devices Application Notes  (app note added 3/06)

AN-691: Operation of RF Detector Products at Low Frequency:  AN-691 Analog Devices Application Notes  (app note added 6/06)

AN-888: RFI Suppression Techniques in DP83950A (RIC) Based Systems:  National Semiconductor Application Note   (app note added 3/06)

AN912: Designing LF Talkback for a Magnetic Base Station:  Microchip Application Note Published 5-Mar-04   (app note added 2/06)

Base Station Closed-Loop RF Power Control with LMV232 Crest-Factor Invariant Detector:  National Semiconductor Application Note   (app note added 2/06)

RF Detectors:   #'s - B    C - O    P - R     S- Z

Copyright  2002 - 2008 David A. Johnson & Associates.  All Rights Reserved to the contents & graphics of Discovercircuits.com
Linking is welcomed but COPYING any content or graphics to your server is expressly prohibited.