Low cost microwave field strength meter

Posted on Apr 23, 2012

When operating, a waveguide directs energy onto a crystal detector. The diode shown is for X-band operation. The waveguide is a 1H inch piece of plastic tubing with the ends flared. The plastic is coated with an elec-troless copper solution to provide a conducting surface. The dimensions are not critical. For calibrated readings, the meter is placed in a known field or else compared to a calibrated meter

Low cost microwave field strength meter
Click here to download the full size of the above Circuit.

To operate the meter, point it away from the signal. Switch the meter to the desired range, and adjust the zero control for a 0 reading. Then point the waveguide at the signal, and read field strength directly.

Leave Comment

characters left:

New Circuits



Popular Circuits

Free energy battery charger
Phase detector with 10-bit accuracy
High-Voltage Pulse Supply
Open-Loop Peak Detector Circuit
Make an Atom Synchronised Clock from a 1950s Slave Dial using Arduino
Water Level Indicator With Alarm
Simple Capacitive Touch Sensor
3A Switching Voltage Regulator based LM317HV
AC Phase control
Bicycle Speedometer With Hub Dynamo
Simple Infrared Control Extender
K7LR Memorial Receiver
MIDI circuits
AC power without power transistor switching circuit
555 astable multivibrator circuit diagram
Vanda F9500 servo power