Wideband RF Field Strength Meter


Posted on Feb 6, 2014

Field strength meter is extremely useful when working with RF devices. It can be used to quickly diagnose whether a transmitter circuit is working, and can be used to detect RF signals in the environment. The simplest field strength meter could be built with a tuned LC circuit and a germanium diode, just like the way of a building a crystal radio except replacing the ear piece with a high sensitivity current meter. While this approach fits the needs of most simple applications, it has a pretty narrow frequency range (~100 MHz) and requires tuning the LC circuit to the correct frequency before measurements can be made and the design can become complicated if wider frequency range tuning is desired


Wideband RF Field Strength Meter
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    AVR Microcontroller Digital Clock with ATtiny2313
    Laser Head (A2074) Manual
    fm radio controller anti theft alarm
    Thrifty 2Hz Clock
    Thyristor Fired Coilgun
    LM2889 Lm2889 Tv Video Modulator - National Semiconductor
    VHF Audio Video Transmitter
    L297/298 Stepper Motor Controller
    ISL6308A Three-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers
    Internal functional block diagram of NCP5201
    Three-phase asynchronous motor PTC protection circuits
    Cookers detection control circuit



    Top