RF Signal Generator in its simplest form...

Discussion in 'Wireless & RF Design' started by ArkGullwing, Jun 29, 2013.

  1. ArkGullwing

    Thread Starter New Member

    Jun 29, 2013
    Hey guys, not sure if this is the right place to ask this cause I just stumbled upon it via google searches... but here goes.

    I'm no electrical engineer but I want a 13.56mhz signal generator that does nothing but radiate a constant low power signal. Something I can attach an exposed copper wire to and run along a shelf to light up some things that light up when exposed to RF energy.

    How would I go about doing this?
  2. MrChips


    Oct 2, 2009
    I assume you mean 13.56MHz and not 13.56mHz.

    Why 13.56MHz?

    Are you messing with RFID?
  3. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    Will the things that light up be self powered or will they rely on the RF source to supply the energy to both activate & power the things.
  4. ArkGullwing

    Thread Starter New Member

    Jun 29, 2013
    yes 13.56 MHz

    And they are just some LED's in a circuit that seems to be powered by the ambient RF energy, they have RFID chips in them and while the device they normally use is talking to them, they light up, whether there is actual data being passed or not.

    Skip to around 1:30

  5. ArkGullwing

    Thread Starter New Member

    Jun 29, 2013
    The LED's do happen to come on when placed near some public transport RFID readers and such so I'm guessing that they either work when they detect that specific frequency, or if they detect any RF energy in a strong enough context. I would assume that it'd cost more to light up when only exposed to 13.56 MHz with no real discernible benefit to being so discreet, hence my thought that they MAY work with other freq's. I have a 2947 that I plan on testing this with tomorrow some time, hopefully I can just put these near the output port and generate an RF signal, starting at 13.56 MHz to confirm the test would work, and then play around with the freq range and what not.