[dorkbotdc-blabber] Making your own antenna

[Justin Sabe]

are you using it to excite and read RFID tags? I think RFID antennas
are just a little bit different acting as part of an open air
transformer rather than a regular radio circuit.

http://ww1.microchip.com/downloads/en/AppNotes/00710c.pdf

In my self taught half assed interoperation is all that fancy talk
means that you take a multiple of the wavelength of the antenna (half
wave=length in feet=468/freq in mhz) and then some diddling for
capacitance and proper impedance balance.


On Mon, Oct 6, 2008 at 4:48 PM, Andrew Q Righter
<andrew at i11industries.com> wrote:
> Howdy,
>
>      Does anyone have any experience / info they can shoot over to me about
> building your own antenna? I have an RF circuit I built using a Son-Micro
> SM125IC and it basically just requires power and an antenna, I need to make
> an antenna with a FR of 125KHz. I've never done this part before, any help
> would be great. I think that you can wrap magnet wire and use a variable
> capacitor to tune it, is this right?
>
> Any links/info would help!
>
> Sorry about being MIA lately, I'm on too many projects ATM and trying to
> complete them all at once is a nightmare.
>
> Cheers,
>
> --
> Andrew Q Righter
>
> Founder: the Q labs
> CoFounder: HacDC
>
> C: 856 625 4253
> E: q at theqlabs.com
>
> ........................................................................
> .......dorkbot dc: people doing strange things with electricity.........
> ................... http://dorkbot.org/dorkbotdc .......................
> ........................................................................
>