[dorkbotdc-blabber] Making your own antenna

[Thomas Edwards]

I'd suggest you follow the design instructions for the specific RFID
reader - the antenna may need to match internal impedance in the chip.

For example, the Son-Micro antennas appear to need to be 860uH and 12 or 13 Ohm:
http://www.sonmicro.com/125n/antenna.php

Impedance mismatch can reduce the efficiency of the
antenna/transceiver combination:
http://en.wikipedia.org/wiki/Impedance_matching

-Thomas

On Mon, Oct 6, 2008 at 1:48 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.