> Is anyone on the list using Near Field Communication chips ? =A0I have
> had no joy obtaining any.
>
> I have long been trying to get some ICs to play with. =A0 NFC seems like
> a real cool technology.
> I have been subscribing to a newsletter: =A0 =A0NFC_World@mail.vresp.com

> For example:
> http://www.nxp.com/#/pip/pip=3D[pfp=3D53424]|pp=3D[t=3Dpfp,i=3D53424]

You can "roll your own" for playing with reasonable ease.
Essentially a short range crystal set will implement this.
This is effectively "inductive transfer" and for playing purposes just
driving a resonant coil and detecting the signal with another resonant
inductor at close range is going to be "near field".

Jodrell Bank radio telescope (and no doubt many other similar) near
field extends to beyond the atmosphere, making is "difficult" to test
RF equipment with it directly.

Possibly useful (but possibly stupid or ignorant :-) ) :
(Patents on such thjings often are, but they also often include
usefuil block diagrams)

          http://www.freepatentsonline.com/y2010/0045441.html

    http://www.freshpatents.com/Near-field-communications-nfc-communicators=
-and-nfc-communications-enabled-devices-dt20081009ptan20080246667.php

        http://www.freepatentsonline.com/y2009/0137204.html

        http://www.freepatentsonline.com/y2008/0280558.html


RFID tags and interface equipment should be a source for playing - and
quite cheap.


Figure 8 and figure 1 indicate that there is LESS to this than meets the ey=
e.

        http://www.datasheetarchive.com/pdf/Datasheet-014/DSA00241189.pdf



               R

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