Starter NXP board to test NFC at greater distance?

[scottj]

I understand the standard distance for NFC is quite small, <2cm but I've seen people experimenting with ways to make that distance a bit longer (I was hoping for 10-20cm if possible). Of course, anything like this could be out of spec but I was hoping to try a few variations to make this possible:

* A powered antenna

* A better (bigger?) antenna

The goal is to use stock phones with standard NFC equipment. Is it possible to make a 'creative' NFC style device that could have this longer range yet still work with an existing phone?

My goal is to use an NXP board with the ability to test these variables and validate it works with a standard phone. Please reply with any boards and, if possible, how to configure them to get this greater read distance.

Thank you,

Scott

[estephania_mart]

Hello,

10 centimeters it's achievable and still compliant with the specification, nonetheless, there are some antenna design considerations that need to be taken into account while making your custom design. The antenna size it's indeed an element to consider , still, if you filtering and tuning it's not good enough your distance will remain being short.

Which device are you using ?

Regards,

Estephania

[scottj]

No device yet, i'm just trying to get started with NFC and want the right board to test the various options (more arduino-like)

My understanding is that for an NFC exchange, the phone sends out a low power beacon which a *powered* badge can reply to. This is for greater distances.

Standard usage is a magnetic pulse from the phone which the badge reflects back. I'm trying to understand what hardware is necessary for the powered version.

please feel free to reply directly to scottj@google.com