I would like to make a remote control device for my gate. I checked my local supplier and they can only bring in the AT86RF212 (dont have stock of the AT86RF230/1). I like the idea of the added range of the RF212! Imagine pushing a button to open your gate like 200m away, then by the time you arrive home its open!
The gate controller is going to be mounted in a metal box (Its what I already have), so I would like to use an external Antenna. For the remote control I presume I use a small SMD ceramic antenna?
The AT86RF212 seems like a fantastic device, but trying to get a balun and antenna is really possing a big problem for me.
I have been googling for ages with no success with regards to a commonly available antenna's (also checked the datasheet). I am from South Africa and I dont care if the antenna is anywhere between 700 to 900MHz, its just needs to be a common part that I have a hope of buying!
I can only find lots of App Notes for the AT86RF230 antenna, nothing on the AT86RF212.
This is the best results for an antenna my googling has found:
But its about 7 british pounds!!!
I will read anything anyone points me too! Thanks for any help.
This antenna stuff seems like a black art secret :?