RFID module with rssi output?

Using Arduino Project Guidance
1

Hello, I was wondering if anybody knows where I can get a RFID receiver which is rssi enabled which is outputted through a pwm/voltage connection or serial connection?
This would preferably be an ACTIVE rfid reader as the antenna/read radius is omni-directional and is more reliable than passive.
The rssi data will be fed into my arduino, the rssi data will be averaged then outputted.

I have found these but they dont seem very reliable: http://www.ananiahelectronics.com/RF9315R.htm http://www.ananiahelectronics.com/RF2315R.htm

If anyone knows where I can purchase one and is not dependent on a computer that would be great.
Thanks

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Hi Rep8:
The RSSI function is common nowadays. Many UHF band solutions support that. what application does you deploy for?

3

Forbelaw:
Hi Rep8:
The RSSI function is common nowadays. Many UHF band solutions support that. what application does you deploy for?

I know the rssi function is common but there are very small amounts of modules which physically output it, I have found one which looks promising and will probably go forwards with it. The application is for the rfid receiver to determine the closest tag and proportionally apply voltage (0-3.3v).
I have enquired and am looking to get an evaluation/development kit of this: Domain Parked With VentraIP Australia if you do find another module which is reliable and meets the similar specifications of the model above, feel free to sent it to me. Thanks