Thanks for the support.
I checked the Wireless Workshop and also the list of supported WiFi Hardware.
I have Atheros AR95x Wifi Device and as per the list of supported WiFi Hardware, almost every Atheros chipset is supported.
I also tried
Downloaded the Zip archive from Ubuntu and executed the script.
I used Expander to see the list of firmwares, but it only had Broadcom and Marvel.
So what to do for the Atheros Drivers ?