Before just asking that question..I would first make sure my IPAD had the latest software not only for the IPAD but also it's bulit in Wifi
iPad: Troubleshooting Wi-Fi networks and connections
Then just to make sure nothing is fishy with what it might have stored to date..Since I think when you turn it on it will try to connected to anything stored to date.
Topic : Manually removing stored Wifi networks from iPad?
Settings > General > Reset network settings
Since we don't know what router you do have this might also help..
Improve your 802.11n speeds using WPA2 vs. WPA/WEP
»Performance hit? WEP VS. WPA VS. WPA2
"It really depends on the router. Underpowered old routers don't like the encryption overhead and will slow down somewhat. My guess is about 10-15% for either WEP or WPA on older units. In many cases, it's also affected by the speed of the client computah, especially if the WPA encryption is done in driver. Fortunately, this hasn't been the case for many years. These daze, there's hardly any slowdown of either technology."
The best password choices for your 802.11n router are the WPA/WPA2 Personal option or the WPA2 Personal option.
WPA/WPA2 Personal will have the fastest transfer rates when only one device (unicast) is being served. When other devices are using the network, they will run in multicast at 54 Mbps.
WPA2 Personal will provide the best 802.11n transfer rates and is recommend for the majority of users.--
Gladiator Security Forum