here are some information

Modem Name & make: Huawei UMG1831 (Unlocked,21mbps)
Required power source : AC Power + Battery (A car adapter will also work)
WiFi Frequency: 802.11n, 802.11G

I am purchasing this for my WiFi only iPad hence it would be better if it is compact and easy to carry,, or takes a short space

Please suggest a WiFi router with these informations