This compact GSM omnidirectional "rubber-duck" WiFi antenna provides broad coverage and 3dBi gain. It is a coaxial sleeve design with an omni-directional pattern. It is ideally suited for IEEE 802.11b and 802.11g wireless LANs
This flexible antenna features a SMA-plug connector.It is suitable as a replacement RF antenna for many access points and radios that are equipped with SMA connectors including D-LinkR, LinksysR WET11 and others.
for wireless router and WLAN PCI card
SMA Plug Connector