wifi router antenna

1.(Frequency) 2400--2500MHz
2.(VSWR)1.8 max
3.(Gain) 20dBi
4.(Polarization Type)Linear Vertical
5.(Rated Power)30W
Standard IEEE802.11b,IEEE802.11g,IEEE802.11n
(Main Technical Specifications)
1.(Frequency) 2400--2500MHz
2.(VSWR) 1.8 max
3.(Gain) 20dBi
4.(Polarization Type)Linear Vertical
5.(Rated Power)30W
6.(Input Impedance)50 Ohms nominal
7.(Dimensions) 44.4cm*6.8cm*1.6cm
8.(Cable Type)
9.(Length) 0.25M
10.(Connector Type) RP-SMA
11.(Install the Way) Adsorption
12.(Weight of Antenna) 230g