Here is the scans of inside – very thin pcb board is used.
Some time ago I needed some 5ghz antennas – this is the first thing that I bought.
Dual-band 11a/g 7/5dBi Indoor Omni Antenna from trendnet.
The papers says :
||802.11a: 4.9 ~ 5.875GHz
802.11b/g: 2.4 ~ 2.5GHz
||802.11a:25° 802.11b/g: 35°
The stupid thing is that on the site specification and in pdf data sheets was said that this antenna have VERTICAL polarization, but now I can see that omnidirectional pattern came whit horizontal polarization!
This may be the reason why I am not happy whit this wifi antenna and it is still laying on my desk.
I will test it again when I have some time.
The other small wifi antenna that I have from trendnet is working great – I have small 5ghz link whit it – these days maybe will scan ti too.