Just finished fab on a new 'bi-quad' antenna. Click the image (~800kB), to have a look.
I got the info for this antenna from 'martybugs.net' site which does a real nice job of packaging up several home-brew WIFI antenna projects. I made one change to the construction where I just used a 14ga post for the ground side of the feedpoint as opposed to the specified 'coaxial' extension above the 'reflector' as shown on the martybug.net site.
Monday, I expect to receive a shipment of 'jumpers' to hook this antenna up to the Airnet AP. I'll post results when I have them.