15 dBi antenna, pcb panel antenna

This is a scan from CPE with a internal antenna, the gain is 15 dBi , the dimenssion are 340 mm width and 480 mm heigth. The pcb is very thin, less than 1 mm(glass fiber).

The reflector is separate 6 mm in the back and the dimensions are 275 mm heigth
by 200 mm width.(not shown in the picture, becouse is unmounted)


The four corners are grounded with the screws.
Am try to do a board in Cadsoft Eagle with this design, but the ondulated vias are hard to make, later I going to do that.