I am designing a GPS module using the following chip antenna:
The datasheet recommends routing the antenna like this:
The long "L" shaped trace coming out of the antenna is connected to GND. What I don't understand is the vias. The datasheet says the antenna is to be placed over an area 5mm x 6mm with no copper beneath it. So what I don't understand is:
Where are those vias going?
How am I supposed to connect it to GND if I don't have any copper beneath it?
Unfortunately the datasheet doesn't provide much info and I am a total noob at designing for RF. I am pretty sure all the other vias you see on the image are part of a large GND pour, which are surrounding the feed trace from the antenna. I guess that is to shield the feed trace? Any help anyone can give here to help me understand how to get this design right the first time would be greatly appreciated.