CC2651R3SIPA: Internal antenna layout width G question

Part Number: CC2651R3SIPA


Hi, I saw on another forum post that spec "G" being less that 10mm violates specifications. What is the bad downside? I'm curious if only 5mm on each side (until edge of PCB) is possible how that would affect a design versus suggested 10mm. Perhaps violates the FCC certification of compliance then... that may be show stopper

Space is main concern and unable to sacrifice the 10mm x 3mm (x2) unfortunately.