[ANT]”How free must an PCB antenna strip be? I.e. minimum distance to neighbor parts/ground lines?

There are no absolute requirement but some guideline. General rule is that  the further distance between object/ground plane and antenna the better. If you have to “fold” the antenna toward the ground plane, a distance equal to  1/16 of the wave length will keep you safe. Only small adjustment in antenna length needed to retune the effect of ground lines.

Last Update: August 8, 2017  

January 11, 2017   1322    Antenna Q&A