Are there commercially available coils plus shields smaller than Vishay's IWAS4832FF, which is 1.89"x1.26" [48x32mm]?
If I want to try experimenting with PCB coils, are there any app notes with guidelines about the optimal design? I understand the more loops the coil makes the better, but how much space should be left in the center?
Where could I find shielding material?
