Sorry, that last link has been corrected. They each work for me, please let me know if you are still having an issue.

The Ninjaflex substrate was 3-D printed by Hyrel 3-D printer and then the copper tape of the optimized loop antenna size was glued on the top of the 3-D hemispherical support. The connection between the 50 Ω-coaxial SMA connector and the loop antenna terminals was realized utilizing a silver epoxy.