Antenna Design and Propagation Channel Characterization
A low-profile top-loaded folded helical antenna
Dimensions of a spherical helix antenna that operates at 1.12 GHz. | Download Scientific Diagram
A novel design for a dual-mode triple-band communication terminal antenna based on the quadrifilar helix antenna and the BeiDou satellite navigation system - ScienceDirect
Antenna Theory - Helical
Electrically small, copper strip made folded spherical helix antennas realized by 3D printing technology
Folded conical helix antenna
PDF] Novel Quadrifilar Helix Antenna combining GNSS, Iridium, and a UHF communications monopole | Semantic Scholar