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Figure 1 from Electrically-small folded cylindrical helix antenna for Wireless Body Area Networks | Semantic Scholar
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Electrically small, copper strip made folded spherical helix antennas realized by 3D printing technology
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Figure 20 from Vertically Polarized Dipoles and Monopoles, Directivity, Effective Height and Antenna Factor | Semantic Scholar
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Figure 16 from The performance properties of electrically small resonant multiple-arm folded wire antennas | Semantic Scholar
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Figure 3 from The radiation properties of electrically small folded spherical helix antennas | Semantic Scholar
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