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Figure 1 from Compact Design of Triple-Band Circularly Polarized Quadrifilar Helix Antennas | Semantic Scholar
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Backfire resonant quadrifilar helix antenna popular for GNSS,... | Download Scientific Diagram
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Figure 1 from Novel Quadrifilar Helix Antenna combining GNSS, Iridium, and a UHF communications monopole | Semantic Scholar
