CPC Subgroup
H01Q 11/08 Helical antennas
Full Title
Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements (leaky waveguides antennas or slot antennas H01Q13/00) > Non-resonant antennas, e.g. travelling-wave antenna (Yagi antennas H01Q19/30) > Helical antennas
2 direct subcodes
Child Classifications
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