Non-resonant antennas, e.g. travelling-wave antenna (Yagi antennas H01Q19/30)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Non-resonant antennas, e.g. travelling-wave antenna

CPC: Non-resonant antennas, e.g. travelling-wave antenna (Yagi antennas H01Q19/30)

Full Title

Full titles differ between systems:

IPC:

Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements > Non-resonant antennas, e.g. travelling-wave antenna

CPC:

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)

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01Q 11/04 with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna (H01Q11/06 – H01Q11/10 take precedence) IPC+CPC Available in IPC and CPC
H01Q 11/06 Rhombic antennas; V-antennas IPC+CPC Available in IPC and CPC
H01Q 11/08 Helical antennas +2 CPC IPC+CPC Available in IPC and CPC
H01Q 11/10 Logperiodic antennas (H01Q11/08 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC