DIFF Subgroup
H01Q 15/02 Refracting or diffracting devices, e.g. lens, prism
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices > Refracting or diffracting devices, e.g. lens, prism
CPC:
Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q3/00; arrangements of such devices for guiding waves H01P3/20; variable for purpose of modulation H03C7/02) > Refracting or diffracting devices, e.g. lens, prism
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
Child Classifications
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- H01Q 15/04 comprising wave-guiding channel or channels bounded by effective conductive surfaces substantially perpendicular to the electric vector of the wave, e.g. parallel-plate waveguide lens IPC+CPC Available in IPC and CPC
- H01Q 15/06 comprising plurality of wave-guiding channels of different length IPC+CPC Available in IPC and CPC
- H01Q 15/10 comprising three-dimensional [3D] array of impedance discontinuities, e.g. holes in conductive surfaces or conductive discs forming artificial dielectric IPC+CPC Available in IPC and CPC