DIFF Subgroup
H01Q 9/40 Element having extended radiating surface
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements > Resonant antennas > with feed to end of elongated active element, e.g. unipole > Element having extended radiating surface
CPC:
Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements > Resonant antennas > with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) > Element having extended radiating surface
No child classifications to compare. This is a leaf node in both IPC and CPC.