Resonant antennas

Introduced: September 1968

Full Title

Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements > Resonant antennas

Of 6 combined children, 4 exist in both systems.

2 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01Q 9/0407 +8 CPC CPC only CPC only
H01Q 9/0485 +1 CPC CPC only CPC only
H01Q 9/06 Details +1 CPC IPC+CPC Available in IPC and CPC
H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole (H01Q9/44 takes precedence) IPC+CPC Available in IPC and CPC
H01Q 9/30 with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) IPC+CPC Available in IPC and CPC
H01Q 9/44 with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions (combinations of two or more active elements H01Q21/00; turnstile antennas H01Q21/26) IPC+CPC Available in IPC and CPC