Arrays of individually energised antenna units similarly polarised and spaced apart

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Antenna arrays or systems > Arrays of individually energised antenna units similarly polarised and spaced apart

CPC:

Antenna arrays or systems (arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00) > Arrays of individually energised antenna units similarly polarised and spaced apart

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01Q 21/061 +5 CPC CPC only CPC only
H01Q 21/08 the units being spaced along or adjacent to a rectilinear path IPC+CPC Available in IPC and CPC
H01Q 21/20 the units being spaced along or adjacent to a curvilinear path +1 CPC IPC+CPC Available in IPC and CPC
H01Q 21/22 Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array +1 CPC IPC+CPC Available in IPC and CPC