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IPC Subgroup
H01Q 3/44

varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element

Introduced: January 1980

Last revised: January 2006

Full Title

Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system > varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
ANTENNAS, i.e. RADIO AERIALS

1 direct subcode

Child Classifications

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  • H01Q 3/46 Active lenses or reflecting arrays