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IPC Subgroup
H01Q 3/12

using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems

Introduced: September 1968

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 > using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems

Classification Context

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

2 direct subcodes

Child Classifications

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  • H01Q 3/14 for varying the relative position of primary active element and a refracting or diffracting device