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IPC Subgroup
H01Q 7/04

Screened antennas

Introduced: September 1968

Last revised: January 2006

Full Title

Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop > Screened antennas

Classification Context

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

Scope Notes

Limiting references: Collapsible antennas; Retractable antennas Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material