Patent ID: 11862853
Assignee: POYNTING ANTENNAS (PTY) LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A broad band directional antenna comprising:
a conductive ground plane having a main axis extending perpendicularly to the conductive ground plane;
at least one active radiator which is axially spaced from the conductive ground plane in one direction,
a metamaterial ground plane assembly comprising:
a metamaterial ground plane having a periphery;
a first conductive wall immediately adjacent the periphery of the metamaterial ground plane, the first conductive wall having a bottom and a top; and
a second wall comprising at least two mutually electrically insulated conductive wall parts located spaced from and outside of the first conductive wall, the metamaterial ground plane assembly being arranged such that the bottom of the first conductive wall is located between the conductive ground plane and the metamaterial ground plane and the top of the first conductive wall is located beyond the at least one active radiator in the one direction; and

at least one conductive pillar between the first conductive wall and the conductive ground plane.