Patent ID: 11936111
Assignee: GAPWAVES AB
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An antenna array for operation in a frequency band, the antenna array having a layered configuration comprising:
a base layer with a metamaterial structure, the metamaterial structure being arranged to attenuate electromagnetic radiation propagating along said base layer in the frequency band;
a printed circuit board (PCB) layer, arranged on top of the base layer and comprising at least one radio frequency (RF) integrated circuit (IC) arranged on a side of the PCB layer facing the base layer, the PCB layer further comprising one or more feeds for transferring RF signals from the RF IC(s) to an opposite side of the PCB layer;
at least one feed layer arranged on the opposite side of the PCB layer from the RF IC(s), the feed layer comprising at least one waveguide on the side of the feed layer facing away from the PCB layer, each waveguide comprising a ridge along which electromagnetic waves are conducted, each waveguide further comprising one or more metamaterial structures, the metamaterial structures being arranged to attenuate electromagnetic radiation propagating in directions other than along the waveguide in the frequency band; and
a radiating layer arranged on the at least one feed layer, the radiating layer comprising a plurality of radiating elements for transmitting and/or receiving RF signals.