公开(公告)号：US20220416436A1

公开(公告)日：2022-12-29

申请号：US17356853

申请日：2021-06-24

Applicant: Silicon Laboratories Inc.

Inventor： Attila Zólomy ,  Adám Süle ,  Andrea Nagy ,  Jeffrey Tindle ,  Pasi Rahikkala ,  Terry Lee Dickey

IPC: H01Q21/00 ,  H01Q9/04 ,  H01Q1/48

Abstract: An antenna array that utilizes ground guard rings and metamaterial structures is disclosed. In certain embodiments, the antenna array is constructed from a plurality of antenna unit cells, wherein each antenna unit cell is identical. The antenna unit cell comprises a top surface, that contains a patch antenna and a ground guard ring. A reactive impedance surface (RIS) layer is disposed beneath the top surface and contains the metamaterial structures. The metamaterial structures are configured to present an inductance to the patch antennas, thereby allowing the patch antennas to be smaller than would otherwise be possible. In some embodiments, the metamaterial structures comprise hollow square frames. An antenna array constructed using this antenna unit cell has less coupling than conventional antenna arrays, which results in better performance. Furthermore, this new antenna array also requires less space than conventional antenna arrays.

公开(公告)号：US11611152B2

公开(公告)日：2023-03-21

申请号：US17356853

申请日：2021-06-24

Applicant: Silicon Laboratories Inc.

Inventor： Attila Zólomy ,  Adám Süle ,  Andrea Nagy ,  Jeffrey Tindle ,  Pasi Rahikkala ,  Terry Lee Dickey

IPC: H01Q15/00 ,  H01Q21/00 ,  H01Q1/48 ,  H01Q9/04

Abstract: An antenna array that utilizes ground guard rings and metamaterial structures is disclosed. In certain embodiments, the antenna array is constructed from a plurality of antenna unit cells, wherein each antenna unit cell is identical. The antenna unit cell comprises a top surface, that contains a patch antenna and a ground guard ring. A reactive impedance surface (RIS) layer is disposed beneath the top surface and contains the metamaterial structures. The metamaterial structures are configured to present an inductance to the patch antennas, thereby allowing the patch antennas to be smaller than would otherwise be possible. In some embodiments, the metamaterial structures comprise hollow square frames. An antenna array constructed using this antenna unit cell has less coupling than conventional antenna arrays, which results in better performance. Furthermore, this new antenna array also requires less space than conventional antenna arrays.