US 12,272,871 B2
Low-profile frequency-selective antenna isolation enhancement for dual-polarized massive MIMO antenna array
Jiantong Li, Plano, TX (US); Xinguang Xu, Allen, TX (US); Khurram Muhammad, Southlake, TX (US); and Gang Xu, Allen, TX (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 28, 2022, as Appl. No. 17/815,927.
Claims priority of provisional application 63/227,200, filed on Jul. 29, 2021.
Prior Publication US 2023/0052803 A1, Feb. 16, 2023
Int. Cl. H01Q 1/52 (2006.01); H01Q 1/48 (2006.01); H01Q 21/06 (2006.01); H01Q 5/35 (2015.01)
CPC H01Q 1/521 (2013.01) [H01Q 1/48 (2013.01); H01Q 21/065 (2013.01); H01Q 5/35 (2015.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a substrate;
a first antenna panel coupled on the substrate and comprising an array of first antenna elements;
a second antenna panel coupled on the substrate comprising an array of second antenna elements; and
an antenna isolator coupled on the substrate, the antenna isolator including:
a plurality of walls extending outwardly from the substrate along a length of the substrate between the first antenna panel and the second antenna panel, wherein the plurality of walls includes a T-shaped wall configured to reduce horizontal diffraction between at least two L-shaped walls and wherein the plurality of walls are configured to reduce wave propagation between the array of first antenna elements and the array of second antenna elements,
a first electromagnetic band-gap (EBG) element positioned along an edge of the first antenna panel for the length of the substrate between the first antenna panel and the plurality of walls and configured to reduce surface wave propagation from the array of first antenna elements, wherein the first EBG element includes a plurality of first patches positioned on the substrate and linearly spaced along the edge of the first antenna panel for the length of the substrate, and
a second EBG element positioned along an edge of the second antenna panel for the length of the substrate between the second antenna panel and the plurality of walls and configured to reduce surface wave propagation from the array of second antenna elements.