公开(公告)号：US20210148836A1

公开(公告)日：2021-05-20

申请号：US16623883

申请日：2018-06-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zohaib Hameed ,  Nicholas T. Gabriel ,  Ronald D. Jesme ,  Christian Weinmann ,  Kristin J. Godbey ,  Bret W. Ludwig ,  John P. Baetzold

IPC: G01N22/04 ,  H01Q1/22 ,  H04B5/00

Abstract: Wireless sensing devices including stable near-field antennas are provided. A spacer layer is attached to a portion of the substrate adjacent to the antenna. The spacer layer has a thickness T, a relative permittivity k, and a figure of merit defined as the ratio of T (in micrometers) by k. The spacer layer has the figure of merit no less than 20 (micrometers).

公开(公告)号：US11119053B2

公开(公告)日：2021-09-14

申请号：US16623883

申请日：2018-06-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zohaib Hameed ,  Nicholas T. Gabriel ,  Ronald D. Jesme ,  Christian Weinmann ,  Kristin J. Godbey ,  Bret W. Ludwig ,  John P. Baetzold

IPC: G01N22/04 ,  H01Q1/22 ,  H04B5/00

Abstract: Wireless sensing devices including stable near-field antennas are provided. A spacer layer is attached to a portion of the substrate adjacent to the antenna. The spacer layer has a thickness T, a relative permittivity k, and a figure of merit defined as the ratio of T (in micrometers) by k. The spacer layer has the figure of merit no less than 20 (micrometers).