公开(公告)号：US20210367342A1

公开(公告)日：2021-11-25

申请号：US17397167

申请日：2021-08-09

Applicant: Google LLC

Inventor： Hung-Chi Chiu ,  Wei-Yang Wu ,  Che-Ting Yeh ,  Li Wang

IPC: H01Q7/06 ,  H02J50/40 ,  H04B5/00

Abstract: An optimized near-field communication (NFC) antenna structure for reduced coupling with a wireless charging (WLC) coil of a computing device includes the WLC coil and an NFC coil that at least partially overlaps the WLC coil. The NFC coil of the optimized structure may include two sections that partially overlap the WLC coil and meet, over the WLC coil, at an angle to reduce coupling between the WLC coil and the NFC coil. The angled shape of the NFC coil may be implemented in various shapes resulting in one or more angles such that the first and second sections of the NFC coil are angled with respect to one another over the WLC coil. The combination or shape of the angles of the NFC coil, as well as NFC coil position relative to the WLC coil, may be optimized to reduce coupling between the NFC coil and the WLC coil.

公开(公告)号：US20230009962A1

公开(公告)日：2023-01-12

申请号：US17375504

申请日：2021-07-14

Applicant: Google LLC

Inventor： Che-Ting Yeh ,  Wei-Yang Wu ,  Hung-Chi Chiu

IPC: H01Q1/22 ,  H01Q7/06 ,  H02J7/02 ,  H02J50/10 ,  G06F1/16

Abstract: A near-field communication (NFC) antenna structure for radiation enhancement of a computing device that includes a ferrite sheet, separated into two sections. The NFC antenna structure may be used to improve (i) the magnetic field strength generated by an NFC antenna and (ii) inductive coupling to a receiving antenna of another computing device. A first ferrite section may be placed on a first side of the NFC antenna to at least partially overlap the NFC antenna, and a second ferrite section may be placed on a second side (opposite the first side) to at least partially overlap the NFC antenna. The first ferrite section may be positioned towards a top end that is often positioned closest to a receiving device, as held by a user when performing a contactless communication of the computing device, to increase the magnetic field strength and improve the inductive coupling at the top end.