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公开(公告)号：US10317504B1
公开(公告)日：2019-06-11
申请号：US15838570
申请日：2017-12-12
Applicant: NXP B.V.
Inventor： David Knabl , Harald Helfried Robert
Abstract: Embodiments of a radio frequency identification (RFID) reader are provided herein, which include an RFID interrogator; a detection surface for a game piece, the detection surface comprising a plurality of reader antennas in a geometric arrangement; and antenna switching circuitry coupled between the RFID interrogator and the plurality of reader antennas; wherein the antenna switching circuitry is configured to consecutively activate each one of the plurality of reader antennas for at least a detection time window, and wherein the RFID interrogator is configured to: for each reader antenna, detect whether a response signal is received by the reader antenna during the detection time window, and determine a geometric orientation of the game piece based on a subset of reader antennas that received the response signal.
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公开(公告)号：US11955729B2
公开(公告)日：2024-04-09
申请号：US17705221
申请日：2022-03-25
Applicant: NXP B.V.
Inventor： Oliver Kronschläger , David Knabl , Andreas Merl , Michael Stark , Erich Merlin
IPC: H01Q7/08
CPC classification number: H01Q7/08
Abstract: Embodiments of an antenna system and a method for operating an antenna are disclosed. In an embodiment, an antenna system includes a first ferrite element, a second ferrite element, a first coil wrapped around the first ferrite element, a second coil wrapped around the second ferrite element, a first antenna interface electrically coupled to the first coil, a second antenna interface electrically coupled to the second coil, and a conductor network connected between the first coil, the second coil, the first antenna interface, and the second antenna interface.
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公开(公告)号：US20230307837A1
公开(公告)日：2023-09-28
申请号：US17705221
申请日：2022-03-25
Applicant: NXP B.V.
Inventor： Oliver Kronschläger , David Knabl , Andreas Merl , Michael Stark , Erich Merlin
IPC: H01Q7/08
CPC classification number: H01Q7/08
Abstract: Embodiments of an antenna system and a method for operating an antenna are disclosed. In an embodiment, an antenna system includes a first ferrite element, a second ferrite element, a first coil wrapped around the first ferrite element, a second coil wrapped around the second ferrite element, a first antenna interface electrically coupled to the first coil, a second antenna interface electrically coupled to the second coil, and a conductor network connected between the first coil, the second coil, the first antenna interface, and the second antenna interface.
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