Invention Grant
- Patent Title: NFC communicators implementing coil voltage reduction circuitry
- Patent Title (中): 实现线圈降压电路的NFC通信器
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Application No.: US12532737Application Date: 2008-03-20
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Publication No.: US08489020B2Publication Date: 2013-07-16
- Inventor: Joakim Bangs , Robin Wilson , Franz Fuchs
- Applicant: Joakim Bangs , Robin Wilson , Franz Fuchs
- Applicant Address: GB Cambridge, Cambridgeshire
- Assignee: Broadcom Innovision Limited
- Current Assignee: Broadcom Innovision Limited
- Current Assignee Address: GB Cambridge, Cambridgeshire
- Agency: Sterne, Kessler, Goldstein & Fox PLLC
- Priority: GB0705635.1 20070323
- International Application: PCT/GB2008/000992 WO 20080320
- International Announcement: WO2008/117029 WO 20081002
- Main IPC: H04B5/00
- IPC: H04B5/00 ; H01Q21/00

Abstract:
An NFC communicator has an antenna circuit to enable inductive coupling, via an RF H field, of the NFC communicator and another near field RF communicator in near field range. The antenna circuit has an antenna element coupled in parallel with a first capacitor to form a parallel LC circuit. The antenna element has an antenna coil in series with a second capacitor to reduce the voltage to which circuitry of the NFC communicator is subjected by a received RF H field. Alternatively or additionally, receive circuitry of the NFC communicator may be coupled to only a proportion of the antenna coil to reduce the voltage to which circuitry of the NFC communicator is subjected by a received RF H field.
Public/Granted literature
- US20100112941A1 NFC COMMUNICATORS Public/Granted day:2010-05-06
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