公开(公告)号：US09385790B1

公开(公告)日：2016-07-05

申请号：US14587817

申请日：2014-12-31

Applicant: Texas Instruments Incorporated

Inventor： Subhashish Mukherjee ,  Anoop Bhat ,  Kumar Anurag Shrivastava

IPC: H03D5/00 ,  H03K7/10 ,  H03K9/10 ,  H03C5/00 ,  H04B5/00 ,  H04L27/04

CPC classification number: H04B5/0087 ,  H04B5/0031 ,  H04L27/04

Abstract: A method of inductive coupled communications includes providing a first resonant tank (first tank) and a second resonant tank (second tank) tuned to essentially the same resonant frequency, each having antenna coils and switches positioned for changing a Q and a bandwidth of their tank. The antenna coils are separated by a distance that provides near-field communications. The first tank is driven to for generating induced oscillations to transmit a predetermined number of carrier frequency cycles providing data. After the predetermined number of cycles, a switch is activated for widening the bandwidth of the first tank. Responsive to the oscillations in the first tank, the second tank begins induced oscillations. Upon detecting a bit associated with the induced oscillations, a switch is activated for widening the bandwidth of the second tank and a receiver circuit receiving an output of the second tank is reset.

Abstract translation: 电感耦合通信的方法包括提供调谐到基本上相同的谐振频率的第一谐振回路（第一储罐）和第二谐振回路（第二储罐），每个谐振回路具有天线线圈和开关，用于改变其罐的Q和带宽 。 天线线圈分开一个提供近场通信的距离。 驱动第一坦克用于产生感应振荡以传送提供数据的预定数量的载波频率周期。 在预定数量的循环之后，启动开关以扩大第一箱的带宽。 响应于第一个罐中的振荡，第二个罐开始诱发振荡。 在检测到与感应振荡相关联的位时，启动开关以加宽第二箱的带宽，并且接收接收第二箱的输出的接收器电路被复位。

公开(公告)号：US20150091502A1

公开(公告)日：2015-04-02

申请号：US14043516

申请日：2013-10-01

Applicant: Texas Instruments Incorporated

Inventor： Subhashish Mukherjee ,  Yogesh Darwhekar ,  Gireesh Rajendran

IPC: H02J7/02 ,  H01Q7/00 ,  H04B5/00

CPC classification number: H02J50/10 ,  H01Q1/38 ,  H01Q7/00 ,  H01Q21/28 ,  H02J7/025 ,  H02J17/00 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0081 ,  Y10T29/49018

Abstract: A method of coupling a first port of a single antenna to a first coupling circuit and a second port of the single antenna to a second coupling circuit. The method includes coupling a wireless charging unit to the first coupling unit and coupling an NFC transceiver block to the second coupling circuit. The method further includes isolating the single antenna from the wireless charging unit during a time interval when the NFC transceiver block is operational and isolating the single antenna from the NFC transceiver block during a time interval when the wireless charging unit is operational.

Abstract translation: 一种将单个天线的第一端口耦合到单个天线的第一耦合电路和第二端口到第二耦合电路的方法。 该方法包括将无线充电单元耦合到第一耦合单元并将NFC收发器模块耦合到第二耦合电路。 该方法还包括在NFC收发器模块运行的时间间隔期间隔离单个天线与无线充电单元的隔离，并且在无线充电单元可操作的时间间隔期间将单个天线与NFC收发器模块隔离开。