公开(公告)号：US09515750B2

公开(公告)日：2016-12-06

申请号：US14863131

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Mahbod Mofidi ,  Kritarth Yudhish ,  Bakhtiyar Neymanov ,  John Saad, Jr. ,  Stephen Frankland

IPC: H04B5/00 ,  H04B17/21 ,  G06K7/10 ,  H04B17/14

CPC classification number: H04B17/21 ,  G06K7/10336 ,  H04B5/0031 ,  H04B5/0075 ,  H04B17/14

Abstract: A method for inductively coupled communication is described. The method includes applying a carrier signal at a carrier frequency to an antenna circuit. The antenna circuit includes an antenna and a matching network that resonate at a resonant frequency. The method also includes measuring a looped-back signal over a range of impedance values. The looped-back signal includes the carrier signal received by a receiver coupled to the antenna circuit. The method further includes setting a calibrated impedance as an impedance configuration that produces a resonance peak in the looped-back signal.

Abstract translation: 描述了一种用于电感耦合通信的方法。 该方法包括以载频将载波信号应用于天线电路。 天线电路包括天线和谐振频率共振的匹配网络。 该方法还包括测量阻抗值范围内的环回信号。 环回信号包括由耦合到天线电路的接收器接收的载波信号。 该方法还包括将校准的阻抗设置为在环回信号中产生谐振峰值的阻抗配置。

公开(公告)号：US20160028445A1

公开(公告)日：2016-01-28

申请号：US14626106

申请日：2015-02-19

Applicant: QUALCOMM Incorporated

Inventor： Mahbod MOFIDI ,  Vincent So ,  Kritarth Yudhish ,  Sumanth Keragodu Surya Prakash

IPC: H04B5/00

CPC classification number: H04B5/0081 ,  G06K7/10297 ,  H04B5/0025

Abstract: Aspects disclosed herein relate to mitigating an antenna over-coupling condition in near field communication (NFC) devices. A transmission signal for a transmitted carrier is generated at a transmit circuit of an initiator NFC device, and a received carrier is received at a receive circuit of the initiator NFC device. The initiator NFC device can detect an antenna over-coupling condition related to antenna coupling with a remote NFC device based at least in part on the transmission signal and the received carrier. Where the condition is detected, at least one of a transmit circuit parameter for the transmit circuit or a receive circuit parameter of the receive circuit is modified to reduce the antenna over-coupling condition

Abstract translation: 本文公开的方面涉及减轻近场通信（NFC）装置中的天线过耦合状况。 在发起者NFC设备的发送电路处生成用于发送的载波的发送信号，并且在发起者NFC设备的接收电路处接收所接收的载波。 发起者NFC设备可以至少部分地基于传输信号和所接收的载波来检测与远程NFC设备的天线耦合有关的天线过耦合状况。 在检测到条件的情况下，修改发射电路的发射电路参数或接收电路的接收电路参数中的至少一个，以减少天线过耦合条件

公开(公告)号：US20160134382A1

公开(公告)日：2016-05-12

申请号：US14863131

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Mahbod Mofidi ,  Kritarth Yudhish ,  Bakhtiyar Neymanov ,  John Saad, JR. ,  Stephen Frankland

IPC: H04B17/21 ,  H04B5/00

CPC classification number: H04B17/21 ,  G06K7/10336 ,  H04B5/0031 ,  H04B5/0075 ,  H04B17/14

Abstract: A method for inductively coupled communication is described. The method includes applying a carrier signal at a carrier frequency to an antenna circuit. The antenna circuit includes an antenna and a matching network that resonate at a resonant frequency. The method also includes measuring a looped-back signal over a range of impedance values. The looped-back signal includes the carrier signal received by a receiver coupled to the antenna circuit. The method further includes setting a calibrated impedance as an impedance configuration that produces a resonance peak in the looped-back signal.

Abstract translation: 描述了一种用于电感耦合通信的方法。 该方法包括以载频将载波信号应用于天线电路。 天线电路包括天线和谐振频率共振的匹配网络。 该方法还包括测量阻抗值范围内的环回信号。 环回信号包括由耦合到天线电路的接收器接收的载波信号。 该方法还包括将校准的阻抗设置为在环回信号中产生谐振峰值的阻抗配置。