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公开(公告)号：US08115598B2
公开(公告)日：2012-02-14
申请号：US12048786
申请日：2008-03-14
IPC分类号： H04B5/22 , H04B1/38 , H04B1/40 , H04B7/00 , H04B1/66 , H04B7/02 , H04Q5/22 , H04M1/00 , H04L5/16 , G08B13/14 , G08B26/00 , G05B19/00
CPC分类号： H04B5/0012 , H04B5/0062 , H04B5/0087
摘要： A near field communication front-end includes an up conversion module, a plurality of coils, and a down conversion module. The up conversion module is coupled to convert an outbound symbol stream into a plurality of outbound signals based on a frequency-space encoding scheme. The plurality of coils is coupled to electromagnetically transmit the plurality of outbound signals and to electromagnetically receive a plurality of inbound signals in accordance with the frequency-space encoding scheme. The down conversion module is coupled to convert the plurality of inbound signals into an inbound symbol stream in accordance with the frequency-space encoding scheme.
摘要翻译： 近场通信前端包括上变频模块，多个线圈和下变频模块。 上变换模块被耦合以基于频率空间编码方案将出站符号流转换成多个出站信号。 多个线圈被耦合以电磁传输多个出站信号，并且根据频率 - 空间编码方案电磁地接收多个入站信号。 下变频模块被耦合以根据频率 - 空间编码方案将多个入站信号转换成入站符号流。
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公开(公告)号：US20120007715A1
公开(公告)日：2012-01-12
申请号：US13234632
申请日：2011-09-16
IPC分类号： G06K7/01 , G06K19/073
CPC分类号： G06K7/10198 , G06K7/0008 , G06K19/0724 , G06K19/073 , G06K19/07766 , H04B5/0012 , H04B5/0062 , H04B5/0087
摘要： A multi-mode RFID tag includes a power generating and signal detection module, a baseband processing module, a transmit section, a configurable coupling circuit, and an antenna section. In near field mode, the configurable coupling circuit is operable to couple the transmit section to a coil or inductor in the configurable coupling circuit to transmit an outbound transmit signal using electromagnetic or inductive coupling to an RFID reader. In far field mode, the configurable coupling circuit is operable to couple the transmit section to the antenna section, and the multi-mode RFID tag then utilizes a back-scattering RF technology to transmit the outbound transmit signal to RFID readers.
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公开(公告)号：US08094025B2
公开(公告)日：2012-01-10
申请号：US12942415
申请日：2010-11-09
IPC分类号： G08B13/14
摘要： A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要翻译： 用于消除接收路径中的阻塞信号的接收器架构包括用于接收和放大入站RF信号以产生放大入站信号的低噪声放大器，其中入站RF信号包括调制的RF信号和阻塞信号，以及取消 模块，用于基本上从放大的入站RF信号中消除阻塞信号并且基本上通过调制的RF信号。 消除模块通过产生表示阻塞信号的注入信号来消除阻塞信号，将阻塞信号与注入信号组合以产生误差信号，基于误差信号更新注入信号，并使用注入信号来取消阻塞 来自放大的入站RF信号的信号。
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公开(公告)号：US20080238688A1
公开(公告)日：2008-10-02
申请号：US12048748
申请日：2008-03-14
IPC分类号： G08B13/14
CPC分类号： H04B5/0012 , H04B5/0062 , H04B5/0087
摘要： A dynamic radio frequency (RF) front end includes an antenna array, a power amplifier structure, and a low noise amplifier structure. The power amplifier structure generates a plurality of outbound RF signals from an outbound RF signal and provides the plurality of outbound RF signals to the antenna array. Each of the plurality of outbound RF signals has a different transmit phase rotation. The low noise amplifier structure receives a plurality of inbound RF signals from the antenna array and outputs one of the plurality of inbound RF signals based on a favorable phase relationship with respect to the outbound RF signal. Each of the plurality of inbound RF signals has a different receive phase rotation.
摘要翻译： 动态射频（RF）前端包括天线阵列，功率放大器结构和低噪声放大器结构。 功率放大器结构从出站RF信号产生多个出站RF信号，并将多个出站RF信号提供给天线阵列。 多个出站RF信号中的每一个具有不同的发射相位旋转。 低噪声放大器结构从天线阵列接收多个入射RF信号，并且基于相对于出站RF信号的有利相位关系输出多个入站RF信号中的一个。 多个入站RF信号中的每一个具有不同的接收相位旋转。
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公开(公告)号：US09379785B2
公开(公告)日：2016-06-28
申请号：US12983454
申请日：2011-01-03
申请人： Amin Shameli , Aminghasem Safarian , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Franco De Flaviis
发明人： Amin Shameli , Aminghasem Safarian , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Franco De Flaviis
CPC分类号： H04B5/02 , H04B5/0031 , H04B5/0037 , H04B5/0062 , H04B5/0087 , H04L25/4904 , H04L27/02
摘要： A near field RFID system includes an RFID reader and an RFID tag. The RFID reader includes a transmit path and a receive path, wherein the transmit path includes: an encoding section coupled to convert data into encoded data; a digital to analog conversion module coupled to convert the encoded data into an analog encoded signal; a power amplifier coupled to amplify the analog encoded signal; and a plurality of coils coupled to generate a plurality of electromagnetic fields from the analog encoded signal. The RFID tag that includes: a coil coupled to generate a current and a recovered signal from at least one of the plurality of electromagnetic fields; a power recovery circuit coupled to generate a voltage from the current; and a data processing section coupled to process the recovered signal, wherein the data processing section is powered via the voltage.
摘要翻译： 近场RFID系统包括RFID读取器和RFID标签。 RFID读取器包括发送路径和接收路径，其中发送路径包括：耦合以将数据转换为编码数据的编码部分; 耦合到将所述编码数据转换为模拟编码信号的数模转换模块; 功率放大器，被耦合以放大所述模拟编码信号; 以及耦合以从所述模拟编码信号产生多个电磁场的多个线圈。 RFID标签包括：线圈，其被耦合以从多个电磁场中的至少一个产生电流和恢复的信号; 功率恢复电路，其耦合以从电流产生电压; 以及数据处理部分，其耦合以处理恢复的信号，其中所述数据处理部分经由所述电压供电。
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公开(公告)号：US08237566B2
公开(公告)日：2012-08-07
申请号：US13234632
申请日：2011-09-16
IPC分类号： G08B13/14
CPC分类号： G06K7/10198 , G06K7/0008 , G06K19/0724 , G06K19/073 , G06K19/07766 , H04B5/0012 , H04B5/0062 , H04B5/0087
摘要： A multi-mode RFID tag includes a power generating and signal detection module, a baseband processing module, a transmit section, a configurable coupling circuit, and an antenna section. In near field mode, the configurable coupling circuit is operable to couple the transmit section to a coil or inductor in the configurable coupling circuit to transmit an outbound transmit signal using electromagnetic or inductive coupling to an RFID reader. In far field mode, the configurable coupling circuit is operable to couple the transmit section to the antenna section, and the multi-mode RFID tag then utilizes a back-scattering RF technology to transmit the outbound transmit signal to RFID readers.
摘要翻译： 多模式RFID标签包括发电和信号检测模块，基带处理模块，发送部分，可配置耦合电路和天线部分。 在近场模式中，可配置耦合电路可操作以将发射部分耦合到可配置耦合电路中的线圈或电感器，以使用电磁耦合或电感耦合传输到RFID读取器的出站发射信号。 在远场模式下，可配置耦合电路可操作以将发射部分耦合到天线部分，然后多模式RFID标签利用反向散射RF技术将出站发射信号传输到RFID读取器。
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公开(公告)号：US08022825B2
公开(公告)日：2011-09-20
申请号：US12695169
申请日：2010-01-28
IPC分类号： G08B13/14
CPC分类号： G06K7/10198 , G06K7/0008 , G06K19/0724 , G06K19/073 , G06K19/07766 , H04B5/0012 , H04B5/0062 , H04B5/0087
摘要： A multi-mode RFID tag includes a power generating and signal detection module, a baseband processing module, a transmit section, a configurable coupling circuit, and an antenna section. In near field mode, the configurable coupling circuit is operable to couple the transmit section to a coil or inductor in the configurable coupling circuit to transmit an outbound transmit signal using electromagnetic or inductive coupling to an RFID reader. In far field mode, the configurable coupling circuit is operable to couple the transmit section to the antenna section, and the multi-mode RFID tag then utilizes a back-scattering RF technology to transmit the outbound transmit signal to RFID readers.
摘要翻译： 多模式RFID标签包括发电和信号检测模块，基带处理模块，发送部分，可配置耦合电路和天线部分。 在近场模式中，可配置耦合电路可操作以将发射部分耦合到可配置耦合电路中的线圈或电感器，以使用电磁耦合或电感耦合传输到RFID读取器的出站发射信号。 在远场模式下，可配置耦合电路可操作以将发射部分耦合到天线部分，然后多模式RFID标签利用反向散射RF技术将出站发射信号传输到RFID读取器。
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公开(公告)号：US20110111695A1
公开(公告)日：2011-05-12
申请号：US12983454
申请日：2011-01-03
申请人： Amin Shameli , Aminghasem Safarian , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Franco De Flaviis
发明人： Amin Shameli , Aminghasem Safarian , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Franco De Flaviis
IPC分类号： H04B5/00
CPC分类号： H04B5/02 , H04B5/0031 , H04B5/0037 , H04B5/0062 , H04B5/0087 , H04L25/4904 , H04L27/02
摘要： A near field RFID system includes an RFID reader and an RFID tag. The RFID reader includes a transmit path and a receive path, wherein the transmit path includes: an encoding section coupled to convert data into encoded data; a digital to analog conversion module coupled to convert the encoded data into an analog encoded signal; a power amplifier coupled to amplify the analog encoded signal; and a plurality of coils coupled to generate a plurality of electromagnetic fields from the analog encoded signal. The RFID tag that includes: a coil coupled to generate a current and a recovered signal from at least one of the plurality of electromagnetic fields; a power recovery circuit coupled to generate a voltage from the current; and a data processing section coupled to process the recovered signal, wherein the data processing section is powered via the voltage.
摘要翻译： 近场RFID系统包括RFID读取器和RFID标签。 RFID读取器包括发送路径和接收路径，其中发送路径包括：耦合以将数据转换为编码数据的编码部分; 耦合到将所述编码数据转换为模拟编码信号的数模转换模块; 功率放大器，被耦合以放大所述模拟编码信号; 以及耦合以从所述模拟编码信号产生多个电磁场的多个线圈。 RFID标签包括：线圈，其被耦合以从多个电磁场中的至少一个产生电流和恢复的信号; 功率恢复电路，其耦合以从电流产生电压; 以及数据处理部分，其耦合以处理恢复的信号，其中所述数据处理部分经由所述电压供电。
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公开(公告)号：US20080238621A1
公开(公告)日：2008-10-02
申请号：US11867763
申请日：2007-10-05
IPC分类号： H04B7/00
CPC分类号： H04B5/0012 , H04B5/0062 , H04B5/0087
摘要： A multi-mode RFID reader operates in both far field mode and near field mode. The multi-mode RFID reader includes a transmitter section, a receiver section, a transmit multiplexer and a receive multiplexer. Both the transmit multiplexer and the receive multiplexer are configurably coupled to a far field antenna structure and a near field coil structure. For far field operation, the transmit multiplexer provides an up-converted outbound signal to a far field antenna structure and the receive multiplexer provides an inbound signal to a receiver section. For near field operation, the transmit multiplexer provides an up-converted outbound signal to the near field coil structure and the receive multiplexer provides an inbound signal to the receiver section.
摘要翻译： 多模式RFID读取器在远场模式和近场模式下工作。 多模式RFID读取器包括发射器部分，接收器部分，发射多路复用器和接收多路复用器。 发射多路复用器和接收多路复用器都可配置地耦合到远场天线结构和近场线圈结构。 对于远场操作，发射多路复用器将向上转换的出站信号提供给远场天线结构，并且接收多路复用器向接收机部分提供入站信号。 对于近场操作，发射多路复用器向近场线圈结构提供上变频的出站信号，并且接收多路复用器向接收机部分提供入站信号。
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公开(公告)号：US20080009258A1
公开(公告)日：2008-01-10
申请号：US11711309
申请日：2007-02-27
摘要： A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要翻译： 用于消除接收路径中的阻塞信号的接收器架构包括用于接收和放大入站RF信号以产生放大入站信号的低噪声放大器，其中入站RF信号包括调制的RF信号和阻塞信号，以及取消 模块，用于基本上从放大的入站RF信号中消除阻塞信号并且基本上通过调制的RF信号。 消除模块通过产生表示阻塞信号的注入信号来消除阻塞信号，将阻塞信号与注入信号组合以产生误差信号，基于误差信号更新注入信号，并使用注入信号来取消阻塞 来自放大的入站RF信号的信号。
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