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1. 发明授权

US07205953B2 Directional antenna array 有权
标题翻译：定向天线阵列
公开(公告)号：US07205953B2
公开(公告)日：2007-04-17
申请号：US10661652
申请日：2003-09-12
申请人： Richard T. Knadle, Jr. , Mark William Duron , Hal Charych , Henry Grossfeld , Raj Bridgelall
发明人： Richard T. Knadle, Jr. , Mark William Duron , Hal Charych , Henry Grossfeld , Raj Bridgelall
IPC分类号： H01Q11/10
CPC分类号： H01Q9/285 , H01Q19/30
摘要： A directional antenna array is provided that includes a driven element and a first parasitic element separated from the driven element with the first parasitic element and/or the driven element having a width that is greater than about one-half a percent (0.5%) of an free-space wavelength of the directional antenna array. Alternatively or in conjunction, the directional antenna array includes a balun structure that is configured to couple the driven element to at least one of an electromagnetic energy source and an electromagnetic sink, and the balun structure includes a dipole structure, a first feed point extending from the dipole structure and a second feed point extending from the first parasitic element.
摘要翻译：提供了一种定向天线阵列，其包括被驱动元件和与被驱动元件分离的第一寄生元件，第一寄生元件和/或被驱动元件的宽度大于所述驱动元件的大约百分之零点五定向天线阵列的自由空间波长。替代地或结合地，定向天线阵列包括平衡 - 不平衡转换器结构，其被配置为将驱动元件耦合到电磁能量源和电磁槽中的至少一个，并且平衡 - 不平衡变换器结构包括偶极结构，第一馈电点从所述偶极结构和从所述第一寄生元件延伸的第二馈电点。

2. 发明授权

US07423606B2 Multi-frequency RFID apparatus and methods of reading RFID tags 有权
标题翻译：多频RFID设备和阅读RFID标签的方法
公开(公告)号：US07423606B2
公开(公告)日：2008-09-09
申请号：US10957529
申请日：2004-09-30
申请人： Richard T. Knadle, Jr. , Hal Charych , Mark William Duron , Raj Bridgelall
发明人： Richard T. Knadle, Jr. , Hal Charych , Mark William Duron , Raj Bridgelall
IPC分类号： H01Q5/02 , H04Q5/22
CPC分类号： H01Q1/2216 , G06K7/0008 , H01Q1/22 , H01Q21/28 , H01Q21/30
摘要： A portable/handheld device is provided having a processing module configured to selectively operate a reading mode selected from a far-field mode and a near-field mode, and a directional antenna array coupled to the processing module. The directional antenna array includes a first antenna element configured to radiate electromagnetic (EM) radiation in a far-field, and a second antenna element coupled to the first antenna element. The second antenna element is configured to radiate EM radiation in a near-field. The second antenna element includes an antenna transducer configured to selectively cancel far-field EM radiation from the first antenna element. A method of reading inductively coupled radio frequency identification (RFID) tags is also provided having the steps of scanning at least one frequency band to detect a RFID tag, and selectively radiating one of a near-field electromagnetic (EM) field and a far-field EM field based on the detected RFID tag.
摘要翻译：提供了一种便携式/手持式装置，其具有被配置为选择性地操作从远场模式和近场模式选择的读取模式的处理模块以及耦合到处理模块的定向天线阵列。定向天线阵列包括被配置为辐射远场中的电磁（EM）辐射的第一天线元件和耦合到第一天线元件的第二天线元件。第二天线元件被配置为在近场辐射EM辐射。第二天线元件包括被配置为选择性地抵消来自第一天线元件的远场EM辐射的天线换能器。还提供了一种读取电感耦合射频识别（RFID）标签的方法，其具有扫描至少一个频带以检测RFID标签的步骤，并且选择性地辐射近场电磁场（EM）场和远场识别基于检测到的RFID标签的场EM场。

3. 发明授权

US07075437B2 RFID relay device and methods for relaying and RFID signal 失效
标题翻译： RFID中继装置及中继方法及RFID信号
公开(公告)号：US07075437B2
公开(公告)日：2006-07-11
申请号：US10803191
申请日：2004-03-16
申请人： Raj Bridgelall , Mark Duron , Richard T. Knadle, Jr. , Hal Charych , Avi Nudelman
发明人： Raj Bridgelall , Mark Duron , Richard T. Knadle, Jr. , Hal Charych , Avi Nudelman
IPC分类号： G08B13/14
CPC分类号： H01Q1/2208 , B65D71/0088 , B65D2203/10 , G06K7/10019 , G06K7/10336 , G06K19/07756 , G06K19/07796 , G08B13/2417 , G08B13/2445 , G08B13/2474 , G08B13/2485 , H01Q9/285 , H01Q21/205
摘要： An RFID relay device for an RFID transponder and methods are provided for relaying an RFID signal. The RFID relay device comprises at least two antenna and a transmission line coupling the at least two antenna. In addition to the two antenna and the transmission line, the RFID relay device comprises an impedance adjusting circuit coupled to the transmission line and configured for coupling to the RFID transponder.
摘要翻译：用于RFID应答器的RFID中继装置和方法被提供用于中继RFID信号。 RFID中继设备包括至少两个天线和耦合至少两个天线的传输线。除了两个天线和传输线之外，RFID中继装置包括耦合到传输线并被配置为耦合到RFID应答器的阻抗调节电路。

4. 发明授权

US07170412B2 Angle of position object location system and method 有权
标题翻译：位置对象定位系统和方法的角度
公开(公告)号：US07170412B2
公开(公告)日：2007-01-30
申请号：US10931476
申请日：2004-08-31
申请人： Michael Knox , Raj Bridgelall , Mark William Duron , Richard T. Knadle, Jr. , James Joseph Bender
发明人： Michael Knox , Raj Bridgelall , Mark William Duron , Richard T. Knadle, Jr. , James Joseph Bender
IPC分类号： G08B13/14
CPC分类号： G01S13/84 , G01S3/32 , G01S5/04 , G01S5/12 , G01S13/825 , G01V15/00
摘要： An object location system and method is provided for locating objects. The system includes an RFID reader, an angle calculator, and a distance calculator to determine which of a plurality of zones an object is located in or passing through. An RFID tag is affixed with the object that is to be located. The RFID reader transmits signals to the RFID tag and receives backscatter-modulated signals from the RFID tag at one or more RFID antennas. From those received signals, the angle calculator determines an angle of position of the RFID tag relative to the RFID antenna. From the angle of position the zone in which the object is located is determined.
摘要翻译：提供了一种用于定位对象的物体定位系统和方法。该系统包括RFID读取器，角度计算器和距离计算器，以确定物体位于或经过的多个区域中的哪个区域。将RFID标签贴在要被放置的物体上。 RFID读取器将信号发送到RFID标签，并在一个或多个RFID天线处从RFID标签接收反向散射调制信号。从这些接收到的信号中，角度计算器确定RFID标签相对于RFID天线的位置角度。从位置的角度确定对象所在的区域。

5. 发明授权

US07259676B2 Mode-diversity RFAID tag and interrogator system and method for identifying an RFAID transponder 有权
标题翻译：用于识别RFAID转发器的模式分集RFAID标签和询问器系统和方法
公开(公告)号：US07259676B2
公开(公告)日：2007-08-21
申请号：US11142054
申请日：2005-05-31
申请人： Richard T. Knadle, Jr. , Mark William Duron
发明人： Richard T. Knadle, Jr. , Mark William Duron
IPC分类号： G08B13/14
CPC分类号： G06K7/02 , G06K7/0004 , G06K7/0008 , G06K19/06 , G06K19/0723
摘要： Methods and apparatus are provided for mode diversity radio frequency identification (RFAID). The apparatus comprises a first transducer configured to receive a first radio frequency (RF) signal, a second transducer configured to receive an acoustic signal, and an impedance modulator coupled to the first transducer and the second transducer and configured to emit a signal identifying an RFAID tag when the first transducer receives the first RF signal and/or the second transducer receives the acoustic signal. The method comprises transmitting an RF signal and an acoustic frequency signal, and detecting a first modulated signal indicating an RFAID transponder. The first modulated signal is based on one of the RF signal and the acoustic signal.
摘要翻译：提供了用于模式分集射频识别（RFAID）的方法和装置。该装置包括：第一传感器，被配置为接收第一射频信号，被配置为接收声信号的第二传感器和耦合到第一换能器和第二换能器的阻抗调制器，并被配置为发射识别RFAID的信号当第一传感器接收到第一RF信号和/或第二换能器接收到声信号时，标签。该方法包括发送RF信号和声频信号，以及检测指示RFAID转发器的第一调制信号。第一调制信号基于RF信号和声信号之一。

6. 发明授权

US08514079B2 Frequency selective surface aids to the operation of RFID products 有权
标题翻译：频率选择表面有助于RFID产品的运行
公开(公告)号：US08514079B2
公开(公告)日：2013-08-20
申请号：US12822678
申请日：2010-06-24
申请人： Richard T. Knadle, Jr. , Mark Duron
发明人： Richard T. Knadle, Jr. , Mark Duron
IPC分类号： G08B13/14
CPC分类号： G06K7/0008 , G06K7/10346 , G06K7/10435 , G06K17/0029 , H01Q1/2208 , H01Q15/0013
摘要： The present invention is directed to systems that use frequency selective surfaces (FSS) to aid in the operation of radio frequency identification (RFID) devices and products. In one embodiment, a system for interrogating radio frequency identification (RFID) tags includes a conveyor belt and an RFID reader. The conveyor belt has a first surface and a second surface. The first surface is configured to receive an item to which an RFID tag is affixed and the second surface is configured to slide on a metal slide plate. The RFID reader is configured to transmit instructions embodied in a radio frequency (RF) signal to the RFID tag, wherein the metal slide plate is positioned between the RFID reader and the RFID tag and comprises a frequency selective surface that is substantially transparent to the RF signal.
摘要翻译：本发明涉及使用频率选择表面（FSS）来帮助射频识别（RFID）设备和产品的操作的系统。在一个实施例中，用于询问射频识别（RFID）标签的系统包括传送带和RFID读取器。传送带具有第一表面和第二表面。第一表面被配置为接收固定有RFID标签的物品，并且第二表面被配置为在金属滑板上滑动。 RFID读取器被配置为将射频（RF）信号中包含的指令传送到RFID标签，其中金属滑板位于RFID读取器和RFID标签之间，并且包括对RF基本透明的频率选择表面信号。

7. 发明授权

US08258954B2 Frequency selective surface aids to the operation of RFID products 有权
标题翻译：频率选择表面有助于RFID产品的运行
公开(公告)号：US08258954B2
公开(公告)日：2012-09-04
申请号：US12912430
申请日：2010-10-26
申请人： Richard T. Knadle, Jr. , Mark Duron
发明人： Richard T. Knadle, Jr. , Mark Duron
IPC分类号： G08B13/14
CPC分类号： G06K7/0008 , G06K7/10346 , G06K7/10435 , G06K17/0029 , H01Q1/2208 , H01Q15/0013
摘要： The present invention is directed to systems that use frequency selective surfaces (FSS) to aid in the operation of radio frequency identification (RFID) devices and products. In one embodiment, a system for interrogating radio frequency identification (RFID) tags includes a conveyor belt and an RFID reader. The conveyor belt has a first surface and a second surface. The first surface is configured to receive an item to which an RFID tag is affixed and the second surface is configured to slide on a metal slide plate. The RFID reader is configured to transmit instructions embodied in a radio frequency (RF) signal to the RFID tag, wherein the metal slide plate is positioned between the RFID reader and the RFID tag and comprises a frequency selective surface that is substantially transparent to the RF signal.
摘要翻译：本发明涉及使用频率选择表面（FSS）来帮助射频识别（RFID）设备和产品的操作的系统。在一个实施例中，用于询问射频识别（RFID）标签的系统包括传送带和RFID读取器。传送带具有第一表面和第二表面。第一表面被配置为接收固定有RFID标签的物品，并且第二表面被配置为在金属滑板上滑动。 RFID读取器被配置为将射频（RF）信号中包含的指令传送到RFID标签，其中金属滑板位于RFID读取器和RFID标签之间，并且包括对RF基本透明的频率选择表面信号。

8. 发明授权

US07576657B2 Single frequency low power RFID device 有权
标题翻译：单频低功率RFID设备
公开(公告)号：US07576657B2
公开(公告)日：2009-08-18
申请号：US11529733
申请日：2006-09-29
申请人： Mark Duron , James Giebel , David Goren , Thomas Wulff , Richard T. Knadle, Jr. , Christopher Brock
发明人： Mark Duron , James Giebel , David Goren , Thomas Wulff , Richard T. Knadle, Jr. , Christopher Brock
IPC分类号： G08B13/14
CPC分类号： G06K7/0008
摘要： Methods, systems, and apparatuses for a reader transceiver circuit are described. The reader transceiver circuit incorporates a frequency generator, such as a surface acoustic wave (SAW) oscillator. A reader incorporating the reader transceiver circuit is configured to read a tag at very close range, including while being in contact with the tag. The transceiver can be coupled to various host devices in a variety of ways, including being located in a RFID reader (e.g., mobile or fixed position), a computing device, a barcode reader, etc. The transceiver can be located in an RFID module that is attachable to a host device, can be configured in the host device, or can be configured to communicate with the host device over a distance. The RFID module may include one or more antennas, such as a first antenna configured to receive a magnetic field component of an electromagnetic wave and a second antenna configured to receive an electric field component of an electromagnetic wave. The RFID module may include a detector that is configured to determine if the RFID module is positioned in proximity to an object, such as a RFID tag. The detector may operate as a trigger for the RFID module, to enable or trigger a function of the RFID module.
摘要翻译：描述了用于读取器收发器电路的方法，系统和装置。读取器收发器电路包括频率发生器，例如表面声波（SAW）振荡器。包括读取器收发器电路的读取器被配置为在非常接近的范围内读取标签，包括在与标签接触的同时。收发器可以以各种方式耦合到各种主机设备，包括位于RFID读取器（例如，移动或固定位置），计算设备，条形码读取器等中。收发器可以位于RFID模块中可附接到主机设备，可以在主机设备中配置，或者可以被配置为在一定距离上与主机设备进行通信。 RFID模块可以包括一个或多个天线，诸如被配置为接收电磁波的磁场分量的第一天线和被配置为接收电磁波的电场分量的第二天线。 RFID模块可以包括被配置为确定RFID模块是否位于诸如RFID标签之类的物体附近的检测器。检测器可以用作RFID模块的触发器，以实现或触发RFID模块的功能。

9. 发明授权

US07551140B2 Low return loss rugged RFID antenna 有权
标题翻译：低回波损耗坚固的RFID天线
公开(公告)号：US07551140B2
公开(公告)日：2009-06-23
申请号：US11265143
申请日：2005-11-03
申请人： Richard T. Knadle, Jr. , Mark Duron
发明人： Richard T. Knadle, Jr. , Mark Duron
IPC分类号： H01Q1/38 , G08B13/14
CPC分类号： G06K7/0008 , B66F9/0755 , G06K7/10316 , H01Q1/2216 , H01Q9/0435
摘要： Methods, systems, and apparatuses for RFID devices, such as reader antennas, are described. A reader antenna includes a quadrature hybrid coupler, a termination element, and an antenna, such as a patch antenna. The quadrature hybrid coupler has first, second, third, and fourth ports. The first port receives an input radio frequency RF signal. The second port outputs a first RF output signal. The third port outputs a second RF output signal. The second RF output signal is shifted in phase by 90 degrees relative to the first RF output signal. The fourth port is coupled to the termination element. The patch antenna has a first point coupled to the first RF output signal and a second point coupled to the second RF output signal. The patch antenna radiates a circularly polarized RF signal due to the received first and second RF output signals. The circularly polarized RF signal may be used to interrogate tags. Furthermore, the reader antenna is integrated into a ruggedized structure that provides environmental protection for the antenna, including providing shock absorption for impacts to the antenna.
摘要翻译：描述了诸如读取器天线的RFID设备的方法，系统和设备。读取器天线包括正交混合耦合器，终端元件和天线，例如贴片天线。正交混合耦合器具有第一，第二，第三和第四端口。第一端口接收输入射频RF信号。第二端口输出第一RF输出信号。第三端口输出第二RF输出信号。第二RF输出信号相对于第一RF输出信号相位偏移90度。第四端口耦合到终端元件。贴片天线具有耦合到第一RF输出信号的第一点和耦合到第二RF输出信号的第二点。由于接收的第一和第二RF输出信号，贴片天线辐射圆偏振的RF信号。圆偏振RF信号可用于询问标签。此外，读取器天线被集成到为天线提供环境保护的加固结构中，包括为对天线的冲击提供减震。

10. 发明授权

US07884718B2 Frequency selective surface aids to the operation of RFID products 有权
标题翻译：频率选择表面有助于RFID产品的运行
公开(公告)号：US07884718B2
公开(公告)日：2011-02-08
申请号：US11641782
申请日：2006-12-20
申请人： Richard T. Knadle, Jr. , Mark Duron
发明人： Richard T. Knadle, Jr. , Mark Duron
IPC分类号： G08B13/14
CPC分类号： G06K7/0008 , G06K7/10346 , G06K7/10435 , G06K17/0029 , H01Q1/2208 , H01Q15/0013
摘要： The present invention is directed to systems that use frequency selective surfaces (FSS) to aid in the operation of radio frequency identification (RFID) devices and products. In one embodiment, a system for interrogating radio frequency identification (RFID) tags includes a conveyor belt and an RFID reader. The conveyor belt has a first surface and a second surface. The first surface is configured to receive an item to which an RFID tag is affixed and the second surface is configured to slide on a metal slide plate. The RFID reader is configured to transmit instructions embodied in a radio frequency (RF) signal to the RFID tag, wherein the metal slide plate is positioned between the RFID reader and the RFID tag and comprises a frequency selective surface that is substantially transparent to the RF signal.
摘要翻译：本发明涉及使用频率选择表面（FSS）来帮助射频识别（RFID）设备和产品的操作的系统。在一个实施例中，用于询问射频识别（RFID）标签的系统包括传送带和RFID读取器。传送带具有第一表面和第二表面。第一表面被配置为接收固定有RFID标签的物品，并且第二表面被配置为在金属滑板上滑动。 RFID读取器被配置为将射频（RF）信号中包含的指令传送到RFID标签，其中金属滑板位于RFID读取器和RFID标签之间，并且包括对RF基本透明的频率选择表面信号。

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