FMCW VCO closed loop linearizer
    1.
    发明授权
    FMCW VCO closed loop linearizer 失效
    FMCW VCO闭环线性化

    公开(公告)号:US5642081A

    公开(公告)日:1997-06-24

    申请号:US548428

    申请日:1995-10-26

    CPC classification number: G01S7/4008 H03B23/00 G01S13/34 H03C3/08

    Abstract: The present invention overcomes the problems discussed above by providing a linearizer apparatus for providing a linear ramp modulation for a voltage control oscillator (VCO), including voltage controlled oscillator means (VCO) having input and output terminals, and means for producing the output signal at its output terminal at the output frequency such that the output frequency corresponds to the voltage of a modulated tuning signal applied to the input terminal. A signal division means is coupled to the output of the VCO for producing a divided signal. A glass bulk acoustic delay means is coupled to the signal division means for producing a delayed signal. A first comparison signal generator means is coupled to the divided signal and the delayed signal for producing an IF signal which is proportional to the VCO output signal non-linearities. A reference oscillator means is provided for producing a reference signal. A second comparison signal generator means is coupled to the reference signal and the IF signal for producing an error signal. Finally, a summing means is coupled to a modulation waveform generator means and the error signal for producing a modulated tuning signal which is input to the VCO to frequency modulate the VCO.

    Abstract translation: 本发明通过提供一种用于为压控振荡器(VCO)提供线性斜坡调制的线性化装置克服了上述问题,该电压控制振荡器包括具有输入和输出端的压控振荡器装置(VCO),以及用于产生输出信号的装置 其输出端子处于输出频率,使得输出频率对应于施加到输入端子的调制调谐信号的电压。 信号分离装置耦合到VCO的输出端,以产生分频信号。 玻璃体声延迟装置耦合到信号分离装置,用于产生延迟信号。 第一比较信号发生器装置耦合到分频信号和延迟信号,用于产生与VCO输出信号非线性成比例的IF信号。 提供用于产生参考信号的参考振荡器装置。 第二比较信号发生器装置耦合到参考信号和IF信号以产生误差信号。 最后,求和装置耦合到调制波形发生器装置和用于产生调制调谐信号的误差信号,该调制调谐信号被输入到VCO以对VCO进行频率调制。

    Method, Apparatus, and System for Supplying Pulsed Current to a Load
    2.
    发明申请
    Method, Apparatus, and System for Supplying Pulsed Current to a Load 审中-公开
    用于向负载提供脉冲电流的方法,装置和系统

    公开(公告)号:US20120286691A1

    公开(公告)日:2012-11-15

    申请号:US13519251

    申请日:2010-12-21

    Inventor: Ronald D. Jesme

    CPC classification number: G06F1/26 H05B33/0818

    Abstract: Supplying pulsed current to a load involves repeatedly driving an electrical load between successive active and idle states via a regulator that includes a switched mode power supply. The regulator receives input current from a direct current power source and provides output current to at least an energy storage device in the idle states of the electrical load. The energy storage device is coupled to the load and the regulator. Output current is provided from both the regulator and the energy storage device to the electrical load in the active states of the electrical load. A storage capacity of the energy storage device is selected so that a duty cycle of the input current is greater than a duty cycle of the output current.

    Abstract translation: 向负载提供脉冲电流涉及经由包括开关模式电源的调节器重复地驱动连续有功和空闲状态之间的电负载。 调节器从直流电源接收输入电流,并在电负载的空闲状态下向至少一个能量存储装置提供输出电流。 能量存储装置耦合到负载和调节器。 输出电流由调节器和储能装置提供给电负载的有效状态下的电负载。 选择能量存储装置的存储容量,使得输入电流的占空比大于输出电流的占空比。

    INTERACTIVE POLARIZATION-PRESERVING PROJECTION DISPLAY
    4.
    发明申请
    INTERACTIVE POLARIZATION-PRESERVING PROJECTION DISPLAY 有权
    互动极化保存投影显示

    公开(公告)号:US20130222237A1

    公开(公告)日:2013-08-29

    申请号:US13881397

    申请日:2011-10-28

    CPC classification number: G06F3/0308 G02B27/286 G06F3/0425

    Abstract: The disclosure generally relates to optical devices, such as interactive displays, and in particular to interactive projection displays having passive input devices. The present disclosure also provides a passive interactive input device having the ability to overcome problematic ambient interference signals in an interactive display, such as an interactive projection display.

    Abstract translation: 本发明一般涉及诸如交互式显示器的光学装置,特别涉及具有无源输入装置的交互式投影显示器。 本公开还提供了一种无源交互式输入设备,其具有克服交互式显示器(例如交互式投影显示器)中的有问题的环境干扰信号的能力。

    RFID TAG ANTENNA WITH CAPACITIVELY OR INDUCTIVELY COUPLED TUNING COMPONENT
    6.
    发明申请
    RFID TAG ANTENNA WITH CAPACITIVELY OR INDUCTIVELY COUPLED TUNING COMPONENT 审中-公开
    RFID标签天线,具有电容或电感耦合调谐元件

    公开(公告)号:US20100123553A1

    公开(公告)日:2010-05-20

    申请号:US12621278

    申请日:2009-11-18

    CPC classification number: H01Q9/16 H01Q1/2208 H01Q7/00 H01Q9/30 H01Q19/005

    Abstract: This disclosure describes RFID tags designed to provide improved impedance matching capabilities. An RFID tag may include a radiating component and a tuning component located on different layers of the RFID tag. The radiating component and tuning component are located proximate to one another to provide a proximate coupling (e.g., an inductive and/or capacitive coupling). In one embodiment, at least a portion of the radiating component of a first layer overlaps at least a portion of the tuning component of a second layer, resulting in a proximate coupling. The tuning component may be used for tuning the antenna, e.g., matching an impedance of the radiating element and an IC chip electrically connected to the tuning component. Because the radiating element does not have to be designed to match impedances, the radiating element may be designed to provide better gain, polarization purity, larger radar cross section or other antenna parameters.

    Abstract translation: 本公开描述了设计用于提供改进的阻抗匹配能力的RFID标签。 RFID标签可以包括位于RFID标签的不同层上的辐射部件和调谐部件。 辐射部件和调谐部件彼此靠近设置以提供近端耦合(例如,电感和/或电容耦合)。 在一个实施例中,第一层的辐射部件的至少一部分与第二层的调谐部件的至少一部分重叠,导致紧密耦合。 调谐组件可用于调谐天线,例如匹配辐射元件的阻抗和与调谐组件电连接的IC芯片。 因为辐射元件不必被设计成匹配阻抗,所以辐射元件可以设计成提供更好的增益,极化纯度,更大的雷达截面或其他天线参数。

    Passport reader for processing a passport having an RFID element
    7.
    发明授权
    Passport reader for processing a passport having an RFID element 有权
    护照读卡器,用于处理具有RFID元件的护照

    公开(公告)号:US07591415B2

    公开(公告)日:2009-09-22

    申请号:US10953200

    申请日:2004-09-28

    Inventor: Ronald D. Jesme

    CPC classification number: H01Q1/2216 G06K7/10336 H01Q1/22

    Abstract: A passport reader for processing a passport having an RFID element associated therewith. A exemplary embodiment of the invention provides a passport reader for processing a passport having an RFID element associated therewith including an RFID interrogation source for interrogating and obtaining information from the RFID element associated with a passport; and an antenna to transmit signals between an RFID element and the RFID interrogation source.

    Abstract translation: 一种用于处理具有与其相关联的RFID元件的护照的护照读取器。 本发明的示例性实施例提供了一种用于处理具有与其相关联的RFID元件的护照的护照读取器,其包括用于询问并从与护照相关联的RFID元件获取信息的RFID询问源; 以及用于在RFID元件和RFID询问源之间传输信号的天线。

    Device for verifying a location and functionality of a radio-frequency identification (RFID) tag on an item
    8.
    发明申请
    Device for verifying a location and functionality of a radio-frequency identification (RFID) tag on an item 审中-公开
    用于验证物品上的射频识别(RFID)标签的位置和功能的装置

    公开(公告)号:US20090167502A1

    公开(公告)日:2009-07-02

    申请号:US12006284

    申请日:2007-12-31

    CPC classification number: H04Q9/00 G06K7/0008 H04Q2209/47 H04Q2209/75

    Abstract: A Radio-Frequency Identification (RFID) system verifies proper placement and functionality of RFID tags with respect to particular end-use RFID systems at the time the RFID tag is applied to an item but before the item is deployed. A device for verifying a location and functionality of an RFID tag on an item includes an item holder, a power coupling mechanism attached to the item holder, and an RFID reader electrically connected to the power coupling mechanism. The power coupling mechanism creates a near field for transmission of read or write commands from the RFID reader to an RFID tag on an item placed on the item holder to verify the location and functionality of the RFID tag as applied to the item with respect to a near-field coupling mechanism of a particular end-use RFID system. The device may include additional power coupling mechanisms for testing the functionality of the tag.

    Abstract translation: 射频识别(RFID)系统在将RFID标签应用于物品时,但在物品部署之前,验证RFID标签相对于特定终端RFID系统的正确放置和功能。 用于验证物品上的RFID标签的位置和功能的装置包括物品保持器,附接到物品保持器的动力耦合机构和电连接到动力耦合机构的RFID读取器。 功率耦合机构创建近场以将读取或写入命令从RFID读取器传输到放置在物品保持器上的物品上的RFID标签,以验证RFID标签在位置和功能方面的应用于相对于物品的位置和功能 特定终端RFID系统的近场耦合机制。 该装置可以包括用于测试标签的功能的附加功率耦合机构。

    System for detecting radio-frequency identification tags
    10.
    发明授权
    System for detecting radio-frequency identification tags 有权
    用于检测射频识别标签的系统

    公开(公告)号:US07119692B2

    公开(公告)日:2006-10-10

    申请号:US10705677

    申请日:2003-11-10

    Abstract: Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the exit of the protected area. RFID tags are attached to the articles to be protected. Each tag includes information that uniquely identifies the article to which it is affixed and status information as to whether the articles removal from the facility is authorized. The RF reader outputs RF signals through the antennas to create electromagnetic fields within the interrogation corridors. The reader outputs RF power from a single port to the multiple antennas via a splitter/combiner. In this way, a single RF reader with only one transmitter/receiver port simultaneously interrogates multiple antennas. A variety of techniques are described by which the reader can detect the removal of an unauthorized article.

    Abstract translation: 公开了用于检测射频识别(RFID)标签的技术。 例如,描述了一种检测来自受保护设施的未经授权的物品移除的出口控制系统。 设置一系列天线以产生位于保护区出口附近的询问走廊。 RFID标签附着在要保护的物品上。 每个标签包括唯一标识其所附文章的信息以及关于从该设施移除的文章是否被授权的状态信息。 RF读取器通过天线输出RF信号,以在询问走廊内创建电磁场。 读取器通过分离器/组合器将单个端口的RF功率输出到多个天线。 以这种方式,只有一个发射机/接收机端口的单个RF读取器同时询问多个天线。 描述了各种技术,读者可以通过该技术检测未经授权的文章的移除。

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