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343 条记录 (耗时 0.021 秒)

    LMS adaptive loop module
    51.
    发明授权
    LMS adaptive loop module 失效
    LMS自适应环路模块

    公开(公告)号：US4584583A

    公开(公告)日：1986-04-22

    申请号：US509576

    申请日：1983-06-30

    申请人： Paul S. Dennis, Jr. ,  Anthony M. Kowalski ,  Michael Weiner

    发明人： Paul S. Dennis, Jr. ,  Anthony M. Kowalski ,  Michael Weiner

    IPC分类号： H04B1/12 ,  G01S3/16 ,  G01S3/28

    CPC分类号： H04B1/123

    摘要： An LMS adaptive control loop module for reducing the effects of received interference includes a single antenna coupled to a first hybrid for generating a reference channel and an auxiliary channel. The auxiliary channel provides I/Q signals from a second hybrid and I/Q drive signals from I/Q correlation multipliers which are used to weight the I/Q signals from said second hybrid. The weighted signals and the reference channel signals are combined and provide an output.

    摘要翻译： 用于减少接收到的干扰的影响的LMS自适应控制环模块包括耦合到第一混合器的单个天线，用于产生参考信道和辅助信道。 辅助通道提供来自I / Q相关乘法器的第二混合信号和I / Q驱动信号的I / Q信号，其用于对来自所述第二混合器的I / Q信号进行加权。 加权信号和参考信道信号被组合并提供输出。

    Multiple frequency side lobe interference rejector
    52.
    发明授权
    Multiple frequency side lobe interference rejector 失效
    多频旁瓣干扰放电器

    公开(公告)号：US4533917A

    公开(公告)日：1985-08-06

    申请号：US593151

    申请日：1984-03-26

    申请人： John C. Reed

    发明人： John C. Reed

    IPC分类号： G01S13/76 ,  G01S3/16 ,  G01S3/28

    CPC分类号： G01S13/762

    摘要： A transceiver, such as a radar transponder, for receiving signals, converting the frequency of the input signals to a digital address and storing a signal representative of the amplitude of the input signal in a bin determined by the address. If the current amplitude exceeds a predetermined relationship with the stored amplitude a response is transmitted and if the current amplitude exceeds the stored amplitude the current amplitude is stored.

    摘要翻译： 用于接收信号的收发器，例如雷达应答器，将输入信号的频率转换为数字地址，并将表示输入信号的幅度的信号存储在由地址确定的存储区中。 如果当前振幅超过与所存储的振幅的预定关系，则响应被发送，并且如果电流幅度超过存储的振幅，则存储电流幅度。

    Asset location and management system with distributed processing
    54.
    发明授权
    Asset location and management system with distributed processing 有权

    公开(公告)号：US10942251B2

    公开(公告)日：2021-03-09

    申请号：US16037360

    申请日：2018-07-17

    申请人： CloudLeaf, Inc.

    发明人： Raghavendra Kulkarni ,  Sharath Narahari ,  Ravindar Roopreddy

    IPC分类号： G01S5/14 ,  G06Q10/08 ,  H04W64/00 ,  G01S5/04 ,  G01S3/16 ,  G06Q10/10 ,  H04W4/029 ,  H04W4/021 ,  H04W4/02

    摘要： A system for managing data related to at least one leaf node device, the system including a location processing engine located on a server that is remote from the at least one leaf node device; at least one point of interest (POI) device for collecting data relating to at least one leaf node device and transmitting the collected data with a timestamp using Bluetooth Low Energy (BLE); at least one reader node device for receiving the collected data from the point of interest (POI) device using BLE and transmitting the collected data to the location processing engine; and a database of the known locations of POI devices, wherein the known locations are used as a basis for determining the location of the at least one leaf node device that communicated with the POI device.

    Space time interleaved matched-filters
    55.
    发明授权
    Space time interleaved matched-filters 有权

    公开(公告)号：US09903933B2

    公开(公告)日：2018-02-27

    申请号：US14843346

    申请日：2015-09-02

    申请人： RAYTHEON COMPANY

    发明人： Ian S. Robinson ,  Bradley A. Flanders

    IPC分类号： G01S3/16 ,  G01S3/28 ,  G01S3/32

    CPC分类号： G01S3/32

    摘要： A system for determining a direction for an electromagnetic signal. The system includes a receiving array antenna, including a plurality of antenna elements, each antenna element having a position in the receiving array antenna; a digitizer configured to receive an analog signal from each of the antenna elements, and to sample and digitize each of the analog signals to form a sequence of digitized samples from each of the analog signals; and a processing unit. The processing unit is configured to receive the sequences of sample values from the digitizer; and, for each direction of a plurality of hypothesized directions: combine the sample values from the plurality of antenna elements to form a single time record; fit the single time record with a combination of one or more functions of time; and identify a direction at which a measure of the magnitude of the linear combination is greatest.

    Multiband 40 degree split beam antenna for wireless network
    58.
    发明授权
    Multiband 40 degree split beam antenna for wireless network 有权
    用于无线网络的多频段40度分束天线

    公开(公告)号：US09472845B2

    公开(公告)日：2016-10-18

    申请号：US13715449

    申请日：2012-12-14

    申请人： Intel Corporation

    发明人： Anthony Teillet

    IPC分类号： G01S3/16 ,  H01Q3/38 ,  H01Q1/24 ,  H01Q3/40 ,  H01Q21/06 ,  H01Q25/00

    CPC分类号： H01Q3/38 ,  H01Q1/246 ,  H01Q3/40 ,  H01Q21/061 ,  H01Q25/00

    摘要： A compact multiband 40 degree split beam antenna system for a wireless network is disclosed. Each band employs a 3 column array with a special 3 output feed network. The 3 output feed network employs either a broadband 90 degree hybrid coupler with a 180 degrees splitter, or 2 broadband 90 degree hybrid couplers. The arrays employ dipole antenna elements, patch antenna elements, or a combination of both types. The antenna may exhibit 35 to 40 degrees horizontal beamwidth.

    摘要翻译： 公开了一种用于无线网络的紧凑型多频带40度分离波束天线系统。 每个频段采用一个3列阵列，带有特殊的3输出馈电网络。 3输出馈电网络采用宽带90度混合耦合器，180度分离器或2宽带90度混合耦合器。 阵列采用偶极天线元件，贴片天线元件或两种类型的组合。 天线可以呈现35到40度的水平波束宽度。

    System and method of estimating true bearings of radio frequency identification (RFID) tags associated with items located directly underneath an overhead antenna array in a controlled area
    59.
    发明授权
    System and method of estimating true bearings of radio frequency identification (RFID) tags associated with items located directly underneath an overhead antenna array in a controlled area 有权
    估计与受控区域内直接位于架空天线阵列下方的物品相关联的射频识别（RFID）标签的真实轴承的系统和方法

    公开(公告)号：US09361494B2

    公开(公告)日：2016-06-07

    申请号：US14274141

    申请日：2014-05-09

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Charles B Swope ,  Antonio Faraone ,  Alexander M Jacques

    IPC分类号： G01S13/75 ,  G06K7/10 ,  G01S13/82 ,  G01S3/46 ,  G01S3/16

    CPC分类号： G06K7/10415 ,  G01S3/16 ,  G01S3/46 ,  G01S13/75 ,  G01S13/751 ,  G01S13/825 ,  G06K7/10099 ,  G06K7/10128 ,  G06K7/10366

    摘要： An RFID tag reading system and method estimate true bearings of RFID tags associated with items located in a scan zone directly underneath an overhead array of antenna elements. A controller energizes a plurality of diametrically opposite antenna elements to yield electric fields having polarizations, and switches each antenna element between mutually orthogonal polarizations. A primary transmit beam and a primary receive beam are steered at a primary steering angle over the scan zone, and a plurality of secondary receive beams are steered over the scan zone at different secondary steering angles that are offset from the primary steering angle by receiving secondary receive signals from each tag, and by processing the secondary receive signals to estimate a true bearing for each tag.

    摘要翻译： RFID标签读取系统和方法估计与位于天线元件的顶部阵列下方的扫描区域中的物品相关联的RFID标签的真实轴承。 控制器激励多个径向相对的天线元件以产生具有偏振的电场，并且在相互正交的极化之间切换每个天线元件。 主扫描区和主接收光束以扫描区域上的主要转向角转向，并且多个次级接收光束在不同的辅助转向角度的扫描区域上被转向，通过接收次级 从每个标签接收信号，并通过处理次要接收信号来估计每个标签的真实方位。