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    • 81. 发明申请
    • DIRECTION FINDING USING SIGNAL POWER
    • 使用信号功率的方向寻找
    • WO2016124898A1
    • 2016-08-11
    • PCT/GB2016/050216
    • 2016-02-01
    • CRFS LIMITED
    • MASSARELLA, AlistairTIMSON, DanielALEXANDER, Keith
    • G01S3/74
    • G01S3/74G01S3/043G01S3/26G01S3/48G01S3/54
    • A method of determining incident angles of Radio Frequency, RF, signals received by an antenna array comprising a plurality of antennae is described. The method comprises generating a plurality of direction finding, DF, signals based on antenna signals received from the antenna array, wherein each DF signal corresponds to a respective antenna array element and each antenna array element corresponds to one or more antennae. A plurality of DF spectra are then generated, each DF spectrum corresponding to a respective DF signal and comprising measured values of signal power at two or more given respective frequencies. An incident signal angle is calculated for each given frequency, based on the measured values of power at the frequency, the configuration of the antennae in the antenna array and antenna gain patterns corresponding to the antenna array elements.
    • 描述了确定由包括多个天线的天线阵列接收的射频,RF信号的入射角的方法。 该方法包括基于从天线阵列接收的天线信号产生多个方向发现DF信号,其中每个DF信号对应于相应的天线阵列元件,并且每个天线阵列元件对应于一个或多个天线。 然后产生多个DF频谱,每个DF频谱对应于相应的DF信号,并且包括在两个或更多给定相应频率处的信号功率的测量值。 基于频率处的功率的测量值,天线阵列中的天线的配置和对应于天线阵列元件的天线增益模式,为每个给定频率计算入射信号角。
    • 85. 发明申请
    • DIRECTION FINDING METHOD AND DEVICE
    • 方向寻找方法和设备
    • WO2009147662A1
    • 2009-12-10
    • PCT/IL2009/000542
    • 2009-06-01
    • HISEP TECHNOLOGY LTD.VERED, UriERAD, YarivVERED, Gad
    • VERED, UriERAD, YarivVERED, Gad
    • G01S3/20
    • G01S3/20G01S3/043H01Q25/02
    • The invention relates to a method for determining whether a target is within a direction sector of interest of a direction finder, which comprises: (a) predefining said sector of interest as a specific threshold difference between an R reference value and an N null value; (b) providing at least two antennas arranged in a broad-side configuration within the direction finder; (c) generating an in-phase reference pattern using at least one of said antennas, and establishing wireless communication between the direction finder and said target; (d) attenuating the wireless communication signal between the direction finder and said target until the wireless communication is lost, and recording the attenuation value which corresponds to said loss of wireless communication as the R reference value; (e) generating an out-of-phase null pattern using at least two of said antennas, and re-establishing wireless communication between the direction finder and said target; (f) attenuating the wireless communication signal between the direction finder and said target until the wireless communication is lost, and recording the attenuation value which corresponds to said loss of wireless communication as the N null value; (g) determining whether the difference R-N is above or below said threshold difference, wherein a difference R-N above said threshold is an indication that the target is within said direction sector of interest, and wherein a difference R-N below said threshold is an indication that the target is out of said direction sector of interest. The invention also relates to a device for carrying out said method.
    • 本发明涉及一种用于确定目标是否在取向器的感兴趣的方向扇区内的方法,其包括:(a)将所述感兴趣区段预定义为R参考值和N空值之间的特定阈值差; (b)在取向器内提供布置成宽边配置的至少两个天线; (c)使用所述天线中的至少一个产生同相参考模式,并且在所述测向器和所述目标之间建立无线通信; (d)衰减取向器和所述目标之间的无线通信信号,直到无线通信丢失为止,并将与所述无线通信丢失对应的衰减值记录为R基准值; (e)使用所述天线中的至少两个来产生异相无效模式,并且重新建立所述测向器与所述目标之间的无线通信; (f)衰减取向器和所述目标之间的无线通信信号,直到无线通信丢失为止,并且将与所述无线通信丢失对应的衰减值记录为N空值; (g)确定差值RN是否高于或低于所述阈值差异,其中在所述阈值以上的差值RN是所述目标在所述感兴趣的所述方向扇区之内的指示,并且其中低于所述阈值的差值RN表示所述阈值 目标超出了所关注的方向领域。 本发明还涉及一种用于执行所述方法的装置。
    • 87. 发明申请
    • LOCATOR SYSTEM FOR IMPLANTED ACCESS PORT WITH RFID TAG
    • 带有RFID标签的入口入口定位系统
    • WO2007140430A2
    • 2007-12-06
    • PCT/US2007/070010
    • 2007-05-30
    • ALLERGAN, INC.
    • BIRK, Janel, A.WEIHRICH, Donald
    • A61B19/00
    • G01S13/758A61B90/11A61B90/90A61B90/98A61F5/0059A61M39/0208A61M2039/0045A61M2039/0238A61M2205/32A61M2205/3523G01S3/043G01S5/12G01S13/4445G01S13/4454
    • An implanted fluid access port locator system for adjustable gastric bands. The system may include an access port having an RFID tag with its antenna adjacent to the receiving portion of the port. An external locator with radio frequency transmitter/receiver circuitry sends read or interrogation signals to the RFID tag and may send write signals to the tag to write treatment data to memory of the RFID tag. The locator may include an antenna array with four patch antenna arranged in pairs to model two monopulse radar antenna systems. The locator also includes processor(s) and logic modules/circuitry for processing the tag response signals received by the antenna array to determine location information for the RFID tag and associated port, i.e., to identify the center of the port relative to the antennae array or array face such as with strength and direction information relative to the array face. A method of locating implanted fluid access port includes providing radio frequency transmitter/receiver circuitry on the access port and manipulating a handheld locator outside the body to pinpoint the position and orientation of the access port. A mark may be made with a handheld locator to direct insertion of a needle for adding or removing fluid from an implanted system through the access port.
    • 植入式流体通道定位系统,用于可调节的胃束带。 该系统可以包括具有RFID标签的接入端口,其天线与端口的接收部分相邻。 具有射频发射器/接收器电路的外部定位器将读取或询问信号发送到RFID标签,并且可以向标签发送写入信号以将处理数据写入RFID标签的存储器。 定位器可以包括具有四个贴片天线的天线阵列,成对配置成模拟两个单脉冲雷达天线系统。 定位器还包括用于处理由天线阵列接收的标签响应信号的处理器和逻辑模块/电路,以确定RFID标签和相关端口的位置信息,即识别相对于天线阵列的端口的中心 或阵列面,例如相对于阵列面的强度和方向信息。 一种定位植入式流体通道的方法包括:在接入端口上提供射频发射机/接收机电路,并操纵身体外部的手持定位器,以确定接入端口的位置和方向。 可以用手持定位器进行标记,以直接插入针头,用于通过进入端口从植入系统中添加或去除流体。