公开(公告)号：US20110065400A1

公开(公告)日：2011-03-17

申请号：US12992594

申请日：2009-05-11

申请人： Ilari Teikari ,  Antti Kainulainen

发明人： Ilari Teikari ,  Antti Kainulainen

IPC分类号： H04B1/04

CPC分类号： G01S3/20 ,  H01Q1/2291 ,  H01Q1/243 ,  H01Q3/24 ,  H01Q21/28

摘要： Apparatus comprising an antenna switch (601) configured to select at least one antenna; and a controller (205b). The controller is configured to control the antenna switch in a first mode of operation and a second mode of operation. The first mode of operation is where the apparatus is configured to communicate with a further apparatus. The second mode of operation is where the apparatus is configured to perform a direction finding.

摘要翻译： 一种装置，包括配置成选择至少一个天线的天线开关（601） 和控制器（205b）。 控制器被配置为在第一操作模式和第二操作模式下控制天线开关。 第一操作模式是设备被配置为与另一设备通信的地方。 第二操作模式是设备被配置为执行方向查找的地方。

公开(公告)号：US07142120B2

公开(公告)日：2006-11-28

申请号：US10881020

申请日：2004-06-29

申请人： Hal Charych ,  Raj Bridgelall ,  Sumita Malik ,  Michael O'Haire

发明人： Hal Charych ,  Raj Bridgelall ,  Sumita Malik ,  Michael O'Haire

IPC分类号： G08B13/14

CPC分类号： G06K17/00 ,  G01S3/20 ,  G01S13/751 ,  G06K7/10079 ,  G06K2017/0045

摘要： Methods and apparatus are provided for locating one among many items equipped with RFID tags. The apparatus comprises a portable system interrogating the RFID tags and receiving responses therefrom that depend at least on their bearing angle. A comparator selects responses from the one item and ignores others. An annunciator indicates the presence of the one item in the interrogator field of view and, desirably but not essentially, its relative proximity. A directional antenna whose beam pattern is limited in azimuth and/or elevation provides bearing angle information. Its field of view becomes progressively smaller as the antenna approaches the one item so that a user can substantially pinpoint its location without needing any of the usual RFID infrastructure. Tag response hit rate and/or signal strength provides range related information to the interrogator. Optionally, the presence of each new tag is announced until all new tags have been identified.

摘要翻译： 提供了用于在配备有RFID标签的许多物品中定位的方法和装置。 该装置包括询问RFID标签并从其接收至少依赖于其承载角度的响应的便携式系统。 比较器选择一个项目的响应并忽略其他项目。 报告器指示在询问器视场中存在一个项目，并且希望但不是基本上它的相对接近度。 波束图案在方位和/或高度上被限制的定向天线提供了轴承角度信息。 随着天线接近一个项目，其视野逐渐变小，使得用户可以基本上精确定位其位置，而不需要任何通常的RFID基础设施。 标签响应命中率和/或信号强度向询问器提供范围相关信息。 可选地，每个新标签的存在被公布，直到所有新的标签被识别为止。

公开(公告)号：US06476764B2

公开(公告)日：2002-11-05

申请号：US09962836

申请日：2001-09-25

申请人： Russell Fang

发明人： Russell Fang

IPC分类号： H01Q300

CPC分类号： G01S3/20

摘要： The present invention relates to a system and method for monitoring a non-tracking satellite antenna terminal's pointing accuracy in three situations. First, the pointing accuracy is monitored after initial installation of the antenna within a geo-synchronous satellite communications system. Secondly, the method is employed to determine mis-pointing of the antenna terminal as a result of a long term event such as building settlement. Lastly, the method is employed to detect mis-pointing of the non-tracking antenna terminal due to a short term event, such as an earthquake, wind storm, or hurricane.

公开(公告)号：US5198823A

公开(公告)日：1993-03-30

申请号：US813137

申请日：1991-12-23

申请人： George B. Litchford ,  John Keller

发明人： George B. Litchford ,  John Keller

IPC分类号： G01S3/20 ,  G01S13/76 ,  G01S13/78

CPC分类号： G01S3/20 ,  G01S13/762 ,  G01S13/781

摘要： The range from which transponder replies can be received at a virtual secondary surveillance radar of the type described in U.S. Pat. No. 4,115,771 is extended by replacing the omnidirectional antenna previously utilized to receive replies from transponders within the range of the SSR with a stationary array of a plurality of directive antennas arranged in a circle and having radiation patterns pointing in different directions from the center of and covering a respective sector of the circle, and sequentially switching on the antenna of the array covering the sector in which the rotating beam of the associated SSR is then pointing. In an arrangement in which the SSR and PSSR are so widely separated that in certain pointing directions the SSR beam overlies more than one sector of the antenna array, the antennas are sequentially switched on at calculated switching times determined from the pointing direction of the SSR beam and the times it takes in the geometrical arrangement between the SSR beam and the radiation patterns of the antennas of the array, for a given SSR interrogating pulse to propagate, from launch, along the beam until it reaches the line separating the first encountered sector from the next adjacent sector, between second and third sectors, and so on, such that a high gain directive antenna is always pointing in the proper direction to receive reply signals from a transponder intercepted by the scanning beam of the SSR.

摘要翻译： 在美国专利中描述的类型的虚拟二次监视雷达可以接收应答器应答的范围。 第4,115,771号是通过将先前用于接收来自SSR范围内的应答器的答复的全向天线替换为布置成圆形的多个指向天线的固定阵列，并具有指向与 覆盖圆的相应扇区，并且顺序地打开覆盖相关联的SSR的旋转束然后指向的扇区的阵列的天线。 在其中SSR和PSSR被分离得如此广泛的布置中，在某些指向方向上，SSR波束覆盖在天线阵列的多于一个扇区上，天线按照从SSR波束的指向方向确定的计算的切换时间顺序地接通 以及SSR光束与阵列天线的辐射图之间的几何布置所花费的时间，因为给定的SSR询问脉冲从发射沿着光束传播，直到其到达分离第一个遇到的扇区的线 下一相邻扇区，第二和第三扇区之间等等，使得高增益指导天线总是指向正确的方向以接收来自由SSR的扫描光束拦截的应答器的应答信号。

公开(公告)号：US4107692A

公开(公告)日：1978-08-15

申请号：US776077

申请日：1977-03-09

申请人： Robert Stewart Hutcheon ,  Bruce E. Gordon

发明人： Robert Stewart Hutcheon ,  Bruce E. Gordon

IPC分类号： G01S3/20

CPC分类号： G01S3/20

摘要： A radio frequency signal direction finding system wherein radio frequency signals received at output ports of a multibeam array antenna are sequentially sampled, in response to a sampling signal, at a frequency f.sub.s. The sampled signals are fed to a receiver channel which is tuned to the sampling frequency to produce a composite signal having a frequency f.sub.s and a phase angle, relative to a reference phase angle of the sampling signal, which provides an indication of the relative signal levels received at the output ports and hence an indication of the angular direction of a source of the radio frequency signals.

摘要翻译： 射频信号测向系统，其中响应于采样信号以频率fs顺序采样在多波束阵列天线的输出端口接收的射频信号。 采样的信号被馈送到接收机信道，该接收机信道被调谐到采样频率以产生相对于采样信号的参考相位角具有频率fs和相位角的复合信号，其提供相对信号电平的指示 在输出端口处接收并因此指示射频信号源的角度方向。

公开(公告)号：US3965473A

公开(公告)日：1976-06-22

申请号：US501342

申请日：1974-08-28

申请人： Anders Edvin Isacson

发明人： Anders Edvin Isacson

IPC分类号： G01S3/12 ,  G01S3/20 ,  G01S5/04

CPC分类号： G01S3/12 ,  G01S3/20

摘要： A direction finder having an antenna system adapted to receive signals and provided with a right-hand and a left-hand lobe system. By coupling means said lobe systems can be made alternately operative. A comparison means is arranged for comparing received signals. Said coupling means is arranged to make operative only when main antenna and a first comparison means is adapted to compare the signal intensity in the right-hand lobe system with the signal intensity of said main antenna. A first indicator is arranged to be activated as soon as the signal intensity of the main antenna exceeds the signal intensity of one of the lobe systems. A second comparison means is arranged to compare signal intensities received on the right-hand and left-hand lobe systems. A second indicator is arranged to indicate the output signals of said second comparison means. Said right-hand and left-hand lobes comprising said lobe systems are arranged to partly overlap each other so that the maximum common signal intensity received exceeds the corresponding signal intensity received on the main antenna in the same direction.

摘要翻译： 具有适于接收信号并具有右手和左手叶系统的天线系统的测向仪。 通过联接装置，所述波瓣系统可以交替地操作。 布置比较装置来比较接收到的信号。 所述耦合装置被布置成仅当主天线和第一比较装置适于将右手瓣系统中的信号强度与所述主天线的信号强度进行比较时才起作用。 只要主天线的信号强度超过其中一个波瓣系统的信号强度，第一个指示器就被激活。 布置第二比较装置来比较在右手和左手叶系统上接收的信号强度。 第二指示符被布置为指示所述第二比较装置的输出信号。 包括所述波瓣系统的所述右手和左手叶布置成部分地彼此重叠，使得接收到的最大公共信号强度超过在相同方向上在主天线上接收的相应信号强度。

公开(公告)号：US20150334527A1

公开(公告)日：2015-11-19

申请号：US14685597

申请日：2015-04-14

申请人： PEGATRON CORPORATION

发明人： Huan-Chia CHANG

IPC分类号： H04W4/02 ,  H04B17/27

CPC分类号： G01S3/20 ,  H04B17/27 ,  H04B17/318 ,  H04W4/023 ,  H04W4/026 ,  H04W4/027

摘要： An electronic device is disclosed. The electronic device comprises an antenna module, a direction detecting module and a signal processing module. The antenna module is provided for communicating with a wireless communication device. The direction detecting module is provided for detecting strength of N wireless signals that the antenna module received from a first offset angle to N-th offset angle with respect to the wireless communication device to determine a directivity of the wireless communication device, in which N is a positive integer larger than 1. The signal processing module is provided for comparing the offset angles corresponding to the strength of the N wireless signals at the directivity of the wireless communication device with a look-up table for obtaining an angle of the wireless communication device with respect to the electronic device.

摘要翻译： 公开了一种电子设备。 电子设备包括天线模块，方向检测模块和信号处理模块。 天线模块被提供用于与无线通信设备进行通信。 方向检测模块用于检测天线模块相对于无线通信设备从第一偏移角到第N偏移角接收的N个无线信号的强度，以确定无线通信设备的方向性，其中N是 提供大于1的正整数。信号处理模块用于将与无线通信设备的方向性下的N个无线信号的强度相对应的偏移角与用于获得无线通信设备的角度的查找表进行比较 相对于电子设备。

公开(公告)号：US09166289B2

公开(公告)日：2015-10-20

申请号：US13421576

申请日：2012-03-15

申请人： Thomas A. Donaldson

发明人： Thomas A. Donaldson

IPC分类号： H04W24/00 ,  H01Q3/26 ,  H01Q21/06 ,  G01S3/20 ,  H04W16/28

CPC分类号： H01Q3/2611 ,  G01S3/20 ,  H01Q21/061 ,  H04W16/28

摘要： Systems, apparatuses, devices, and methods for wireless communications. An antenna in which nulls or directions of reduced performance can be selectively introduced is provided, and the performance of a communication link to a wireless communication device is monitored. By correlating the selectively reduced sensitivity of the antenna with reductions in the communication link performance, the direction of the wireless communication device may be estimated. Embodiments of the present invention may be used in numerous applications, such as cell phones, PDA's, and laptops.

摘要翻译： 用于无线通信的系统，设备，设备和方法。 提供了一种天线，其中可以选择性地引入降低性能的零点或方向，并且监视到无线通信设备的通信链路的性能。 通过将天线的选择性降低的灵敏度与通信链路性能的降低相关联，可以估计无线通信设备的方向。 本发明的实施例可以用于诸如手机，PDA和膝上型计算机的许多应用中。

公开(公告)号：US09130633B2

公开(公告)日：2015-09-08

申请号：US13430758

申请日：2012-03-27

申请人： Teppei Oyama

发明人： Teppei Oyama

IPC分类号： H01Q3/00 ,  H04B7/06 ,  G01S3/20 ,  H04W16/28

CPC分类号： H04B7/0695 ,  G01S3/20 ,  H04W16/28

摘要： There is provided a wireless communication device includes a transmitter configured to transmit a known signal in each of a plurality of first directions different from each other, a receiver configured to receive a plurality of first reflected waves, each of the plurality of first reflected waves being generated by the known signal transmitted in each of the plurality of first directions and to detect each of a plurality of first reception intensities, each of the plurality of first reception intensities being associated with each of the plurality of first reflected waves; and a controller configured to determine a transmission direction of a radio signal addressed to a first wireless terminal, based on the plurality of first reception intensities and to control the transmitter to transmit the radio signal in the transmission direction.

摘要翻译： 提供了一种无线通信装置，包括：发送机，被配置为在彼此不同的多个第一方向中的每一个中发送已知信号;接收器，被配置为接收多个第一反射波，所述多个第一反射波中的每一个是 通过在多个第一方向中的每一个中发送的已知信号产生，并且检测多个第一接收强度中的每一个，所述多个第一接收强度中的每一个与所述多个第一反射波中的每一个相关联; 以及控制器，被配置为基于所述多个第一接收强度来确定寻址到第一无线终端的无线电信号的传输方向，并且控制所述发射机在所述传输方向上发送所述无线电信号。

公开(公告)号：US20130059539A1

公开(公告)日：2013-03-07

申请号：US13600134

申请日：2012-08-30

申请人： Mark ELSOM-COOK

发明人： Mark ELSOM-COOK

IPC分类号： H04B17/00

CPC分类号： H04W64/00 ,  G01S3/20 ,  G01S11/02 ,  G01S11/06 ,  H04W8/005 ,  H04W84/18

摘要： A wireless short range radio-frequency master device adapted to create and maintain a portable private network of wireless short range radio-frequency slave devices wherein the master device is configured to detect and register suitable slave devices for a network, and is capable of determining the proximity of any registered slave device with respect to the master device in use, the master device further being adapted to enable a user to define two or more groups of registered slave devices selected from the total number of registered slave devices and to enable a user to select a defined group of such registered slave devices as an active group, thereby forming an active portable private network of wireless short range radio frequency devices comprising the master device and selected registered slave devices within the selected group.

摘要翻译： 一种无线短距离射频主设备，适用于创建和维护无线短距离射频从设备的便携式私有网络，其中主设备被配置为检测和注册适合于网络的从设备，并且能够确定 任何注册的从设备相对于正在使用的主设备的接近度，主设备还适于使得用户能够定义从总登录的从设备中选择的两组或更多组注册的从设备，并且使用户能够 选择所定义的一组这样的注册的从设备作为活动组，从而形成无线短程射频设备的主动便携式专用网络，其包括所选组中的主设备和选择的注册从设备。