LENSED ANTENNA METHODS AND SYSTEMS FOR NAVIGATION OR OTHER SIGNALS
    1.
    发明申请
    LENSED ANTENNA METHODS AND SYSTEMS FOR NAVIGATION OR OTHER SIGNALS 审中-公开
    用于导航或其他信号的透镜天线方法和系统

    公开(公告)号:US20080180336A1

    公开(公告)日:2008-07-31

    申请号:US11669732

    申请日:2007-01-31

    IPC分类号: H01Q19/06 H01Q1/38 H01Q9/04

    CPC分类号: H01Q19/062 H01Q9/0407

    摘要: Lensed antenna methods and systems are provided for navigation or other signals. A dielectric lens is positioned adjacent an antenna. A dielectric lens adjacent an annular ring patch antenna may broaden the acceptance angle of the antenna, providing the desired signal reception characteristics of the annular ring patch antenna, but with more acceptance of signals closer to the horizon. More desired phase center stability, improved phase response, and/or desired axial ratio may be provided by the dielectric lens. The dielectric lens may increase at least one performance characteristic of stacked or multi-frequency antennas. The lens modifies a radiation pattern for determining a range as a function of the navigation signals received through the dielectric lens. The methods and systems are used for GNSS, communications, multimedia, or other radio frequency signals on a mobile or stationary platform, such as a vehicle or hand-carried device.

    摘要翻译: 提供引信天线方法和系统用于导航或其他信号。 介电透镜位于天线附近。 与环形贴片天线相邻的电介质透镜可以扩大天线的接受角度,提供环形贴片天线的期望的信号接收特性,但是更接近信号更接近水平线。 可以通过介电透镜提供更期望的相位中心稳定性,改善的相位响应和/或期望的轴比。 电介质透镜可以增加堆叠或多频天线的至少一个性能特征。 透镜修改用于确定作为通过介电透镜接收的导航信号的函数的范围的辐射图。 所述方法和系统用于诸如车辆或手持设备的移动或固定平台上的GNSS,通信,多媒体或其他射频信号。

    DISTRIBUTED RADIO FREQUENCY RANGING SIGNAL RECEIVER FOR NAVIGATION OR POSITION DETERMINATION
    2.
    发明申请
    DISTRIBUTED RADIO FREQUENCY RANGING SIGNAL RECEIVER FOR NAVIGATION OR POSITION DETERMINATION 有权
    用于导航或位置确定的分布式无线电频率范围信号接收器

    公开(公告)号:US20090115658A1

    公开(公告)日:2009-05-07

    申请号:US10909243

    申请日:2004-07-30

    IPC分类号: G01S1/00

    摘要: In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced away from other portions of the receiver. The down converter down converts received ranging signals and provides them to the remotely spaced receiver portions. A signal line connecting the down converter to the receiver may be operable to transmit any two or more of a reference signal provided to the down converter, the down converted intermediate frequency signals provided to the receiver, and power provided to the down converter. The receiver may be positioned adjacent to or as part of a land-based transmitter. By determining positions of two or more antennas, the location of the associated transmitter is determined.

    摘要翻译: 在本地定位系统中,接收机适于接收来自陆基发射机的信号。 该接收机包括一个模拟解相关器,用于对发射的扩频信号进行去相关。 与天线连接的降压转换器可以与接收器的其它部分间隔开。 下变频器降低转换接收的测距信号并将其提供给远程间隔的接收机部分。 将下变频器连接到接收器的信号线可以用于发送提供给下变频器的参考信号,提供给接收机的下变频中频信号以及提供给下变频器的功率中的任何两个或多个。 接收器可以定位成与陆基发射器相邻或作为陆基发射器的一部分。 通过确定两个或更多个天线的位置,确定相关联的发射机的位置。

    Distributed radio frequency ranging signal receiver for navigation or position determination
    3.
    发明授权
    Distributed radio frequency ranging signal receiver for navigation or position determination 有权
    分布式射频测距信号接收机,用于导航或位置确定

    公开(公告)号:US07532160B1

    公开(公告)日:2009-05-12

    申请号:US10909243

    申请日:2004-07-30

    IPC分类号: G01S3/02 G01S1/00

    摘要: In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced away from other portions of the receiver. The down converter down converts received ranging signals and provides them to the remotely spaced receiver portions. A signal line connecting the down converter to the receiver may be operable to transmit any two or more of a reference signal provided to the down converter, the down converted intermediate frequency signals provided to the receiver, and power provided to the down converter. The receiver may be positioned adjacent to or as part of a land-based transmitter. By determining positions of two or more antennas, the location of the associated transmitter is determined.

    摘要翻译: 在本地定位系统中,接收机适于接收来自陆基发射机的信号。 该接收机包括一个模拟解相关器,用于对发射的扩频信号进行去相关。 与天线连接的降压转换器可以与接收器的其它部分间隔开。 下变频器降低转换接收的测距信号并将其提供给远程间隔的接收机部分。 将下变频器连接到接收器的信号线可以用于发送提供给下变频器的参考信号,提供给接收机的下变频中频信号以及提供给下变频器的功率中的任何两个或多个。 接收器可以定位成与陆基发射器相邻或作为陆基发射器的一部分。 通过确定两个或更多个天线的位置,确定相关联的发射机的位置。

    Multiple frequency antenna structures and methods for receiving navigation or ranging signals
    4.
    发明授权
    Multiple frequency antenna structures and methods for receiving navigation or ranging signals 有权
    用于接收导航或测距信号的多频天线结构和方法

    公开(公告)号:US07315278B1

    公开(公告)日:2008-01-01

    申请号:US10909140

    申请日:2004-07-30

    IPC分类号: G01S5/14 G01S3/02

    摘要: In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy better than one wavelength of a carrier of the signals from the GNSS. Different decorrelation may be used for signals from a satellite than from a land-based transmitter, such as using a digital decorrelator for signals from the satellite and an analog decorrelator for signals from a land-based transmitter. The receivers may include both a GNSS antenna and a local antenna. The phase centers of the two antennas are within one wavelength of the GNSS signals from each other. The local antenna is sized for operation in the X or ISM-bands of frequencies. The GNSS antenna is a patch antenna where the microwave antenna extends away from the patch antenna in at least one dimension.

    摘要翻译: 在本地定位系统中,通过从GNSS接收信号来提供陆基系统的增强。 来自陆上定位系统的信号的编码相位精度优于来自GNSS的信号的载波的一个波长。 不同的去相关可以用于来自卫星的信号,而不是来自基于陆地的发射机,例如对于来自卫星的信号使用数字解相关器和用于来自陆地发射机的信号的模拟去相关器。 接收机可以包括GNSS天线和本地天线。 两个天线的相位中心在GNSS信号的一个波长内。 本地天线的大小适合在X或ISM频段中运行。 GNSS天线是贴片天线,其中微波天线在至少一个维度上远离贴片天线延伸。

    Dual-element microstrip patch antenna for mitigating radio frequency interference
    5.
    发明授权
    Dual-element microstrip patch antenna for mitigating radio frequency interference 失效
    双元件微带贴片天线,用于减轻射频干扰

    公开(公告)号:US06930639B2

    公开(公告)日:2005-08-16

    申请号:US10390331

    申请日:2003-03-14

    摘要: Method and apparatus for reducing radio frequency interference (RFI) using a dual-element patch antenna [10]. The antenna possesses two antenna elements [13, 14] having distinct radiation patterns. Either element may be independently selected using a DC bias voltage. Diodes [20] connected to the elements serve to disable one element when the other is selected. In one selected mode, a nominal radiation pattern provides a broad, hemispherical shaped sensitivity that is designed for acquiring and tracking all navigation satellites above the horizon. This nominal radiation pattern, however, is susceptible to interference that is present near or below the horizon. The second selectable radiation pattern of the dual-element antenna has comparatively higher gain toward zenith, and lower gain at and below the horizon to mitigate interference. This combination of features is packaged in a single antenna unit that can be a direct replacement for existing antennas. The dual-element antenna unit has a low vertical profile and is suitable for mounting on high-speed moving vehicles.

    摘要翻译: 使用双元件贴片天线降低射频干扰(RFI)的方法和装置[10]。 天线具有两个具有不同辐射图案的天线元件[13,14]。 可以使用DC偏置电压独立地选择任一元件。 连接到元件的二极管[20]用于在选择另一个元件时禁用一个元件。 在一种选择的模式中,标称辐射图形提供广泛的半球形灵敏度,其设计用于获取和跟踪地平线以上的所有导航卫星。 然而,这种标称辐射模式易于存在于地平线附近或之下的干扰。 双元件天线的第二种可选择的辐射图形具有相对较高的天顶增益,并且在水平线上和下方的增益较低以减轻干涉。 这种特征的组合被封装在单个天线单元中,其可以是现有天线的直接替代。 双元件天线单元具有低垂直轮廓,适合安装在高速移动车辆上。