利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.018 秒)

    Method and apparatus for up-and down-conversion of radio frequency (RF) signals
    1.
    发明授权
    Method and apparatus for up-and down-conversion of radio frequency (RF) signals 有权
    用于射频（RF）信号的上下转换的方法和装置

    公开(公告)号：US07046980B1

    公开(公告)日：2006-05-16

    申请号：US10070280

    申请日：2000-09-01

    申请人： Tajinder Manku ,  Chris Snyder ,  Gareth Weale ,  Lawrence Wong

    发明人： Tajinder Manku ,  Chris Snyder ,  Gareth Weale ,  Lawrence Wong

    IPC分类号： H04B1/26

    CPC分类号： H04B1/30 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/00 ,  H04B1/0475 ,  H04B2001/0491

    摘要： This patent describes a method and system which overcomes the LO-leakage problem of direct conversion and similar RF transmitters and receivers. To solve this problem a virtual LO™ signal is generated which emulates mixing with a local oscillator (LO) signal. However, the virtual local oscillator (VLO) signal is constructed using signals that do not contain a significant amount of power (or no power at all) at the wanted output RF frequency, so there is no LO component to leak to the output. The invention also does not require sophisticated filters or large capacitors as other designs in the art, so it is fully integratable.

    摘要翻译： 该专利描述了克服直接转换和类似RF发射器和接收器的LO泄漏问题的方法和系统。 为了解决这个问题，产生模拟与本地振荡器（LO）信号的混合的虚拟LO（TM）信号。 然而，虚拟本地振荡器（VLO）信号使用在所需输出RF频率下不包含大量功率（或根本无功率）的信号来构造，因此没有LO分量泄漏到输出端。 本发明也不需要复杂的滤波器或大电容器作为本领域的其他设计，因此它是完全可整合的。

    Method and apparatus for up-and-down-conversion of radio frequency (RF) signals
    2.
    发明授权
    Method and apparatus for up-and-down-conversion of radio frequency (RF) signals 有权
    用于射频（RF）信号的上下转换的方法和装置

    公开(公告)号：US07215931B2

    公开(公告)日：2007-05-08

    申请号：US10363158

    申请日：2002-06-19

    申请人： Chris Snyder ,  Tajinder Manku ,  Gareth Weale ,  Lawrence Wong

    发明人： Chris Snyder ,  Tajinder Manku ,  Gareth Weale ,  Lawrence Wong

    IPC分类号： H04B1/40 ,  H04B1/18 ,  H04B1/16 ,  H04B1/38 ,  H04B1/66

    CPC分类号： H03D7/163 ,  H04B1/406

    摘要： This patent describes a method and system which overcomes the LO-leakage problem during modulation and demodulation, common to direct conversion and similar RF transmitters and receivers. This problem is solved using a virtual local oscillator (VLO™) signal which emulates mixing with a local oscillators (LO) signal. The VLO signal is constructed using complementary mixing signals that suppress mixing power in the bandwidth of the input signal, and within the bandwidth of the output frequency. Specifically, mixing is done in two or more stages, using time-varying mixing signals φ1 and φ2 which satisfy the following criteria: φ1*φ2 having significant power at the frequency of the LO being emulated, one of φ1 and φ2 having minimal power around the frequency of the output signal y(t), and the other of φ1 and φ2 having minimal power around the center frequency, fRF, of the input signal x(t).

    摘要翻译： 该专利描述了克服在调制和解调期间的LO泄漏问题的方法和系统，其直接转换和类似的RF发射器和接收器是共同的。 使用模拟与本地振荡器（LO）信号的混合的虚拟本地振荡器（VLO TM）信号来解决该问题。 使用互补混合信号构成VLO信号，其抑制输入信号的带宽中的混合功率，并且在输出频率的带宽内。 具体地说，使用满足以下标准的时变混合信号phi1和2i2的两个或更多个阶段进行混合：phi <1 / 在正在仿真的LO的频率处具有显着功率的功能，具有在频率附近具有最小功率的一个phi <1>和2 的输出信号y（t），并且具有围绕中心频率f RF的最小功率的另一个phi <1> 1＆lt; 2＆lt; 2＆gt; 的输入信号x（t）。

    Method and apparatus for up-conversion of radio frequency (RF) signals
    3.
    发明授权
    Method and apparatus for up-conversion of radio frequency (RF) signals 有权
    用于射频（RF）信号的上转换的方法和装置

    公开(公告)号：US07016662B1

    公开(公告)日：2006-03-21

    申请号：US10070013

    申请日：2000-09-01

    申请人： Tajinder Manku ,  Chris Snyder ,  Gareth Weale

    发明人： Tajinder Manku ,  Chris Snyder ,  Gareth Weale

    IPC分类号： H04B1/26

    CPC分类号： H04B1/30 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/00 ,  H04B1/0475 ,  H04B2001/0491

    摘要： This patent describes a method and system which overcomes the LO-leakage problem of direct conversion and similar RF transmitters. To solve this problem a virtual LO™ signal is generated within the baseband which is tuned to the incoming RF signal. The virtual local oscillator (VLO) signal is constructed using signals that do not contain a significant amount of power (or no power at all) at the wanted output RF frequency. Any errors is generating the virtual LO signal are minimized using a closed loop correction scheme.

    摘要翻译： 该专利描述了克服直接转换和类似RF发射机的LO泄漏问题的方法和系统。 为了解决这个问题，在基带内生成虚拟LO（TM）信号，该信号被调谐到输入的RF信号。 虚拟本地振荡器（VLO）信号使用在所需输出RF频率下不包含大量功率（或无功率）的信号构成。 使用闭环校正方案，产生虚拟LO信号的任何错误被最小化。

    TUBULAR ENDFIRE SLOT-MODE ANTENNA ARRAY WITH INTER-ELEMENT COUPLING AND ASSOCIATED METHODS
    5.
    发明申请
    TUBULAR ENDFIRE SLOT-MODE ANTENNA ARRAY WITH INTER-ELEMENT COUPLING AND ASSOCIATED METHODS 有权
    带有元件耦合和相关方法的管状端基槽模式天线阵列

    公开(公告)号：US20080150820A1

    公开(公告)日：2008-06-26

    申请号：US12017183

    申请日：2008-01-21

    申请人： Timothy E. Durham ,  Griffin K. Gothard ,  Anthony Mark Jones ,  Jay Kralovec ,  Stephen R. Landers ,  Sean Ortiz ,  Chris Snyder ,  Ralph Trosa

    发明人： Timothy E. Durham ,  Griffin K. Gothard ,  Anthony Mark Jones ,  Jay Kralovec ,  Stephen R. Landers ,  Sean Ortiz ,  Chris Snyder ,  Ralph Trosa

    IPC分类号： H01Q13/10 ,  H01Q1/38 ,  H01P11/00

    CPC分类号： H01Q21/065 ,  H01Q1/38 ,  Y10T29/49016

    摘要： The tubular slot-mode antenna includes an array of slot antenna units carried by a tubular substrate, e.g. a cylindrical substrate, and each slot antenna unit having a pair of patch antenna elements arranged in laterally spaced apart relation about at least one central feed position. Adjacent patch antenna elements of adjacent slot-mode antenna units have respective spaced apart edge portions with predetermined shapes and relative positioning to provide increased capacitive coupling therebetween. The array of slot-mode antenna units may define a plurality of ring-shaped slots coaxial with an axis of the tubular substrate, and a feed arrangement may be coupled thereto to operate the array of slot-mode antenna units in an endfire mode.

    摘要翻译： 管状槽模式天线包括由管状衬底承载的缝隙天线单元的阵列，例如， 圆柱形基板，每个缝隙天线单元具有一对沿着至少一个中央进给位置以横向隔开的关系布置的一对贴片天线元件。 相邻槽模式天线单元的相邻贴片天线元件具有预定形状和相对定位的相应间隔开的边缘部分，以在它们之间提供增加的电容耦合。 槽模式天线单元的阵列可以限定与管状衬底的轴线同轴的多个环形槽，并且馈送装置可以耦合到其上以在端点模式中操作槽模式天线单元阵列。

    Tubular endfire slot-mode antenna array with inter-element coupling and associated methods
    6.
    发明授权
    Tubular endfire slot-mode antenna array with inter-element coupling and associated methods 有权
    具有元件间耦合和相关方法的管状端火槽模式天线阵列

    公开(公告)号：US07598918B2

    公开(公告)日：2009-10-06

    申请号：US12017183

    申请日：2008-01-21

    申请人： Timothy E. Durham ,  Griffin K. Gothard ,  Anthony Mark Jones ,  Jay Kralovec ,  Stephen R. Landers ,  Sean Ortiz ,  Chris Snyder ,  Ralph Trosa

    发明人： Timothy E. Durham ,  Griffin K. Gothard ,  Anthony Mark Jones ,  Jay Kralovec ,  Stephen R. Landers ,  Sean Ortiz ,  Chris Snyder ,  Ralph Trosa

    IPC分类号： H01Q13/10

    CPC分类号： H01Q21/065 ,  H01Q1/38 ,  Y10T29/49016

    摘要： The tubular slot-mode antenna includes an array of slot antenna units carried by a tubular substrate, e.g. a cylindrical substrate, and each slot antenna unit having a pair of patch antenna elements arranged in laterally spaced apart relation about at least one central feed position. Adjacent patch antenna elements of adjacent slot-mode antenna units have respective spaced apart edge portions with predetermined shapes and relative positioning to provide increased capacitive coupling therebetween. The array of slot-mode antenna units may define a plurality of ring-shaped slots coaxial with an axis of the tubular substrate, and a feed arrangement may be coupled thereto to operate the array of slot-mode antenna units in an endfire mode.

    摘要翻译： 管状槽模式天线包括由管状衬底承载的缝隙天线单元的阵列，例如， 圆柱形基板，每个缝隙天线单元具有一对沿着至少一个中央进给位置以横向隔开的关系布置的一对贴片天线元件。 相邻槽模式天线单元的相邻贴片天线元件具有预定形状和相对定位的相应间隔开的边缘部分，以在它们之间提供增加的电容耦合。 槽模式天线单元的阵列可以限定与管状衬底的轴线同轴的多个环形槽，并且馈送装置可以耦合到其上以在端点模式中操作槽模式天线单元阵列。