Multiple-element beam steering antenna
    31.
    发明申请
    Multiple-element beam steering antenna 有权
    多元素波束导向天线

    公开(公告)号:US20060152422A1

    公开(公告)日:2006-07-13

    申请号:US11031660

    申请日:2005-01-07

    IPC分类号: H01Q1/32

    摘要: An antenna for receiving and/or transmitting circularly and linearly polarized RF signals includes a circularly polarized radiation element and a linearly polarized radiation element. The radiation elements are disposed co-planar and spaced apart from each other on a pane of glass. The linearly polarized radiation element is fed with a phase-shifted signal line. A ground plane is disposed parallel to the radiation elements to sandwich a dielectric of air. The antenna produces the effect of tilting a radiation beam from a higher to a lower elevation angle to achieve a higher gain at lower elevation angles.

    摘要翻译: 用于接收和/或发送圆形和线性偏振RF信号的天线包括圆偏振辐射元件和线偏振辐射元件。 辐射元件在玻璃板上共同设置并彼此间隔开。 线偏振辐射元件被馈送有相移信号线。 接地平面布置成与辐射元件平行,以夹住空气的电介质。 天线产生将辐射束从较高仰角倾斜到较低仰角的效果,以便在较低仰角处获得更高的增益。

    Frequency calibration for a monolithic clock generator and timing/frequency reference
    33.
    发明申请
    Frequency calibration for a monolithic clock generator and timing/frequency reference 有权
    单片时钟发生器的频率校准和定时/频率参考

    公开(公告)号:US20070222529A1

    公开(公告)日:2007-09-27

    申请号:US11805427

    申请日:2007-05-23

    IPC分类号: G01R23/00

    摘要: Exemplary embodiments of the invention provide a system, method and apparatus for frequency calibration of a free-running, reference harmonic oscillator. An exemplary system comprises the harmonic oscillator, a frequency divider, a comparator, and a reactance modulator. The reference harmonic oscillator includes a plurality of switchable reactance modules controlled by corresponding coefficients, and provides an oscillation signal having an oscillation frequency, which is divided or multiplied by the frequency divider to provide an output signal having an output frequency. The comparator compares the output frequency to an externally supplied reference frequency using first and second predetermined levels of discrimination, and provides first or second comparison signals when the output frequency is higher or lower than the reference frequency. The reactance modulator determines a plurality of coefficients to control switching of the plurality of switchable reactance modules to increase or decrease a reactance of the oscillator in response to the first and second comparison signals.

    摘要翻译: 本发明的示例性实施例提供了一种用于自由运行的参考谐波振荡器的频率校准的系统,方法和装置。 示例性系统包括谐波振荡器,分频器,比较器和电抗调制器。 参考谐波振荡器包括由相应系数控制的多个可切换电抗模块,并提供具有振荡频率的振荡信号,该振荡信号被分频器分频或乘以分频器以提供具有输出频率的输出信号。 比较器使用第一和第二预定等级的鉴别比较输出频率与外部提供的参考频率,并且当输出频率高于或低于参考频率时提供第一或第二比较信号。 电抗调制器确定多个系数以控制多个可切换电抗模块的切换,以响应于第一和第二比较信号增加或减小振荡器的电抗。

    Multiple-element beam steering antenna
    34.
    发明授权
    Multiple-element beam steering antenna 有权
    多元素波束导向天线

    公开(公告)号:US07224319B2

    公开(公告)日:2007-05-29

    申请号:US11031660

    申请日:2005-01-07

    IPC分类号: H01Q1/32

    摘要: An antenna for receiving and/or transmitting circularly and linearly polarized RF signals includes a circularly polarized radiation element and a linearly polarized radiation element. The radiation elements are disposed co-planar and spaced apart from each other on a pane of glass. The linearly polarized radiation element is fed with a phase-shifted signal line. A ground plane is disposed parallel to the radiation elements to sandwich a dielectric of air. The antenna produces the effect of tilting a radiation beam from a higher to a lower elevation angle to achieve a higher gain at lower elevation angles.

    摘要翻译: 用于接收和/或发送圆形和线性偏振RF信号的天线包括圆偏振辐射元件和线偏振辐射元件。 辐射元件在玻璃板上共同设置并彼此间隔开。 线偏振辐射元件被馈送有相移信号线。 接地平面布置成与辐射元件平行,以夹住空气的电介质。 天线产生将辐射束从较高仰角倾斜到较低仰角的效果,以便在较低仰角处获得更高的增益。

    Frequency controller for a monolithic clock generator and timing/frequency reference
    35.
    发明申请
    Frequency controller for a monolithic clock generator and timing/frequency reference 有权
    单片时钟发生器的频率控制器和定时/频率参考

    公开(公告)号:US20060071734A1

    公开(公告)日:2006-04-06

    申请号:US11232407

    申请日:2005-09-20

    IPC分类号: H03L1/00

    摘要: In various embodiments, the invention provides a frequency controller to control and provide a stable resonant frequency of a clock generator and/or a timing and frequency reference. Such stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages. The controlled reactance modules may include fixed or variable capacitances or inductances, and may be binary weighted. Arrays of resistive modules are also provided, to generate one or more control voltages.

    摘要翻译: 在各种实施例中,本发明提供一种频率控制器,用于控制并提供时钟发生器和/或定时和频率参考的稳定谐振频率。 这样的稳定​​性是在所选择的参数如温度和制造工艺变化的变化中提供的。 各种装置实施例包括适于响应于多个参数的至少一个参数提供信号的传感器; 以及频率控制器,其适于响应于所述第二信号来修改所述谐振频率。 在示例性实施例中,响应于温度波动将传感器实现为电流源,并且频率控制器被实现为可选择地耦合到谐振器或一个或多个控制电压的多个受控电抗模块。 受控电抗模块可以包括固定或可变电容或电感,并且可以是二进制加权的。 还提供了电阻模块的阵列,以产生一个或多个控制电压。