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73 条记录 (耗时 0.043 秒)

    Radio-over-fiber transponder with a dual-band patch antenna system
    52.
    发明授权
    Radio-over-fiber transponder with a dual-band patch antenna system 有权
    具有双频贴片天线系统的无线电光纤转发器

    公开(公告)号：US07627250B2

    公开(公告)日：2009-12-01

    申请号：US11504999

    申请日：2006-08-16

    申请人： Jacob George ,  Michael Sauer ,  Luis A. Zenteno

    发明人： Jacob George ,  Michael Sauer ,  Luis A. Zenteno

    IPC分类号： H04B10/00

    CPC分类号： H04B10/25759 ,  H04B10/25754

    摘要： The radio-over-fiber (RoF) transponder includes a converter unit adapted to convert RF electrical signals into optical signals and vice versa, and an antenna system electrically coupled to the converter unit. The antenna system includes first and second Z-shaped patch antenna elements formed on an antenna substrate. These patches are adapted to respectively transmit and receive radio-frequency (RF) electromagnetic radiation at a first frequency fA (e.g., 2.4 GHz) over a first picocell. The antenna system also includes a square patch antenna element formed atop the antenna substrate surface between the first and second Z-shaped patch antenna elements. The square patch antenna is adapted to transmit and receive RF electromagnetic radiation at a second frequency fB (e.g., 5.2 GHz) over a second picocell substantially co-located with the first picocell. One or more spaced-apart transponders can be supported by one or more optical fibers to form an array of picocells.

    摘要翻译： 无线电光纤（RoF）应答器包括转换器单元，其适于将RF电信号转换成光信号，反之亦然，以及电耦合到转换器单元的天线系统。 天线系统包括形成在天线基板上的第一和第二Z形贴片天线元件。 这些贴片适于在第一微微小区上以第一频率fA（例如，2.4GHz）分别发射和接收射频（RF）电磁辐射。 天线系统还包括形成在第一和第二Z形贴片天线元件之间的天线基板表面顶部的方形贴片天线元件。 方形贴片天线适于在与第一微微小区基本共位的第二微微小区上以第二频率fB（例如，5.2GHz）发射和接收RF电磁辐射。 一个或多个间隔开的应答器可以由一个或多个光纤支撑以形成微微小区阵列。

    Microwave applicator, system, and method for providing generally circular heating
    54.
    发明申请
    Microwave applicator, system, and method for providing generally circular heating 有权
    微波施加器，系统和用于提供大体圆形加热的方法

    公开(公告)号：US20090166355A1

    公开(公告)日：2009-07-02

    申请号：US11824301

    申请日：2007-06-29

    申请人： Kevin Robert Brundage ,  Jacob George ,  Elizabeth Marie Vileno

    发明人： Kevin Robert Brundage ,  Jacob George ,  Elizabeth Marie Vileno

    IPC分类号： H05B6/70

    CPC分类号： H05B6/701 ,  B28B11/241 ,  B28B11/243 ,  F26B3/347 ,  F26B15/12 ,  F26B2210/02 ,  H05B6/705

    摘要： A microwave applicator assembly includes a microwave applicator that excites TE modes and provides a generally circular heating pattern in a lossy dielectric material. The microwave applicator has a processing chamber bounded by a circumferential wall in which a plurality of indents are formed. The microwave applicator assembly may further include a feed waveguide coupled to the microwave applicator for inputting microwaves into the processing chamber. The microwave applicator assembly may further include one or more choking sections in communication with the processing chamber to enhance heating efficiency and reduce microwave leakage.

    摘要翻译： 微波施加器组件包括微波施加器，其激发TE模式并且在有损介质材料中提供大致圆形的加热图案。 微波施加器具有由周壁限定的处理室，其中形成有多个凹口。 微波施加器组件还可以包括耦合到微波施加器的馈送波导，用于将微波输入到处理室中。 微波施加器组件还可以包括与处理室连通的一个或多个阻塞部分，以提高加热效率并减少微波泄漏。

    Radio-over-fiber (RoF) optical fiber cable system with transponder diversity and RoF wireless picocellular system using same
    57.
    发明申请
    Radio-over-fiber (RoF) optical fiber cable system with transponder diversity and RoF wireless picocellular system using same 有权
    具有应答器分集的无线光纤（RoF）光缆系统和使用它的RoF无线微微蜂窝系统

    公开(公告)号：US20080070502A1

    公开(公告)日：2008-03-20

    申请号：US11521717

    申请日：2006-09-15

    申请人： Jacob George ,  Michael Sauer

    发明人： Jacob George ,  Michael Sauer

    IPC分类号： H04B7/00 ,  H04Q7/20

    CPC分类号： H04B10/25759 ,  H04B10/25756

    摘要： A radio-over-fiber (RoF) optical fiber cable system with transponder diversity for a RoF wireless picocellular system that includes at least one optical fiber cable. The at least one optical fiber cable supports one or more groups of two or more transponders, wherein the transponders in a given group are arranged to form substantially co-located picocells. The transponders in each transponder group may also have one of two orthogonal antenna polarizations. A diversity combiner optically coupled to each transponder determines respective signal strengths from each transponder in each transponder group. The transponder with the greatest signal strength in a given transponder group is selected to form the picocell for the given group. This allows for the optical fiber cable system to adjust to changes in the signal strength of each picocell, such as caused by a transponder obstruction or failure.

    摘要翻译： 一种具有用于RoF无线微微蜂窝系统的应答器分集的无线电光纤（RoF）光缆系统，其包括至少一根光纤电缆。 所述至少一个光纤电缆支撑两个或更多个转发器的一个或多个组，其中给定组中的应答器被布置成形成基本上位于的微微小区。 每个应答器组中的应答器也可以具有两个正交天线偏振中的一个。 光耦合到每个应答器的分集组合器确定来自每个转发器组中每个应答器的相应信号强度。 在给定的转发器组中具有最大信号强度的应答器被选择以形成给定组的微微小区。 这允许光纤电缆系统调整到每个微微小区的信号强度的变化，例如由应答器阻塞或故障引起的。

    Hollow semicircularly curved loudspeaker enclosure
    59.
    发明授权
    Hollow semicircularly curved loudspeaker enclosure 失效
    空心半圆弧形扬声器外壳

    公开(公告)号：US06425456B1

    公开(公告)日：2002-07-30

    申请号：US09614405

    申请日：2000-07-12

    申请人： Jacob George

    发明人： Jacob George

    IPC分类号： A47B8106

    CPC分类号： H04R1/34

    摘要： A loudspeaker enclosure having an improved full range driver and an improved enclosure assembly. The enclosure assembly comprise a hollow semicircularly curved internal and external casing thereby forming semicircular external baffles; a series of interconnected flat baffles forming an internal baffle placed inside the hollow semicircularly curved casing, the series of flat baffles peripherally bordered by the hollow semicircularly curved casing and enclosed with side panels to form a circuitous labyrinth of a constantly increasing cross section, the labyrinth subsequently splitting and terminating into an exit port for each split pathway, the side panels together with the hollow semicircularly curved casing forming the enclosure's external walls; a compression chamber inside the cylindrical top of the semicircularly curved casing behind the driver, the compression chamber having a back open end facing a sloping back semicircular wall to allow sound waves coming from the driver to travel down the labyrinth and prevent back waves from reflecting back to the driver; and, a base unit for holding and stabilizing the enclosure.

    摘要翻译： 具有改进的全范围驱动器和改进的外壳组件的扬声器外壳。 外壳组件包括中空半圆形弯曲的内部和外部壳体，从而形成半圆形外部挡板; 一系列相互连接的平板挡板，形成一个位于中空半圆形弯曲外壳内部的内部挡板，该系列平面挡板由中空半圆形弯曲外壳周边界定，并用侧板封闭，形成不断增加横截面的迂回迷宫，迷宫 随后分开并终止于每个分离通道的出口，侧板与形成外壳的外壁的中空半圆形弯曲外壳一起​​; 位于驱动器后面的半圆形弯曲壳体的圆筒形顶部内的压缩室，压缩室具有面向倾斜后半圆形壁的后开口端，以允许来自驾驶员的声波向下行进迷宫，并防止反波反射回 给司机 以及用于保持和稳定外壳的基座单元。

    Fluctuations based digital signal processor including phase variations
    60.
    发明授权
    Fluctuations based digital signal processor including phase variations 失效
    基于波动的数字信号处理器包括相位变化

    公开(公告)号：US5732045A

    公开(公告)日：1998-03-24

    申请号：US787001

    申请日：1996-12-31

    申请人： Ronald A. Wagstaff ,  Jacob George

    发明人： Ronald A. Wagstaff ,  Jacob George

    IPC分类号： G01V1/36 ,  H04B1/06

    CPC分类号： G01V1/364 ,  G01V2210/324 ,  Y10S367/901

    摘要： A scheme for filtering noise from a signal, in which the noise fluctuates significantly in phase. The signal is sampled to produce N members of a time series and the phase of each signal extracted in the form of a magnitude and a phaser, i.e. for a time series .vertline.x.sub.1 .vertline.e.sup.i.theta..sbsp.1, .vertline.x.sub.2 .vertline.e.sup.i.theta..sbsp.2, . . . , .vertline.x.sub.N .vertline.e.sup.i.theta..sbsp.N, where .vertline.x.sub.n .vertline. is the magnitude of the nth member of the N time samples, and e.sup.i.theta..sbsp.N the phaser for the nth sample. The phasers are added to form a complex value s such that s=.SIGMA..sub.N=1.sup.N �Re(e.sup.i.theta..sbsp.n)+iIm(e.sup.i.theta..sbsp.n)!. Phase noise which fluctuates strongly will tend cancel itself in the sum s, whereas phase resulting from a stable signal will tend to reinforce. Thus the scalar .vertline.s.vertline. will be relatively large in the presence of stable tonals, and small in the presence of noise alone, making it an effective signal filter.

    摘要翻译： 用于从信号中滤除噪声的方案，其中噪声在相位上显着波动。 信号被采样以产生时间序列的N个成员，并且以幅度和相位器的形式提取每个信号的相位，即时间序列| x1 |eiθ1，| x2 |eiθ2。 。 。 ，| xN | eiθN，其中| xn | 是N个时间样本的第n个成员的大小，ei theta N是第n个样本的移相器。 添加相量以形成复数值，使得+ E，ovs s + EE = SIGMA N = 1N [Re（ei theta n）+ iIm（ei theta n）]]。 波动较大的相位噪声将趋向于在和s中自身消失，而由稳定信号产生的相位将趋于加强。 因此标量| + E，ovs s + EE | 在稳定的价格存在的情况下将会相对较大，并且在单独存在噪声的情况下较小，使其成为有效的信号滤波器。