公开(公告)号：US08803757B2

公开(公告)日：2014-08-12

申请号：US13062445

申请日：2009-09-11

申请人： Lin-Ping Shen ,  Nasrin Hojjat

发明人： Lin-Ping Shen ,  Nasrin Hojjat

IPC分类号： H01Q1/50

CPC分类号： H01Q9/0435 ,  H01Q9/0414 ,  H01Q9/0457 ,  H01Q21/065

摘要： Various embodiments of a patch antenna, element thereof and method of feeding therefor are described. In general, the patch antenna is configured to generate orthogonal beams and comprises an array of patch elements each contributing to the orthogonal beams and comprising one or more resonators, a base reflector, and a dual feed mechanism. The dual feed mechanism generally comprises two pairs of feeding elements, each one of which comprising substantially balanced feeds configured to drive a respective one of the orthogonal beams via substantially anti-phase capacitive coupling.

摘要翻译： 描述了贴片天线，其元件及其馈送方法的各种实施例。 通常，贴片天线被配置为产生正交波束并且包括每个有助于正交波束并且包括一个或多个谐振器，基极反射器和双馈电机构的贴片元件阵列。 双馈送机构通常包括两对馈送元件，每对馈电元件包括​​基本上平衡的馈电，其被配置为通过基本上相位的电容耦合驱动相应的一个正交光束。

公开(公告)号：US20080106468A1

公开(公告)日：2008-05-08

申请号：US11858637

申请日：2007-09-20

申请人： John Litva ,  Gunes Karabulut

发明人： John Litva ,  Gunes Karabulut

IPC分类号： G01S3/00

CPC分类号： G01V15/00 ,  G01S5/0252

摘要： A system for highly accurate radio location of a passive radio beacon coincident with an object to be tracked is disclosed. The beacon directs radio signals to an antenna array located proximate to the warehouse aisles and is positioned such that it receives signals that reflect off the aisle walls grazing angles that are generally less than a maximum, and as such act effectively as mirrors. Ray-tracing techniques may be applied to calculate the response at the antenna array. The multiplicity of reflections may be considered virtual radiating elements setting up a MIMO environment of a plurality of orthogonal modes. Because the location of the beacon is calculated, noise effects can be substantially omitted with an increase in precision of the estimate.

摘要翻译： 公开了一种用于与要跟踪的对象重合的无源无线电信标的高精度无线电位置的系统。 信标将无线电信号引导到位于仓库通道附近的天线阵列，并且定位成使得其接收反射离开通道壁的信号，通常小于最大值的掠角，并且作为反射镜有效地起作用。 可以应用光线跟踪技术来计算天线阵列处的响应。 多个反射可以被认为是建立多个正交模式的MIMO环境的虚拟辐射元件。 由于计算了信标的位置，所以随着估计的精度的增加，噪声效应可以被基本上省略。

公开(公告)号：US20090163214A1

公开(公告)日：2009-06-25

申请号：US12094299

申请日：2007-03-19

申请人： Hafedh Trigui ,  Stuart J. Dean ,  John Litva

发明人： Hafedh Trigui ,  Stuart J. Dean ,  John Litva

IPC分类号： H04W16/00

CPC分类号： H04W16/24

摘要： A method and apparatus for increasing capacity and performance of a base station for a sectorized cellular wireless network is disclosed in which one of the sector antennas is replaced or supplanted by a novel sub-sector antenna that generates a plurality of asymmetrical sub-sector coverage areas that collectively substantially cover the coverage area of the replaced sector antenna. The use of asymmetrical coverage areas permits the total coverage area to closely approximate the symmetrical sector coverage area without creating excessively large sub-sector handover zones or introducing severe degradation in the network performance. This in turn permits the selective replacement of a single sector antenna rather than the wholesale replacement of all sector antennas in a region, leading to lower transitional costs and the ability to provide a focused approach to capacity planning.

摘要翻译： 公开了一种用于增加用于扇区化的蜂窝无线网络的基站的容量和性能的方法和装置，其中扇区天线中的一个由新的子扇区天线替换或替换，该新的子扇区天线生成多个不对称的子扇区覆盖区域 它们共同地基本上覆盖被替换的扇形天线的覆盖区域。 使用不对称覆盖区域允许总覆盖区域紧密地近似于对称扇区覆盖区域，而不会产生过大的子扇区切换区域或引入网络性能的严重劣化。 这又允许选择性地更换单个扇区天线，而不是批量更换一个区域中的所有扇区天线，从而降低过渡成本，并提供集中的方法进行容量规划。

公开(公告)号：US07429949B1

公开(公告)日：2008-09-30

申请号：US11890136

申请日：2007-08-03

申请人： Hafedh Trigui

发明人： Hafedh Trigui

IPC分类号： H01Q3/00

CPC分类号： H01Q3/30

摘要： A method and system for generating beamforming weights for a plurality of antenna elements is disclosed. The invention consists of generating broadened nulls in a direction of arrival corresponding to one or more co-channel interference signals. The broadened nulls permit deviations in the measurement of the direction of arrival or variations therein. The increased information content inherent in generating the broadened nulls is accommodated by postulating the existence of a virtual augmented antenna array comprising the antenna elements of the physical array and a plurality of additional virtual elements. The beamforming weights for the elements of the augmented array are truncated down prior to translation to the size of the physical array and are applied to create the desired broadened nulls and thereby improve system performance.

摘要翻译： 公开了一种用于生成多个天线元件的波束形成权重的方法和系统。 本发明包括在与一个或多个同信道干扰信号相对应的到达方向上产生加宽的零点。 扩大的零点允许测量到达方向或其中的变化的偏差。 通过假设存在包括物理阵列的天线元件和多个附加虚拟元件的虚拟增强天线阵列，可以适应生成扩展空值所固有的增加的信息内容。 扩展阵列的元素的波束成形权重在转换为物理阵列的大小之前被截断，并被应用于创建所需的扩展空值，从而提高系统性能。

公开(公告)号：US20070258411A1

公开(公告)日：2007-11-08

申请号：US11784384

申请日：2007-04-05

申请人： Hafedh Trigui

发明人： Hafedh Trigui

IPC分类号： H04B7/216

CPC分类号： H04W16/28 ,  H01Q3/2611

摘要： A method and apparatus for performing adaptive null steering in a slow frequency hopping environment. Where base stations have smart beamforming antenna capability and are interconnected by a base station controller, thus accommodating cyclic and pseudo-random frequency hopping, each base station forwards information on arrival time, frequency and received power of all subscriber communications and co-channel interferers to the controller for correlation. Periodicity information relating to co-channel interferers is returned to the applicable base station, to enable the generation of a null in the direction of arrival of the interferer. Where few base stations have smart beamforming capability, frequency hopping is cyclic only, and each base station generates its own periodicity information. Base stations may also calculate direction of arrival and time of arrival information, and forward this to the controller, if applicable. The invention enhances network capabilities including a subscriber localizing capability hitherto unavailable to network operators.

摘要翻译： 一种用于在慢跳频环境中执行自适应零转向的方法和装置。 在基站具有智能波束成形天线能力并且由基站控制器互连的情况下，每个基站转发关于所有用户通信和同信道干扰的到达时间，频率和接收功率的循环和伪随机跳频信息 控制器进行相关。 与同信道干扰源有关的周期性信息返回到适用的基站，以便能够在干扰源的到达方向上生成零。 在几乎没有基站具有智能波束形成能力的情况下，跳频是循环的，并且每个基站产生其自己的周期性信息。 基站还可以计算到达方向和到达时间信息，并将其转发给控制器（如果适用）。 本发明增强了网络能力，包括迄今为止对网络运营商不可用的用户定位能力。

公开(公告)号：US08311582B2

公开(公告)日：2012-11-13

申请号：US12094299

申请日：2007-03-19

申请人： Hafedh Trigui ,  Stuart J. Dean ,  John Litva

发明人： Hafedh Trigui ,  Stuart J. Dean ,  John Litva

IPC分类号： H04M1/00

CPC分类号： H04W16/24

摘要： A method and apparatus for increasing capacity and performance of a base station for a sectorized cellular wireless network is disclosed in which one of the sector antennas is replaced or supplanted by a novel sub-sector antenna that generates a plurality of asymmetrical sub-sector coverage areas that collectively substantially cover the coverage area of the replaced sector antenna. The use of asymmetrical coverage areas permits the total coverage area to closely approximate the symmetrical sector coverage area without creating excessively large sub-sector handover zones or introducing severe degradation in the network performance. This in turn permits the selective replacement of a single sector antenna rather than the wholesale replacement of all sector antennas in a region, leading to lower transitional costs and the ability to provide a focused approach to capacity planning.

摘要翻译： 公开了一种用于增加用于扇区化的蜂窝无线网络的基站的容量和性能的方法和装置，其中扇区天线中的一个由新的子扇区天线替换或替换，该新的子扇区天线生成多个不对称的子扇区覆盖区域 它们共同地基本上覆盖被替换的扇形天线的覆盖区域。 使用不对称覆盖区域允许总覆盖区域紧密地近似于对称扇区覆盖区域，而不会产生过大的子扇区切换区域或引入网络性能的严重劣化。 这又允许选择性地更换单个扇区天线，而不是批量更换一个区域中的所有扇区天线，从而降低过渡成本，并提供集中的方法进行容量规划。

公开(公告)号：US20090091499A1

公开(公告)日：2009-04-09

申请号：US12293183

申请日：2007-03-09

申请人： Stuart J. Dean

发明人： Stuart J. Dean

IPC分类号： H01Q1/38

CPC分类号： H01Q9/0407 ,  H01Q1/38

摘要： A patch radiator for use in beamformed or steerable antenna systems which maximizes upper frequency limit and simultaneously minimizes the lower frequency limit, by providing an annular patch configuration in which a central region of the patch element is devoid of material, whereby this central region is of a different shape from the shape of the exterior perimeter of the patch element. One possible configuration of such a patch radiator comprises a square exterior shape, enclosing a central circular region of removed material. In this manner, the upper frequency limit threshold tends to rise as the interior annular perimeter is reduced. Preferably, the exterior and interior perimeters have no interior angles of more than 180°.

摘要翻译： 一种用于波束成形或可操纵天线系统的贴片辐射器，其通过提供一种环形贴片配置使得上限频率最大化并同时最小化频率下限，其中贴片元件的中心区域没有材料，由此该中心区域 与补片元件的外周的形状不同的形状。 这种贴片辐射器的一种可能的结构包括正方形的外部形状，包围去除材料的中心圆形区域。 以这种方式，当内部环形周长减小时，上限频率阈值倾向于上升。 优选地，外部和内部周边没有大于180°的内角。

公开(公告)号：US20080012754A1

公开(公告)日：2008-01-17

申请号：US11784099

申请日：2007-04-04

申请人： Shiwei Gao

发明人： Shiwei Gao

IPC分类号： H01Q3/00

CPC分类号： H04W16/28 ,  H04W16/02

摘要： A novel method and apparatus for synthesizing beams in a multi-beam antenna system is disclosed. In such systems, adjacent beams typically have overlapping coverage areas. When a common signal is broadcast across a plurality of such overlapping beams, the introduction of phase differences between adjacent beams may destructively interfere, resulting in reduced coverage area, significant fading or possibly even loss of the signal. The present invention introduces a temporal delay in alternating beams so that even if a common signal is broadcast, the temporal delay will minimize the likelihood of significant destructive interference. The delay may correspond to a symbol period, a multiple or fraction thereof, or a chirp, depending upon the encoding scheme employed. Where no common signal is to be broadcast, the imposition of a delay on a subset of the beams has negligible effect.

摘要翻译： 公开了一种用于在多波束天线系统中合成波束的新颖方法和装置。 在这样的系统中，相邻的波束通常具有重叠的覆盖区域。 当跨越多个这样的重叠波束广播公共信号时，相邻波束之间的相位差的引入可能会破坏性地干扰，导致减少的覆盖区域，信号的显着衰落或甚至可能的丢失。 本发明引入交替光束的时间延迟，使得即使广播公共信号，时间延迟将使显着的相消干涉的可能性最小化。 取决于所使用的编码方案，延迟可以对应于符号周期，其倍数或分数，或啁啾。 在没有公共信号要广播的情况下，在波束的子集上施加延迟可以忽略不计。

公开(公告)号：US20070249404A1

公开(公告)日：2007-10-25

申请号：US11784090

申请日：2007-04-04

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04M1/00

CPC分类号： H01Q3/2605 ,  H04B7/086

摘要： A novel system for performing adaptive beamforming in a slow frequency hopping environment is disclosed. The presence of slow frequency hopping means that conventional mechanisms of using beamforming weights from previous time slots are inapplicable. The inventive system calculates a series of beamforming weights from an estimate of the spatial location of the mobile subscriber in the previous frame, which is impervious to slow frequency hopping and the data that precedes the training sequence data of the current frame. The beamforming weights and the spatial location of the mobile are updated with the arrival of the entirety of the current frame. The initial beamforming weight estimate is sufficient to permit processing on a real-time basis of the current frame even if the inventive system is implemented as an appliqué system interposed between the antenna array and a conventional base station.

摘要翻译： 公开了一种用于在慢跳频环境中执行自适应波束成形的新颖系统。 慢跳频的存在意味着使用来自前一时隙的波束成形权重的常规机制是不适用的。 本发明的系统从先前帧中的移动用户的空间位置的估计中计算出一系列波束形成权重，其不可避免慢跳频和在当前帧的训练序列数据之前的数据。 随着当前帧的整体的到达，波束成形权重和移动台的空间位置被更新。 即使本发明的系统被实现为插入在天线阵列和常规基站之间的贴布系统，初始波束形成权重估计足以允许基于当前帧的实时处理。

公开(公告)号：US20070249403A1

公开(公告)日：2007-10-25

申请号：US11784089

申请日：2007-04-04

申请人： Shiwei Gao ,  Hafedh Trigui

发明人： Shiwei Gao ,  Hafedh Trigui

IPC分类号： H04M1/00

CPC分类号： H04W16/28 ,  H04W84/12

摘要： A novel system is disclosed for WLAN applications. The inventive system mitigates the problem of interference by overlaying an omni-directional pattern with a plurality of directional beams, where each beam covers only part of the serving area defined by the omni-directional pattern. After an initial communication from the subscriber stations along the omni-directional pattern, the directional beam that provides the best signal quality is determined and the access point thereafter communicates with that subscriber station using only the beam with the best signal quality. The inventive concept can be expanded to encompass MIMO WLAN systems.

摘要翻译： 公开了一种用于WLAN应用的新颖系统。 本发明的系统通过用多个定向波束覆盖全向图案来缓解干扰问题，其中每个波束仅覆盖由全向图案定义的服务区域的一部分。 在沿着全向模式从用户站进行初始通信之后，确定提供最佳信号质量的定向波束，然后该接入点仅使用具有最佳信号质量的波束与该用户台进行通信。 本发明的概念可以扩展到包括MIMO WLAN系统。