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：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：US4062015A

公开(公告)日：1977-12-06

申请号：US654018

申请日：1976-01-30

申请人： John Litva ,  Everett Earle Stevens

发明人： John Litva ,  Everett Earle Stevens

IPC分类号： G01S3/20 ,  G01S3/58

CPC分类号： G01S3/20

摘要： Methods are known for finding the bearing of an incoming radio signal. The system disclosed, which enables accurate bearings of radio signals to be obtained rapidly, employs a rosette array of directional Beverage antennas. The antennas are rapidly scanned to find which one is receiving the largest amplitude signal; this gives an approximate bearing. This signal is then compared with the signals of two adjacent antennas in the array and the results of these comparisons provide a measure of the amount and direction that the true bearing differs from the approximate bearing.

摘要翻译： 已知用于找到输入无线电信号的方位的方法。 所公开的使得能够快速获得无线电信号的精确轴承的系统采用定向饮料天线的玫瑰花排阵列。 快速扫描天线，找出正在接收最大振幅信号的天线; 这给出了一个近似的方位。 然后将该信号与阵列中的两个相邻天线的信号进行比较，并且这些比较的结果提供真实轴承与近似轴承不同的量和方向的量度。

公开(公告)号：US06317094B1

公开(公告)日：2001-11-13

申请号：US09316942

申请日：1999-05-24

申请人： Chen Wu ,  John Litva

发明人： Chen Wu ,  John Litva

IPC分类号： H01Q138

CPC分类号： H01Q21/064 ,  H01Q13/085 ,  H01Q21/0087

摘要： A suspended microstrip line structure for feeding a tapered slot antenna has a ground layer separated by means of an air gap from a dielectric slab with a strip line conductor feed running on the surface of the dielectric. The strip line may run along the surface of the dielectric which faces away from the ground layer, or the structure may be inverted such that the strip line runs along the surface of the dielectric which faces the ground layer. These suspended microstrip line structures exhibit lower transmission loss. In another embodiment, a printed transmission line having a slot in its ground layer feeds a tapered slot antenna element which lies in a plane which intersects, and so is not parallel to, the printed transmission line structure. The ground layer slots cut the current on the ground of the transmission line and couple energy from the line to the tapered slot antenna element. Altering the configuration of the ground layer slots allows the antenna to efficiently operate within different frequency bands without changing the dimensions or parameters of the tapered slot antenna or the printed transmission line. The printed transmission line is preferably a suspended microstrip line. One and two dimensional arrays of these antenna elements fed by a parallel beam forming network (BFN) may also be assembled.

摘要翻译： 用于馈送锥形缝隙天线的悬浮的微带线结构具有通过电介质板的气隙分离的接地层，带电导体馈电在电介质的表面上运行。 带状线可以沿着背离接地层的电介质的表面延伸，或者结构可以被倒置，使得带状线沿着面向接地层的电介质的表面延伸。 这些悬浮微带线结构表现出较低的传输损耗。 在另一个实施例中，在其接地层中具有槽的印刷传输线馈送一个锥形缝隙天线元件，其位于与印刷的传输线结构相交并且不平行的平面中。 接地层插槽切断传输线路的电流并将能量从线路耦合到锥形缝隙天线元件。 改变接地层插槽的配置允许天线在不改变锥形缝隙天线或印刷传输线的尺寸或参数的情况下在不同频带内有效地工作。 印刷传输线优选为悬浮微带线。 也可以组装由平行波束形成网络（BFN）馈送的这些天线元件的一维和二维阵列。

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：US20060040706A1

公开(公告)日：2006-02-23

申请号：US10535261

申请日：2003-11-18

申请人： Shiquan Wu ,  John Litva

发明人： Shiquan Wu ,  John Litva

IPC分类号： H04B1/06 ,  H04J3/06 ,  H04B7/00 ,  H04M1/00

CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q21/08 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/086 ,  H04B7/2662 ,  H04J3/0682 ,  H04L7/0041 ,  H04W24/00 ,  H04W52/42 ,  H04W56/0045 ,  H04W88/08

摘要： A method of beam forming is provided for an appliqué intelligent antenna system. The appliqué system uses a watchdog function to monitor broadcast channels of an existing mobile wireless base station to which it is attached. The appliqué system synchronizes itself in frequency and time to the base station. In GSM timing delays are used to prevent collision of timeslots from various mobile terminals. The appliqué system uses this time delay mechanism to compensate for its own processing delays so that its presence is transparent to the existing base station. Angle of arrival calculations are made to determining beamforming parameters. The antenna of the four element antenna system are separated by is (51/2−1)/2 times the wavelength. Angle of arrival for the strongest uplink multipath signal are used to direct the downlink beam.

摘要翻译： 提供了一种用于贴布式智能天线系统的波束形成方法。 贴花系统使用看门狗功能来监视其所连接的现有移动无线基站的广播信道。 贴花系统在频率和时间上与基站同步自身。 在GSM中，定时延迟用于防止来自各种移动终端的时隙的冲突。 贴花系统使用这种延时机制来补偿其自身的处理延迟，使其存在对现有基站是透明的。 进行角度计算是为了确定波束成形参数。 四元天线系统的天线由波长的（5×1/2/2）/ 2倍分开。 用于最强上行多径信号的到达角用于引导下行链路波束。

公开(公告)号：US6128471A

公开(公告)日：2000-10-03

申请号：US667951

申请日：1996-06-19

申请人： Peter J. Quelch ,  John Litva ,  Yi Hong Qi ,  Seleh Faruque

发明人： Peter J. Quelch ,  John Litva ,  Yi Hong Qi ,  Seleh Faruque

IPC分类号： H01Q9/04 ,  H04B7/24 ,  H04B7/14

CPC分类号： H01Q9/0407

摘要： Telecommunications system in which an outside antenna is positioned to direct radio signals in a divergent beam towards a predetermined wall surface area of a building. The outside antenna is sufficiently close to the building to require constancy of the radio signals to noise ratio of radio signals transmitted by the outside antenna. The signals transmitted at the building are received by patch antennas located on the wall surface area (e.g. in practice upon windows) for connection of the outside antenna to individual terminal outlets in the building. These terminal outlets are preferably connected by cable to the patch antennas, but the terminal outlets may be radio receivers.

摘要翻译： 电信系统，其中外部天线被定位成将发散光束中的无线电信号指向建筑物的预定的墙表面区域。 外部天线足够靠近建筑物，需要外部天线发射的无线电信号的无线电信噪比的恒定性。 在建筑物处传输的信号由位于壁表面区域（例如实际上在窗户上）的贴片天线接收，用于将外部天线连接到建筑物中的各个终端出口。 这些端子出口优选地通过电缆连接到贴片天线，但是终端插座可以是无线电接收器。