-
81.发明授权Wireless area network using frequency translation and retransmission based on modified protocol messages for enhancing network coverage 有权基于改进的协议消息的无线区域网络使用频率转换和重传，以增强网络覆盖公开(公告)号：US07200134B2
公开(公告)日：2007-04-03
申请号：US10529037
申请日：2003-10-01
IPC分类号： H04J1/06
CPC分类号： H04W88/04 , H04B7/15528 , H04W16/26 , H04W84/12
摘要： In a wireless communications network such as a WLAN, a frequency translating repeater (200, 204) facilitates and enhances wireless communication between a first communication device (100) and one or more second client unit (104, 105) using frequency translation and retransmission based on modified protocol messages (410). A DS parameter message (310) may include a frequency channel intended for use between one or more of repeaters (200, 204) and client units (104, 105) but does not include the frequency channel between one or more of repeaters (200, 204) and the first communication device (100).
摘要翻译： 在诸如WLAN的无线通信网络中，频率转换中继器（200,204）利用频率转换和基于重传的方式促进并增强了第一通信设备（100）和一个或多个第二客户端单元（104,105）之间的无线通信 修改的协议消息（410）。 DS参数消息（310）可以包括旨在在一个或多个中继器（200,204）和客户端单元（104,105）之间使用的频率信道，但不包括一个或多个中继器（200,104）之间的频率信道， 204）和第一通信设备（100）。
-
82.发明授权Frequency translating repeater with low cost high performance local oscillator architecture 有权具有低成本高性能本地振荡器架构的频率转换中继器公开(公告)号：US07187904B2
公开(公告)日：2007-03-06
申请号：US11143927
申请日：2005-06-03
IPC分类号： H04B7/15
CPC分类号： H04B7/15528 , H04B7/12
摘要： A frequency translating repeater (120) for use in a time division duplex (TDD) radio protocol communications system includes local oscillator (LO) circuits (210, 310, and 410) to facilitate repeating by providing isolation, reduced phase noise, reduced pulling, and the like. Tunable LOs (441, 442) can be directly coupled to down-converters (413, 414) and up-converters (426, 427) for increased isolation, reduced phase noise, less stringent frequency accuracy, and a reduced potential for pulling.
摘要翻译： 用于时分双工（TDD）无线电协议通信系统的频率转换中继器（120）包括本地振荡器（LO）电路（210,310和410），以便通过提供隔离，降低的相位噪声，减小的拉取， 等等。 可调谐LO（441,442）可以直接耦合到下变频器（413,414）和上变频器（426,427），以增加隔离度，降低相位噪声，降低频率精度，降低拉电位。
-
公开(公告)号：US07015773B2
公开(公告)日：2006-03-21
申请号：US09774534
申请日：2001-01-31
IPC分类号： H01P3/00
CPC分类号： H01P1/185
摘要： A varactor based phase shifter that increases phase shift range using a lower characteristic impedance between quadrature ports than is used at its input/output ports. The circuit makes use of a four port coupler arrangement that imbeds a quarter wave impedance transformation between the input port and the quadrature ports as well as between the quadrature ports and the output port. The characteristic impedance across the quadrature ports is therefore less than the characteristic impedance across the input and output ports. In one implementation, reducing a characteristic input/output impedance of 50 to a 20 ohm quadrature port impedance results in a phase shift range increase of more than 50%.
-
公开(公告)号：US06911879B2
公开(公告)日：2005-06-28
申请号：US10691198
申请日：2003-10-22
CPC分类号： H01P1/185
摘要： A varactor based phase shifter that increases phase shift range using a lower characteristic impedance between quadrature ports than is used at its input/output ports. The circuit makes use of a four port coupler arrangement that imbeds a quarter wave impedance transformation between the input port and the quadrature ports as well as between the quadrature ports and the output port. The characteristic impedance across the quadrature ports is therefore less than the characteristic impedance across the input and output ports. In one implementation, reducing a characteristic input/output impedance of 50 to a 20 ohm quadrature port impedance results in a phase shift range increase of more than 50%.
摘要翻译： 基于变容二极管的移相器，使用正交端口之间的较低特性阻抗比在其输入/输出端口使用的相位移范围更大。 该电路利用四端口耦合器布置，其在输入端口和正交端口之间以及正交端口和输出端口之间嵌入四分之一波阻抗变换。 因此，正交端口之间的特性阻抗小于输入和输出端口上的特性阻抗。 在一个实现中，将特性输入/输出阻抗降低到20欧姆正交端口阻抗导致相移范围增加超过50％。
-
公开(公告)号：US06515635B2
公开(公告)日：2003-02-04
申请号：US09846693
申请日：2001-05-01
IPC分类号： H01Q1910
CPC分类号： H01Q3/242 , H01Q19/32 , H01Q21/205
摘要： A directive antenna includes plural antenna elements in an antenna assemblage. A feed network connected to the antenna elements includes at least one switch to select a state of one of the antenna elements to be in an active state in response to a control signal. The other antenna elements are in a passive state, electrically coupled to an impedance to be in a reflective mode. The antenna elements in the passive state are electromagnetically coupled to the active antenna element, allowing the antenna assemblage to directionally transmit and receive signals. The directive antenna may further include an assisting switch associated with each antenna element to assist coupling the antenna elements, while in the passive state, to the respective impedances. The antenna assemblage may be circular for a 360° discrete scan in N directions, where N is the number of antenna elements. The directive antenna is suitable for use in a high data rate network having greater than 50 kbits per second data transfer rates, where the high data rate network may use CDMA2000, 1eV-DO, 1Extreme, or other such protocol.
摘要翻译： 指示天线包括天线组合中的多个天线元件。 连接到天线元件的馈电网络包括至少一个开关，用于响应于控制信号选择一个天线元件处于活动状态的状态。 其他天线元件处于被动状态，电耦合到处于反射模式的阻抗。 处于被动状态的天线元件与有源天线元件电磁耦合，允许天线组件定向发射和接收信号。 指示天线还可以包括与每个天线元件相关联的辅助开关，以帮助天线元件在被动状态下耦合到相应的阻抗。 天线组合可以是N个方向上的360°离散扫描的圆形，其中N是天线元件的数量。 指令天线适用于高数据速率网络，每秒数据传输速率大于50kbits，高数据速率网络可能使用CDMA2000,1eV-DO，1Extreme或其他此类协议。
-
公开(公告)号：US06448938B1
公开(公告)日：2002-09-10
申请号：US09879807
申请日：2001-06-12
IPC分类号： H01Q2160
CPC分类号： H04B7/086 , H01Q1/246 , H01Q3/26 , H01Q5/50 , H01Q21/0018 , H01Q25/00 , H04B7/0617
摘要： A phased array antenna provides a subscriber unit with an ability to transmit and receive signals in different directions to allow for optimum gain in both directions, simultaneously. In this way, refraction and multipath effects resulting from communication signals operating at different frequencies can be compensated for to improve gain in both the forward and reverse links. Frequency selective components are coupled to respective antenna elements. At least two weighting structures are coupled to the frequency selective components to produce independently steerable beams having spectrally separated signals. The weighting structures may include phase shifting elements to steer the beams independently and include at least one variable gain amplifying component to independently amplify the signals received by or transmitted by the respective antenna, thereby optimizing the respective shapes of the beams. By having independently steerable and shapable beams, the directive antenna is attractive for use in a multi-band and/or multipath environment, same frequency or spread spectrum network.
摘要翻译： 相控阵天线为用户单元提供了在不同方向发送和接收信号的能力，以同时实现两个方向的最佳增益。 以这种方式，可以补偿由在不同频率操作的通信信号产生的折射和多径效应，以改善正向和反向链路中的增益。 频率选择分量耦合到相应的天线元件。 至少两个加权结构耦合到频率选择分量以产生具有频谱分离信号的独立可控的波束。 加权结构可以包括相移元件以独立地引导光束，并且包括至少一个可变增益放大分量以独立地放大由相应天线接收或发射的信号，从而优化波束的相应形状。 通过具有独立的可导向和可成形的光束，指令天线对于在多频带和/或多径环境，相同频率或扩频网络中使用是有吸引力的。
-
公开(公告)号：US06396456B1
公开(公告)日：2002-05-28
申请号：US09773277
申请日：2001-01-31
IPC分类号： H01Q928
CPC分类号： H01Q9/285 , H01Q1/38 , H01Q3/26 , H01Q21/062
摘要： A dipole antenna for use with a mobile subscriber unit in a wireless communications system. The antenna is fabricated with printed circuit board (PCB) photo-etching techniques for precise control of the printed structure to mass produce antenna elements with repeatable features. The antenna includes a planar substrate made of dielectric material. A conductive planar element layered on one side of the substrate, and a conductive planar ground patch is located on the other side of the substrate. The conductive planar element is located in an upper region of the substrate, while the location of the planar ground patch is offset from the conductive planar element in a lower region of the substrate. A feed strip is connected to the conductive planar element, extends from the element to a bottom edge of the substrate, and terminates at a bottom feed point. The conductive planar ground patch includes two portions. One portion extends from the midsection of the other portion to the bottom edge of the substrate and provides a connection point for coupling the conductive planar ground patch to a ground plane which is aligned orthonormally to the substrate. Capacitive coupling between the conductive planar element and the conductive planar ground patch creates a junction which provides an upper dipole feed point in a mid-region of the substrate such that the conductive planar element acts as a first element of an unbalanced dipole antenna and the conductive planar ground patch acts as a second element of the unbalanced dipole antenna. The unbalanced dipole antenna forms a beam which may be positionally directed along a horizon that is substantially parallel to the ground plane.
摘要翻译： 一种与无线通信系统中的移动用户单元一起使用的偶极天线。 天线采用印刷电路板（PCB）光蚀刻技术制造，用于精确控制印刷结构，大量生产具有可重复特征的天线元件。 天线包括由介电材料制成的平面基板。 层叠在基板一侧的导电平面元件和导电性平面接地片位于基板的另一侧。 导电平面元件位于衬底的上部区域中，而平面接地片的位置偏离衬底的下部区域中的导电平面元件。 馈电条连接到导电平面元件，从元件延伸到衬底的底部边缘，并且终止于底部馈电点。 导电平面接地片包括两部分。 一部分从另一部分的中部延伸到衬底的底部边缘，并且提供用于将导电平面接地贴片耦合到与基底正交对准的接地平面的连接点。 导电平面元件和导电平面接地片之间的电容耦合产生一个结，其在衬底的中间区域中提供上偶极馈电点，使得导电平面元件充当不平衡偶极天线的第一元件，并且导电 平面接地片作为非平衡偶极子天线的第二个元件。 不平衡偶极子天线形成可以沿着基本上平行于接地平面的水平线定位的光束。
-
公开(公告)号：US06369771B1
公开(公告)日：2002-04-09
申请号：US09773377
申请日：2001-01-31
IPC分类号： H01Q928
摘要： A dipole antenna for use with a mobile subscriber unit in a wireless network communications system. The antenna is fabricated with printed circuit board (PCB) photo-etching techniques for precise control of the printed structure. The dipole antenna includes a planar substrate made of dielectric material. A conductive planar element is layered on one side of the substrate in an upper region of the substrate, and a conductive planar ground patch is layered on the other side of the substrate in a lower region of the substrate. That is, the conductive planar element is stacked above the conductive planar ground patch. A feed strip is connected to the bottom of the conductive planar element, and extends from the element to a bottom edge of the substrate and terminates at a bottom feed point. Typically, the feed point is connected to a transmission line for transmitting signals to and receiving signals from the dipole antenna. The conductive planar ground patch includes a bottom end for connecting the ground patch to a ground plane upon which the dipole antenna is mounted. The ground plane is aligned orthonormal to the antenna. Capacitive coupling between the conductive planar element and the conductive ground patch creates a junction which provides an upper dipole feed point in a mid-region of the substrate such that the conductive planar element acts as one element of an unbalanced dipole antenna and the conductive planar ground patch acts as the other element of the unbalanced dipole antenna. The unbalanced dipole antenna forms a beam which may be positionally directed along a horizon that is substantially parallel to the ground plane.
摘要翻译： 一种与无线网络通信系统中的移动用户单元一起使用的偶极天线。 天线采用印刷电路板（PCB）光蚀刻技术制造，用于精确控制印刷结构。 偶极天线包括由介电材料制成的平面基板。 导电平面元件在基板的上部区域的一侧上层叠，并且在基板的下部区域中的基板的另一侧上层叠导电性平面接地片。 也就是说，导电平面元件堆叠在导电平面接地片上方。 馈电条连接到导电平面元件的底部，并且从元件延伸到衬底的底部边缘并终止于底部馈电点。 通常，馈电点连接到用于向偶极天线发送信号并从其接收信号的传输线。 导电平面接地片包括用于将接地片连接到安装偶极天线的接地平面的底端。 接地平面与天线对准正交。 导电平面元件和导电接地片之间的电容耦合产生一个结，其在衬底的中间区域中提供上偶极馈电点，使得导电平面元件充当不平衡偶极天线和导电平面接地的一个元件 补片作为非平衡偶极子天线的另一个元件。 不平衡偶极子天线形成可以沿着基本上平行于接地平面的水平线定位的光束。
-
公开(公告)号：US06304215B1
公开(公告)日：2001-10-16
申请号：US09579084
申请日：2000-05-25
IPC分类号： H01Q324
CPC分类号： H01Q3/2605 , H01Q1/246 , H04B7/0874
摘要： A method for setting optimal phase settings for a plurality of antenna elements of a subscriber unit in a CDMA cellular telephone system includes the steps of detecting a received pilot signal at each of the plurality of antenna elements, combining the received pilot signal detected at each of the plurality of antenna elements with a summation circuit to produce a combined received pilot signal, determining a quality metric for the combined received pilot signal and adjusting phase settings of at least one of the plurality of antenna elements on the subscriber unit in response to the quality metric of the received pilot signal. These steps are repeated until the determined quality metric of the combined received pilot signal reaches a maximum.
摘要翻译： 一种用于在CDMA蜂窝电话系统中为用户单元的多个天线单元设置最佳相位设置的方法包括以下步骤：在多个天线单元中的每一个处检测接收到的导频信号，将接收到的导频信号合并在每个 所述多个天线元件具有求和电路以产生组合的接收导频信号，确定组合的接收导频信号的质量度量，并响应于质量调整用户单元上的多个天线元件中的至少一个的相位设置 接收到的导频信号的度量。 重复这些步骤，直到组合的接收导频信号的确定的质量度量达到最大值。
-
公开(公告)号：US6100843A
公开(公告)日：2000-08-08
申请号：US210117
申请日：1998-12-11
CPC分类号： H01Q3/2605 , H01Q1/246 , H04B7/0874
摘要： An antenna apparatus which can increase capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements, each coupled to a respective programmable phase shifter. The phase of each antenna element is programmed for optimum reception during, for example, an idle mode which receives a pilot signal. The antenna array creates a beamformer for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference. Various techniques for determining the proper phase of each antenna element are accommodated.
-
-
-
-
-
-
-
-
-
搜索结果
90 条记录 (耗时 0.03 秒)