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11.发明授权Method and system for performing digital beam forming at intermediate frequency on the radiation pattern of an array antenna 有权在阵列天线的辐射图上以中频进行数字波束形成的方法和系统公开(公告)号：US07403156B2
公开(公告)日：2008-07-22
申请号：US10575855
申请日：2003-10-30
IPC分类号： H01Q3/00
CPC分类号： H01Q3/2605 , H04B7/0408 , H04B7/0617 , H04B7/086
摘要： A method of performing digital beam forming on the radiation pattern of an array antenna using a plurality of antenna elements, each antenna element being coupled to a signal processing chain. A weighting phase is used in which at least a complex weight coefficient is applied to a digital signal in a corresponding signal processing chain. The digital signal is an intermediate frequency digital signal, and the weighting phase has the following steps: a) duplicating the digital signal into a first and a second digital signal; b) processing the first and second digital signals by multiplying the first and second digital signals respectively by a real and an imaginary part of the complex weight coefficient; applying a Hilbert transform to that signal which is multiplied by the imaginary part of the complex weight coefficient; and c) combining the processed first and second digital signals into a weighted digital intermediate frequency signal by subtracting the second signal from the first signal.
摘要翻译： 使用多个天线元件在阵列天线的辐射图上执行数字波束形成的方法，每个天线元件耦合到信号处理链。 在相应的信号处理链中使用加权阶段，其中至少将复数加权系数应用于数字信号。 数字信号是中频数字信号，加权阶段具有以下步骤：a）将数字信号复制成第一和第二数字信号; b）通过将第一和第二数字信号分别乘以复权重系数的实部和虚部来处理第一和第二数字信号; 将希尔伯特变换应用于乘以复权重系数的虚部的信号; 以及c）通过从第一信号中减去第二信号将经处理的第一和第二数字信号组合成加权的数字中频信号。
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12.发明授权Device for crossing optical beams, in particular in an integrated optical circuit 有权用于交叉光束的装置，特别是在集成光学电路中公开(公告)号：US07346239B2
公开(公告)日：2008-03-18
申请号：US10506769
申请日：2002-03-06
申请人： Marco Romagnoli , Maurizio Tormen , Camilla Bonati
发明人： Marco Romagnoli , Maurizio Tormen , Camilla Bonati
CPC分类号： B82Y20/00 , G02B6/1225 , G02B6/125
摘要： A device for crossing optical beams. At least a first input optical waveguide is directed along a first axis, a second optical waveguide is directed along a second axis inclined with respect to the first axis, and a photonic crystal having a regular periodicity in an optical crossing region at the intersection of said first and second axis has, opposite the first and second input waveguides, a first and a second output waveguide to provide for exit beams.
摘要翻译： 用于交叉光束的装置。 至少第一输入光波导沿着第一轴指向，第二光波导沿着相对于第一轴倾斜的第二轴指向，并且在所述第一轴的交叉处的光交叉区域中具有规则周期的光子晶体 第一和第二轴线具有与第一和第二输入波导相对的第一和第二输出波导以提供出射光束。
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13.发明授权Method for configuring a communication network, related network architecture and computer program product therefor 有权用于配置通信网络，相关网络架构和计算机程序产品的方法公开(公告)号：US07286854B2
公开(公告)日：2007-10-23
申请号：US10562425
申请日：2003-06-27
申请人： Marco Ferrato , Enrico Giovanardi , Loris Paolo Stola , Valeria Dell'anna , Alessandro La Piana
发明人： Marco Ferrato , Enrico Giovanardi , Loris Paolo Stola , Valeria Dell'anna , Alessandro La Piana
IPC分类号： H04M1/00
摘要： A communication network includes a plurality of antennas and includes among the antennas at least one reconfigurable antenna adapted to serve communication traffic in a respective coverage area, the reconfigurable antenna having a radiation diagram exhibiting a plurality of selectively adjustable gain values for a set of directions, each direction in the set defining a propagation path between the antenna and a portion of the coverage area, determining, for each direction in the set, at least one value of communication traffic and at least one attenuation value over the propagation path, and selectively and independently alloting to each direction in the set a respective gain value as a function of at least one of the value of communication traffic and the attenuation value determined for that direction. The arrangement is adapted for use in communication networks such as second and third generation mobile communication networks employing electrically controllable antennas.
摘要翻译： 通信网络包括多个天线，并且在天线中包括适于在相应覆盖区域中服务通信业务的至少一个可重配置天线，所述可重新配置天线具有展示针对一组方向的多个可选择性调节的增益值的辐射图， 集合中的每个方向限定天线和覆盖区域的一部分之间的传播路径，为该集合中的每个方向确定通信业务的至少一个值和传播路径上的至少一个衰减值，以及选择性地和 根据通信业务的值和针对该方向确定的衰减值中的至少一个来独立地分配给每个方向的相应增益值。 该装置适用于采用电可控天线的通信网络，例如第二和第三代移动通信网络。
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公开(公告)号：US20070223085A1
公开(公告)日：2007-09-27
申请号：US11802011
申请日：2007-05-18
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier comprises at least a first and a second optical Raman-active fiber disposed in series with each other. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of said first and second group of frequencies extends over a pump frequency range having a width of at least the 40% of the Raman shift. The minimum and the maximum frequency in each of said first and second group of frequencies differ with each other of at most the 70% of said Raman shift.
摘要翻译： 拉曼放大器包括彼此串联布置的至少第一和第二光学拉曼 - 有源光纤。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 所述第一组和第二组频率的整体在具有至少为拉曼位移的40％的宽度的泵频率范围内延伸。 所述第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为所述拉曼位移的70％。
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公开(公告)号：US07253944B2
公开(公告)日：2007-08-07
申请号：US10522555
申请日：2002-07-31
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier having at least a first and a second optical Raman-active fiber disposed in series with each other is disclosed. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of the first and second group of frequencies extends over a pump frequency range having a width of at least 40% of the Raman shift. The minimum and the maximum frequency in each of the first and second group of frequencies differ from each other by at most 70% of the Raman shift.
摘要翻译： 公开了具有彼此串联布置的至少第一和第二光学拉曼有源光纤的拉曼放大器。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 整个第一组和第二组频率在具有拉曼位移的至少40％的宽度的泵频率范围内延伸。 第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为拉曼位移的70％。
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公开(公告)号：US07145646B2
公开(公告)日：2006-12-05
申请号：US10499809
申请日：2001-12-27
申请人： Paolo Martinelli , Franco Trespidi
发明人： Paolo Martinelli , Franco Trespidi
IPC分类号： G01N21/00
CPC分类号： G01M11/37 , C03B37/0253 , C03B2205/40 , G01L1/242 , G01L5/105
摘要： A process of contactless monitoring the tension in an optical fiber and a tension meter which enables contactliess measurement of the tension in a bare and in a coated optical fiber. By measuring the retardation induced by the birefringence of an optical fiber by means of a polarized light beam incident to the fiber at an angle between about 10° and 25° to the detection optical axis, it is possible to accurately measure tensions over a wide range, i.e., from less than about 10 g to about 450 g. The method enables monitoring the tension during the ramp-up of the drawing process and is particularly advantageous for the control of the drawing tension in manufacturing of NZD, multimode or special fibers. Accurate monitoring of the tension both on a bare and on a coated fiber can also be achieved.
摘要翻译： 一种无接触地监测光纤中的张力和张力计的过程，其能够在裸机和涂覆的光纤中进行无缝测量张力。 通过以与检测光轴成约10°至25°的角度入射到光纤的偏振光束测量由光纤的双折射引起的延迟，可以精确地测量宽范围内的张力 ，即小于约10g至约450g。 该方法能够在拉拔过程中监测张力，并且对于控制NZD，多模或特殊纤维制造过程中的拉伸张力特别有利。 也可以在裸露的和涂覆的纤维上精确地监测张力。
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公开(公告)号：US07116469B2
公开(公告)日：2006-10-03
申请号：US10499020
申请日：2001-12-21
IPC分类号： H01S3/30
CPC分类号： H01S3/302 , H01S3/06729 , H01S3/06741 , H01S3/094003 , H01S3/094073
摘要： A Raman amplifier having a microstructured fiber and at least one pump laser, optically connected to one end of the microstructured fiber. The pump laser is adapted for emitting a pump radiation at a wavelength λp, and the microstructured fiber has a silica-based core surrounded by a plurality of capillary voids extending in the axial direction of the fiber. The core of microstructured fiber has at least one dopant added to silica, the dopant being suitable for enhancing Raman effect.
摘要翻译： 具有微结构纤维和至少一个泵浦激光器的拉曼放大器，光学连接到微结构纤维的一端。 泵浦激光器适于发射波长λλ的泵浦辐射，并且微结构纤维具有由在纤维的轴向方向上延伸的多个毛细孔隙围绕的二氧化硅基核。 微结构纤维的核心具有添加到二氧化硅中的至少一种掺杂剂，该掺杂剂适用于增强拉曼效应。
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公开(公告)号：US07099069B2
公开(公告)日：2006-08-29
申请号：US10498868
申请日：2001-12-18
CPC分类号： G02F1/0305
摘要： An electro-optic (EO) device having a high-resistivity semiconducting crystal and a method of operating such a device. The local shielding of the externally applied field lowers the EO effect, which can be partially or completely inhibited particularly in the low-frequency regime, i.e., less than about 105 Hz. By holding a high-resistivity semiconducting crystal at a suitable temperature, EO response and efficiency are improved, in particular for light signals that are non-modulated or modulated at low frequencies. Preferably, the temperature at which the semiconducting crystal is held during functioning is between 50 and 150° C. Enhancement of the EO effect has been demonstrated also for EO devices operating at relatively large optical powers, i.e., larger than about 0.1 mW.
摘要翻译： 具有高电阻率半导体晶体的电光（EO）器件和操作这种器件的方法。 外部施加的场的局部屏蔽降低了EO效应，这可以部分地或完全地被抑制，特别是在低频状态下，即小于约10Hz。 通过在合适的温度下保持高电阻率半导体晶体，EO响应和效率得到改善，特别是对于在低频下未调制或调制的光信号。 优选地，半导体晶体在功能期间保持的温度为50-150℃。对于在相对大的光焦度（即大于约0.1mW）下操作的EO器件也已经证明了EO效应的增强。
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19.发明授权Method for managing the transfer of information packets across a wireless and routing nodes implementing it 有权用于管理跨越无线的信息分组的传送和实现它的路由节点的方法公开(公告)号：US08982857B2
公开(公告)日：2015-03-17
申请号：US12451837
申请日：2007-06-06
CPC分类号： H04W52/02 , H04W52/0219 , H04W74/06 , H04W84/18 , Y02D70/144 , Y02D70/162 , Y02D70/22
摘要： A wireless network includes permanently powered routing nodes and intermittently operating routing nodes. A polling procedure is used for transferring routing and data information packets from a permanently powered routing node to an intermittently operating routing node. In particular, when the permanently powered routing node has to transmit an information packet to the intermittently operating routing node, it stores the information packet in a memory; it waits until the intermittently operating routing node is able to receive information packets; and then it transmits the information packet to the intermittently operating routing node, and when the intermittently operating routing node has to transmit an information packet to the permanently powered routing node, it transmits immediately the information packet to the permanently powered routing node.
摘要翻译： 无线网络包括永久供电的路由节点和间歇操作的路由节点。 轮询过程用于将路由和数据信息分组从永久供电的路由节点传送到间歇运行的路由节点。 特别地，当永久供电的路由节点必须向间歇操作的路由节点发送信息分组时，它将信息分组存储在存储器中; 它等待直到间歇运行的路由节点能够接收信息包; 然后将信息包发送到间歇运行的路由节点，当间歇运行的路由节点必须向永久供电的路由节点发送信息包时，将信息包立即发送给永久供电的路由节点。
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20.发明授权Method and system for multiple antenna communications, related apparatus and corresponding computer program product 有权多天线通信方法与系统，相关设备及相应的计算机程序产品公开(公告)号：US08588710B2
公开(公告)日：2013-11-19
申请号：US12083103
申请日：2005-10-05
IPC分类号： H04B7/02
CPC分类号： H04B7/0671 , H04B7/04 , H04B7/0837 , H04B7/0894
摘要： A system for diversity processing two signals transmitted and/or received via two diversity antennas includes at least four respective propagation paths coupling the signals to the two diversity antennas. Diversity processing is primarily in the form of decorrelation achieved by means of time variable delay elements that apply time variable delays to the signals propagating over at least two of the propagation paths in the system. The related processing may take place either at RF or IF, or at baseband, whereby the time variable delays are applied by subjecting the baseband signals to multiplication by a complex signal.
摘要翻译： 用于分集处理经由两个分集天线发送和/或接收的两个信号的系统包括将信号耦合到两个分集天线的至少四个相应的传播路径。 分集处理主要是通过时间可变延迟元件实现的去相关的形式，其对通过系统中的至少两个传播路径传播的信号应用时间可变延迟。 相关处理可以在RF或IF或基带处进行，由此通过使基带信号乘以复数信号来应用时间可变延迟。
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