公开(公告)号：US20110206155A1

公开(公告)日：2011-08-25

申请号：US13126792

申请日：2009-07-02

申请人： Akinori Fujimura ,  Kazunari Kihira ,  Yasushi Sogabe

发明人： Akinori Fujimura ,  Kazunari Kihira ,  Yasushi Sogabe

IPC分类号： H04L1/02

CPC分类号： H04B7/086 ,  H04B7/18563 ,  H04W84/06

摘要： A communication apparatus that can suppress an increase in circuit size and reduce influence of interference, includes reception array antenna elements, a reception DBF network that generates a reception beam signal for forming M reception beams using a reception signal, and reception FBs that generate frequency split reception beam signals obtained by frequency-splitting the reception beam signal. The communication apparatus includes an interference-source detecting unit that stores, for each reception beam, an interference candidate beam area estimated based on an initial reception beam characteristic, calculates, based on the frequency split reception beam signals, a reception spectrum, and calculates, based on the reception spectrum and a reception spectrum of a reception beam to the interference candidate beam area, an interference source area. The reception DFB network generates a reception beam signal to perform null formation in the direction of the interference source area.

摘要翻译： 能够抑制电路尺寸的增加和减少干扰的影响的通信装置包括：接收阵列天线元件，使用接收信号生成接收波束信号的接收波束信号的接收DBF网络，以及产生频率分割的接收FB 通过对接收波束信号进行分频而获得的接收波束信号。 通信装置包括干扰源检测单元，对于每个接收波束，存储基于初始接收波束特性估计的干扰候补波束区域，根据频率分割接收波束信号，计算接收频谱， 基于接收频谱和对干扰候选波束区域的接收波束的接收频谱，干扰源区域。 接收DFB网络产生接收波束信号，以在干扰源区域的方向上执行无效形成。

公开(公告)号：US08542785B2

公开(公告)日：2013-09-24

申请号：US13126792

申请日：2009-07-02

申请人： Akinori Fujimura ,  Kazunari Kihira ,  Yasushi Sogabe

发明人： Akinori Fujimura ,  Kazunari Kihira ,  Yasushi Sogabe

IPC分类号： H03D1/04

CPC分类号： H04B7/086 ,  H04B7/18563 ,  H04W84/06

摘要： A communication apparatus that can suppress an increase in circuit size and reduce influence of interference, includes reception array antenna elements, a reception digital beam forming (DBF) network that generates a reception beam signal for forming M reception beams using a reception signal, and reception filter banks (FBs) that generate frequency split reception beam signals obtained by frequency-splitting the reception beam signal. The communication apparatus includes an interference-source detecting unit that stores, for each reception beam, an interference candidate beam area estimated based on an initial reception beam characteristic, calculates, based on the frequency split reception beam signals, a reception spectrum, and calculates, based on the reception spectrum and a reception spectrum of a reception beam to the interference candidate beam area, an interference source area. The reception DFB network generates a reception beam signal to perform null formation in the direction of the interference source area.

摘要翻译： 可以抑制电路尺寸增加并减少干扰影响的通信装置包括接收阵列天线元件，使用接收信号产生用于形成M个接收波束的接收波束信号的接收数字波束形成（DBF）网络，以及接收 滤波器组（FB），其生成通过对接收波束信号进行分频而获得的频率分割接收波束信号。 通信装置包括干扰源检测单元，对于每个接收波束，存储基于初始接收波束特性估计的干扰候补波束区域，根据频率分割接收波束信号，计算接收频谱， 基于接收频谱和对干扰候选波束区域的接收波束的接收频谱，干扰源区域。 接收DFB网络产生接收波束信号，以在干扰源区域的方向上执行无效形成。

公开(公告)号：US06788269B2

公开(公告)日：2004-09-07

申请号：US10257947

申请日：2003-03-03

申请人： Isamu Chiba ,  Kazunari Kihira ,  Rumiko Yonezawa ,  Shuji Urasaki

发明人： Isamu Chiba ,  Kazunari Kihira ,  Rumiko Yonezawa ,  Shuji Urasaki

IPC分类号： H01Q2100

CPC分类号： H01Q21/20 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q21/24 ,  H01Q25/00

摘要： There are disposed four antenna elements which are arranged circumferentially at regular intervals, and four 90-degree hybrids each having four terminals, two 90-degree hybrids which are arranged in parallel are connected in two stages, only one of the output terminals of an upstream 90-degree hybrid and only one of the input terminal of a downstream 90-degree hybrid cross each other and are connected to each other, and the four output terminals of the two downstream 90-degree hybrids and the four antenna elements are connected to each other; the passing phase between the terminals that cross each other within the respective 90-degree hybrids is set to 0 degree, and the passing phase between the terminals that are in parallel within the respective 90-degree hybrids is set to 90 degrees. As a result, the structure of the feed circuit can be simplified, and plural kinds of beams can be formed.

摘要翻译： 设置四个天线元件，其周期性地布置有规则的间隔，并且四个90度混合电路，每个具有四个端子，并联配置的两个90度混合电路分两个阶段连接，仅一个上游的输出端子 90度混合，并且下游90度混合的输入端中只有一个相互交叉并彼此连接，并且两个下游90度混合的四个输出端和四个天线元连接到每个 其他; 在相应的90度混合电路之间彼此交叉的端子之间的通过相位被设置为0度，并且在相应的90度混合电路内并联的端子之间的通过相位被设置为90度。 结果，可以简化馈电电路的结构，并且可以形成多种类型的光束。

公开(公告)号：US20100150013A1

公开(公告)日：2010-06-17

申请号：US12600841

申请日：2008-01-10

申请人： Yoshitaka Hara ,  Akinori Taira ,  Kenichi Tajima ,  Kazunari Kihira ,  Michiaki Takano ,  Kazuaki Ishioka ,  Yasunori Nouda

发明人： Yoshitaka Hara ,  Akinori Taira ,  Kenichi Tajima ,  Kazunari Kihira ,  Michiaki Takano ,  Kazuaki Ishioka ,  Yasunori Nouda

IPC分类号： H04J1/16 ,  H04J3/00 ,  H04W72/00

CPC分类号： H04L25/0224 ,  H04B17/12 ,  H04L27/2647 ,  H04W52/241 ,  H04W52/325

摘要： A calibration method according to the present invention includes a step of first channel estimating for transmitting a pilot signal from a first antenna and receiving the pilot signal at a second antenna different from the first antenna to calculate a first channel estimation value; a step of second channel estimating for transmitting a plot signal from the second antenna and receiving the pilot signal at the first antenna to calculate a second channel estimation value; and a step of correction coefficient calculating for calculating, by using the first and second channel estimation values, a correction coefficient.

摘要翻译： 根据本发明的校准方法包括：第一信道估计步骤，用于从第一天线发送导频信号，并在不同于第一天线的第二天线处接收导频信号，以计算第一信道估计值; 第二信道估计步骤，用于从第二天线发送绘图信号并在第一天线处接收导频信号，以计算第二信道估计值; 以及校正系数计算步骤，用于通过使用第一和第二信道估计值来计算校正系数。

公开(公告)号：US06404387B1

公开(公告)日：2002-06-11

申请号：US09868846

申请日：2001-07-18

申请人： Kazunari Kihira ,  Isamu Chiba

发明人： Kazunari Kihira ,  Isamu Chiba

IPC分类号： G01S316

CPC分类号： H04B7/0842 ,  H01Q3/2605 ,  H04B7/086

摘要： Since adaptive control has been made by using different reference characters every transmitter-receiver, it has been necessary to provide an adaptive control device every transmitter-receiver. Hereupon, an adaptive array antenna apparatus according to the invention provides a weighting control device for calculating a weight coefficient to control weighting processing so that electric power of array signals synthesized by applying weighting processing to signals received by antennas of a plurality of systems becomes minimum, and an adaptive control device for using the weight coefficient for application of weighting processing to thereby form null points of antenna directivity in a direction, along which interference signals having a greater electric power than that of desired signals arrive, to remove the interference signals and to output array signals to transmitter-receivers.

摘要翻译： 由于通过使用每个发射机 - 接收机的不同参考字符来进行自适应控制，所以必须为每个发射机 - 接收机提供自适应控制装置。因此，根据本发明的自适应阵列天线装置提供了一种加权控制装置，用于计算 权重系数以控制加权处理，使得通过对由多个系统的天线接收的信号应用加权处理而合成的阵列信号的电力变得最小，以及使用权重系数来应用加权处理从而形成空值的自适应控制装置 沿着与所需信号相比具有更大功率的干扰信号到达的方向上的天线方向性点去除干扰信号并将阵列信号输出到发射机 - 接收机。