公开(公告)号：US06744163B2

公开(公告)日：2004-06-01

申请号：US10053879

申请日：2002-01-24

申请人： Hidetoshi Kajiwara ,  Hiroshi Iwai

发明人： Hidetoshi Kajiwara ,  Hiroshi Iwai

IPC分类号： H02K706

CPC分类号： H02K7/06

摘要： A vibration type brushless motor A1 in a structure of brushless motor having an outer rotor type core is composed of a shaft 3 of which a bottom end 3a is held by a bearing member 6 so as to rotate freely and a top end 3b is fixed to a center of rotation of a rotor yoke 1, a ring core 4 arranged around the shaft 3 and a rotor yoke 1 having a side section 1b of which a part is cut off radially to the outer circumference direction from the center fixed with the top end 3b of the shaft 3, wherein a semi-annular magnet 2 is fixed to the rotor yoke 1 along the side section 1b with facing the ring core 4.

摘要翻译： 具有外转子型铁心的无刷电动机的结构中的振动型无刷电动机A1由轴3构成，轴3的下端3a被轴承部件6保持以自由旋转，顶端3b固定在 转子轭铁1的旋转中心，绕轴3配置的环形铁心4和转子轭铁1，转子轭铁1具有侧面部分1b，该侧面部分1b从固定有顶端的中心沿着外周方向径向切除 3b，其中半环形磁体2沿着侧面1b与环形铁芯4相对固定到转子轭铁1上。

公开(公告)号：US08754820B2

公开(公告)日：2014-06-17

申请号：US11951153

申请日：2007-12-05

申请人： Hiroshi Iwai ,  Atsushi Yamamoto ,  Tsutomu Sakata ,  Satoru Amari

发明人： Hiroshi Iwai ,  Atsushi Yamamoto ,  Tsutomu Sakata ,  Satoru Amari

IPC分类号： H01Q21/00 ,  H01Q1/24

CPC分类号： H01Q1/243 ,  H01Q3/2605 ,  H01Q3/28 ,  H01Q3/36 ,  H01Q9/04

摘要： An antenna apparatus includes a first feeding point and a second feeding point provided at respective positions on an antenna element. The antenna element is excited through the first and second feeding points simultaneously so as to operate as a first antenna portion and a second antenna portion simultaneously, the first antenna portion and the second antenna portion correspond to the first and second feeding points, respectively. The antenna element further includes, between the first and second feeding points, an electromagnetic coupling adjuster for making an amount of isolation between the first and second antenna portions.

摘要翻译： 天线装置包括设置在天线元件上的各个位置的第一馈电点和第二馈电点。 天线元件通过第一和第二馈电点同时激励，以便同时作为第一天线部分和第二天线部分工作，第一天线部分和第二天线部分别分别对应于第一和第二馈电点。 天线元件还包括在第一和第二馈电点之间的用于在第一和第二天线部分之间形成隔离量的电磁耦合调节器。

公开(公告)号：US08381404B2

公开(公告)日：2013-02-26

申请号：US12572900

申请日：2009-10-02

申请人： Hisayuki Aoshima ,  Hiroshi Iwai

发明人： Hisayuki Aoshima ,  Hiroshi Iwai

IPC分类号： B21D53/10

CPC分类号： F16C17/026 ,  B21D53/10 ,  F16C33/107 ,  F16C33/14 ,  F16C2220/20 ,  F16C2220/60 ,  F16C2220/82 ,  F16C2370/12 ,  Y10T29/49636 ,  Y10T29/49639 ,  Y10T29/49707

摘要： A method manufacturing of a fluid dynamic bearing includes: forming a substantially linear groove having a length corresponding to a circumferential direction width of the dynamic pressure groove formed on the inner circumferential surface of a shaft housing hole portion, along the circumferential direction of a surface orthogonal to a first processing direction along the central axis direction of a work, by a byte that performs a micro alternating drive in a second processing direction orthogonal to the first processing direction; and extending the dynamic pressure groove that extends in the first processing direction by continuously forming the substantially linear grooves in the first processing direction by displacing the relative positions of the work and the byte in the first processing direction.

摘要翻译： 流体动力轴承的制造方法包括：沿垂直于表面的表面的圆周方向形成长度对应于形成在轴容纳孔部的内周面上的动压槽的圆周方向宽度的大致直线状的槽 通过在与第一处理方向正交的第二处理方向上执行微交替驱动的字节，沿着工件的中心轴方向到第一处理方向; 并且通过在第一处理方向上移动工件和字节的相对位置，通过在第一处理方向上连续地形成大致直线的沟槽来延伸沿第一处理方向延伸的动压槽。

公开(公告)号：US08200302B2

公开(公告)日：2012-06-12

申请号：US12517316

申请日：2008-09-30

申请人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Tsutomu Sakata ,  Yoshio Koyanagi ,  Toshiteru Hayashi

发明人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Tsutomu Sakata ,  Yoshio Koyanagi ,  Toshiteru Hayashi

IPC分类号： H04M1/00

CPC分类号： H01Q1/243 ,  H01Q9/0421 ,  H01Q9/16 ,  H04M1/0216

摘要： A housing antenna is small enough in size so as to be accommodated in a mobile device. The antenna has a number of feeding points that allow the antenna to operate as a number of antenna elements. The antenna is capable of realizing high speed communication by increasing communication capacity.

摘要翻译： 外壳天线的尺寸足够小，以便容纳在移动设备中。 天线具有允许天线作为多个天线元件工作的多个馈电点。 该天线能够通过增加通信能力来实现高速通信。

公开(公告)号：US08190104B2

公开(公告)日：2012-05-29

申请号：US12361770

申请日：2009-01-29

申请人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Tsutomu Sakata ,  Yoshio Koyanagi ,  Toshiteru Hayashi

发明人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Tsutomu Sakata ,  Yoshio Koyanagi ,  Toshiteru Hayashi

IPC分类号： H04B1/44

CPC分类号： H04B7/0808 ,  H04B7/0825 ,  H04B7/0831 ,  H04B7/0874

摘要： A controller of a MIMO antenna apparatus calculates a current transmission capacity based on signal levels detected by a signal level detector circuit. The controller calculates an estimated transmission capacity assuming that at least one of antenna elements currently connected to a MIMO modulator and demodulator circuit is changed to a further antenna element not connected to the MIMO modulator and demodulator circuit, based on the detected signal levels and degrees of electromagnetic coupling stored in a degree-of-coupling memory. The controller controls a switch circuit to connect the further antenna element to the MIMO modulator and demodulator circuit when the current transmission capacity becomes lower than the estimated transmission capacity.

摘要翻译： MIMO天线装置的控制器基于由信号电平检测器电路检测到的信号电平来计算当前传输容量。 控制器计算估计的传输容量，假设当前连接到MIMO调制器和解调器电路的天线元件中的至少一个被改变为未连接到MIMO调制器和解调器电路的另外的天线元件，基于检测到的信号电平和 存储在耦合度存储器中的电磁耦合。 当当前传输容量变得低于估计的传输容量时，控制器控制开关电路将另外的天线元件连接到MIMO调制器和解调器电路。

公开(公告)号：US20100195753A1

公开(公告)日：2010-08-05

申请号：US12670200

申请日：2009-05-19

申请人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Satoru Amari ,  Tsutomu Sakata

发明人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Satoru Amari ,  Tsutomu Sakata

IPC分类号： H04L1/02

CPC分类号： H04B7/04 ,  H01Q1/243 ,  H01Q9/0407 ,  H01Q13/10 ,  H01Q21/28

摘要： A MIMO antenna apparatus is provided with: an upper housing having slits; first feed points through which the upper housing itself is excited as first antennas; second feed points through which the slits are excited as second antennas; switch circuits, each of which is connected to one of the first feed points and one of the second feed points, and connects one of the two feed points to an A/D converter circuit-; a signal level detector circuit detecting signal levels of received radio signals; and a controller that controls the switches to change a feed point connected to the A/D converter circuit, when the detected signal level is less than or equal to a predetermined threshold value. The slits are located between the first antennas.

摘要翻译： MIMO天线装置设置有：具有狭缝的上壳体; 第一馈电点，上壳体本身被激发作为第一天线; 狭缝被第二天线激励的第二馈电点; 开关电路，每个开关电路连接到第一馈电点中的一个和第二馈电点中的一个，并将两个馈电点中的一个连接到A / D转换器电路; 信号电平检测电路，检测所接收的无线电信号的信号电平; 以及控制器，当检测到的信号电平小于或等于预定阈值时，控制开关改变连接到A / D转换器电路的馈电点。 狭缝位于第一天线之间。

公开(公告)号：US07557761B2

公开(公告)日：2009-07-07

申请号：US12015005

申请日：2008-01-16

申请人： Hiroshi Iwai ,  Atsushi Yamamoto ,  Tsutomu Sakata ,  Toshiteru Hayashi ,  Kenichi Yamada

发明人： Hiroshi Iwai ,  Atsushi Yamamoto ,  Tsutomu Sakata ,  Toshiteru Hayashi ,  Kenichi Yamada

IPC分类号： H01Q1/24

CPC分类号： H01Q1/521 ,  H01Q5/321 ,  H01Q9/30 ,  H01Q21/28

摘要： An array antenna apparatus includes a first feeding element having a first feed point, a second feeding element having a second feed point, and a first parasitic element electrically connected to the respective first and second feeding elements. In a first frequency band, respective resonances in the feeding elements occur independent of each other, by eliminating electromagnetic mutual coupling between the feeding elements, and exciting the first feeding element through the first feed point as well as exciting the second feeding element through the second feed point. In a second frequency band lower than the first frequency band, a loop antenna having a certain electrical length is formed by the first and second feeding elements and the first parasitic element, and a resonance of the loop antenna substantially occurs by exciting the first feeding element through the first feed point.

摘要翻译： 阵列天线装置包括具有第一馈电点的第一馈电元件，具有第二馈电点的第二馈电元件以及电连接到相应的第一和第二馈电元件的第一寄生元件。 在第一频带中，通过消除馈电元件之间的电磁互耦，并且通过第一馈电点激励第一馈电元件以及通过第二馈电元件激励第二馈电元件，馈送元件中的相应谐振彼此独立地发生， 饲料点 在低于第一频带的第二频带中，具有一定电长度的环形天线由第一和第二馈电元件和第一寄生元件形成，并且环形天线的谐振基本上通过激励第一馈电元件 通过第一个饲料点。

公开(公告)号：US07528674B2

公开(公告)日：2009-05-05

申请号：US10594522

申请日：2006-01-24

申请人： Akira Kato ,  Koichi Ogawa ,  Hiroshi Iwai ,  Atsushi Yamamoto

发明人： Akira Kato ,  Koichi Ogawa ,  Hiroshi Iwai ,  Atsushi Yamamoto

IPC分类号： H03H7/38

CPC分类号： H04B1/18

摘要： There is provide a mobile radio apparatus capable of suppressing a mismatching loss, and increasing a transmission/reception sensitivity by means of instantly and adaptively matching the impedance between the antenna and the transmission/reception circuit whatever situation a mobile radio apparatus, such as a mobile phone or the like, may be. In a mobile radio apparatus (1), when starting control of the matching circuit (102), a control section (105) evaluates an initial chromosome stored in a storage section (106), and if there is an initial chromosome for providing an impedance matching, controls the matching circuit (102) so as to have a load value corresponding to this initial chromosome. If there is no initial chromosome for providing the impedance matching, the control section (105) evolves the initial chromosome with a genetic algorithm, derives a chromosome for providing the impedance matching, and controls the matching circuit (102) so as to have a load value corresponding to the derived chromosome.

摘要翻译： 提供一种能够抑制失配损失的移动无线电设备，并且通过立即且自适应地匹配天线和发送/接收电路之间的阻抗来增加发送/接收灵敏度，无论移动无线电设备如移动 电话等，可能是。 在移动无线电设备（1）中，当启动匹配电路（102）的控制时，控制部分（105）评估存储在存储部分（106）中的初始染色体，并且如果存在用于提供阻抗的初始染色体 匹配，控制匹配电路（102）以具有对应于该初始染色体的负载值。 如果没有用于提供阻抗匹配的初始染色体，则控制部分（105）用遗传算法演化初始染色体，导出染色体以提供阻抗匹配，并且控制匹配电路（102）以具有负载 对应于衍生染色体的值。

公开(公告)号：US20080062065A1

公开(公告)日：2008-03-13

申请号：US11889742

申请日：2007-08-16

申请人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Tsutomu Sakata

发明人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Tsutomu Sakata

IPC分类号： H01Q1/50

CPC分类号： H01Q19/30 ,  H01Q1/243 ,  H01Q19/32

摘要： A MIMO antenna apparatus includes a plurality of feeding antenna elements, a parasitic element electromagnetically coupled to each feeding antenna element, and a variable impedance load element connected to the parasitic element. A signal level comparator circuit detects received signal levels of received wireless signals and compares the received signal levels with each other, and thus detects the minimum received signal level. A controller controls an impedance value of the variable impedance load element based on the received signal levels detected by the signal level comparator circuit, such that the received signal level of the wireless signal having the minimum received signal level is substantially maximized.

摘要翻译： MIMO天线装置包括多个馈电天线元件，电磁耦合到每个馈电天线元件的寄生元件和连接到寄生元件的可变阻抗负载元件。 信号电平比较器电路检测接收到的无线信号的接收信号电平，并将接收信号电平彼此进行比较，从而检测最小接收信号电平。 控制器基于由信号电平比较器电路检测到的接收信号电平来控制可变阻抗负载元件的阻抗值，使得具有最小接收信号电平的无线信号的接收信号电平基本上最大化。

公开(公告)号：US20070280297A1

公开(公告)日：2007-12-06

申请号：US11806821

申请日：2007-06-04

申请人： Toshifumi Nakatani ,  Hiroshi Iwai

发明人： Toshifumi Nakatani ,  Hiroshi Iwai

IPC分类号： H04H1/04

CPC分类号： H04B7/0822

摘要： Reception signals received by first to fourth antennas 11 to 14 are sequentially selected one by one repeatedly in accordance with first to fourth switches 31 to 34 being controlled by first to fourth switch control circuits 41 to 44, respectively, so as to be inputted to a signal shaping section 60. The reception signals having been shaped by the signal shaping section 60 are sampled by a sample-and-hold section 71 and AD-converted by an AD converter 72 in accordance with a time at which the reception signals are sequentially selected. The resultant signals are converted into parallel signals by a serial-parallel conversion section 73. Thus, the parallel signals are obtained as the reception signals of the first to the fourth antennas 11 to 14.

摘要翻译： 根据第一至第四开关31至34分别由第一至第四开关控制电路41至44控制的第一至第四天线11至14接收的接收信号被依次逐个选择，以被输入到 信号整形部60。 已经由信号整形部分60整形的接收信号由采样保持部分71采样，并且由AD转换器72根据接收信号被依次选择的时间进行AD转换。 所得到的信号通过串行 - 并行转换部分73转换成并行信号。 因此，获得并行信号作为第一至第四天线11至14的接收信号。