公开(公告)号：US20130058435A1

公开(公告)日：2013-03-07

申请号：US13227264

申请日：2011-09-07

申请人： Toru Matsuura ,  Wayne S. Lee ,  Tomoya Urushihara ,  Toshifumi Nakatani

发明人： Toru Matsuura ,  Wayne S. Lee ,  Tomoya Urushihara ,  Toshifumi Nakatani

IPC分类号： H04L27/04 ,  H04L25/49

CPC分类号： H04L27/367 ,  H04L27/361

摘要： A transmitter includes: a decoder for transforming an IQ signal into a linear sum of two vectors which have non-negative coefficients, respectively, which form an angle of (π/4), and which are included in eight vectors representing directions indicated by eight angles of (−π/2), 0, (π/2), π, (−3π/4), (−π/4), (π/4), and (3π/4), respectively, and for outputting information upon magnitudes and angles of the two vectors; a phase generator for generating eight phase signals corresponding to phases of (−π/2), 0, (π/2), π, (−3π/4), (−π/4), (π/4), and (3π/4), respectively, and outputting the eight phase signals; and a selector for selecting two phase signals having phases equivalent to angles of the two vectors, from among the eight phase signals, and amplifying the two phase signals having been selected, based on the information upon the magnitudes and the angles, and outputting, as a plurality of amplification signals, the two phase signals having been amplified.

摘要翻译： 发射机包括：解码器，用于将IQ信号变换成分别具有非负系数的两个矢量的线性和，其形成角度（＆pgr / / 4），并且包括在表示由 （ - ＆pgr; / 2），0，（＆pgr; / 2），＆pgr;（-3＆pgr; / 4），（ - ＆pgr; / 4） / 4），并且用于根据两个向量的幅度和角度输出信息; 相位发生器，用于产生对应于（ - ＆pgr; / 2），0，（＆pgr; / 2），＆pgr;（-3＆pgr; / 4），（ - ＆pgr; / 4），（＆ ; / 4）和（3＆pgr; / 4），并输出八个相位信号; 以及选择器，用于从八个相位信号中选择具有相当于两个矢量的角度的相位的两相信号，并且基于关于幅度和角度的信息来放大已经被选择的两个相位信号，并输出为 多个放大信号，两相信号已被放大。

公开(公告)号：US08175199B2

公开(公告)日：2012-05-08

申请号：US11916000

申请日：2006-06-15

申请人： Toshifumi Nakatani

发明人： Toshifumi Nakatani

IPC分类号： H04L27/06

CPC分类号： H04B1/005 ,  H03D3/007 ,  H03J1/005 ,  H03J2200/10 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18

摘要： A wireless receiver realizes multi-band and multi-mode operations while reducing power consumption of a local oscillator. The receiver includes the local oscillator for discontinuously changing a band of a local oscillation signal corresponding to a frequency band of an RF signal to be received and outputting the local oscillation signal, a frequency converter for converting the RF signal into an IF signal by using the local oscillation signal, and a demodulator for demodulating the IF signal. The local oscillator detects a frequency variation range of the local oscillation signal, obtains a frequency equivalent to an integral multiple of a symbol rate from the frequency variation range, and outputs the local oscillation signal having a local oscillatory frequency, causing a center frequency of a channel to be received, which channel is included in the intermediate frequency signal, to be equivalent to the integral multiple of the symbol rate.

摘要翻译： 无线接收机实现多频和多模操作，同时降低本地振荡器的功耗。 接收机包括本地振荡器，用于不连续地改变与要接收的RF信号的频带对应的本地振荡信号的频带并输出本地振荡信号;频率转换器，用于通过使用该信号将RF信号转换成IF信号 本地振荡信号，以及用于解调IF信号的解调器。 本地振荡器检测本地振荡信号的频率变化范围，从频率变化范围获得等于符号率的整数倍的频率，并输出具有本地振荡频率的本地振荡信号，使得中心频率为 要被接收的信道，哪个信道被包括在中频信号中，等于符号率的整数倍。

公开(公告)号：US20100260077A1

公开(公告)日：2010-10-14

申请号：US12747349

申请日：2008-12-09

申请人： Toshifumi Nakatani ,  Satoshi Tsukamoto ,  Noriaki Saito

发明人： Toshifumi Nakatani ,  Satoshi Tsukamoto ,  Noriaki Saito

IPC分类号： H04B1/44

CPC分类号： H04B1/525

摘要： A radio circuit device capable of reducing a cross-modulation interference which occurs at a reception circuit due to a transmission signal leakage is provided.A transmission baseband circuit (12) for outputting a transmission signal, a reception circuit (14, 15) for receiving a reception signal as differential RF signals, an envelope signal generation circuit (24) for generating, from the transmission signal (12) outputted by the transmission baseband circuit, an envelope signal derived from a square of an envelope signal of the RF transmission signal, an envelope signal control circuit (20) for outputting a control signal to control an amplitude and a delay time of the envelope signal, and an envelope signal injection circuit (23) for controlling the amplitude and the delay time of the envelope signal in accordance with the control signal outputted from the envelope signal control circuit (20) and for injecting in phase the controlled envelope signal into each of the differential RF signals in the reception circuit (14, 15), are provided.

摘要翻译： 提供一种能够降低由于传输信号泄漏而在接收电路处发生的交叉调制干扰的无线电电路装置。 用于输出发送信号的发送基带电路（12），用于接收作为差分RF信号的接收信号的接收电路（14,15），从输出的发送信号（12）生成的包络信号生成电路（24） 通过发送基带电路从RF发送信号的包络信号的平方得到的包络信号，用于输出控制信号以控制包络信号的振幅和延迟时间的包络信号控制电路（20），以及 包络信号注入电路（23），用于根据从包络信号控制电路（20）输出的控制信号控制包络信号的幅度和延迟时间，并将受控包络信号同相分别注入每个差分 提供接收电路（14,15）中的RF信号。

公开(公告)号：US07746152B2

公开(公告)日：2010-06-29

申请号：US11806972

申请日：2007-06-05

申请人： Toshifumi Nakatani ,  Mikihiro Shimada

发明人： Toshifumi Nakatani ,  Mikihiro Shimada

IPC分类号： H03K17/16

CPC分类号： H03K17/063 ,  G11C27/02 ,  H03K17/6871 ,  H03K17/693 ,  H03K2217/0018

摘要： A switch circuit device with improved insertion loss characteristics and isolation characteristics is provided. The switch circuit of the present invention includes a plurality of n-ch MOSFETs whose gates are connected together and whose drains and sources are connected in series, a p-ch MOSFET whose gate is connected to the gates of the plurality of n-ch MOSFETs and whose drain is connected to the source and drain of at least one pair of adjacent n-ch MOSFETs, and a voltage changing circuit for applying a low voltage to the source of the p-ch MOSFET while a high-level control voltage is applied to the gate of the p-ch MOSFET, and a high voltage to the source of the p-ch MOSFET while a low-level control voltage is applied to the gate of the p-ch MOSFET.

摘要翻译： 提供了具有改进的插入损耗特性和隔离特性的开关电路器件。 本发明的开关电路包括其栅极连接在一起并且其漏极和源极串联连接的多个n沟道MOSFET，栅极连接到多个n沟道MOSFET的栅极的p沟道MOSFET 并且其漏极连接到至少一对相邻n沟道MOSFET的源极和漏极，以及用于在施加高电平控制电压时向p-ch MOSFET的源施加低电压的电压改变电路 到p-ch MOSFET的栅极，并且向p-ch MOSFET的源极施加高电压，同时向p-ch MOSFET的栅极施加低电平控制电压。

公开(公告)号：US20080265994A1

公开(公告)日：2008-10-30

申请号：US11971558

申请日：2008-01-09

申请人： Toshifumi Nakatani ,  Jyunji Itoh ,  Hideo Nakano

发明人： Toshifumi Nakatani ,  Jyunji Itoh ,  Hideo Nakano

IPC分类号： H03G3/30

CPC分类号： H03G1/0088

摘要： A variable gain amplifying apparatus has an amplifier, one or more first switching elements connected in parallel to the amplifier, and a phase shifter connected in series to the first switching element. The first switching element is enabled if the level of an input signal or an output signal is higher than a predetermined level, and the first switching element is disabled if the level of the input signal or the output signal is equal to or lower than the predetermined level. The amplifier does not operate when the first switching element is enabled, and the amplifier operates when the first switching element is disabled, and the amount of phase shift when the input signal is passed through the amplifier and phase shifter is substantially equal to the amount of phase shift when the input signal is passed through the first switching element.

摘要翻译： 可变增益放大装置具有放大器，与放大器并联连接的一个或多个第一开关元件和与第一开关元件串联连接的移相器。 如果输入信号或输出信号的电平高于预定电平，则第一开关元件被使能，并且如果输入信号或输出信号的电平等于或小于预定电平，则禁用第一开关元件 水平。 当第一开关元件使能时，放大器不工作，并且当第一开关元件被禁止时放大器工作，并且当输入信号通过放大器和移相器时，放大器的相移量基本上等于 当输入信号通过第一开关元件时，相移。

公开(公告)号：US20080083967A1

公开(公告)日：2008-04-10

申请号：US11898175

申请日：2007-09-10

申请人： Toshifumi Nakatani ,  Atsushi Maruyama

发明人： Toshifumi Nakatani ,  Atsushi Maruyama

IPC分类号： H01L29/00

CPC分类号： H01L23/5223 ,  H01L28/60 ,  H01L2924/0002 ,  H01L2924/00

摘要： Provided is a capacitor integrated in a semiconductor device which allows a large capacitance per unit area; small production variations in a capacitance; a high Q-value; and a high self-resonant frequency. To attain this, each of a first wiring layer and a second wiring layer includes a wire group on an input side and a wire group on an output side. A lead-out wire included in the wire group on the input side in the first wiring layer and a lead-out wire included in the wire group on the input side in the second wiring layer are disposed so as to overlap with each other when viewed from a direction of lamination of the wiring layers. A lead-out wire included in the wire group on the output side in the first wiring layer and a lead-out wire included in the wire group on the output side in the second wiring layer are disposed so as to overlap with each other when viewed from the direction of lamination of the wiring layers. The wires which generate capacitances three-dimensionally intersect with each other when viewed from the direction of lamination of the wiring layers.

摘要翻译： 提供集成在半导体器件中的电容器，其允许每单位面积的大电容; 电容量小的生产变化; 高Q值; 和高谐振频率。 为了实现这一点，第一布线层和第二布线层中的每一个包括输入侧的布线组和输出侧的布线组。 包括在第一布线层的输入侧的布线组中的引出线和在第二布线层的输入侧的布线组中包括的引出布线被设置成当观察时彼此重叠 从布线层的层叠方向。 包括在第一布线层的输出侧的布线组中的引出线和在第二布线层的输出侧包括在布线组中的引出布线被设置成当观察时彼此重叠 从布线层的层叠方向。 当从布线层的层压方向观察时，产生电容的电线彼此三维地相交。

公开(公告)号：US07324791B2

公开(公告)日：2008-01-29

申请号：US11038415

申请日：2005-01-21

申请人： Toshifumi Nakatani ,  Shinichi Osako ,  Jyunji Itoh

发明人： Toshifumi Nakatani ,  Shinichi Osako ,  Jyunji Itoh

IPC分类号： H04B1/40

CPC分类号： H03K3/2823 ,  H03F1/3211 ,  H03F1/3276 ,  H03F2200/372 ,  H03K3/013

摘要： A low-noise differential bias circuit is provided which obtains excellent noise characteristics while ensuring excellent distortion characteristics. A collector of a transistor Q11 is connected to a voltage supply point (Vcc) via a resistor R15. A base of the transistor Q11 is connected to a base of a transistor Q1 via resistors R13, R11 connected in series. A connection point between the resistors R11, R13 is connected to the collector of the transistor Q11. A collector of a transistor Q12 is connected to the voltage supply point at connection point A via a resistor R16. A base of the transistor Q12 is connected to a base of a transistor Q2 via resistors R14, R12 connected in series. A connection point between the resistors R12, R14 is connected to the collector of the transistor Q12. By this configuration, a high frequency ground is performed at the connection point A.

摘要翻译： 提供低噪声差分偏置电路，其获得优异的噪声特性，同时确保优异的失真特性。 晶体管Q 11的集电极通过电阻器R 15连接到电压供应点（Vcc）。 晶体管Q11的基极通过串联连接的电阻R 13，R 11连接到晶体管Q 1的基极。 电阻器R 11，R 13之间的连接点连接到晶体管Q11的集电极。 晶体管Q12的集电极经由电阻器R 16连接到连接点A处的电压供应点。 晶体管Q12的基极通过串联连接的电阻器R 14，R 12连接到晶体管Q 2的基极。 电阻器R 12，R 14之间的连接点连接到晶体管Q12的集电极。 通过这种配置，在连接点A处执行高频接地。

公开(公告)号：US07245890B2

公开(公告)日：2007-07-17

申请号：US10895380

申请日：2004-07-21

申请人： Masahiro Kumagawa ,  Toshifumi Nakatani ,  Hisashi Adachi

发明人： Masahiro Kumagawa ,  Toshifumi Nakatani ,  Hisashi Adachi

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03G3/3052 ,  H03G3/3063

摘要： A high frequency variable gain amplification device 100 includes: a feedback circuit 103 capable of changing a feedback impedance to adjust the gain of an amplifier 101 in accordance with a control signal from a control device 200; and a current consumption adjustment circuit 102 capable of adjusting current consumption of the amplifier 101. The control device 200 controls the feedback impedance and the current consumption based on a desired signal power level and an undesired signal power level. If the desired signal power level exceeds a predetermined value, the control device 200 reduces the feedback impedance to increase the amount of a feedback signal, thereby allowing the amplifier 101 to operate with low gain so as to prevent the distortion characteristic from being reduced and to reduce the current consumption.

摘要翻译： 高频可变增益放大装置100包括：能够根据来自控制装置200的控制信号改变反馈阻抗以调整放大器101的增益的反馈电路103; 以及能够调整放大器101的电流消耗的电流消耗调整电路102。 控制装置200基于期望的信号功率电平和不期望的信号功率电平来控制反馈阻抗和电流消耗。 如果期望的信号功率电平超过预定值，则控制装置200减小反馈阻抗以增加反馈信号的量，从而允许放大器101以低增益工作，以防止失真特性被降低，并且 降低电流消耗。

公开(公告)号：US07245883B2

公开(公告)日：2007-07-17

申请号：US10738421

申请日：2003-12-17

申请人： Toshifumi Nakatani ,  Atsushi Yamamoto ,  Hisashi Adachi

发明人： Toshifumi Nakatani ,  Atsushi Yamamoto ,  Hisashi Adachi

IPC分类号： H04B1/44

CPC分类号： H04B1/525

摘要： Radio communication apparatus comprising an antenna, a transmitting circuit outputting a transmitting signal in a first frequency band. A duplexer connected to the antenna and having a single-phase input terminal and a balanced output terminal, conveying the transmitting signal inputted to the single-phase input terminal to the antenna. The duplexer outputs a receiving signal in a second frequency band different from the first frequency band received from the antenna substantially as a differential signal from the balanced output terminal. A receiving circuit connected to the balanced output terminal and having a circuit in which a gain of a signal of a differential component is higher than that of a signal of an in-phase component, or a loss of the signal of the differential component is lower than that of the signal of the in-phase component.

摘要翻译： 无线通信装置，包括天线，发送电路，输出第一频带的发送信号。 连接到天线并具有单相输入端子和平衡输出端子的双工器，将输入到单相输入端子的发送信号传送到天线。 双工器基本上作为来自平衡输出端子的差分信号，输出与从天线接收的第一频带不同的第二频带中的接收信号。 连接到平衡输出端子并具有差分分量的信号的增益高于同相分量的信号的增益或差分分量的信号的损失的电路的接收电路较低 比同相成分的信号。

公开(公告)号：US07170539B2

公开(公告)日：2007-01-30

申请号：US11031299

申请日：2005-01-06

申请人： Toshifumi Nakatani ,  Shuuichi Usami ,  Hirotoshi Terao

发明人： Toshifumi Nakatani ,  Shuuichi Usami ,  Hirotoshi Terao

IPC分类号： B41J2/335

CPC分类号： B41J2/33515 ,  B41J2/3353

摘要： In a thermal head provided with a resistance layer having a plurality of heating element portions which generate heat by energization, an insulating barrier layer which determines the two-dimensional size of each heating element portion by covering each heating element portion, and electrode layers electrically connected to two end portions of each of the plural heating element portions, in the length direction of the resistance, a heat transfer layer is disposed on at least the insulating barrier layer to determine the two-dimensional surface exposure area of the insulating barrier layer by covering part of the insulating barrier layer and to dissipate the heat generated from the plural heating element portions, and surface exposure regions of the insulating barrier layer are specified as effective heating regions of the plural heating element portions by adjusting the two-dimensional size of the heat transfer layer.

摘要翻译： 在设置有具有通过通电而产生热的多个加热元件部分的电阻层的热敏头中，通过覆盖每个加热元件部分确定每个加热元件部分的二维尺寸的绝缘阻挡层，以及电连接的电极层 在多个加热元件部分中的每一个的两个端部，在电阻的长度方向上，至少在绝缘阻挡层上设置传热层，以通过覆盖来确定绝缘阻挡层的二维表面暴露面积 绝缘阻挡层的一部分并且散发从多个加热元件部分产生的热量，并且绝缘阻挡层的表面暴露区域被指定为多个加热元件部分的有效加热区域，通过调节热量的二维尺寸 转移层。