利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

107 条记录 (耗时 0.026 秒)

    Method for preparing aromatic compounds
    5.
    发明授权
    Method for preparing aromatic compounds 失效
    芳香族化合物的制备方法

    公开(公告)号：US5849934A

    公开(公告)日：1998-12-15

    申请号：US20573

    申请日：1998-01-28

    申请人： Shinji Ando ,  Toru Matsuura ,  Shigekuni Sasaki ,  Fumio Yamamoto

    发明人： Shinji Ando ,  Toru Matsuura ,  Shigekuni Sasaki ,  Fumio Yamamoto

    IPC分类号： G02B6/12 ,  C07C51/08 ,  C07C63/68 ,  C07C65/24 ,  C07C65/28 ,  C07C255/54 ,  C07D209/48 ,  C07D307/89 ,  C07D487/04 ,  C07D493/04 ,  C08G73/10 ,  G02B1/04 ,  G02B6/00

    CPC分类号： C07D209/48 ,  C07C255/54 ,  C07C51/08 ,  C07C51/56 ,  C07C63/68 ,  C07C65/24 ,  C07C65/28 ,  C07D307/89 ,  C07D487/04 ,  C07D493/04 ,  C08G73/1039 ,  C08G73/1064 ,  C08G73/1067 ,  C08G73/1071

    摘要： A perfluorinated polyimide comprising a repeating unit represented by general formula (1): ##STR1## and a perfluorinated poly(amic acid) comprising a repeating unit represented by general formula (6): ##STR2## wherein R.sub.1 is a tetravalent organic group; and R.sub.2 is a divalent organic group, provided that chemical bonds between carbon atoms and monovalent elements contained in R.sub.1 and R.sub.2 are exclusively carbon-to-fluorine bonds; methods for preparing them; and optical material including the perfluorinated polyimide. 1,4-Bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene dianhydride, 1,4-difluoropyromellitic anhydride, 1,4-bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene, 1,4-difluoropyromellitic acid, and 1,4-bis(3,4-dicyanotrifluorophenoxy)-tetrafluorobenzene as well as methods preparing them. The perfluorinated polyimide has a thermal stability and has a low optical loss in an optical communication wavelength region (0.8 to 1.7 .mu.m).

    摘要翻译： 一种全氟化聚酰亚胺，其包含由通式（1）表示的重复单元：（IMAG）（1）和包含由通式（6）表示的重复单元的全氟化聚（酰胺酸）：其中R1是 四价有机基团; 并且R2是二价有机基团，条件是R1和R2中包含的碳原子和一价元素之间的化学键仅为碳 - 氟键; 制备方法 和包括全氟化聚酰亚胺的光学材料。 1,4-二（3,4-二羧基三氟苯氧基） - 四氟苯二酸酐，1,4-二氟苯
    二甲酸酐，1,4-双（3,4-二羧基三氟苯氧基） - 四氟苯，1,4-二氟苯甲酸酐， 双（3,4-二氰基三氟苯氧基） - 四氟苯以及制备它们的方法。 全氟聚酰亚胺具有热稳定性，并且在光通信波长区域（0.8-1.7μm）中具有低光损耗。

    High efficiency transmitter
    7.
    发明授权
    High efficiency transmitter 有权
    高效率变送器

    公开(公告)号：US08576942B2

    公开(公告)日：2013-11-05

    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： H04K1/02

    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向量的线性和，其形成角度（pi / 4），并且被包括在表示由八 （-pi / 2），0，（pi / 2），pi，（-3pi / 4），（-pi / 4），（pi / 4）和（3pi / 4） 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（-pi / 2），0，（pi / 2），pi，（-3pi / 4），（-pi / 4），（pi / 4） （3pi / 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。

    Method and apparatus for providing high efficiency cartesian modulation
    8.
    发明授权
    Method and apparatus for providing high efficiency cartesian modulation 有权
    用于提供高效率笛卡尔调制的方法和装置

    公开(公告)号：US08340209B2

    公开(公告)日：2012-12-25

    申请号：US12554863

    申请日：2009-09-04

    申请人： Paul Cheng-Po Liang ,  Koji Takinami ,  Hua Wang ,  Toru Matsuura

    发明人： Paul Cheng-Po Liang ,  Koji Takinami ,  Hua Wang ,  Toru Matsuura

    IPC分类号： H04L25/34 ,  H04L25/49

    CPC分类号： H04L25/4917

    摘要： The disclosure relates to a method and apparatus for providing efficient signal transmission. Conventional linear amplifiers are most efficient when operated in compressed mode. In the compressed mode, the digital power amplifier switches between the on and off modes. A digital power amplifier operates in compressed mode only if the incoming signal is an on-off constant envelop signal. In one embodiment, the disclosure provides a method and apparatus for converting a digital baseband signal to on-off constant envelop signals for processing through binary-weighted or thermometer-weighted amplifier which are operated in compressed mode.

    摘要翻译： 本公开涉及一种用于提供有效信号传输的方法和装置。 传统的线性放大器在压缩模式下工作时效率最高。 在压缩模式下，数字功率放大器在导通和关断模式之间切换。 数字功率放大器仅在输入信号为开 - 关恒定包络信号时才以压缩模式工作。 在一个实施例中，本公开提供了一种用于将数字基带信号转换为开 - 关恒定包络信号以便通过以压缩模式操作的二进制加权或温度计加权放大器进行处理的方法和装置。

    TRANSMISSION APPARATUS, RADIO COMMUNICATION APPARATUS, AND TRANSMISSION METHOD
    9.
    发明申请
    TRANSMISSION APPARATUS, RADIO COMMUNICATION APPARATUS, AND TRANSMISSION METHOD 有权
    传输装置，无线电通信装置和传输方法

    公开(公告)号：US20120002754A1

    公开(公告)日：2012-01-05

    申请号：US13256186

    申请日：2010-12-17

    申请人： Toru Matsuura

    发明人： Toru Matsuura

    IPC分类号： H04L27/04

    CPC分类号： H03F1/3247 ,  H03F1/0222 ,  H03F1/3294 ,  H03F3/189 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/451 ,  H04B1/0475

    摘要： Disclosed is a transmission apparatus, a radio communication apparatus, and a transmission method for making it possible to obtain stable characteristics by controlling the difference of time between an amplitude signal and a phase signal to an optimal point, without depending on a modulated signal nor making the circuit size larger. A multiplier (170) generates, in a pseudo manner, a digital modulated signal corresponding to a signal that is obtained by performing analog to digital conversion on a modulated signal that is generated by an amplitude modulator (140), by multiplying a digital amplitude signal that is obtained by performing analog to digital conversion on an amplitude signal by a digital angle modulated signal corresponding to a signal that is obtained by performing analog to digital conversion on an angle modulated signal. Distortion calculation section (180) calculates distortion of the digital modulated signal, control section (190) controls delay time based on the distortion of the digital modulated signal, and delay adjustment section (130) adjusts delay time until the amplitude signal is input to amplitude modulator (140), or delay time until the angle modulated signal is input to amplitude modulator (140).

    摘要翻译： 公开了一种发送装置，无线电通信装置和发送方法，用于通过将幅度信号和相位信号之间的时间差控制到最佳点来获得稳定的特性，而不依赖于调制信号，也不会使 电路尺寸较大。 乘法器（170）以伪方式产生与通过对由振幅调制器（140）产生的调制信号进行模数转换而获得的信号相对应的数字调制信号，通过将数字幅度信号 通过对与通过对角度调制信号进行模数转换获得的信号相对应的数字角度调制信号对振幅信号进行模数转换而获得。 失真计算部（180）计算数字调制信号的失真，控制部（190）基于数字调制信号的失真来控制延迟时间，延迟调整部（130）调整延迟时间，直到振幅信号输入到振幅 调制器（140）或直到角度调制信号被输入到幅度调制器（140）的延迟时间。

    Data converter device and data conversion method, and transmitter circuit, communications device and electronic device using the same
    10.
    发明授权
    Data converter device and data conversion method, and transmitter circuit, communications device and electronic device using the same 有权
    数据转换装置和数据转换方法，以及发射机电路，通信装置和使用该装置的电子装置

    公开(公告)号：US07817725B2

    公开(公告)日：2010-10-19

    申请号：US11074677

    申请日：2005-03-09

    申请人： Toru Matsuura ,  Hisashi Adachi

    发明人： Toru Matsuura ,  Hisashi Adachi

    IPC分类号： H04B14/06

    CPC分类号： H03M3/368 ,  H03M3/458

    摘要： The present invention aims to provide a transmitter circuit that is capable of suppressing quantization noise and operating with a high efficiency, a data converter section 13 and a data conversion method for use therein, and a communications device using the same. The data converter section 13 of the present invention performs a predetermined data conversion operation on an input signal. The data converter section 13 includes: a signal processing section 133 for discretizing the input signal to produce a signal having a lower resolution magnitude-wise than that of the input signal; a subtractor section 134 for subtracting the input signal from the signal having a lower resolution to extract quantization noise; a filter 135 for extracting quantization noise near an intended wave frequency; and a subtractor section 136 for removing the quantization noise near the intended wave frequency from the signal having a lower resolution.

    摘要翻译： 本发明旨在提供一种能够抑制量化噪声和高效率操作的发射机电路，数据转换器部分13及其中使用的数据转换方法，以及使用该发射机电路的通信装置。 本发明的数据转换器部分13对输入信号执行预定的数据转换操作。 数据转换器部分13包括：信号处理部分133，用于离散输入信号以产生具有比输入信号幅度更小的分辨率的信号; 减法器部分134，用于从具有较低分辨率的信号中减去输入信号以提取量化噪声; 用于提取预期波频附近的量化噪声的滤波器135; 以及用于从具有较低分辨率的信号中去除预期波频率附近的量化噪声的减法器部分136。