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    • 11. 发明申请
    • UWB TRANSMISSION APPARATUS AND UWB TRANSMISSION METHOD
    • UWB传输设备和UWB传输方法
    • US20100166037A1
    • 2010-07-01
    • US12377113
    • 2007-10-10
    • Lei Soo HuangPing LuoSuguru FujitaKazuaki Takahashi
    • Lei Soo HuangPing LuoSuguru FujitaKazuaki Takahashi
    • H04B1/69
    • H04L27/0008H04B1/7176H04L27/02H04L27/18
    • A UWB transmission apparatus that, in a system using a mixture of amplitude and phase modulation schemes, can support both of the amplitude and phase modulation schemes, while preventing the signal powers of amplitude-modulated signals from degrading. In this UWB transmission apparatus, if the modulation mode is of QPSK, a mapping part (121) selects one of four signal points on the IQ plane in accordance with a 2-bit data, and outputs information related to the I- and Q-components of the selected signal point to a QPSK/ASK modulated signal forming part (122). If the modulation mode is of ASK, the mapping part (121) selects the origin point on the IQ plane when the data being ‘0’ and selects one of four signal points on the IQ plane, similarly to the case of QPSK modulation, when the data being ‘1,’ and outputs information, which is related to the selected signal point, to the QPSK/ASK modulated signal forming part (122).
    • 一种UWB传输装置,其在使用幅度和相位调制方案的混合的系统中可以支持幅度和相位调制方案两者,同时防止幅度调制信号的信号功率降级。 在该UWB发送装置中,如果调制模式为QPSK,则映射部(121)根据2比特数据选择IQ平面上的四个信号点中的一个,并且输出与I和Q- 所选信号的分量指向QPSK / ASK调制信号形成部分(122)。 如果调制方式为ASK,映射部分(121)在数据为“0”时选择IQ平面上的原点,并选择IQ平面上的四个信号点中的一个,类似于QPSK调制的情况,当 数据为“1”,并将与所选信号点相关的信息输出到QPSK / ASK调制信号形成部分(122)。
    • 12. 发明授权
    • Reception device, transmission device, and radio system
    • 接收设备,传输设备和无线电系统
    • US07706452B2
    • 2010-04-27
    • US10599378
    • 2005-03-15
    • Suguru FujitaKazuaki TakahashiMasahiro Mimura
    • Suguru FujitaKazuaki TakahashiMasahiro Mimura
    • H04L27/00
    • H04B1/7174G01S13/931H04B1/71632H04B1/71637H04B1/719
    • A transmitter using a plurality of pulse signals having different pulse sequence times, a receiver for steadily demodulating pulse signals of only desirable wave, and a wireless system are disclosed. In the transmitter, a control signal generating circuit outputs a control signal for generating a plurality of pulse signals having different pulse sequence generating times, a pulse generating circuit generates a plurality of pulse signals by using the control signal. In the receiver, reception front end receives the plurality of pulse signals having different pulse sequence generating times, delay circuit delays at least one of reception front-end output signals supplied from the reception front-end by a given time, delay pulse composition circuit combines delay signal with reception front-end output signal, so that the receiver steadily demodulates the pulse signals of only the desirable wave.
    • 公开了使用具有不同脉冲序列时间的多个脉冲信号的发射机,用于稳定地解调仅期望波的脉冲信号的接收机和无线系统。 在发送器中,控制信号发生电路输出用于产生具有不同脉冲序列产生时间的多个脉冲信号的控制信号,脉冲发生电路通过使用控制信号产生多个脉冲信号。 在接收机中,接收前端接收具有不同脉冲序列产生时间的多个脉冲信号,延迟电路将从接收前端提供的接收前端输出信号中的至少一个延迟给定时间,延迟脉冲合成电路组合 具有接收前端输出信号的延迟信号,使得接收机稳定地解调仅需要的波的脉冲信号。
    • 14. 发明申请
    • IMPULSE WAVEFORM GENERATING APPARATUS AND RADIO-FREQUENCY PULSE WAVEFORM GENERATING APPARATUS
    • 脉冲波形发生装置和无线电频率波形波形发生装置
    • US20090135974A1
    • 2009-05-28
    • US11909910
    • 2006-03-29
    • Masahiro MimuraKazuaki TakahashiSuguru Fujita
    • Masahiro MimuraKazuaki TakahashiSuguru Fujita
    • H04L7/00
    • H03K7/02
    • An impulse waveform generating apparatus includes a multistage delay pulse signal generating part for generating a plurality of delay pulse signals by a timing signal; a signal source signal generating part for generating a signal source signal indicating the frequency component of an impulse waveform signal by the delay pulse signals; an envelope formation signal generating part for generating an envelope formation signal indicating the amplitude component of the impulse waveform signal by the delay pulse signals; and a mixer part for multiplying the signal source signal by the envelope formation signal to generate a prescribed impulse waveform signal. The impulse waveform generating apparatus generates the impulse waveform signal from the timing signal. Therefore, the circuit arrangement requires no digital-to-analog converter, the operational frequency of each element can be reduced, and the power consumption can be reduced.
    • 脉冲波形发生装置包括:多级延迟脉冲信号产生部分,用于通过定时信号产生多个延迟脉冲信号; 信号源信号产生部分,用于通过延迟脉冲信号产生指示脉冲波形信号的频率分量的信号源信号; 信封形成信号产生部分,用于通过延迟脉冲信号产生指示脉冲波形信号的振幅分量的包络信号; 以及混合器部分,用于将信号源信号乘以包络形成信号以产生规定的脉冲波形信号。 脉冲波形生成装置根据定时信号生成脉冲波形信号。 因此,该电路装置不需要数模转换器,可以降低各元件的工作频率,能够降低功耗。
    • 19. 发明授权
    • Separation membrane module
    • 分离膜组件
    • US08771512B2
    • 2014-07-08
    • US12933995
    • 2008-10-07
    • Suguru FujitaYoshinobu TakakiYoshihiro Asari
    • Suguru FujitaYoshinobu TakakiYoshihiro Asari
    • B01D63/06
    • B01D71/028B01D63/065B01D65/003B01D2313/02B01D2313/08B01D2313/22B01D2319/022B01D2319/04
    • In a separation membrane module in a module main body, an upper horizontal partition plate forms an upper fluid channel, a lower horizontal partition plate forms a lower fluid channel, a plurality of vertical outer tubes are fixed between the upper horizontal partition plate and the lower horizontal partition plate, and vertical tubular membrane elements extend through the respective outer tubes with a gap. An upper end of the gap is in communication with the upper fluid channel and a lower end of the gap is in communication with the lower fluid channel. An upper end opening of each of the membrane elements is open to outside of the module main body and a lower end opening each of the membrane elements is closed. A vertical partition plate is provided in either the upper fluid channel or the lower fluid channel to form an inlet chamber and an outlet chamber.
    • 在模块主体的分离膜组件中,上水平隔板形成上流体通道,下水平隔板形成下流体通道,多个垂直外管固定在上水平隔板和下水平隔板之间 水平分隔板和垂直管状膜元件以间隙延伸通过相应的外管。 间隙的上端与上流体通道连通,间隙的下端与下流体通道连通。 每个膜元件的上端开口对模块主体的外部开放,并且每个膜元件的下端开口关闭。 在上部流体通道或下部流体通道中设置有垂直隔板以形成入口室和出口室。
    • 20. 发明授权
    • Pulse radio receiver
    • 脉冲无线电接收机
    • US08509360B2
    • 2013-08-13
    • US12281883
    • 2007-03-01
    • Suguru FujitaMasahiro MimuraKazuaki TakahashiTakenori Sakamoto
    • Suguru FujitaMasahiro MimuraKazuaki TakahashiTakenori Sakamoto
    • H04L7/00
    • H04L27/2278H04B1/7183H04L25/03006H04L2027/0038
    • A pulse radio receiving apparatus includes a reference waveform generation section that generates a reference waveform signal, a delay section that generates a plurality of delayed waveform signals by delaying the reference waveform signal by different amounts of delay, a correlation calculation section that generates a plurality of correlation value signals showing correlation values between a received signal, and the reference waveform signal and the delayed waveform signals, a determination section that compares predetermined combinations of the plurality of correlation value signals and generates a difference detection signal showing a direction and degree of a phase shift between the received signal and the reference waveform signal according to comparison results, and a synchronization control section that controls a phase of the reference waveform signal generated by the reference waveform signal generation section based on the difference detection signal.
    • 脉冲无线电接收装置包括产生参考波形信号的参考波形生成部分,延迟部分,通过延迟不同延迟量的参考波形信号产生多个延迟波形信号;相关计算部分,生成多个延迟波形信号; 表示接收信号和参考波形信号与延迟波形信号之间的相关值的相关值信号,比较多个相关值信号的预定组合的判定部,生成表示相位方向和程度的差分检测信​​号 根据比较结果,在接收信号和参考波形信号之间进行移位,以及同步控制部,其基于差分检测信​​号来控制由基准波形信号生成部生成的基准波形信号的相位。