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    • 113. 发明授权
    • Multi-antenna communication apparatus
    • 多天线通信装置
    • US08050639B2
    • 2011-11-01
    • US11806821
    • 2007-06-04
    • Toshifumi NakataniHiroshi Iwai
    • Toshifumi NakataniHiroshi Iwai
    • H04B17/02
    • H04B7/0822
    • 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.
    • 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 信号整形部分60被信号整形部分60整形的接收信号由取样保持部分71采样,并根据接收信号被顺序选择的时间由AD转换器72进行AD转换 。 所得到的信号由串并行转换部分73转换为并行信号。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。
    • 116. 发明申请
    • AMPLIFYING CIRCUIT WITH BYPASS CIRCUIT, AND ELECTRONIC DEVICE USING THE SAME
    • 带旁路电路的放大电路和使用该电路的电子设备
    • US20100194475A1
    • 2010-08-05
    • US12679503
    • 2008-11-25
    • Motoyuki OkayamaHiroshi IwaiMotohiko SakoHidenori KitamuraYuta Yamamoto
    • Motoyuki OkayamaHiroshi IwaiMotohiko SakoHidenori KitamuraYuta Yamamoto
    • H03F1/00
    • H04B1/18
    • An amplifying circuit with a bypassing function includes an input terminal to which a signal is input from an antenna, an amplifier connected to the input terminal, a first inductor connected between the input port and a ground, and a bypass circuit connected between the input terminal and the output port of the amplifier. The bypass circuit includes a first port connected to the input terminal, a second port connected to the output port of the amplifier, a switch, a capacitor, and a second inductor. The switch is connected in series between the first and second ports. The capacitor is connected in series to the switch between the first and second ports. The second inductor is connected in series to the switch and the capacitor between the first and second ports. The amplifying circuit does not reduce power of a signal drastically even when the signal passes through the bypass circuit, as compared to passing through the amplifier, thus maintaining a profile of a propagation property unchanged and provide preferable transmission quality.
    • 具有旁路功能的放大电路包括从天线输入信号的输入端子,连接到输入端子的放大器,连接在输入端口和地之间的第一电感器以及连接在输入端子之间的旁路电路 和放大器的输出端口。 旁路电路包括连接到输入端的第一端口,连接到放大器的输出端口的第二端口,开关,电容器和第二电感器。 开关串联连接在第一和第二端口之间。 电容器与第一和第二端口之间的开关串联连接。 第二电感器串联连接到开关和第一和第二端口之间的电容器。 与通过放大器相比,即使当信号通过旁路电路时,放大电路也不会急剧降低信号的功率,从而保持传播特性的轮廓不变,并提供优选的传输质量。
    • 118. 发明申请
    • ADAPTIVE CONTROL APPARATUS USING MULTIPLE ADAPTIVE CONTROL METHODS
    • 使用多种自适应控制方法的自适应控制装置
    • US20090221253A1
    • 2009-09-03
    • US12282954
    • 2007-03-15
    • Atsushi YamamotoKoichi OgawaHiroshi IwaiYoshio KoyanagiAkira Kato
    • Atsushi YamamotoKoichi OgawaHiroshi IwaiYoshio KoyanagiAkira Kato
    • H04B7/00H04B1/06G05B13/02G01R29/26
    • H04B7/0851
    • In the adaptive control apparatus, a computation unit computes weighting coefficients, using a first adaptive control method in a proportion α of a first computation amount, where the first adaptive control method has a first convergence rate and a first convergence error. Further, a computation unit computes weighting coefficients from initial values of the weighting coefficients computed by the computation unit, using a second adaptive control method in a proportion (1−α) of a second computation amount, where the second adaptive control method has a second convergence rate slower than the first convergence rate and a second convergence error smaller than the first convergence error. A controller controls determination of a ratio α/(1-α) based on a moving speed of a mobile unit, and controls the computation units to perform computing processes.
    • 在自适应控制装置中,计算单元使用第一自适应控制方法具有第一收敛速度和第一收敛误差的第一计算量的比例α来使用第一自适应控制方法来计算加权系数。 此外,计算单元使用第二自适应控制方法以第二计算量的比例(1-α)计算由计算单元计算的加权系数的初始值的加权系数,其中第二自适应控制方法具有第二 收敛速度比第一收敛速度慢,第二收敛误差小于第一收敛误差。 控制器基于移动单元的移动速度来控制α/(1-α)比率的确定,并且控制计算单元执行计算处理。
    • 119. 发明授权
    • Adaptive antenna apparatus provided with controller for controlling to select best demodulated signal
    • 具有用于控制以选择最佳解调信号的控制器的自适应天线装置
    • US07502592B2
    • 2009-03-10
    • US11315329
    • 2005-12-23
    • Atsushi YamamotoKoichi OgawaHiroshi IwaiYoshio KoyanagiAkira Kato
    • Atsushi YamamotoKoichi OgawaHiroshi IwaiYoshio KoyanagiAkira Kato
    • H04B1/00
    • H04B7/0848
    • An adaptive antenna apparatus including a reception adaptive control circuit is provided. The reception adaptive control circuit adaptively controls respective received signals received by a plurality of antenna elements, and outputs the adaptively-controlled received signals as a combined received signal. A demodulator demodulates the combined received signal to a demodulated signal, and demodulates the respective received signals separately received by the respective antenna elements to demodulated signals. A controller compares signal quality of the demodulated signal of the combined received signal with signal qualities of the demodulated signals of the respective received signals separately received by the respective antenna elements, respectively, selects a demodulated signal having the highest signal quality, and controls to receive a received signal including a selected demodulated signal.
    • 提供一种包括接收自适应控制电路的自适应天线装置。 接收自适应控制电路自适应地控制由多个天线元件接收的各个接收信号,并且将自适应控制的接收信号作为组合的接收信号输出。 解调器将组合的接收信号解调为解调信号,并将由各个天线元件接收的各个接收信号解调为解调信号。 控制器将组合的接收信号的解调信号的信号质量与由各个天线单元分别接收的相应接收信号的解调信号的信号质量分别进行比较,选择具有最高信号质量的解调信号,并控制接收 包括所选择的解调信号的接收信号。