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    • 2. 发明授权
    • Amplifying apparatus and control method
    • 放大装置及控制方法
    • US09000842B2
    • 2015-04-07
    • US13741944
    • 2013-01-15
    • Fujitsu Limited
    • Nobuhisa AokiMichiharu Nakamura
    • H03G1/00H03F1/02
    • H03G1/00H03F1/0288
    • An amplifying apparatus includes an amplifying unit that includes multiple amplifiers coupled in parallel; a measuring unit that measures in a predetermined period, frequency distribution of any one among instantaneous power and instantaneous voltage of a signal amplified by the amplifying unit; a calculating unit that calculates for multiple candidate values of a predetermined parameter of the amplifying unit, efficiency of amplification that is performed by the amplifying unit and based on the frequency distribution; and a controller that controls the predetermined parameter, based on the efficiency calculated for the candidate values by the calculating unit.
    • 放大装置包括:放大单元,其包括并联耦合的多个放大器; 测量单元,其在预定周期内测量由所述放大单元放大的信号的瞬时功率和瞬时电压中的任一个的频率分布; 计算单元,计算放大单元的预定参数的多个候选值,由放大单元执行的放大效率和基于频率分布; 以及控制器,其基于由所述计算单元为所述候选值计算的效率来控制所述预定参数。
    • 3. 发明申请
    • COMMUNICATION CONTROL APPARATUS, MOBILE STATION, AND COMMUNICATION CONTROL METHOD
    • 通信控制装置,移动站和通信控制方法
    • US20140370877A1
    • 2014-12-18
    • US14285113
    • 2014-05-22
    • FUJITSU LIMITED
    • Yoshiharu TajimaKazuaki AndoMichiharu Nakamura
    • H04W8/24
    • H04W28/0231H04L67/06H04L67/322
    • A communication control apparatus includes a communication quality determining unit, a rank value calculating unit, and a download control unit. The communication quality determining unit acquires wireless communication qualities of a plurality of mobile stations. The rank value calculating unit calculates a reference value to determine mobile stations to be data download destinations by using the wireless communication qualities acquired by the acquiring unit, compares the reference values of the respective mobile stations at a first time point, and determines mobile stations to be the data download destinations in order from a mobile station whose reference value is the highest based on results of the comparison. The download control unit downloads data to the mobile stations determined as the data download destinations by the rank value calculating unit.
    • 通信控制装置包括通信质量确定单元,等级值计算单元和下载控制单元。 通信质量确定单元获取多个移动站的无线通信质量。 等级值计算单元通过使用由获取单元获取的无线通信质量来计算参考值以确定作为数据下载目的地的移动台,在第一时间点比较各个移动台的参考值,并将移动站确定为 根据比较结果,从参考值最高的移动台按顺序成为数据下载目的地。 下载控制单元通过秩值计算单元将数据下载到由数据下载目的地确定的移动站。
    • 4. 发明申请
    • POWER AMPLIFICATION DEVICE
    • 功率放大器件
    • US20140055199A1
    • 2014-02-27
    • US13911905
    • 2013-06-06
    • Fujitsu Limited
    • Takeshi TAKANOMasakazu KojimaMichiharu NakamuraToru ManiwaShigekazu KimuraKen Tamanoi
    • H03F1/56
    • H03F1/56H03F1/0205H03F3/189H03M1/802
    • A power amplification device, includes: an amplifier to amplify an input signal; a switched capacitor, provided at an output stage of the amplifier, to change capacitance based on a first control signal; a matching unit, provided at the output stage of the amplifier and including a varactor pair in which two varactor diodes are coupled in series or a varactor pair in which two varactor diodes are coupled in parallel, to change capacitance based on a second control signal; a detection circuit to detect power of the input signal; a quantization circuit to quantize a detected power value, form a quantized bit string having a high-order bit group and a low-order bit group, and output the high-order bit group as the first control signal to the switched capacitor; and a conversion circuit to convert the low-order bit group into an analog value and form the second control signal.
    • 一种功率放大装置,包括:放大器,用于放大输入信号; 设置在所述放大器的输出级的开关电容器,用于根据第一控制信号改变电容; 一个匹配单元,设置在放大器的输出级,并包括一个变容二极管对,其中两个变容二极管串联耦合,或一个变容二极管对,其中两个变容二极管并联耦合,以根据第二控制信号改变电容; 用于检测输入信号的功率的检测电路; 用于量化检测到的功率值的量化电路,形成具有高位位组和低位位组的量化比特串,并将高位比特组作为第一控制信号输出到切换电容器; 以及将低位比特组转换为模拟值并形成第二控制信号的转换电路。