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    • 3. 发明授权
    • Radio apparatus having first and second amplifiers and which performs direct current offset correction of the first and second amplifiers
    • 具有第一和第二放大器并且执行第一和第二放大器的直流偏移校正的无线电设备
    • US08489030B2
    • 2013-07-16
    • US13052371
    • 2011-03-21
    • Fumi MoritsukaShoji OtakaMasahiro HosoyaHiroaki IshiharaTsuyoshi Kogawa
    • Fumi MoritsukaShoji OtakaMasahiro HosoyaHiroaki IshiharaTsuyoshi Kogawa
    • H04B1/00
    • H03G3/3052H03F3/195H03F3/45475H03F3/45977H03F2200/321H03F2200/451H03F2203/45138H03F2203/45424H03F2203/45438H03F2203/45446H03F2203/45522
    • A radio apparatus capable of correcting a direct current offset with high accuracy in a short time is provided. A radio apparatus according to an embodiment includes a first amplifier amplifying a signal inputted to an input terminal with amplification gain determined by a variable resistor to generate a first amplified signal, and a second amplifier amplifying the first amplified signal to generate a second amplified signal. Further, the radio apparatus includes a first correcting unit correcting a direct current offset of the first amplifier, and a second correcting unit correcting a direct current offset of the second amplifier. The radio apparatus also includes a reference voltage source or reference current source supplying a reference voltage or reference current for referring a direct current offset to the first amplifier and the second amplifier, a gain controller controlling the amplification gain of the first amplifier; and a correction controller controlling the gain controller to set the amplification gain to maximum and controlling the first and second correcting units to perform correction of the second correcting unit based on the second amplified signal obtained by inputting the reference voltage or the reference current to an input terminal of the second amplifier, and thereafter perform correction of the first correcting unit based on the second amplified signal obtained by inputting the reference voltage or the reference current to an input terminal of the first amplifier.
    • 提供能够在短时间内以高精度校正直流偏移的无线电装置。 根据实施例的无线电设备包括:放大输入到输入端的信号的第一放大器,其具有由可变电阻器确定的放大增益以产生第一放大信号;以及第二放大器,放大第一放大信号以产生第二放大信号。 此外,无线电设备包括校正第一放大器的直流偏移的第一校正单元和校正第二放大器的直流偏移的第二校正单元。 无线电设备还包括参考电压源或参考电流源,其提供用于将直流偏移引用到第一放大器和第二放大器的参考电压或参考电流,控制第一放大器的放大增益的增益控制器; 以及校正控制器,控制增益控制器将放大增益设定为最大,并且基于通过将参考电压或参考电流输入到输入端获得的第二放大信号来控制第一和第二校正单元执行第二校正单元的校正 终端,然后基于通过将参考电压或参考电流输入到第一放大器的输入端而获得的第二放大信号来执行第一校正单元的校正。
    • 4. 发明授权
    • Power receiving device, power transmitting device and control device
    • 受电装置,发电装置及控制装置
    • US09343225B2
    • 2016-05-17
    • US13717477
    • 2012-12-17
    • Kohei OnizukaShoji OtakaHiroaki IshiharaFumi Moritsuka
    • Kohei OnizukaShoji OtakaHiroaki IshiharaFumi Moritsuka
    • H01F27/00H01F38/14H02J5/00H02J7/02
    • H01F38/14H02J5/005H02J7/025H02J50/12
    • There provided a power receiving device connectable with a first load circuit operating according to AC power from a power transmitting device in which the power receiver receives the AC power from the power transmitting device via magnetic coupling, the impedance adjuster is capable of converting at least one of voltage and current of the AC power received at the power receiver, the controller controls increase in output voltage of the power transmitting device, the AC power is supplied to the first load circuit via the impedance adjuster when the first load circuit is connected to the power receiving device, and the controller controls the impedance adjuster such that an input impedance of the impedance adjuster is lower than an input impedance of the first load circuit during at least a part of a time period where the output voltage of the power transmitting device is increased.
    • 提供了一种电力接收装置,可与根据来自功率传输装置的AC电力工作的第一负载电路连接,其中电力接收器通过磁耦合从发送装置接收AC电力,阻抗调节器能够转换至少一个 在电力接收器处接收的AC电力的电压和电流,控制器控制电力传输装置的输出电压的增加,当第一负载电路连接到第一负载电路时,AC电力经由阻抗调节器被提供给第一负载电路 电力接收装置,并且所述控制器控制所述阻抗调节器,使得所述阻抗调节器的输入阻抗在所述电力发送装置的输出电压为的时间段的至少一部分期间低于所述第一负载电路的输入阻抗 增加。
    • 5. 发明授权
    • Directional coupler and transmitting/receiving apparatus
    • 定向耦合器和发射/接收装置
    • US08107892B2
    • 2012-01-31
    • US12423851
    • 2009-04-15
    • Fumi MoritsukaToshiyuki Umeda
    • Fumi MoritsukaToshiyuki Umeda
    • H04B1/44
    • H01P5/227
    • A directional coupler has first to fourth input/output terminals, a first phase shifting unit which is connected between the first input/output terminal and the second input/output terminal, phase-shifts a supplied signal by 90° and outputs a resulting signal, a second phase shifting unit which is connected between the third input/output terminal and the fourth input/output terminal, phase-shifts a supplied signal by 90° and outputs a resulting signal, a first amplifier having an input connected to the third input/output terminal and an output connected to the first input/output terminal, and a second amplifier having an input connected to the fourth input/output terminal and an output connected to the second input/output terminal.
    • 定向耦合器具有第​​一至第四输入/输出端子,连接在第一输入/输出端子和第二输入/输出端子之间的第一移相单元将提供的信号相移90°并输出结果信号, 连接在第三输入/输出端子和第四输入/输出端子之间的第二移相单元将提供的信号相移90°并输出结果信号,第一放大器具有连接到第三输入/ 输出端子和连接到第一输入/输出端子的输出端,第二放大器具有连接到第四输入/输出端子的输入端和连接到第二输入/输出端子的输出端。
    • 6. 发明申请
    • DIRECTIONAL COUPLER AND TRANSMITTING/RECEIVING APPARATUS
    • 方向联轴器和发射/接收装置
    • US20100102897A1
    • 2010-04-29
    • US12423851
    • 2009-04-15
    • Fumi MoritsukaToshiyuki Umeda
    • Fumi MoritsukaToshiyuki Umeda
    • H01P5/18
    • H01P5/227
    • A directional coupler has first to fourth input/output terminals, a first phase shifting unit which is connected between the first input/output terminal and the second input/output terminal, phase-shifts a supplied signal by 90° and outputs a resulting signal, a second phase shifting unit which is connected between the third input/output terminal and the fourth input/output terminal, phase-shifts a supplied signal by 90° and outputs a resulting signal, a first amplifier having an input connected to the third input/output terminal and an output connected to the first input/output terminal, and a second amplifier having an input connected to the fourth input/output terminal and an output connected to the second input/output terminal.
    • 定向耦合器具有第​​一至第四输入/输出端子,连接在第一输入/输出端子和第二输入/输出端子之间的第一移相单元将提供的信号相移90°并输出结果信号, 连接在第三输入/输出端子和第四输入/输出端子之间的第二移相单元将提供的信号相移90°并输出结果信号,第一放大器具有连接到第三输入/ 输出端子和连接到第一输入/输出端子的输出端,第二放大器具有连接到第四输入/输出端子的输入端和连接到第二输入/输出端子的输出端。