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公开(公告)号：US08655295B2
公开(公告)日：2014-02-18
申请号：US13370535
申请日：2012-02-10
申请人： Tsuyoshi Kogawa , Koji Ogura , Shoji Otaka , Hiroaki Ishihara
发明人： Tsuyoshi Kogawa , Koji Ogura , Shoji Otaka , Hiroaki Ishihara
IPC分类号： H04B1/06
CPC分类号： H04B17/318
摘要： According to one embodiment, a receiving apparatus includes a variable gain amplifier, comparator, and signal processor. The comparator compares a signal level of the second signal with a first threshold to generate a third signal, a signal level of the third signal being set to a high signal if the signal level of the second signal is greater than the first threshold. The signal processor determines presence of a signal if a rate of high signals in third signals for a period is greater than a second threshold. The second threshold is set to a first value when the control of the gain is performed and set to a second value when the demodulation processing is performed. The first value is greater than the second value.
摘要翻译： 根据一个实施例，接收设备包括可变增益放大器，比较器和信号处理器。 比较器将第二信号的信号电平与第一阈值进行比较以产生第三信号，如果第二信号的信号电平大于第一阈值，则将第三信号的信号电平设置为高信号。 如果在一段时间内的第三信号中的高信号的速率大于第二阈值，则信号处理器确定信号的存在。 当执行增益的控制时，第二阈值被设置为第一值，并且当执行解调处理时将其设置为第二值。 第一个值大于第二个值。
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公开(公告)号：US20120231756A1
公开(公告)日：2012-09-13
申请号：US13415922
申请日：2012-03-09
申请人： Shoji Otaka , Tsuyoshi Kogawa , Koji Ogura , Toshiyuki Umeda , Takafumi Sakamoto , Fumi Moritsuka , Hiroaki Ishihara
发明人： Shoji Otaka , Tsuyoshi Kogawa , Koji Ogura , Toshiyuki Umeda , Takafumi Sakamoto , Fumi Moritsuka , Hiroaki Ishihara
IPC分类号： H04B1/16
CPC分类号： H03G3/3068 , H03G3/20
摘要： A receiving apparatus includes a variable gain unit to change between a first gain and a smaller second gain, and to amplify a received signal to obtain an amplified signal; a comparator to compare a power of the amplified signal with a reference value; and a controller to set a gain to the first gain while in a standby state, to reset a gain to a third gain between the first and second gains if in a standby state the power of the received signal is larger than the reference value, and then to set a gain to the first gain and return to the standby state if the power is equal to or lower than the reference value, or if not, to a fourth gain between the first and third gains.
摘要翻译： 接收装置包括：可变增益单元，用于在第一增益和较小的第二增益之间变化，并放大接收信号以获得放大信号; 比较器，用于将放大信号的功率与参考值进行比较; 以及控制器，用于在待机状态下将增益设定为所述第一增益，以在待机状态下将所述第一和第二增益之间的增益重置为第三增益，所述接收信号的功率大于所述参考值，以及 然后将增益设置为第一增益，如果功率等于或低于参考值，或者如果不是，则返回到待机状态，达到第一和第三增益之间的第四增益。
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公开(公告)号：US09614487B2
公开(公告)日：2017-04-04
申请号：US13415922
申请日：2012-03-09
申请人： Shoji Otaka , Tsuyoshi Kogawa , Koji Ogura , Toshiyuki Umeda , Takafumi Sakamoto , Fumi Moritsuka , Hiroaki Ishihara
发明人： Shoji Otaka , Tsuyoshi Kogawa , Koji Ogura , Toshiyuki Umeda , Takafumi Sakamoto , Fumi Moritsuka , Hiroaki Ishihara
CPC分类号： H03G3/3068 , H03G3/20
摘要： A receiving apparatus includes a variable gain unit to change between a first gain and a smaller second gain, and to amplify a received signal to obtain an amplified signal; a comparator to compare a power of the amplified signal with a reference value; and a controller to set a gain to the first gain while in a standby state, to reset a gain to a third gain between the first and second gains if in a standby state the power of the received signal is larger than the reference value, and then to set a gain to the first gain and return to the standby state if the power is equal to or lower than the reference value, or if not, to a fourth gain between the first and third gains.
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公开(公告)号：US20120034875A1
公开(公告)日：2012-02-09
申请号：US13052371
申请日：2011-03-21
CPC分类号： H03G3/3052 , H03F3/195 , H03F3/45475 , H03F3/45977 , H03F2200/321 , H03F2200/451 , H03F2203/45138 , H03F2203/45424 , H03F2203/45438 , H03F2203/45446 , H03F2203/45522
摘要： 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, again 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.
摘要翻译： 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，再次控制器控制第一放大器的放大增益; 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。
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5.发明授权Radio apparatus having first and second amplifiers and which performs direct current offset correction of the first and second amplifiers 有权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公开(公告)号：US08489030B2
公开(公告)日：2013-07-16
申请号：US13052371
申请日：2011-03-21
IPC分类号： H04B1/00
CPC分类号： H03G3/3052 , H03F3/195 , H03F3/45475 , H03F3/45977 , H03F2200/321 , H03F2200/451 , H03F2203/45138 , H03F2203/45424 , H03F2203/45438 , H03F2203/45446 , H03F2203/45522
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07876162B2
公开(公告)日：2011-01-25
申请号：US12558807
申请日：2009-09-14
IPC分类号： H03F3/14
CPC分类号： H03F3/602 , H03F3/26 , H03F2200/537 , H03F2200/541 , H03F2200/543
摘要： An amplifier includes: a substrate; first to fourth amplifying units arranged on the substrate and each having first and second terminals, and each amplifying first and second signals to generate first and second amplified signals; a first inductive line arranged on the substrate, connecting the first terminal of the first amplifying unit and the first terminal of the second amplifying unit, and having a linear portion and a bending portion; a second inductive line arranged on the substrate, connecting the second terminal of the second amplifying unit and the first terminal of the third amplifying unit, and having a linear portion and a bending portion; a third inductive line arranged on the substrate, connecting the second terminal of the third amplifying unit and the first terminal of the fourth amplifying unit, and having a linear portion and a bending portion; a fourth inductive line arranged on the substrate, connecting the second terminal of the fourth amplifying unit and the second terminal of the first amplifying unit, and having a linear portion and a bending portion; and a fifth inductive line which establishes magnetic field coupling with the first to fourth inductive lines, and has third and fourth terminals, combines the plurality of the first amplified signals amplified to output the first combined signal from the third terminal, and combines the plurality of the second amplified signals to output the second combined signal from the fourth terminal.
摘要翻译： 放大器包括：基板; 布置在基板上的第一至第四放大单元，每个具有第一和第二端子，并且每个放大第一和第二信号以产生第一和第二放大信号; 布置在所述基板上的第一感应线，连接所述第一放大单元的第一端子和所述第二放大单元的所述第一端子，并且具有直线部分和弯曲部分; 布置在基板上的第二感应线，连接第二放大单元的第二端子和第三放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第三感应线，连接第三放大单元的第二端子和第四放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第四感应线，连接第四放大单元的第二端子和第一放大单元的第二端子，并具有直线部分和弯曲部分; 以及第五感应线，其与第一至第四感应线建立磁场耦合，并且具有第三和第四端子，将被放大的多个第一放大信号组合以输出来自第三端子的第一组合信号，并将多个 第二放大信号以从第四终端输出第二组合信号。
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公开(公告)号：US20100203851A1
公开(公告)日：2010-08-12
申请号：US12553180
申请日：2009-09-03
IPC分类号： H04B1/02
CPC分类号： H04B1/0475 , H03F1/3247 , H03F1/3252 , H03F1/34 , H03F3/19 , H03F3/24 , H03F2200/204 , H03F2200/336 , H03F2200/411 , H03F2200/451 , H04B2001/0433
摘要： A wireless transmission device includes an adding/subtracting unit configured to subtract a second signal and a third signal from a first signal to generate the second signal; a modulating unit configured to modulate the second signal to generate a fourth signal; a demodulating unit configured to demodulate the fourth signal to generate the third signal; and a transmitting unit configured to transmit the fourth signal.
摘要翻译： 无线传输装置包括：加法/减法单元，被配置为从第一信号中减去第二信号和第三信号以产生第二信号; 调制单元，被配置为调制所述第二信号以产生第四信号; 解调单元，被配置为对所述第四信号进行解调以产生所述第三信号; 以及发送单元，被配置为发送所述第四信号。
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公开(公告)号：US09343225B2
公开(公告)日：2016-05-17
申请号：US13717477
申请日：2012-12-17
申请人： Kohei Onizuka , Shoji Otaka , Hiroaki Ishihara , Fumi Moritsuka
发明人： Kohei Onizuka , Shoji Otaka , Hiroaki Ishihara , Fumi Moritsuka
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20100225397A1
公开(公告)日：2010-09-09
申请号：US12558807
申请日：2009-09-14
IPC分类号： H03F3/26
CPC分类号： H03F3/602 , H03F3/26 , H03F2200/537 , H03F2200/541 , H03F2200/543
摘要： An amplifier includes: a substrate; first to fourth amplifying units arranged on the substrate and each having first and second terminals, and each amplifying first and second signals to generate first and second amplified signals; a first inductive line arranged on the substrate, connecting the first terminal of the first amplifying unit and the first terminal of the second amplifying unit, and having a linear portion and a bending portion; a second inductive line arranged on the substrate, connecting the second terminal of the second amplifying unit and the first terminal of the third amplifying unit, and having a linear portion and a bending portion; a third inductive line arranged on the substrate, connecting the second terminal of the third amplifying unit and the first terminal of the fourth amplifying unit, and having a linear portion and a bending portion; a fourth inductive line arranged on the substrate, connecting the second terminal of the fourth amplifying unit and the second terminal of the first amplifying unit, and having a linear portion and a bending portion; and a fifth inductive line which establishes magnetic field coupling with the first to fourth inductive lines, and has third and fourth terminals, combines the plurality of the first amplified signals amplified to output the first combined signal from the third terminal, and combines the plurality of the second amplified signals to output the second combined signal from the fourth terminal.
摘要翻译： 放大器包括：基板; 布置在基板上的第一至第四放大单元，每个具有第一和第二端子，并且每个放大第一和第二信号以产生第一和第二放大信号; 布置在所述基板上的第一感应线，连接所述第一放大单元的第一端子和所述第二放大单元的所述第一端子，并且具有直线部分和弯曲部分; 布置在基板上的第二感应线，连接第二放大单元的第二端子和第三放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第三感应线，连接第三放大单元的第二端子和第四放大单元的第一端子，并具有直线部分和弯曲部分; 布置在基板上的第四感应线，连接第四放大单元的第二端子和第一放大单元的第二端子，并具有直线部分和弯曲部分; 以及第五感应线，其与第一至第四感应线建立磁场耦合，并且具有第三和第四端子，将被放大的多个第一放大信号组合以输出来自第三端子的第一组合信号，并将多个 第二放大信号以从第四终端输出第二组合信号。
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公开(公告)号：US08451942B2
公开(公告)日：2013-05-28
申请号：US12957856
申请日：2010-12-01
IPC分类号： H04K1/02
CPC分类号： H04L27/366 , H03F1/34 , H03F2200/57 , H03G3/3042 , H04B17/21 , H04L27/362 , H04W52/52
摘要： In one embodiment, a wireless transmission apparatus is disclosed. The apparatus includes a generator unit, an amplitude adjuster unit, a phase adjuster unit, and a setting unit. The generator unit generates an amplitude control signal that minimizes an amplitude difference and a phase control signal that minimizes a phase difference in a state in which a power is set during an OFF period of a switch. The amplitude adjuster unit adjusts an amplitude of a feedback RF signal according to the amplitude control signal during an ON period of the switch. The phase adjuster unit adjusts a phase of a local signal according to the phase control signal during the ON period. The setting unit sets, for a Cartesian loop, a first loop gain when the switch is OFF, and a second loop gain higher than the first loop gain when the switch is turned from OFF to ON.
摘要翻译： 在一个实施例中，公开了一种无线传输装置。 该装置包括发电机单元，振幅调节单元，相位调整单元和设定单元。 发电机单元产生使振幅差最小化的幅度控制信号和在开关断开期间功率被设定的状态下的相位差最小化的相位控制信号。 幅度调整单元在开关的导通期间根据幅度控制信号来调整反馈RF信号的幅度。 相位调整单元根据ON期间的相位控制信号调整本地信号的相位。 设置单位为笛卡尔回路设置开关关闭时的第一个环路增益，当开关从OFF变为ON时，第二个环路增益高于第一个环路增益。
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