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    • 5. 发明专利
    • Power amplifying circuit and communication apparatus
    • 功率放大电路和通讯设备
    • JP2011130352A
    • 2011-06-30
    • JP2009289272
    • 2009-12-21
    • Panasonic Corpパナソニック株式会社
    • MORIMOTO SHIGERUMORI KENICHIKOJIMA GENTAKAHASHI KAZUAKISHIMADA MIKIHIRO
    • H03F3/24H04B1/04
    • H03F1/0261H03F3/245H03F2200/408H03F2200/462H03F2200/465H03F2200/481H03F2200/516H03G3/004
    • PROBLEM TO BE SOLVED: To provide a power amplifying circuit for preventing a change in output power and current of a power amplifier at high speed with high accuracy in response to a changed antenna load.
      SOLUTION: A power amplifier 11 amplifies a high frequency signal to obtain an output signal. A regulator 12 amplifies an input voltage with a predetermined gain, and supplies an output voltage to the power amplifier 11. A current monitor 13 monitors an input current to the regulator 12, to obtain a monitor current. A first multiplier 14 multiplies information on the monitor current by information on the output voltage of the regulator 12, to obtain information on monitor power. A memory 16 stores in advance information on a predetermined reference current. A second multiplier 15 multiplies information on the input voltage by information on the reference current to obtain information on reference power. The regulator 12 comprises a gain control section 121 for controlling the predetermined gain on the basis of the information on the monitor power and the information on the reference power.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 解决的问题:提供一种功率放大电路,用于响应于改变的天线负载,以高精度防止功率放大器的输出功率和电流的变化。 解决方案:功率放大器11放大高频信号以获得输出信号。 调节器12以预定的增益放大输入电压,并将输出电压提供给功率放大器11.电流监视器13监视到调节器12的输入电流,以获得监视电流。 第一乘法器14将关于监视器电流的信息乘以关于调节器12的输出电压的信息,以获得关于监视功率的信息。 存储器16预先存储关于预定参考电流的信息。 第二乘法器15将关于输入电压的信息乘以关于参考电流的信息,以获得关于参考功率的信息。 调节器12包括用于根据关于监视功率的信息和关于参考功率的信息来控制预定增益的增益控制部分121。 版权所有(C)2011,JPO&INPIT
    • 7. 发明专利
    • Semiconductor circuit and testing device
    • 半导体电路和测试设备
    • JP2009239361A
    • 2009-10-15
    • JP2008079234
    • 2008-03-25
    • Advantest Corp株式会社アドバンテスト
    • KOJIMA SHOJIOKAYASU TOSHIYUKI
    • H03K5/01H03F1/30H03K17/16
    • H03F1/0211H03F2200/516H03K19/00369Y10T307/305
    • PROBLEM TO BE SOLVED: To reduce influence on a signal processing circuit by the ripple of a power supply voltage. SOLUTION: A first signal processing circuit 10 performs predetermined signal processing on a first signal S1 to provide a change to a characteristic value thereof, and then outputs a second signal S2. A second signal processing circuit 12 performs predetermined signal processing on the second signal S2 to provide a change to a characteristic value thereof, and then outputs a third signal S3. A first and a second switching power supplies 20 and 22 respectively supply power supply voltages Vdd1 and Vdd2 to the first and second signal processing circuits 10 and 12. An amount of change provided to the characteristic value of the first signal S1 by the first signal processing circuit 10, and an amount of change provided to the characteristic value of the second signal S2 by the second signal processing circuit 12, are dependent on the respective power supply voltages Vdd1 and Vdd2. Phases of the first and the second switching power supplies 20 and 22 are respectively set such that an error between the amount of change in the characteristic value of the first signal S1 and its target value, and an error between that of the second signal S2 and its target value, are to be canceled out by each other. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:通过电源电压的纹波来减小对信号处理电路的影响。 解决方案:第一信号处理电路10对第一信号S1执行预定的信号处理以提供对其特征值的改变,然后输出第二信号S2。 第二信号处理电路12对第二信号S2执行预定的信号处理,以提供对其特征值的改变,然后输出第三信号S3。 第一和第二开关电源20和22分别向第一和第二信号处理电路10和12提供电源电压Vdd1和Vdd2。通过第一信号处理提供给第一信号S1的特性值的变化量 电路10以及由第二信号处理电路12提供给第二信号S2的特性值的变化量取决于相应的电源电压Vdd1和Vdd2。 分别设置第一和第二开关电源20和22的相位,使得第一信号S1的特性值的变化量与其目标值之间的误差与第二信号S2和 其目标值将被彼此抵消。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Driver circuit
    • 驱动电路
    • JP2005217949A
    • 2005-08-11
    • JP2004024464
    • 2004-01-30
    • Advantest Corp株式会社アドバンテスト
    • MATSUMOTO NAOKISEKINO TAKASHI
    • H03K5/02G01R31/319H03F3/30H03F3/45H03K19/0175
    • G01R31/31924H03F3/3076H03F3/45085H03F2200/504H03F2200/516H03F2203/45508H03F2203/45702H03F2203/7203
    • PROBLEM TO BE SOLVED: To provide a driver circuit that has low power consumption and high voltage accuracy.
      SOLUTION: This driver circuit outputs an output signal corresponding to a given input signal, and is provided with: a voltage generating part for outputting output basic voltage corresponding to the input signal; a first buffer circuit for outputting output voltage corresponding to the output basic voltage outputted by the voltage generating part; a second buffer circuit that has greater power consumption than the first buffer circuit, generates voltage corresponding to the output voltage and outputs the voltage as an output signal; a simulation circuit that has a simulation buffer circuit with almost the same characteristic as that of the first buffer circuit and generates simulation voltage corresponding to the output basic voltage outputted by the voltage generating part; and a control part for controlling the output basic voltage outputted by the voltage generating part on the basis of the simulation voltage.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供具有低功耗和高电压精度的驱动电路。 解决方案:该驱动器电路输出与给定输入信号对应的输出信号,并具有:电压产生部分,用于输出与输入信号相对应的输出基本电压; 第一缓冲电路,用于输出与由电压产生部输出的输出基本电压对应的输出电压; 具有比第一缓冲电路大的功耗的第二缓冲电路,产生与输出电压相对应的电压,并输出该电压作为输出信号; 仿真电路具有与第一缓冲电路几乎相同特性的仿真缓冲电路,并产生与电压产生部分输出的输出基本电压对应的模拟电压; 以及控制部,其基于模拟电压来控制由电压产生部输出的输出基本电压。 版权所有(C)2005,JPO&NCIPI