基本信息:
- 专利标题： Power amplifying circuit and communication apparatus
- 专利标题（中）：功率放大电路和通讯设备
- 申请号：JP2009289272 申请日：2009-12-21
- 公开(公告)号：JP2011130352A 公开(公告)日：2011-06-30
- 发明人： MORIMOTO SHIGERU , MORI KENICHI , KOJIMA GEN , TAKAHASHI KAZUAKI , SHIMADA MIKIHIRO
- 申请人： Panasonic Corp , パナソニック株式会社
- 专利权人： Panasonic Corp,パナソニック株式会社
- 当前专利权人： Panasonic Corp,パナソニック株式会社
- 优先权： JP2009289272 2009-12-21
- 主分类号： H03F3/24
- IPC分类号： H03F3/24 ; H04B1/04
摘要：
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
摘要（中）：
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