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公开(公告)号：US20050280471A1
公开(公告)日：2005-12-22
申请号：US11149265
申请日：2005-06-10
申请人： Kouichi Matsushita , Kenichi Shimamoto , Kazuhiro Koshio , Kazuhiko Ishimoto , Takayuki Tsutsui
发明人： Kouichi Matsushita , Kenichi Shimamoto , Kazuhiro Koshio , Kazuhiko Ishimoto , Takayuki Tsutsui
CPC分类号： H03F1/0211 , H03F1/30 , H03F1/52 , H03F3/195 , H03F2200/447
摘要： An RF power module in which operating voltage is controlled by a control signal based on amplitude information includes a temperature detecting device which is provided over a semiconductor chip formed with an amplifying transistor or a semiconductor chip formed with a power source circuit; and a detector having a hysteresis characteristic which is provided over the semiconductor chip formed with the device or a different semiconductor chip, applies a bias to the temperature detecting device to compare the state of the device at two reference levels, outputs a signal indicating abnormality when judging that the temperature of the semiconductor chip formed with the temperature detecting device is above a predetermined temperature, and outputs a signal indicating normality when judging that the temperature of the semiconductor chip is below a second predetermined temperature lower than the predetermined temperature.
摘要翻译： 其中工作电压由基于振幅信息的控制信号控制的RF功率模块包括温度检测装置，其设置在形成有放大晶体管的半导体芯片或形成有电源电路的半导体芯片上; 以及设置在形成有该器件或不同半导体芯片的半导体芯片上的具有滞后特性的检测器，对温度检测装置施加偏压以比较两个基准电平的器件的状态，输出指示异常的信号 判断由温度检测装置形成的半导体芯片的温度高于预定温度，并且当判断半导体芯片的温度低于低于预定温度的第二预定温度时，输出表示正常的信号。
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12.发明授权公开(公告)号：US06605999B2
公开(公告)日：2003-08-12
申请号：US09984800
申请日：2001-10-31
IPC分类号： H03F330
CPC分类号： H03F1/0272 , H03F1/0233 , H03F3/193 , H03F2200/294 , H03F2200/372 , H03G1/0017
摘要： A wireless communication apparatus, which is designed to control the output power without using the power control signal sent from the base station, comprises a high-frequency power amplifier for transmission, a detection means which measures the output power of the power amplifier, and an automatic power control circuit which controls the output power of the power amplifier based on information provided by the detection means. The power amplifier includes an amplifying system which has multiple amplifying stages and is connected between the input and output terminals, and bias circuits which supply bias voltages to transistors of the respective amplifying stages. The bias circuits, which supply the bias voltages to the multiple amplifying stages excluding the last amplifying stage, are each made up of multiple resistors. Each of these bias circuits divides with the resistors the voltage of the entered power control signal to produce a bias voltage, which has a linear response to the control signal for low-power mode, to be fed to the control terminal of the amplifying stage. The bias circuit which supplies a bias voltage to the last amplifying stage includes a circuit which produces a bias voltage which has a nonlinear response to the control signal for high-power mode.
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