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    • 3. 发明申请
    • Electronic component for amplifying high frequency power and radio communication system
    • 用于放大高频电源和无线电通信系统的电子元件
    • US20050245212A1
    • 2005-11-03
    • US10520706
    • 2002-09-05
    • Seikou OnoHitoshi AkamineTetsuaki Adachi
    • Seikou OnoHitoshi AkamineTetsuaki Adachi
    • H03F3/24H03G3/30H04B1/04H04B1/40H03C1/62H04B17/00
    • H04B1/005H01L2224/32225H01L2224/48227H01L2224/73265H01L2924/19105H03F3/24H03F2200/429H03F2203/7236H03G3/3047H04B1/0483H04B1/406H04B2001/0408H01L2924/00
    • A high-frequency power module as a component of a radio communication system capable of performing communications in two frequency bands such as GSM and DCS includes: a first transistor for output detection for receiving a signal which is the same as an input signal of a first power amplification transistor for amplifying a high frequency signal on the GSM side and a first current mirror circuit for passing current proportional to current of the transistor; and a second transistor for output detection for receiving an input signal of a second power amplification transistor for amplifying a high frequency signal on the DCS side and a second current mirror circuit for passing current proportional to current of the transistor. A sense resistor for converting current on the transfer side of the current mirror circuits to voltage, using the voltage as an output level detection signal, comparing the detected output level with a required output level, accordingly controlling the output level, and converting current transferred from the first and second current mirror circuits to voltage is shared by the GSM and DCS.
    • 作为能够在两个频带(例如GSM和DCS)中进行通信的无线电通信系统的组件的高频功率模块包括:用于输出检测的第一晶体管,用于接收与第一个信号的输入信号相同的信号 用于放大GSM侧的高频信号的功率放大晶体管和用于通过与晶体管的电流成比例的电流的第一电流镜电路; 以及用于输出检测的第二晶体管,用于接收用于放大DCS侧的高频信号的第二功率放大晶体管的输入信号和用于通过与晶体管的电流成比例的电流的第二电流镜电路。 一种检测电阻器,用于将电流镜电路的传输侧的电流转换为电压,使用电压作为输出电平检测信号,将检测到的输出电平与所需的输出电平相比较,从而控制输出电平,并转换从 第一和第二电流镜电路到电压由GSM和DCS共享。
    • 4. 发明授权
    • High frequency power amplification electric part and wireless communication system
    • 高频功率放大电气部件和无线通信系统
    • US07064612B2
    • 2006-06-20
    • US10682250
    • 2003-10-10
    • Hitoshi AkamineSeikou OnoMasashi Maruyama
    • Hitoshi AkamineSeikou OnoMasashi Maruyama
    • H03G3/30
    • H03F1/0272H03F3/60H03F2200/294H03F2200/372H03F2200/78H03G3/3042
    • The present invention provides a high frequency power amplification circuit capable of preventing an output power and current consumption from being largely changed even when a load fluctuates in a wireless communication system for detecting an output level necessary for feedback control by a current detecting method. In a high frequency power amplification circuit as a component of a wireless communication system which detects an output level necessary for feedback control by a current detecting method, a capacitive element is interposed between the drain terminal of a power amplification transistor in the final stage and the gate terminal of a transistor constructing a current mirror circuit in a circuit for detecting an output level, and a change in an output power accompanying load fluctuation is reflected in a detection current of the output level detecting circuit.
    • 本发明提供一种高频功率放大电路,即使在用于检测通过电流检测方法的反馈控制所需的输出电平的无线通信系统中的负载波动时,也能够防止输出功率和电流消耗大幅度变化。 在作为通过电流检测方法检测反馈控制所需的输出电平的无线通信系统的组件的高频功率放大电路中,电容元件插在最后级的功率放大晶体管的漏极端子和 在用于检测输出电平的电路中构成电流镜电路的晶体管的栅极端子和伴随负载波动的输出功率的变化被反映在输出电平检测电路的检测电流中。