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    • 2. 发明申请
    • AMPLIFIER CIRCUIT AND WIRELESS COMMUNICATION DEVICE
    • 放大器电路和无线通信设备
    • US20080265995A1
    • 2008-10-30
    • US12109596
    • 2008-04-25
    • Naoki OkamotoHiroyuki KohamaMaki Shibata
    • Naoki OkamotoHiroyuki KohamaMaki Shibata
    • H03G3/18
    • H03G1/0088
    • An amplifier circuit has a current conversion circuit that receives a high frequency signal and produces a signal current according to the high frequency signal; a gain control circuit that includes a control signal input for receiving a control signal, a first output, and a second output, and produces the signal current from the first output or the second output according to the control signal; an impedance circuit that includes a first node connected to the first output, a second node connected to the second output, and a third node, the impedance circuit presenting a predetermined impedance between the nodes; a switch circuit that is inserted between the first output and the first node; and a load impedance unit that is connected to the first output and produces a gain signal representing an amplified high frequency signal.
    • 放大器电路具有电流转换电路,其接收高频信号并根据高频信号产生信号电流; 增益控制电路,其包括用于接收控制信号的控制信号输入,第一输出和第二输出,并根据控制信号从第一输出或第二输出产生信号电流; 阻抗电路,其包括连接到所述第一输出的第一节点,连接到所述第二输出的第二节点和所述第三节点,所述阻抗电路在所述节点之间呈现预定的阻抗; 插入在所述第一输出和所述第一节点之间的开关电路; 以及负载阻抗单元,其连接到所述第一输出并产生表示放大的高频信号的增益信号。
    • 3. 发明授权
    • Amplifier circuit and wireless communication device
    • 放大器电路和无线通信设备
    • US07667541B2
    • 2010-02-23
    • US12109596
    • 2008-04-25
    • Naoki OkamotoHiroyuki KohamaMaki Shibata
    • Naoki OkamotoHiroyuki KohamaMaki Shibata
    • H03G3/10
    • H03G1/0088
    • An amplifier circuit has a current conversion circuit that receives a high frequency signal and produces a signal current according to the high frequency signal; a gain control circuit that includes a control signal input for receiving a control signal, a first output, and a second output, and produces the signal current from the first output or the second output according to the control signal; an impedance circuit that includes a first node connected to the first output, a second node connected to the second output, and a third node, the impedance circuit presenting a predetermined impedance between the nodes; a switch circuit that is inserted between the first output and the first node; and a load impedance unit that is connected to the first output and produces a gain signal representing an amplified high frequency signal.
    • 放大器电路具有电流转换电路,其接收高频信号并根据高频信号产生信号电流; 增益控制电路,其包括用于接收控制信号的控制信号输入,第一输出和第二输出,并根据控制信号从第一输出或第二输出产生信号电流; 阻抗电路,其包括连接到所述第一输出的第一节点,连接到所述第二输出的第二节点和所述第三节点,所述阻抗电路在所述节点之间呈现预定的阻抗; 插入在所述第一输出和所述第一节点之间的开关电路; 以及负载阻抗单元,其连接到所述第一输出并产生表示放大的高频信号的增益信号。