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    • 8. 发明公开
    • High frequency tuned amplifier used as a buffer circuit
    • Als Pufferschaltung angewandter abgestimmterVerstärker
    • EP1054510A2
    • 2000-11-22
    • EP00303919.5
    • 2000-05-10
    • ALPS ELECTRIC CO., LTD.
    • Nakano, Kazuhiro, c/o Alps Electric Co., Ltd.Noumi, Hiroki, c/o Alps Electric Co., Ltd.
    • H03J5/24
    • H03J5/242H03F3/191H03F2200/111H03F2200/417
    • The high frequency tuning amplifier (3) for buffer has a tuning circuit (8) consisting of a serial circuit of the first (20) and second (21) inductors connected between the output of transistor amplifying stage and the power source, a first capacitor (22) connected in parallel to the serial circuit of first and second inductors, a serial circuit of the second (23) and third (24) capacitors connected in parallel to the second inductor and a switching element (26) to which a band switch voltage is supplied, connected between the connecting point of the second and third capacitors and the reference voltage point. The turning circuit is turned to the high band frequency when the switching element is turned ON and to the low band frequency when the switching element is turned OFF.
    • 用于缓冲器的高频调谐放大器(3)具有由连接在晶体管放大级的输出端与电源之间的第一(20)和第二(21)电感器的串联电路组成的调谐电路(8),第一电容器 (22)并联连接到第一和第二电感器的串联电路,并联连接到第二电感器的第二(23)和第三(24)电容器的串联电路和一个开关元件(26),频带开关 电压被提供,连接在第二和第三电容器的连接点和参考电压点之间。 当开关元件接通时,转向电路转为高频带频率,当开关元件断开时转向低频带频率。
    • 10. 发明公开
    • TUNABLE LOADLINE
    • ABSTIMMBARE LADELINIE
    • EP3084958A1
    • 2016-10-26
    • EP14825002.0
    • 2014-12-12
    • Qualcomm Incorporated
    • HADJICHRISTOS, AristotelePRESTI, Calogero DavideNEJATI, Babak
    • H03F1/56H03F3/195H03F3/24
    • H03F1/565H03F3/19H03F3/191H03F3/195H03F3/245H03F2200/111H03F2200/378H03F2200/387H03F2200/391H03F2200/417H03F2200/423
    • A tunable loadline is disclosed. In an exemplary embodiment, an apparatus includes an amplifier configured to output an amplified signal having a selected power level and a first impedance network coupled to receive the amplified signal at an input terminal and generate a first output signal having a first power level at a first output terminal. The first impedance network being configured to load the amplified signal to convert the selected power level to the first power level. The apparatus also includes a second impedance network configured to selectively receive the first output signal and generate a second output signal having a second power level at a second output terminal. The second impedance network being configured to combine with the first impedance network to load the amplified signal to convert the selected power level to the second power level.
    • 公开了一种可调加载线。 在示例性实施例中,一种装置包括:放大器,被配置为输出具有所选功率电平的放大信号和耦合以在输入端接收放大信号的第一阻抗网络,并产生具有第一功率电平的第一输出信号 输出端子。 第一阻抗网络被配置为加载放大的信号以将所选择的功率电平转换为第一功率电平。 该装置还包括被配置为选择性地接收第一输出信号并且在第二输出端产生具有第二功率电平的第二输出信号的第二阻抗网络。 第二阻抗网络被配置为与第一阻抗网络组合以加载放大的信号以将所选择的功率电平转换为第二功率电平。