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    • 1. 发明申请
    • CURRENT ENHANCED DRIVER FOR HIGH-POWER SOLID-STATE RADIO FREQUENCY POWER AMPLIFIERS
    • 目前用于大功率固态无线电频率功率放大器的增强型驱动器
    • WO2016204856A1
    • 2016-12-22
    • PCT/US2016/028063
    • 2016-04-18
    • ERIDAN COMMUNICATIONS, INC.
    • KHANDAVALLI, Chandra
    • H04B1/16H04B1/04H04B1/06
    • H03F3/193H03F1/0227H03F3/245H03F3/3001H03F2200/102H03F2200/108H03F2200/408H03F2200/411H03F2200/451
    • A high-power solid-state RFPA includes an output stage having a power transistor and a current enhanced driver that drives the output stage. The current enhanced driver includes an inductor and first and second transistors arranged in totem-pole-like configuration. When the first transistor is turned on and the second transistor is turned off, the inductor supplies a first charging current to the output stage, to assist in charging the input gate-source capacitor (Cgs) of the power transistor in the output stage. The first transistor further provides a second charging current that supplements the first charging current, thereby enhancing charging of the gate-source capacitor Cgs. Conversely, when the first transistor of the driver is turned off and the second transistor is turned on, the second transistor provides a discharge path through which the gate-source capacitor Cgs can discharge.
    • 高功率固态RFPA包括具有功率晶体管和驱动输出级的电流增强驱动器的输出级。 电流增强型驱动器包括电感器和布置成图腾柱状配置的第一和第二晶体管。 当第一晶体管导通并且第二晶体管截止时,电感器向输出级提供第一充电电流,以帮助在输出级中对功率晶体管的输入栅源电容器(Cgs)充电。 第一晶体管还提供补充第一充电电流的第二充电电流,从而增强栅源电容器Cgs的充电。 相反,当驱动器的第一晶体管截止并且第二晶体管导通时,第二晶体管提供栅极 - 源极电容器Cgs可以通过其放电的放电路径。