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    • 7. 发明申请
    • General-purpose wideband amplifier
    • 通用宽带放大器
    • US20050270098A1
    • 2005-12-08
    • US10932545
    • 2004-09-01
    • Xuejun ZhangJianjun Zhou
    • Xuejun ZhangJianjun Zhou
    • H03F1/42H03F3/21H03F3/45H03G1/00
    • H03F3/211H03F1/42H03F3/45179H03F2200/294H03F2200/36H03F2200/372H03F2200/39H03F2203/45481H03G1/0023
    • A single-stage amplifier includes (1) first and second “gain” transistors coupled in a common source configuration, (2) first and second resistors providing self-biasing for the first and second transistors, respectively, (3) first and second current sources providing bias currents for the first and second transistors, respectively, and (4) a load impedance coupled between the drains of the first and second transistors. The amplifier may further include (5) third and fourth “compensation” transistors coupled in parallel with, and used to compensate parasitic capacitances of, the first and second transistors, respectively, and (6) third and fourth resistors providing self-biasing for the third and fourth transistors, respectively. Variable gain may be achieved by varying the bias currents for the gain transistors. A two-stage amplifier may be formed with two stages coupled in cascade, with each stage including most or all of the circuit elements of the single-stage amplifier.
    • 单级放大器包括(1)以公共源配置耦合的第一和第二“增益”晶体管,(2)分别为第一和第二晶体管提供自偏压的第一和第二电阻器,(3)第一和第二电流 源极分别为第一和第二晶体管提供偏置电流,以及(4)耦合在第一和第二晶体管的漏极之间的负载阻抗。 放大器还可以包括(5)分别与第一和第二晶体管并联耦合并用于补偿第一和第二晶体管的寄生电容的第三和第四“补偿”晶体管,以及(6)第三和第四电阻器为 第三和第四晶体管。 可以通过改变增益晶体管的偏置电流来实现可变增益。 可以形成两级放大器,其级联耦合两级,每级包括单级放大器的大部分或全部电路元件。
    • 9. 发明申请
    • POWER SUPPLY MODULE AND POWER SUPPLY SYSTEM
    • 电源模块和电源系统
    • US20130232362A1
    • 2013-09-05
    • US13812128
    • 2011-07-26
    • Jianjun Zhou
    • Jianjun Zhou
    • G06F1/32
    • G06F1/3287G06F1/263G06F1/30G06F11/2015H02J1/10Y02D10/171
    • The present disclosure provides a power supply module and a power supply system. The power supply module is used as a first power supply module in a computing system which further includes a second power supply module. The first power supply module and the second power supply module are cascaded in sequence. The first power supply module is in a power supplying state and the second power supply module is in an off state. The first power supply module itself is capable of automatically determining whether to turn on another power supply module or not, without any human intervention. In this way, the power distribution board can be simplified, or even eliminated, in which case the individual power supply modules can be connected by wire to reduce the cost.
    • 本公开提供了电源模块和电源系统。 电源模块用作计算系统中的第一电源模块,其还包括第二电源模块。 第一电源模块和第二电源模块依次级联。 第一电源模块处于供电状态,第二电源模块处于关闭状态。 第一电源模块本身能够自动确定是否打开另一个电源模块,而无需人为干预。 以这种方式,可以简化或甚至消除配电板,在这种情况下,可以通过电线连接各个电源模块以降低成本。