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    • 4. 发明申请
    • SIMPLE SELF-BIASED CASCODE AMPLIFIER CIRCUIT
    • 简单的自放映象放大器电路
    • WO2004042916A1
    • 2004-05-21
    • PCT/IB2003/004687
    • 2003-10-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.U.S. PHILIPS CORPORATION
    • LUO, Sifen
    • H03F1/20
    • H03F1/22H03F1/20H03F1/302H03F3/3432H03F2200/108H03F2200/18
    • A self-biased cascode amplifier circuit includes first and second transistors connected in series and coupled between a dc voltage source terminal and a common terminal. An input signal terminal is coupled to a control electrode of the first transistor, and an output signal terminal is coupled to an output terminal of the second transistor. An integrated bias circuit is coupled between the dc voltage source terminal and the common terminal for internally biasing both the first and the second transistors without the use of an external bias supply or a direct bias connection to the dc voltage source. This arrangement provides a fully self-biased cascode amplifier circuit having improved performance and a simple and compact configuration.
    • 自偏置级联放大器电路包括串联连接在直流电压源端子和公共端子之间的第一和第二晶体管。 输入信号端子耦合到第一晶体管的控制电极,输出信号端耦合到第二晶体管的输出端。 集成偏置电路耦合在直流电压源端子和公共端子之间,用于内部偏置第一和第二晶体管,而不需要使用外部偏置电源或与直流电压源的直接偏置连接。 这种布置提供了具有改进的性能和简单且紧凑的配置的完全自偏置共源共栅放大器电路。
    • 7. 发明申请
    • APPARATUS FOR PROVIDING AMPLIFICATION WITH MULTI-FEEDBACK PATH
    • 用于提供多反馈路径放大的装置
    • WO2006086924A1
    • 2006-08-24
    • PCT/CN2006/000127
    • 2006-02-16
    • TUBE AMP SDN. BHD.TUBE AMP LIMITEDWONG, Pak, KoonLAU, Ming, Ing
    • WONG, Pak, KoonLAU, Ming, Ing
    • H03F3/42
    • H03F3/30H03F1/0211H03F1/20H03F1/34H03F1/52H03F3/02H03F3/181H03F3/21H03F3/3033H03F3/42H03F2200/03H03F2200/549
    • There is disclosed an apparatus for amplification comprises of a front-end input stage (110) having a driver module (120), multi-feedback port (102), a phase inversion stage (130) with improved signal coupling, distributed negative feedback (300) and an output stage (150) with asymmetry output device. The apparatus also includes a balanced equalization method using negative feedback where the output stage providing negative multiple feedback together with predetermined output impedance, separated bias control and signal drive for each of the output device. Power supply (250) is implemented having dual power transformer (230) which provides compensated bias for the output device. In the preferred embodiment, the apparatus also includes means to increase slew rate, means for providing distributed negative feedback to reduce phase shift, means to bootstrap upper output device, means for differential adjustment for feedback, means to drive high voltage and current drive signal. Short circuit protection for speaker, means to minimize lethal DC output at output terminal, means for obtaining suitable high tension voltage and bias circuit and output stage having all devices separately fused to provide indication of faulty output device are also disclosed.
    • 公开了一种用于放大的装置,包括具有驱动器模块(120)的前端输入级(110),多反馈端口(102),具有改进的信号耦合的相位反转级(130),分布式负反馈 300)和具有不对称输出装置的输出级(150)。 该装置还包括使用负反馈的平衡均衡方法,其中输出级提供负多重反馈以及每个输出装置的预定输出阻抗,分离的偏置控制和信号驱动。 电源(250)实现了具有为输出设备提供补偿偏置的双电源变压器(230)。 在优选实施例中,该装置还包括增加压摆率的装置,用于提供分布式负反馈以减少相移的装置,用于自举上输出装置的装置,用于反馈的差分调整装置,驱动高电压和电流驱动信号的装置。 扬声器的短路保护,意味着最小化输出端子处的致死直流输出,用于获得合适的高压电压和偏置电路的装置以及具有单独熔断的所有装置的输出级以提供故障输出装置的指示。