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    Fast starting on-chip crystal oscillation circuit
    17.
    发明申请
    Fast starting on-chip crystal oscillation circuit 失效
    快速启动片上晶体振荡电路

    公开(公告)号：US20050219004A1

    公开(公告)日：2005-10-06

    申请号：US11140779

    申请日：2005-05-31

    Applicant: Meng-An Pan

    Inventor： Meng-An Pan

    IPC: H03B5/06 ,  H03B5/36 ,  H03B5/32

    CPC classification number: H03B5/36 ,  H03B5/06

    Abstract: A fast starting on-chip crystal oscillation circuit includes a power supply (Vdd) integrated circuit pad, a power return (Vss) integrated circuit pad, a 1st crystal integrated circuit pad, a 2nd crystal integrated circuit pad, a 1st transistor, a 2nd transistor, an inverter, a resistor, and two capacitors. The 1st and 2nd crystal IC pads couple a 1st and 2nd node of an external crystal oscillator to the fast starting on-chip crystal oscillation circuit. The 1st transistor, when activated, couples a power source connection of the inverter to the Vdd IC pad. The 2nd transistor, when activated, couples a power return connection of the inverter to the Vss IC pad. The input of the inverter is coupled to the 1st crystal IC pad and the output of the inverter is coupled to the 2nd crystal IC pad. The resistor is coupled in parallel with the inverter while the 1st capacitor is coupled to the input of the inverter and to the Vss IC pad. The 2nd capacitor is coupled to the output of the inverter and to the Vss IC pad. When the 1st and 2nd transistors are activated, an impulse voltage occurs between the 1st and 2nd crystal IC pads to initiate the oscillation of the crystal oscillator.

    Abstract translation: 快速启动片上晶体振荡电路包括电源（Vdd）集成电路焊盘，功率返回（V SUB）集成电路焊盘，1 - >电容器耦合到反相器的输入端并连接到V SS芯片。 第二和第二电容器耦合到反相器的输出端和V SS芯片焊盘。 当第一和第二和第二晶体管被激活时，在第一和第二和第二晶体管之间产生脉冲电压， 晶体IC焊盘启动晶体振荡器的振荡。

    Method and system for an LC resonant current gain boosting amplifier
    18.
    发明授权
    Method and system for an LC resonant current gain boosting amplifier 有权
    LC谐振电流增益放大器的方法和系统

    公开(公告)号：US08410823B2

    公开(公告)日：2013-04-02

    申请号：US11619803

    申请日：2007-01-04

    Applicant: Yuyu Chang ,  Meng-An Pan

    Inventor： Yuyu Chang ,  Meng-An Pan

    IPC: H02M11/00 ,  H03F3/45

    CPC classification number: H03F3/195 ,  H03F1/08 ,  H03F3/191 ,  H03F3/45475 ,  H03F2200/168 ,  H03F2200/451 ,  H03F2200/91 ,  H03F2203/45136

    Abstract: Aspects of a method and system for an integrated LC resonant current gain boosting amplifier may include amplifying within a chip, via an on-chip LC current gain circuit, an alternating current (AC) generated by an on-chip voltage-to-current converter, and converting within the chip, via an on-chip current-to-voltage circuit; the amplified alternating current to an output voltage. The on-chip LC current gain circuit comprises only passive components, which may include one or more resistors, one or more capacitors, and one or more inductors.

    Abstract translation: 用于集成LC谐振电流增益升压放大器的方法和系统的方面可以包括通过片上LC电流增益电路在芯片内放大由片上电压 - 电流转换器产生的交流（AC） ，并通过片上电流 - 电压电路在芯片内转换; 放大的交流电流达到输出电压。 片上LC电流增益电路仅包括无源部件，其可以包括一个或多个电阻器，一个或多个电容器和一个或多个电感器。

    Independent LO IQ tuning for improved image rejection
    20.
    发明授权
    Independent LO IQ tuning for improved image rejection 有权
    独立的LO IQ调谐，改善了图像抑制

    公开(公告)号：US07848453B2

    公开(公告)日：2010-12-07

    申请号：US11169008

    申请日：2005-06-29

    Applicant: Meng-An Pan

    Inventor： Meng-An Pan

    IPC: H04L27/36

    CPC classification number: H03C3/40

    Abstract: A transmitter includes a first amplifier to amplify an in-phase oscillator signal to produce an in-phase mixing signal and a second amplifier to amplify a quadrature-phase oscillator signal to produce a quadrature-phase mixing signal. A first mixer mixes the in-phase mixing signal with a first information signal to produce a first output signal. A second mixer mixes the quadrature-phase mixing signal with a second information signal to produce a second output signal. The first output signal and an inverted second output signal are summed to produce a transmitter output signal that includes an image signal caused by a phase imbalance between the in-phase and quadrature-phase mixing signals. An image monitor monitors the image signal and reduces or eliminates the phase imbalance by independently adjusting a phase of the in-phase mixing signal and/or a phase of the quadrature-phase mixing signal. Consequently, a power of the image signal is reduced or eliminated.

    Abstract translation: 发射机包括第一放大器，用于放大同相振荡器信号以产生同相混合信号;以及第二放大器，放大正交相位振荡器信号以产生正交相混频信号。 第一混频器将同相混合信号与第一信息信号混合以产生第一输出信号。 第二混频器将正交相混合信号与第二信息信号混合以产生第二输出信号。 将第一输出信号和反相第二输出信号相加以产生包括由同相和正交相混频信号之间的相位不平衡引起的图像信号的发射机输出信号。 图像监视器监视图像信号，并且通过独立地调整同相混合信号的相位和/或正交相位混合信号的相位来减小或消除相位不平衡。 因此，减少或消除了图像信号的功率。

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