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    • 2. 发明授权
    • Phase locked loop and phase locking method
    • 锁相环和锁相方式
    • US07764092B2
    • 2010-07-27
    • US12080012
    • 2008-03-31
    • Woo-Young JungYoung-Min Kim
    • Woo-Young JungYoung-Min Kim
    • H03L7/06
    • H03L7/0896H03L7/0898H03L7/099
    • A phase locked loop includes a charge pump, a voltage-current converter, and a current controlled oscillator. The charge pump generates a pump current based on a bias voltage and a phase difference detection signal, in which the pump current is for adjusting a control voltage. The voltage-current converter is self-biased, generates the bias voltage, and converts the control voltage to a converter current. The current controlled oscillator generates an oscillator current based on the bias voltage, and generates an output signal that has a frequency corresponding to the oscillator current. The phase locked loop is insensitive to a division ratio and PVT variations.
    • 锁相环包括电荷泵,电压 - 电流转换器和电流控制振荡器。 电荷泵基于偏置电压和相位差检测信号产生泵浦电流,其中泵浦电流用于调节控制电压。 电压 - 电流转换器自偏置,产生偏置电压,并将控制电压转换为转换器电流。 电流控制振荡器基于偏置电压产生振荡器电流,并产生具有与振荡器电流对应的频率的输出信号。 锁相环对分频比和PVT变化不敏感。
    • 4. 发明申请
    • Phase locked loop and phase locking method
    • 锁相环和锁相方式
    • US20080186066A1
    • 2008-08-07
    • US12080012
    • 2008-03-31
    • Woo-Young JungYoung-Min Kim
    • Woo-Young JungYoung-Min Kim
    • H03L7/085
    • H03L7/0896H03L7/0898H03L7/099
    • A phase locked loop includes a charge pump, a voltage-current converter, and a current controlled oscillator. The charge pump generates a pump current based on a bias voltage and a phase difference detection signal, in which the pump current is for adjusting a control voltage. The voltage-current converter is self-biased, generates the bias voltage, and converts the control voltage to a converter current. The current controlled oscillator generates an oscillator current based on the bias voltage, and generates an output signal that has a frequency corresponding to the oscillator current. The phase locked loop is insensitive to a division ratio and PVT variations.
    • 锁相环包括电荷泵,电压 - 电流转换器和电流控制振荡器。 电荷泵基于偏置电压和相位差检测信号产生泵浦电流,其中泵浦电流用于调节控制电压。 电压 - 电流转换器自偏置,产生偏置电压,并将控制电压转换为转换器电流。 电流控制振荡器基于偏置电压产生振荡器电流,并产生具有与振荡器电流对应的频率的输出信号。 锁相环对分频比和PVT变化不敏感。
    • 5. 发明申请
    • Phase-locked loop with adaptive bandwidth
    • 具有自适应带宽的锁相环
    • US20070159264A1
    • 2007-07-12
    • US11646101
    • 2006-12-27
    • Woo-Young JungYoung-Min Kim
    • Woo-Young JungYoung-Min Kim
    • H03L7/00
    • H03L7/0891H03L7/093H03L7/099H03L7/18
    • In case that a frequency bandwidth of an output signal of a phase-locked loop (PLL) depends upon a current provided from a charge pump, a control current provided from a voltage-current (VI) converter, a resistance of a loop filter, a conversion constant of the VI converter and a reference frequency applied to a phase-frequency detector (PFD), in the PLL, a variation of the current provided from the charge pump due to effects of process, voltage and temperature (PVT) cancels with a variation of the control current provided from the VI converter due to effects of PVT, and a variation of the resistance of the loop filter due to effects of PVT cancels with a variation of the conversion constant of the VI converter due to effects of PVT.
    • 在锁相环(PLL)的输出信号的频率带宽取决于从电荷泵提供的电流的情况下,从电压 - 电流(VI)转换器提供的控制电流,环路滤波器的电阻, VI转换器的转换常数和施加到相位频率检测器(PFD)的参考频率,在PLL中,由于过程,电压和温度(PVT)的影响,从电荷泵提供的电流变化取决于 由于PVT的影响,由VI转换器提供的控制电流的变化以及由PVT的影响引起的环路滤波器的电阻的变化由于PVT的影响而随着VI转换器的转换常数的变化而消失。
    • 10. 发明申请
    • POLY(ORGANOPHOSPHAZENE) CONTAINING DEGRADATION CONTROLLABLE IONIC GROUP, PREPARATION METHOD THEREOF AND USE THEREOF
    • 含有降解可控离子基团的聚(有机磷),其制备方法及其用途
    • US20140031289A1
    • 2014-01-30
    • US13569737
    • 2012-08-08
    • Soo-Chang SONGYoung-Min Kim
    • Soo-Chang SONGYoung-Min Kim
    • C08G79/02A61K47/34
    • C08G79/025A61K47/34
    • The present invention relates to a thermosensitive phosphazene-based polymer having a degradation controllable ionic group, a use thereof, and a use thereof as a material for delivering bioactive substances. The phosphazene-based polymer according to the present invention has the thermosensitivity of showing the temperature-dependent sol-gel phase transition. Thus, it forms a gel phase at the body temperature when it is injected into the body to make it easy to control the release of bioactive substances such as drugs, and has the functional groups capable of making chemical bonds such as ionic bond, covalent bond, coordinate bond, etc. with drugs and thus is excellent in bearing the drugs. Since it can control the degradation rate depending on the kind of ionic group, it can selectively control the release time depending on the characteristics of drugs. Furthermore, it has an excellent biocompatibility and thus is very useful as a material for delivery of bioactive substances such as drugs, etc.
    • 本发明涉及具有降解可控离子基团的热敏磷腈基聚合物,其用途及其用作输送生物活性物质的材料的用途。 根据本发明的磷腈基聚合物具有显示温度依赖性溶胶 - 凝胶相变的热敏性。 因此,当其注入体内时,其在体温下形成凝胶相,以便容易地控制生物活性物质如药物的释放,并且具有能够进行化学键的官能团,例如离子键,共价键 ,配合药物等,因此具有优异的耐药性。 由于可以根据离子基团的种类控制降解速率,因此可根据药物的特性选择性地控制释放时间。 此外,它具有优异的生物相容性,因此作为用于递送生物活性物质如药物等的材料是非常有用的。