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    • 3. 发明授权
    • Low offset automatic frequency tuning circuits for continuous-time filter
    • 低偏移自动频率调谐电路,用于连续时间滤波
    • US06400932B1
    • 2002-06-04
    • US09454389
    • 1999-12-03
    • Chang Jun OhJong Kee KwonJong Ryul LeeWon Chul SongHee Bum JungKyung Soo KimHan Jin ChoOok Kim
    • Chang Jun OhJong Kee KwonJong Ryul LeeWon Chul SongHee Bum JungKyung Soo KimHan Jin ChoOok Kim
    • H04B118
    • H03H11/0422H03L7/06
    • The present invention relates to a tuning circuit, more specifically to a tuning circuit for continuous-time filter capable of making exact the Gm value to minimize the variation of the cutoff frequency due to the variation of process in the Gm-C type of continuous-time filter. According to the invention, a frequency tuning circuit is provided which comprises integrating means for generating a signal discharging from a first reference voltage to a first predetermined value and a signal charging from a second reference voltage to a second predetermined value; offset sampling means for sampling the offset voltages of the Gm cells by receiving a current multiplied by the offset voltages from the Gm cells included in the integrating means and providing a feedback path between the output nodes and the input nodes of the included Gm cells; comparative signal generating means for generating a comparative signal by generating a reference signal by dividing a clock inputted from the external, receiving the signal discharging from the first reference voltage to the first predetermined value and the signal charging from the second reference voltage to the second predetermined value from the integrating means, and comparing the actual intersection and the target intersection of these signals; and control means for generating a control signal to regulate the Gm values of the integrating means and the offset sampling means by receiving the reference signal and the comparative signal from the comparative signal generating means and detecting the phase differences therebetween.
    • 调谐电路技术领域本发明涉及一种调谐电路,更具体地说涉及一种用于连续时间滤波器的调谐电路,其能够精确地确定Gm值,以使由于Gm-C型连续时间滤波器中的工艺变化引起的截止频率的变化最小化, 时间过滤器。 根据本发明,提供了一种频率调谐电路,其包括用于产生从第一参考电压放电到第一预定值的信号的积分装置和从第二参考电压到第二预定值的信号充电; 偏移采样装置,用于通过接收与积分装置中包括的Gm单元的偏移电压相乘的电流来对Gm单元的偏移电压进行采样,并在输出节点和所包括的Gm单元的输入节点之间提供反馈路径; 比较信号发生装置,用于通过将从外部输入的时钟分频,将从第一参考电压放电的信号接收到第一预定值和从第二参考电压到第二预定值的信号充电来产生参考信号, 从积分装置获取值,并比较这些信号的实际交点和目标交点; 以及控制装置,用于通过从比较信号发生装置接收参考信号和比较信号并检测它们之间的相位差,产生控制信号以调节积分装置和偏移采样装置的Gm值。
    • 5. 发明授权
    • Low pass filter
    • 低通滤波器
    • US6091289A
    • 2000-07-18
    • US99388
    • 1998-06-18
    • Won Chul SongJong Ryul LeeChang Jun OhJong Kee KwonOok KimKyung Soo Kim
    • Won Chul SongJong Ryul LeeChang Jun OhJong Kee KwonOok KimKyung Soo Kim
    • H03H9/46H03H11/04H03K5/00
    • H03H11/04
    • There is disclosed a low frequency filter. A low frequency cutoff filter includes a filter circuit having a capacitor connected between an input terminal and an output terminal and an active resistor connected to the output terminal, having a very large resistance, and a bias circuit having a negative feedback to set a biasing voltage of the active resistor to a desired value, thereby implementing the cutoff filter within a semiconductor chip as one set with the capacitor having a small capacitance. A low frequency pass filter includes an active resistor having a very large resistance, means for setting a biasing voltage of the active resistor to a desired value, and a capacitor connected between the output terminal and the ground. Therefore, the low pass filter can be integrated-circuited using even small capacitor.
    • 公开了一种低频滤波器。 低频截止滤波器包括滤波器电路,其具有连接在输入端子和输出端子之间的电容器和连接到具有非常大电阻的输出端子的有源电阻器,以及具有负反馈以设置偏置电压的偏置电路 将所述有源电阻器设置为期望值,从而在半导体芯片内实现截止滤波器作为一组,其中电容器具有小电容。 低通滤波器包括具有非常大电阻的有源电阻器,用于将有源电阻器的偏置电压设置为期望值的装置,以及连接在输出端子和地之间的电容器。 因此,低通滤波器可以使用甚至小的电容器集成。
    • 7. 发明授权
    • Switching circuit and small-size high-efficiency DC-DC converter for portable devices including the same
    • 用于便携式设备的开关电路和小型高效率DC-DC转换器
    • US08274269B2
    • 2012-09-25
    • US12487596
    • 2009-06-18
    • Kwi Dong KimJong Kee KwonJong Dae KimYong Seo Koo
    • Kwi Dong KimJong Kee KwonJong Dae KimYong Seo Koo
    • G05F1/00
    • H02M1/08H02M2001/0032Y02B70/16
    • Provided are a switching circuit and a small-size high-efficiency direct current-to-direct current (DC-DC) converter for portable devices including the same. Using dynamic threshold-complementary metal oxide semiconductor (DT-CMOS) transistors having dynamic threshold voltages as a switching device, the switching circuit maintains a low threshold voltage in a normal mode to improve current drivability while reducing conduction loss, and maintains a high threshold voltage in a standby mode to minimize power consumption. When the switching circuit is employed in a DC-DC converter, power conversion efficiency can be improved by reducing conduction loss in the normal mode, and power consumption can be minimized in the standby mode. Consequently, the DC-DC converter can maximize a use time of a battery of a portable device and can be useful in power supplies of portable devices that are gradually being miniaturized.
    • 提供了一种用于包括其的便携式设备的开关电路和小尺寸高效率直流 - 直流(DC-DC)转换器。 使用具有动态阈值电压的动态阈值互补金属氧化物半导体(DT-CMOS)晶体管作为开关器件,开关电路在正常模式下维持低阈值电压,从而改善电流驱动能力,同时降低导通损耗,并保持高阈值电压 处于待机模式以最小化功耗。 当在DC-DC转换器中采用开关电路时,可以通过降低正常模式下的导通损耗来提高功率转换效率,并且在待机模式下功耗可以最小化。 因此,DC-DC转换器可以使便携式设备的电池的使用时间最大化,并且可以用于逐渐小型化的便携式设备的电源。
    • 10. 发明授权
    • Energy storage system with wired and wireless energy transfer function
    • 储能系统具有有线和无线能量传递功能
    • US09391462B2
    • 2016-07-12
    • US13596618
    • 2012-08-28
    • Yil Suk YangJong Dae KimSe Wan HeoJi Min OhMin Ki KimJong Kee Kwon
    • Yil Suk YangJong Dae KimSe Wan HeoJi Min OhMin Ki KimJong Kee Kwon
    • H01F27/42H02J5/00H02J7/00
    • H02J50/00H02J5/005H02J7/0063H02J7/025
    • Disclosed is an energy storage system provided with a wired and wireless energy transfer function. The energy storage system includes: an energy input unit to which energy generated from a plurality of energy sources is input; an energy input control unit for selecting one energy source from among the plurality of energy sources, and transferring energy of the selected energy source through operation in a wired operation mode or a wireless operation mode; a wireless energy transmitting/receiving unit for wirelessly transmitting/receiving the energy of the selected energy source during the operation in the wireless operation mode of the energy input control unit; an energy storage/control unit for storing the energy of the selected energy source; an energy output unit for consuming the energy stored in the energy storage/control unit; and an energy output control unit for distributing the energy stored in the energy storage/control unit to the energy output unit.
    • 公开了一种具有有线和无线能量传递功能的能量存储系统。 能量存储系统包括:输入从多个能量源产生的能量的能量输入单元; 能量输入控制单元,用于从所述多个能量源中选择一个能量源,并且通过在有线操作模式或无线操作模式中的操作来传送所选择的能量源的能量; 无线能量发送/接收单元,用于在能量输入控制单元的无线操作模式下的操作期间,无线地发送/接收所选择的能量源的能量; 用于存储所选能量源的能量的能量存储/控制单元; 用于消耗存储在能量存储/控制单元中的能量的能量输出单元; 以及能量输出控制单元,用于将存储在能量存储/控制单元中的能量分配给能量输出单元。