公开(公告)号：US20100007426A1

公开(公告)日：2010-01-14

申请号：US11991577

申请日：2006-09-06

申请人： David Ricketts ,  Donhee Ham ,  Xiaofeng Li

发明人： David Ricketts ,  Donhee Ham ,  Xiaofeng Li

IPC分类号： H03B7/08

CPC分类号： H03L7/099 ,  H03B5/1221 ,  H03B5/1234 ,  H03B5/1243 ,  H03K5/12

摘要： Methods and apparatus for implementing stable self-starting and self-sustaining high-speed electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. Chip-scale nonlinear pulse oscillator devices may be fabricated using III-V semiconductor materials (e.g., GaAs) to attain soliton pulse widths on the order of a few picoseconds or less (e.g., 1 to 2 picoseconds, corresponding to frequencies of approximately 300 GHz or greater). In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that comprises a nonlinear transmission line and a distributed nonlinear amplifier arrangement configured to provide a self-adjusting gain as a function of an average voltage of the oscillator signal. In another example, a nonlinear oscillator employing a lumped nonlinear amplifier and a nonlinear transmission line in a closed loop arrangement may be used in combination with a two-port nonlinear transmission line that provides additional pulse compression for pulses circulating in the oscillator.

摘要翻译： 用于实现稳定的自启动和自持的高速电非线性脉冲（例如，孤子，cnoidal波或准孤子）振荡器的方法和装置。 可以使用III-V半导体材料（例如，GaAs）制造芯片级非线性脉冲振荡器器件，以获得大约几皮秒或更小的孤子脉冲宽度（例如，1到2皮秒，对应于大约300GHz的频率 或更大）。 在一个示例中，非线性脉冲振荡器被实现为闭环结构，其包括非线性传输线和配置为提供作为振荡器信号的平均电压的函数的自调节增益的分布式非线性放大器布置。 在另一示例中，采用集总非线性放大器和闭环布置中的非线性传输线的非线性振荡器可以与为在振荡器中循环的脉冲提供额外的脉冲压缩的双端口非线性传输线路组合使用。

公开(公告)号：US07339440B2

公开(公告)日：2008-03-04

申请号：US11222255

申请日：2005-09-08

申请人： David Ricketts ,  Xiaofeng Li ,  Donhee Ham

发明人： David Ricketts ,  Xiaofeng Li ,  Donhee Ham

IPC分类号： H03B5/08

CPC分类号： H03B5/1852 ,  H03B5/1203 ,  H03B5/1228 ,  H03B2200/0092

摘要： Methods and apparatus for implementing stable self-starting and self-sustaining electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that comprises a nonlinear transmission line, an improved high-pass filter, and a nonlinear amplifier configured to provide a self-adjusting gain as a function of an average voltage of the oscillator signal, to provide a pulse waveform having a desired target amplitude. In one implementation, the nonlinear amplifier and high pass filter functions are integrated in a two stage nonlinear amplifier/filter apparatus employing complimentary NMOS and PMOS amplification components and associated filtering and feedback circuitry configured to essentially implement an electric circuit analog of a saturable absorber via an adaptive bias control technique.

摘要翻译： 用于实现稳定的自启动和自持电气非线性脉冲（例如孤子，cnoidal波或准孤子）振荡器的方法和装置。 在一个示例中，非线性脉冲振荡器被实现为包括非线性传输线，改进的高通滤波器和非线性放大器的闭环结构，其被配置为提供作为平均电压的函数的自调节增益 振荡器信号，以提供具有期望目标振幅的脉冲波形。 在一个实现中，非线性放大器和高通滤波器功能集成在采用互补NMOS和PMOS放大组件的两级非线性放大器/滤波器装置中，并且相关联的滤波和反馈电路被配置为基本上通过经由 自适应偏置控制技术。

公开(公告)号：US08154354B2

公开(公告)日：2012-04-10

申请号：US11991577

申请日：2006-09-06

申请人： David Ricketts ,  Donhee Ham ,  Xiaofeng Li

发明人： David Ricketts ,  Donhee Ham ,  Xiaofeng Li

IPC分类号： H03B5/12

CPC分类号： H03L7/099 ,  H03B5/1221 ,  H03B5/1234 ,  H03B5/1243 ,  H03K5/12

摘要： Methods and apparatus for implementing stable self-starting and self-sustaining high-speed electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. Chip-scale nonlinear pulse oscillator devices may be fabricated using III-V semiconductor materials (e.g., GaAs) to attain soliton pulse widths on the order of a few picoseconds or less (e.g., 1 to 2 picoseconds, corresponding to frequencies of approximately 300 GHz or greater). In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that comprises a nonlinear transmission line and a distributed nonlinear amplifier arrangement configured to provide a self-adjusting gain as a function of an average voltage of the oscillator signal. In another example, a nonlinear oscillator employing a lumped nonlinear amplifier and a nonlinear transmission line in a closed loop arrangement may be used in combination with a two-port nonlinear transmission line that provides additional pulse compression for pulses circulating in the oscillator.

摘要翻译： 用于实现稳定的自启动和自持的高速电非线性脉冲（例如，孤子，cnoidal波或准孤子）振荡器的方法和装置。 可以使用III-V半导体材料（例如，GaAs）来制造芯片级非线性脉冲振荡器器件，以获得大约几皮秒或更小的孤子脉冲宽度（例如，1到2皮秒，对应于大约300GHz的频率 或更大）。 在一个示例中，非线性脉冲振荡器被实现为闭环结构，其包括非线性传输线和配置为提供作为振荡器信号的平均电压的函数的自调节增益的分布式非线性放大器布置。 在另一示例中，采用集总非线性放大器和闭环布置中的非线性传输线的非线性振荡器可以与为在振荡器中循环的脉冲提供额外的脉冲压缩的双端口非线性传输线路组合使用。

公开(公告)号：US20060114550A1

公开(公告)日：2006-06-01

申请号：US11222255

申请日：2005-09-08

申请人： David Ricketts ,  Xiaofeng Li ,  Donhee Ham

发明人： David Ricketts ,  Xiaofeng Li ,  Donhee Ham

IPC分类号： G02F1/35

CPC分类号： H03B5/1852 ,  H03B5/1203 ,  H03B5/1228 ,  H03B2200/0092

摘要： Methods and apparatus for implementing stable self-starting and self-sustaining electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that comprises a nonlinear transmission line, an improved high-pass filter, and a nonlinear amplifier configured to provide a self-adjusting gain as a function of an average voltage of the oscillator signal, to provide a pulse waveform having a desired target amplitude. In one implementation, the nonlinear amplifier and high pass filter functions are integrated in a two stage nonlinear amplifier/filter apparatus employing complimentary NMOS and PMOS amplification components and associated filtering and feedback circuitry configured to essentially implement an electric circuit analog of a saturable absorber via an adaptive bias control technique.

摘要翻译： 用于实现稳定的自启动和自持电气非线性脉冲（例如孤子，cnoidal波或准孤子）振荡器的方法和装置。 在一个示例中，非线性脉冲振荡器被实现为包括非线性传输线，改进的高通滤波器和非线性放大器的闭环结构，其被配置为提供作为平均电压的函数的自调节增益 振荡器信号，以提供具有期望目标振幅的脉冲波形。 在一个实现中，非线性放大器和高通滤波器功能集成在采用互补NMOS和PMOS放大组件的两级非线性放大器/滤波器装置中，并且相关联的滤波和反馈电路被配置为基本上通过经由 自适应偏置控制技术。

公开(公告)号：US20090315631A1

公开(公告)日：2009-12-24

申请号：US12083747

申请日：2006-10-30

申请人： Donhee Ham ,  Xiaofeng Li

发明人： Donhee Ham ,  Xiaofeng Li

IPC分类号： H03B5/18

CPC分类号： H01L51/0048 ,  B82Y10/00 ,  H01L21/31645 ,  H01L51/0541 ,  H03B5/1852

摘要： Methods and apparatus utilizing the quantum inductance of one-dimensional (ID) nanoscale structures (e.g., nanowires, carbon nanotubes). In one exemplary circuit implementation, all elements of a high-frequency circuit path are constituted by nanoscale structures without significant intervening structures (e.g., metal contacts) that would introduce undesirable resistance in the high-frequency circuit path. In this manner, the deleterious effects of contact resistance (e.g., metal-to-nanostructure interfaces) on the quality factor associated with the quantum inductance, and ultimately operation of the circuit, may be significantly reduced or avoided.

摘要翻译： 利用一维（ID）纳米尺度结构（例如纳米线，碳纳米管）的量子电感的方法和装置。 在一个示例性电路实现中，高频电路路径的所有元件由纳米尺度结构构成，而没有在高频电路路径中引入不期望的电阻的明显中间结构（例如金属触点）。 以这种方式，可以显着地减少或避免接触电阻（例如金属与纳米结构界面）对与量子电感相关的品质因素以及电路的最终操作的有害影响。

公开(公告)号：US20180292058A1

公开(公告)日：2018-10-11

申请号：US15886781

申请日：2018-02-01

申请人： Xiaofeng Li

发明人： Xiaofeng Li

IPC分类号： F21S10/04 ,  F21S9/02 ,  F21S6/00 ,  A61L9/03

CPC分类号： F21S10/046 ,  A61L9/03 ,  A61L2209/111 ,  A61L2209/12 ,  A61L2209/133 ,  A61L2209/135 ,  F21S6/001 ,  F21S9/02 ,  F21W2121/00 ,  F21Y2115/10

摘要： Methods, systems, and devices relating to an electronic scented candle that is convenient to use and enables rapid generation and dissipation of scented materials are described. One electronic candle device includes a shell that has a through hole, a flame element protruding through the through hole, an installation lid including a locking base to allow removable coupling of a fragrance container, a scent chamber including a locking clip, a first channel, a second channel, a third channel, and a fourth channel. The scent chamber is removably coupled to the locking base by the locking clip, and an air pump provided to supply pressurized air.

公开(公告)号：USD827898S1

公开(公告)日：2018-09-04

申请号：US29599827

申请日：2017-04-06

申请人： Xiaofeng Li

设计人： Xiaofeng Li

公开(公告)号：USD827189S1

公开(公告)日：2018-08-28

申请号：US29602278

申请日：2017-04-28

申请人： Xiaofeng Li

设计人： Xiaofeng Li

公开(公告)号：USD821440S1

公开(公告)日：2018-06-26

申请号：US29571994

申请日：2016-07-22

申请人： Xiaofeng Li

设计人： Xiaofeng Li

公开(公告)号：US20170363260A1

公开(公告)日：2017-12-21

申请号：US15322237

申请日：2014-11-18

申请人： Xiaofeng Li

发明人： Xiaofeng Li

IPC分类号： F21S6/00 ,  B05B17/08 ,  F21V31/00 ,  F21S10/04 ,  F21S9/02 ,  F21V19/00 ,  F21V23/04 ,  F21W121/02 ,  F21Y2115/10

CPC分类号： F21S6/001 ,  B05B17/08 ,  F21S9/02 ,  F21S10/002 ,  F21S10/04 ,  F21V19/003 ,  F21V23/04 ,  F21V31/005 ,  F21W2121/02 ,  F21Y2115/10

摘要： Provided is an electronic fountain candle, comprising a transparent or semitransparent outer cylinder (9), a battery compartment, a flow-guiding cover (10), an LED/water pump assembly (4), and a control board (3). The outer cylinder (9) is a hollow tube body. The battery compartment is an inverted cup-shaped body, the opening of the cup facing down, the bottom of the cup being on the top, and the cup-shaped body being sleeved inside the outer cylinder (9). A water storage chamber is located at the interior wall of the outer cylinder (9), above the bottom of the battery compartment cup. The LED/water pump assembly (4) is mounted inside the water storage chamber, and comprises: being equipped with an LED-PCB board (42) for an LED, as well as a water pump (43) and a water drainage pipe (41). The LED-PCB board (42) is waterproofed, and the water outlet of the water pump (43) is connected to the water drainage pipe (41). The flow-guiding cover (10) is provided with a flow-guiding hole, and the water drainage pipe (41) is in communication with the flow-guiding hole. The peripheral edge of the flow-guiding cover (10) is lower than the upper end face of the outer cylinder (9), and there is a gap, used for draining water, between the flow-guiding cover (10) and the inner wall of the outer cylinder (9). The control board (3) is mounted inside the battery compartment, and the LED/water pump assembly (4) is electrically connected to the control board (3). The LED of the electronic fountain candle simulates the weak light of a conventional lamp, while the circulation of water simulates the sound of flowing water in a natural environment, creating a natural and tranquil ambiance.