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    • 1. 发明申请
    • METHODS FOR PROPAGATING A NON SINUSOIDAL SIGNAL WITHOUT DISTORTION IN DISPERSIVE LOSSY MEDIA
    • 传播非正常信号的方法,无损失媒体的失真
    • US20080317166A1
    • 2008-12-25
    • US12055983
    • 2008-03-26
    • Robert H. FlakeJohn F. BiskupSu-liang Liao
    • Robert H. FlakeJohn F. BiskupSu-liang Liao
    • H04L27/00
    • H04B3/462G01R31/088G01R31/11H04B3/466H04L1/24H04L25/03834H04L25/12
    • Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin=De−ASD[x−vSDt], where D is a magnitude, Vin is a voltage, t is time, ASD is an attenuation coefficient, and vSD is a propagation velocity; and (b) being truncated at a maximum value. An exemplary apparatus comprises: an exponential waveform generator; an input recorder coupled to an output of the exponential waveform generator; a transmission line under test coupled to the output of the exponential waveform generator; an output recorder coupled to the transmission line under test; an additional transmission line coupled to the transmission line under test; and a termination impedance coupled to the additional transmission line and to a ground.
    • 描述了用于发送具有可控衰减和传播速度的波形的系统和方法。 一种示例性方法包括:产生指数波形,指数波形(a)由方程式Vin = De-A 2 SD [xv 2 SD SD]表征,其中D是 幅度,Vin是电压,t是时间,ASD是衰减系数,vSD是传播速度; 和(b)以最大值截断。 示例性装置包括:指数波形发生器; 耦合到指数波形发生器的输出的输入记录器; 被测耦合到指数波形发生器的输出的被测传输线; 耦合到被测传输线的输出记录器; 耦合到被测传输线的附加传输线; 以及耦合到附加传输线和接地的终端阻抗。
    • 2. 发明授权
    • Time-of-flight measurement based on transfer function and simulated exponential stimulus
    • 基于传递函数和模拟指数刺激的飞行时间测量
    • US08093911B2
    • 2012-01-10
    • US12912392
    • 2010-10-26
    • Robert H. FlakeJohn F. BiskupSu-liang Liao
    • Robert H. FlakeJohn F. BiskupSu-liang Liao
    • G01R27/04G01R27/28
    • H04B3/462G01R31/088G01R31/11H04B3/466H04L1/24H04L25/03834H04L25/12
    • Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin=De−ASD[x−vSDt], where D is a magnitude, Vin is a voltage, t is time, ASD is an attenuation coefficient, and vSD is a propagation velocity; and (b) being truncated at a maximum value. An exemplary apparatus comprises: an exponential waveform generator; an input recorder coupled to an output of the exponential waveform generator; a transmission line under test coupled to the output of the exponential waveform generator; an output recorder coupled to the transmission line under test; an additional transmission line coupled to the transmission line under test; and a termination impedance coupled to the additional transmission line and to a ground.
    • 描述了用于发送具有可控衰减和传播速度的波形的系统和方法。 一种示例性方法包括:产生指数波形,指数波形(a)由等式Vin = De-ASD [x-vSDt]表征,其中D是幅度,Vin是电压,t是时间,ASD是 衰减系数,vSD是传播速度; 和(b)以最大值截断。 示例性装置包括:指数波形发生器; 耦合到指数波形发生器的输出的输入记录器; 被测耦合到指数波形发生器的输出的被测传输线; 耦合到被测传输线的输出记录器; 连接到被测传输线的附加传输线; 以及耦合到附加传输线和接地的终端阻抗。
    • 3. 发明申请
    • Time-of-Flight Measurement Based on Transfer Function and Simulated Exponential Stimulus
    • 基于传递函数和模拟指数激励的飞行时间测量
    • US20110035170A1
    • 2011-02-10
    • US12912392
    • 2010-10-26
    • Robert H. FlakeJohn F. BiskupSu-Liang Liao
    • Robert H. FlakeJohn F. BiskupSu-Liang Liao
    • G06F19/00
    • H04B3/462G01R31/088G01R31/11H04B3/466H04L1/24H04L25/03834H04L25/12
    • Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin=De−ASD[x−vSDt], where D is a magnitude, Vin is a voltage, t is time, ASD is an attenuation coefficient, and vSD is a propagation velocity; and (b) being truncated at a maximum value. An exemplary apparatus comprises: an exponential waveform generator; an input recorder coupled to an output of the exponential waveform generator; a transmission line under test coupled to the output of the exponential waveform generator; an output recorder coupled to the transmission line under test; an additional transmission line coupled to the transmission line under test; and a termination impedance coupled to the additional transmission line and to a ground.
    • 描述了用于发送具有可控衰减和传播速度的波形的系统和方法。 一种示例性方法包括:产生指数波形,指数波形(a)由等式Vin = De-ASD [x-vSDt]表征,其中D是幅度,Vin是电压,t是时间,ASD是 衰减系数,vSD是传播速度; 和(b)以最大值截断。 示例性装置包括:指数波形发生器; 耦合到指数波形发生器的输出的输入记录器; 被测耦合到指数波形发生器的输出的被测传输线; 耦合到被测传输线的输出记录器; 耦合到被测传输线的附加传输线; 以及耦合到附加传输线和接地的终端阻抗。
    • 4. 发明授权
    • Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
    • 在分散损耗介质中传播无畸变的非正弦信号的方法
    • US07375602B2
    • 2008-05-20
    • US11010198
    • 2004-12-10
    • Robert H. FlakeJohn F. BiskupSu-liang Liao
    • Robert H. FlakeJohn F. BiskupSu-liang Liao
    • H04B3/04G01R31/11G01K17/00
    • H04B3/462G01R31/088G01R31/11H04B3/466H04L1/24H04L25/03834H04L25/12
    • Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin=De−ASD[x−vSDt], where D is a magnitude, Vin is a voltage, t is time, ASD is an attenuation coefficient, and vSD is a propagation velocity; and (b) being truncated at a maximum value. An exemplary apparatus comprises: an exponential waveform generator; an input recorder coupled to an output of the exponential waveform generator; a transmission line under test coupled to the output of the exponential waveform generator; an output recorder coupled to the transmission line under test; an additional transmission line coupled to the transmission line under test; and a termination impedance coupled to the additional transmission line and to a ground.
    • 描述了用于发送具有可控衰减和传播速度的波形的系统和方法。 一种示例性方法包括:产生指数波形,指数波形(a)的特征在于&lt; N&gt;&lt; SUP&gt; SUB2> > 其中D是幅度,V < 在中是电压,t是时间,A 是衰减系数,v SS是传播速度; 和(b)以最大值截断。 示例性装置包括:指数波形发生器; 耦合到指数波形发生器的输出的输入记录器; 被测耦合到指数波形发生器的输出的被测传输线; 耦合到被测传输线的输出记录器; 耦合到被测传输线的附加传输线; 以及耦合到附加传输线和接地的终端阻抗。
    • 5. 发明授权
    • Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
    • 在分散损耗介质中传播无畸变的非正弦信号的方法
    • US07859271B2
    • 2010-12-28
    • US12055983
    • 2008-03-26
    • Robert H. FlakeJohn F. Biskup
    • Robert H. FlakeJohn F. Biskup
    • G01R27/04G01R27/32
    • H04B3/462G01R31/088G01R31/11H04B3/466H04L1/24H04L25/03834H04L25/12
    • Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin=De−ASD[x−vSDt], where D is a magnitude, Vin is a voltage, t is time, ASD is an attenuation coefficient, and vSD is a propagation velocity; and (b) being truncated at a maximum value. An exemplary apparatus comprises: an exponential waveform generator; an input recorder coupled to an output of the exponential waveform generator; a transmission line under test coupled to the output of the exponential waveform generator; an output recorder coupled to the transmission line under test; an additional transmission line coupled to the transmission line under test; and a termination impedance coupled to the additional transmission line and to a ground.
    • 描述了用于发送具有可控衰减和传播速度的波形的系统和方法。 一种示例性方法包括:产生指数波形,指数波形(a)由等式Vin = De-ASD [x-vSDt]表征,其中D是幅度,Vin是电压,t是时间,ASD是 衰减系数,vSD是传播速度; 和(b)以最大值截断。 示例性装置包括:指数波形发生器; 耦合到指数波形发生器的输出的输入记录器; 被测耦合到指数波形发生器的输出的被测传输线; 耦合到被测传输线的输出记录器; 耦合到被测传输线的附加传输线; 以及耦合到附加传输线和接地的终端阻抗。
    • 7. 发明授权
    • Methods for transmitting a waveform having a controllable attenuation and propagation velocity
    • 用于发送具有可控衰减和传播速度的波形的方法
    • US06441695B1
    • 2002-08-27
    • US09519922
    • 2000-03-07
    • Robert H. Flake
    • Robert H. Flake
    • H04B304
    • H04L25/12H04B3/462H04B3/466
    • Methods for driving a lossy transmission media with an energy wave defined by a an exponential waveform function. The propagation delay and attenuation of the wave is a function of an exponential coefficient, and its propagation velocity is essentially constant and independent of displacement. Utilizing relationships between the propagation velocity, exponential coefficient, attenuation, and transmission line parameters, one may effectively model various transmission media. One may also determine unknown transmission line parameters, waveform exponential coefficients, attenuation, and/or propagation velocities by utilizing those relationships. By modulating the exponential coefficient, information may be encoded onto a waveform.
    • 用指数波形函数定义的能量波驱动有损传输介质的方法。 波的传播延迟和衰减是指数系数的函数,其传播速度基本上是恒定的,与位移无关。 利用传播速度,指数系数,衰减和传输线参数之间的关系,可以有效地建模各种传输介质。 还可以通过利用这些关系来确定未知的传输线参数,波形指数系数,衰减和/或传播速度。 通过调制指数系数,可以将信息编码到波形上。
    • 8. 发明授权
    • Apparatus and method for assessing solderability
    • 用于评估可焊性的装置和方法
    • US06360935B1
    • 2002-03-26
    • US09237774
    • 1999-01-26
    • Robert H. Flake
    • Robert H. Flake
    • B23K3112
    • B23K31/12B23K1/0016B23K3/08H05K1/0269H05K3/3421H05K3/3442H05K3/3494H05K2201/10636H05K2201/10689H05K2203/163Y02P70/611
    • The invention is an apparatus and method for assessing the solderability of electronic component leads and adjacent mounting surfaces. The apparatus and method enables assessment of solderability of fine pitch surface mount components that may be “leadless” or have such small leads that other methods are unable to make measurements required for assessing solderability. The invention also provides a reliable automated test technology for electronic component solderability. It is based on the use of measurements of the distinctive changes in the IR radiation signal of a wetted soldered connection during the solder reflow process, resulting from rapid changes in emissivity of the materials. This is accomplished through the use of an IR camera connected to a computer, and a substrate heater controlled by the computer to achieve a predetermined temperature profile at the component leads.
    • 本发明是用于评估电子元件引线和相邻安装表面的可焊性的装置和方法。 该装置和方法能够评估可能是“无引线”的细间距表面安装部件的可焊性,或者具有这样的小导线,其他方法不能进行评估可焊性所需的测量。 本发明还提供了用于电子部件可焊接性的可靠的自动测试技术。 这是基于在焊料回流过程中使用对浸润焊接连接的IR辐射信号的显着变化的测量,这是由材料的发射率的快速变化引起的。 这是通过使用连接到计算机的红外摄像机和由计算机控制的基板加热器来实现的,以实现组件引线处的预定温度分布。