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1. 发明授权

US07649930B2 Filter equalization using magnitude measurement data 有权
标题翻译：使用幅度测量数据滤波均衡
公开(公告)号：US07649930B2
公开(公告)日：2010-01-19
申请号：US11272285
申请日：2005-11-09
申请人： Yi He , Thomas C. Hill, III , Marcus K. Dasilva
发明人： Yi He , Thomas C. Hill, III , Marcus K. Dasilva
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L27/00
摘要： A filter equalization technique for an analog signal path, such as in an instrument that simultaneously measures a signal over a band of frequencies, uses magnitude measurement data for high frequency bands for which phase-calibrated sources are not readily available. A sinusoidal signal source together with an accurate power meter is used to provide a stepped frequency input over a desired frequency band to the analog signal path with an accurate measured magnitude. The output of the analog signal path is digitized and the resulting frequency magnitudes are computed. Then the resulting power meter results are deducted from the frequency magnitudes measured each time by the instrument to determine the magnitude response of the analog signal path. Using a Hilbert transform the corresponding phase response is determined based on a minimum phase assumption over the desired frequency band. From the magnitude and phase responses an inverse or digital equalization filter may be designed for the analog signal path.
摘要翻译：用于模拟信号路径的滤波器均衡技术，例如在同时测量频带上的信号的仪器中，使用相位校准源不容易获得的高频带的幅度测量数据。使用正弦信号源与精确的功率计一起，以精确的测量幅度向模拟信号路径提供期望频带上的阶跃频率输入。将模拟信号路径的输出数字化，并计算得到的频率幅度。然后，由仪器每次测量的频率幅度中扣除所得的功率计结果，以确定模拟信号路径的幅度响应。使用希尔伯特变换，基于期望频带上的最小相位假设来确定相应的相位响应。根据幅度和相位响应，可以为模拟信号路径设计反相或数字均衡滤波器。

2. 发明申请

US20110037643A1 Enhanced Impulse Response Measurement of an FM Radar Transmitter Pulse 有权
标题翻译： FM雷达发射机脉冲的增强脉冲响应测量
公开(公告)号：US20110037643A1
公开(公告)日：2011-02-17
申请号：US12570964
申请日：2009-09-30
申请人： Shigetsune Torin , Thomas C. Hill, III
发明人： Shigetsune Torin , Thomas C. Hill, III
IPC分类号： G01S7/40
CPC分类号： G01S13/282 , G01S7/285 , G01S7/4008
摘要： An enhanced impulse response measurement for a pulsed frequency modulation (FM) radar signal provides a more accurate measurement of the amplitude of a secondary response relative to the amplitude of a main response. The pulsed FM radar signal is sampled to produce a time-domain sample record. The sample record is windowed to produce a windowed sample record. The windowed sample record is transformed into a frequency-domain spectrum. The spectrum is multiplied with the complex conjugate of a frequency-domain estimate of a transmitted pulsed FM radar signal to produce a de-spreaded pulse. The de-spreaded pulse is transformed into the time domain to produce a measurement of the impulse response having a main response and a secondary response. The amplitude of the secondary response is corrected to eliminate errors caused by the windowing.
摘要翻译：用于脉冲调频（FM）雷达信号的增强的脉冲响应测量提供了相对于主响应的幅度的次级响应的幅度的更精确的测量。对脉冲FM雷达信号进行采样以产生时域采样记录。示例记录被窗口化以生成窗口化的样本记录。窗口样本记录被转换为频域谱。频谱与发射脉冲FM雷达信号的频域估计的复共轭相乘以产生解扩脉冲。解扩展后的脉冲被转换成时域以产生具有主响应和次响应的脉冲响应的测量。二次响应的幅度被校正以消除窗口引起的误差。

3. 发明授权

US08180586B2 Amplitude discrimination using the frequency mask trigger 有权
标题翻译：使用频率屏蔽触发的幅度辨别
公开(公告)号：US08180586B2
公开(公告)日：2012-05-15
申请号：US12369660
申请日：2009-02-11
申请人： Alfred K. Hillman, Jr. , Thomas C. Hill, III
发明人： Alfred K. Hillman, Jr. , Thomas C. Hill, III
IPC分类号： G06F19/00
CPC分类号： G01R13/0254 , G01R23/163
摘要： A frequency mask trigger having frequency selective amplitude discrimination capability is provided for triggering when selected frequency components of an input signal fail to reach a desired power level. A frame of digital data representing an input signal is transformed into a frequency spectrum having at least one frequency bin, each frequency bin having a power amplitude value. Each power amplitude value is compared to an upper lower reference power levels and a lower reference power level. A trigger signal is generated when the power amplitude value in any frequency bin is above the lower reference power level and below the upper reference power level for a specified time duration.
摘要翻译：提供具有频率选择性振幅识别能力的频率屏蔽触发器，用于当输入信号的选定频率分量不能达到期望的功率电平时进行触发。表示输入信号的数字数据的帧被变换成具有至少一个频率仓的频谱，每个频率仓具有功率振幅值。将每个功率振幅值与较低的参考功率电平和较低的参考功率电平进行比较。当任何频率仓中的功率振幅值高于较低的参考功率电平且低于上限参考功率电平达指定持续时间时，产生触发信号。

4. 发明授权

US08179305B2 Enhanced impulse response measurement of an FM radar transmitter pulse 有权
标题翻译： FM雷达发射机脉冲的增强脉冲响应测量
公开(公告)号：US08179305B2
公开(公告)日：2012-05-15
申请号：US12570964
申请日：2009-09-30
申请人： Shigetsune Torin , Thomas C. Hill, III
发明人： Shigetsune Torin , Thomas C. Hill, III
IPC分类号： G01S7/40
CPC分类号： G01S13/282 , G01S7/285 , G01S7/4008
摘要： An enhanced impulse response measurement for a pulsed frequency modulation (FM) radar signal provides a more accurate measurement of the amplitude of a secondary response relative to the amplitude of a main response. The pulsed FM radar signal is sampled to produce a time-domain sample record. The sample record is windowed to produce a windowed sample record. The windowed sample record is transformed into a frequency-domain spectrum. The spectrum is multiplied with the complex conjugate of a frequency-domain estimate of a transmitted pulsed FM radar signal to produce a de-spreaded pulse. The de-spreaded pulse is transformed into the time domain to produce a measurement of the impulse response having a main response and a secondary response. The amplitude of the secondary response is corrected to eliminate errors caused by the windowing.
摘要翻译：用于脉冲调频（FM）雷达信号的增强的脉冲响应测量提供了相对于主响应的幅度的次级响应的幅度的更精确的测量。对脉冲FM雷达信号进行采样以产生时域采样记录。示例记录被窗口化以生成窗口化的样本记录。窗口样本记录被转换为频域谱。频谱与发射脉冲FM雷达信号的频域估计的复共轭相乘以产生解扩脉冲。解扩展后的脉冲被转换成时域以产生具有主响应和次响应的脉冲响应的测量。二次响应的幅度被校正以消除窗口引起的误差。

5. 发明申请

US20100204938A1 AMPLITUDE DISCRIMINATION USING THE FREQUENCY MASK TRIGGER 有权
标题翻译：使用频率掩码触发信号的振幅辨别
公开(公告)号：US20100204938A1
公开(公告)日：2010-08-12
申请号：US12369660
申请日：2009-02-11
申请人： Alfred K. HILLMAN, JR. , Thomas C. Hill, III
发明人： Alfred K. HILLMAN, JR. , Thomas C. Hill, III
IPC分类号： G01R23/16
CPC分类号： G01R13/0254 , G01R23/163
摘要： A frequency mask trigger having frequency selective amplitude discrimination capability is provided for triggering when selected frequency components of an input signal fail to reach a desired power level. A frame of digital data representing an input signal is transformed into a frequency spectrum having at least one frequency bin, each frequency bin having a power amplitude value. Each power amplitude value is compared to an upper lower reference power levels and a lower reference power level. A trigger signal is generated when the power amplitude value in any frequency bin is above the lower reference power level and below the upper reference power level for a specified time duration.
摘要翻译：提供具有频率选择性振幅识别能力的频率屏蔽触发器，用于当输入信号的选定频率分量不能达到期望的功率电平时进行触发。表示输入信号的数字数据的帧被变换成具有至少一个频率仓的频谱，每个频率仓具有功率振幅值。将每个功率振幅值与较低的参考功率电平和较低的参考功率电平进行比较。当任何频率仓中的功率振幅值高于较低的参考功率电平且低于上限参考功率电平达指定持续时间时，产生触发信号。

6. 发明授权

US07474972B2 Bandwidth multiplication for a test and measurement instrument using non-periodic functions for mixing 有权
标题翻译：使用非周期性功能进行混合的测试和测量仪器的带宽倍增
公开(公告)号：US07474972B2
公开(公告)日：2009-01-06
申请号：US11690797
申请日：2007-03-23
申请人： John J. Pickerd , Kan Tan , Thomas C. Hill, III
发明人： John J. Pickerd , Kan Tan , Thomas C. Hill, III
IPC分类号： G01R23/00 , G01R19/00
CPC分类号： G01R13/0272
摘要： An acquisition apparatus for a test and measurement instrument including a splitter configured to split an input signal into a plurality of split signals, a plurality of oscillators, each oscillator configured to generate a periodic signal, a plurality of combiners, each combiner configured to combine an associated plurality of the periodic signals into an associated signal combination where at least one of the signal combinations is substantially non-periodic. The apparatus also includes a plurality of mixers, each mixer configured to mix an associated split signal and an associated signal combination into an associated mixed signal, a first digitizer configured to digitize an associated split signal, and a plurality of second digitizers, each second digitizer configured to digitize an associated mixed signal.
摘要翻译：一种用于测试和测量仪器的采集装置，包括分配器，其被配置为将输入信号分割为多个分离信号，多个振荡器，每个振荡器被配置为产生周期性信号，多个组合器，每个组合器被配置为组合相关联的多个周期信号转换成相关联的信号组合，其中信号组合中的至少一个基本上是非周期性的。所述设备还包括多个混频器，每个混频器被配置为将相关联的分离信号和相关联的信号组合混合成相关联的混合信号，配置为数字化相关联的分离信号的第一数字转换器和多个第二数字化仪，每个第二数字转换器配置为数字化相关的混合信号。

7. 发明授权

US4528516A Differential amplifier with dynamic thermal balancing 失效
标题翻译：具有动态热平衡的差分放大器
公开(公告)号：US4528516A
公开(公告)日：1985-07-09
申请号：US519472
申请日：1983-08-01
申请人： Thomas C. Hill, III
发明人： Thomas C. Hill, III
IPC分类号： H03F1/32 , H03F3/45 , H03G1/00 , H03G1/04 , H03G3/20
CPC分类号： H03F1/3211 , H03F3/45103 , H03G1/0023 , H03G1/04 , H03F2203/45302 , H03F2203/45494 , H03F2203/45498
摘要： A differential amplifier is provided with means to control the collector-to-emitter voltage thereof proportionately with quiescent current therethrough to dynamically maintain thermal balance therebetween when the gain setting is changed.
摘要翻译：差分放大器具有用于以增益设定改变之后以静态电流成比例地控制集电极 - 发射极电压以便动态地保持其间的热平衡的装置。

8. 发明授权

US4510461A Phase lock loop having switchable filters and oscillators 失效
标题翻译：锁相环具有可切换滤波器和振荡器
公开(公告)号：US4510461A
公开(公告)日：1985-04-09
申请号：US401051
申请日：1982-07-22
申请人： Eric J. Dickes , Thomas C. Hill, III , Robert T. Flegal
发明人： Eric J. Dickes , Thomas C. Hill, III , Robert T. Flegal
IPC分类号： H03L7/099 , H03L7/10
CPC分类号： H03L7/10 , H03L7/099 , Y10S331/02
摘要： A phase lock circuit including a phase/frequency detector, a plurality of selectable filters, and a plurality of variable frequency signal generators connected in a loop to lock an output signal to an input signal. An out-of-frequency-range condition detector is provided to facilitate automatic selection of an appropriate in-range combination of filter and signal generator to cause lock to occur.
摘要翻译：一种锁相电路，包括相位/频率检测器，多个可选滤波器以及以循环连接的多个可变频率信号发生器，以将输出信号锁定到输入信号。提供超频范围条件检测器以便于自动选择滤波器和信号发生器的合适的范围内组合以引起锁定。

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