公开(公告)号：US07386409B2

公开(公告)日：2008-06-10

申请号：US11280493

申请日：2005-11-16

申请人： James Mueller ,  Peter J. Pupalaikis

发明人： James Mueller ,  Peter J. Pupalaikis

IPC分类号： G01R35/00 ,  H04B15/00

CPC分类号： G01R23/167 ,  G01R13/029 ,  G01R23/163

摘要： An artifact signal correction system may include a mixing component to generate a waveform corresponding to an artifact such as an error tone, whereupon that waveform may be combined with the input waveform to substantially eliminate the artifact. In preferred embodiments, a method and apparatus for reducing spurious tones in systems of mismatched interleaved digitizers due to interleave error is provided. In various embodiments the method may include reversing the frequency content of an input signal, converting the reversed signal into interleave artifact content, delaying the input signal along a parallel path, and then subtracting the interleave content from the delayed input signal.

摘要翻译： 伪像信号校正系统可以包括混合分量，以产生对应于诸如误差音调的伪像的波形，因此该波形可以与输入波形组合以基本上消除伪影。 在优选实施例中，提供了一种用于减少由于交织错误而导致的错配交错数字化仪系统中的伪噪声的方法和装置。 在各种实施例中，该方法可以包括反转输入信号的频率内容，将反转信号转换成交错伪像内容，沿着并行路径延迟输入信号，然后从延迟的输入信号中减去交织内容。

公开(公告)号：US20060195301A1

公开(公告)日：2006-08-31

申请号：US11280493

申请日：2005-11-16

申请人： James Mueller ,  Peter Pupalaikis

发明人： James Mueller ,  Peter Pupalaikis

IPC分类号： G06F15/00

CPC分类号： G01R23/167 ,  G01R13/029 ,  G01R23/163

摘要： An artifact signal correction system may include a mixing component to generate a waveform corresponding to an artifact such as an error tone, whereupon that waveform may be combined with the input waveform to substantially eliminate the artifact. In preferred embodiments, a method and apparatus for reducing spurious tones in systems of mismatched interleaved digitizers due to interleave error is provided. In various embodiments the method may comprise reversing the frequency content of an input signal, converting the reversed signal into interleave artifact content, delaying the input signal along a parallel path, and then subtracting the interleave content from the delayed input signal.

摘要翻译： 伪像信号校正系统可以包括混合分量，以产生对应于诸如误差音调的伪像的波形，因此该波形可以与输入波形组合以基本上消除伪影。 在优选实施例中，提供了一种用于减少由于交织错误而导致的错配交错数字化仪系统中的伪噪声的方法和装置。 在各种实施例中，该方法可以包括反转输入信号的频率内容，将反转的信号转换为交错伪像内容，沿着并行路径延迟输入信号，然后从延迟输入信号中减去交织内容。

公开(公告)号：US06728655B2

公开(公告)日：2004-04-27

申请号：US09944992

申请日：2001-08-31

申请人： Donald Wilson Stark

发明人： Donald Wilson Stark

IPC分类号： G06F1900

CPC分类号： G01R13/029 ,  G01R23/163 ,  G06F19/00 ,  G16H40/63

摘要： An electronic instrument includes instrument hardware, core software, and the ability to support custom data processing libraries, separate from the core software. The instrument hardware acquires unprocessed measured data. The core software includes standard measurement objects and standard algorithms. The standard measurement objects produce analysis results of the unprocessed measured data. The standard algorithms are used by the standard measurement objects to aid in production of analysis results of the unprocessed measured data. Custom libraries as supported by the core software include custom measurement objects and custom algorithms. The custom measurement objects produce analysis results of the unprocessed measured data. The custom algorithms are used by the custom measurement objects to aid in production of analysis results of the unprocessed measured data. The custom measurement objects also are capable of using the standard algorithms to aid in production of analysis results of the unprocessed measured data.

摘要翻译： 电子仪器包括仪器硬件，核心软件，以及支持与核心软件分离的自定义数据处理库的能力。 仪器硬件获取未处理的测量数据。 核心软件包括标准测量对象和标准算法。 标准测量对象产生未处理测量数据的分析结果。 标准算法由标准测量对象使用，以帮助生成未处理测量数据的分析结果。 核心软件支持的自定义库包括自定义测量对象和自定义算法。 自定义测量对象产生未处理测量数据的分析结果。 定制算法由自定义测量对象使用，以帮助生成未处理测量数据的分析结果。 自定义测量对象还能够使用标准算法来帮助生成未处理的测量数据的分析结果。

公开(公告)号：US6157183A

公开(公告)日：2000-12-05

申请号：US447603

申请日：1999-11-23

申请人： Donald A. Bradley

发明人： Donald A. Bradley

IPC分类号： G01R23/163 ,  G01R23/173 ,  G01R25/00 ,  G01R27/06 ,  G01R27/28 ,  G01R27/32 ,  G01R29/10 ,  H03L7/18 ,  G01R23/165

CPC分类号： G01R23/163 ,  G01R27/06 ,  G01R27/28 ,  G01R27/32 ,  G01R25/00 ,  G01R29/10

摘要： A two port handheld VNA enabling both reflection and transmission measurements to be made over a range of 25 MHz to 3.3 GHz frequency range. The handheld VNA includes a tracking synthesizer which generates a LO signal without a direct connection to a reference oscillator, enabling resolution of the LO signal to be independent of a generated RF test signal. Synchronous detectors are further included to provide incident, reflected, and transmitted IF signals to an A/D converter. To enable operation in the presence of external signals, a feedback dither line is provided from one of the synchronous detector outputs to sweep the frequency of the reference oscillator. The handheld VNA also is configured to optionally operate as a frequency monitor to determine the frequency range and power level of incoming signals without upconverting and downconverting to eliminate images as typically done in a spectrum analyzer. The frequency monitoring circuit operates by dividing the frequency range to be monitored into bins. The LO signal is then stepped for each bin until RF signals within the bin frequency range can generate an IF signal. The maximum IF signal power level detected during measurements for the bin is then stored as a power level for signals in each bin.

摘要翻译： 一个双端口手持式VNA，可在25 MHz至3.3 GHz频率范围内进行反射和透射测量。 手持式VNA包括跟踪合成器，其产生LO信号而不直接连接到参考振荡器，使得LO信号的分辨率能够独立于所产生的RF测试信号。 还包括同步检测器，以向A / D转换器提供入射，反射和发射的IF信号。 为了在存在外部信号的情况下使能操作，从同步检测器输出之一提供反馈抖动线，以扫描参考振荡器的频率。 手持式VNA还被配置为可选地作为频率监视器操作以确定输入信号的频率范围和功率电平，而无需上变频和下变频，以消除通常在频谱分析仪中进行的图像。 频率监视电路通过将要监视的频率范围除以箱体来进行操作。 然后，LO信号对于每个仓进行步进，直到箱体频率范围内的RF信号可以产生IF信号。 然后，对于箱的测量期间检测到的最大IF信号功率电平被存储为每个仓中的信号的功率电平。

公开(公告)号：US5579463A

公开(公告)日：1996-11-26

申请号：US385554

申请日：1995-02-08

申请人： Mitsuyoshi Takano ,  Aiichi Katayama

发明人： Mitsuyoshi Takano ,  Aiichi Katayama

IPC分类号： G01R13/34 ,  G01R23/16 ,  G01R23/163 ,  G01R23/173 ,  G01R27/32 ,  G06T3/00

CPC分类号： G01R13/345 ,  G01R23/16 ,  G01R23/163 ,  G01R23/173 ,  G01R27/32

摘要： A measurement unit U100 measures an input signal to be measured by sweeping frequencies in a measurement range having a predetermined frequency band so as to obtain waveform data to be developed on the frequency axis such as spectrum data in, e.g., a spectrum analyzer. The waveform data obtained by the measurement of the measurement unit U100 is displayed by a display device 500 via a display data processor U20 included in a control unit U200 to be developed on the frequency axis of the display device, i.e., in correspondence with the measurement frequencies. The control unit U200 includes a measurement controller U30 for controlling the measurement unit U100 so as to display waveform data obtained by enlarging or reducing waveform data, before a measurement frequency condition is changed, at a predetermined magnification to have a predetermined point on the frequency axis as the center on the basis of a change in measurement frequency condition set by a condition setting unit U900, and an enlargement display/stable display processor U40 for controlling the display data processor U20. The enlargement display/stable display processor U40 realizes high-definition waveform observation, and has a function of controlling the display device U500 as the control unit U200.

摘要翻译： 测量单元U100通过在具有预定频带的测量范围内的频率扫描来测量要测量的输入信号，以获得在频率轴上显影的波形数据，例如频谱分析仪中的频谱数据。 通过测量单元U100的测量获得的波形数据由显示设备500经由包括在控制单元U200中的显示数据处理器U20显示，以在显示设备的频率轴上开发，即与测量对应 频率 控制单元U200包括用于控制测量单元U100的测量控制器U30，以便以预定的倍率显示在测量频率条件改变之前通过放大或缩小波形数据而获得的波形数据，以在频率轴上具有预定点 作为基于由条件设置单元U900设置的测量频率条件的改变的中心，以及用于控制显示数据处理器U20的放大显示/稳定显示处理器U40。 放大显示/稳定显示处理器U40实现高清晰度波形观察，并且具有控制显示装置U500作为控制单元U200的功能。

公开(公告)号：US5068597A

公开(公告)日：1991-11-26

申请号：US428809

申请日：1989-10-30

申请人： Seth D. Silverstein ,  Joseph M. Pimbley

发明人： Seth D. Silverstein ,  Joseph M. Pimbley

IPC分类号： G01R23/163 ,  G01S13/90

CPC分类号： G01S13/9035 ,  G01R23/163

摘要： A method for rapidly estimating power spectral density components .rho.(f) in the spectrum of an input signal, by first digitizing the input signal over a selected time interval at a selected sample rate; computing an m-th order prediction error energy as an arithmetic mean of forward and backward prediction error energies; and then computing an m-th order prediction error power from a previous reflection coefficient .GAMMA. computation. A control parameter .alpha. is generated; using .alpha. and .GAMMA., an m-th order entropy H and free energy F are then computed, from which is computed m-th order reflection coefficients as extremes of the m-th order Free energy. If the proper extremes are not found, new feedback for the (m+1)-st order solution is generated. If the proper extremes are found, the spectral components are computed and recorded.

摘要翻译： 一种用于通过在选定的时间间隔以选定的采样速率对输入信号进行第一数字化来快速估计输入信号的频谱中的功率谱密度分量rho（f）的方法; 计算m阶预测误差能量作为前向和后向预测误差能量的算术平均值; 然后从先前的反射系数GAMMA计算计算m阶预测误差功率。 生成控制参数α; 使用α和GAMMA，然后计算m阶熵H和自由能F，从其计算出m阶反射系数作为第m阶自由能的极值。 如果没有找到适当的极值，则会生成（m + 1）阶的解决方案的新反馈。 如果找到适当的极值，则计算和记录光谱分量。

公开(公告)号：US4818949A

公开(公告)日：1989-04-04

申请号：US142114

申请日：1988-01-06

申请人： Jonathan D. Cohen

发明人： Jonathan D. Cohen

IPC分类号： G01R23/163 ,  G01R23/16

CPC分类号： G01R23/163

摘要： An apparatus is described which performs real time spectrum analysis of large bandwidth radio frequency signals. The apparatus allows the simultaneous monitoring of all frequencies within the band of interest, and operates in the presence of multiple frequencies.

摘要翻译： 描述了对大带宽射频信号进行实时频谱分析的装置。 该装置允许同时监视感兴趣的频带内的所有频率，并且在存在多个频率的情况下操作。

公开(公告)号：US4783640A

公开(公告)日：1988-11-08

申请号：US138541

申请日：1987-12-28

申请人： Samuel C. Reynolds ,  Donald C. D. Chang

发明人： Samuel C. Reynolds ,  Donald C. D. Chang

IPC分类号： G01R29/00 ,  G01R23/163 ,  G01R23/175 ,  H01P5/16 ,  H01P9/00 ,  H01P5/12

CPC分类号： H01P5/16 ,  G01R23/163 ,  G01R23/175

摘要： A correlator apparatus that simultaneously delays two time-varying input signals using just a single transmission line, with the signals being connected to opposite ends of the line. Directional couplers spaced along the transmission line extract delayed versions of the two input signals, for correlation by a bank of correlators, to produce a correlation envelope for the two signals. The apparatus is substantially less massive than prior apparatus of this kind and can be easily constructed and aligned.

公开(公告)号：US4162500A

公开(公告)日：1979-07-24

申请号：US891256

申请日：1978-03-29

申请人： John H. Jacobi ,  Lawrence E. Larsen

发明人： John H. Jacobi ,  Lawrence E. Larsen

IPC分类号： A61B5/00 ,  A61B5/05 ,  G01N22/00 ,  G01R23/163 ,  G01R27/04 ,  G01R27/28 ,  H01Q13/06

CPC分类号： A61B5/0507 ,  A61B5/0002 ,  A61B5/05 ,  G01N22/00 ,  G01R23/163 ,  G01R27/04 ,  G01R27/28 ,  H01Q13/06

摘要： A system for remote microwave interrogation and imaging of biological tars comprises at least one microwave, double ridged waveguide antenna probe which operates at S-band frequencies, and a high dielectric liquid medium, preferably water, in which both the probe and the target are completely immersed. For imaging applications, the probe is positioned with respect to the target such that the target is in the near field of the antenna.

摘要翻译： 用于远程微波询问和生物目标成像的系统包括至少一个以S波段频率工作的微波，双脊波导天线探针和高介电液体介质，优选水，其中探针和目标完全相同 沉浸在 对于成像应用，探针相对于目标定位，使得目标在天线的近场中。

公开(公告)号：US4135131A

公开(公告)日：1979-01-16

申请号：US842137

申请日：1977-10-14

申请人： Lawrence E. Larsen ,  John H. Jacobi

发明人： Lawrence E. Larsen ,  John H. Jacobi

IPC分类号： A61B5/00 ,  A61B5/05 ,  G01N24/00 ,  G01R23/163 ,  G01R27/04 ,  G01R27/28

CPC分类号： A61B5/0507 ,  A61B5/0002 ,  A61B5/05 ,  G01N24/008 ,  G01R23/163 ,  G01R27/04 ,  G01R27/28

摘要： Remote interrogation of biological targets is accomplished in accordance h the present invention by method and apparatus wherein a microwave signal is generated which varies in frequency from a first frequency to a second frequency in a predetermined time period. The signal is divided into two signals, one of which is propagated through a test channel comprising a transmitting antenna for transmitting the signal through the target, and a receiving antenna for receiving the signal transmitted through the target, and the other of which is propagated through a reference channel providing a fixed time delay of propagation. The propagated signals are detected and mixed to produce a time delay spectrum wherein the frequency of each spectral line represents the instantaneous difference in the frequencies of the detected signals.

摘要翻译： 根据本发明，通过方法和装置实现生物靶标的远程询问，其中在预定时间段内产生频率从第一频率变化到第二频率的微波信号。 信号被分成两个信号，其中一个信号通过包括用于通过目标发送信号的发射天线的测试信道传播，以及接收天线，用于接收通过目标传输的信号，另一个传播通过 提供传播的固定时间延迟的参考信道。 传播的信号被检测和混合以产生时间延迟谱，其中每个谱线的频率表示检测信号的频率的瞬时差。