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1. 发明授权

US07352827B2 Multichannel simultaneous real time spectrum analysis with offset frequency trigger 失效
标题翻译：具有偏移频率触发的多通道同时实时频谱分析
公开(公告)号：US07352827B2
公开(公告)日：2008-04-01
申请号：US10804672
申请日：2004-03-18
申请人： Jeffrey D. Earls , Alfred K. Hillman, Jr.
发明人： Jeffrey D. Earls , Alfred K. Hillman, Jr.
IPC分类号： H04L27/06
CPC分类号： G01R13/0254 , H04B1/28
摘要： An instrumentation receiver for multichannel simultaneously realtime spectrum analysis with frequency trigger offset inputs a wideband IF signal derived from a wideband RF signal by the receiver to both a wideband IF channel and a narrowband IF channel simultaneously. The wideband IF signal output from the wideband IF channel is sampled at a high sample rate with relatively low resolution to produce wideband signal data. The wideband IF signal input to the narrowband IF channel is frequency offset by a variable amount according to a region in the wideband IF signal where a frequency trigger event is expected and then narrowband filtered to produce a narrowband IF signal. The narrowband IF signal is sampled at a relatively low sample rate with high resolution to produce high dynamic range signal data for input to a frequency trigger function.
摘要翻译：用于具有频率触发偏移的多通道同时实时频谱分析的仪表接收器将由接收机的宽带RF信号的宽带IF信号同时输入到宽带IF信道和窄带IF信道。从宽带IF信道输出的宽带IF信号以相对较低分辨率的高采样率采样，以产生宽带信号数据。输入到窄带IF信道的宽带IF信号根据期望频率触发事件的宽带IF信号中的区域频移偏移量，然后进行窄带滤波以产生窄带IF信号。窄带IF信号以相对低的采样率以高分辨率采样，以产生用于输入到频率触发功能的高动态范围信号数据。

2. 发明授权

US09621286B2 Apparatus for generation of corrected vector wideband RF signals 有权
公开(公告)号：US09621286B2
公开(公告)日：2017-04-11
申请号：US13172541
申请日：2011-06-29
申请人： Jeffrey D. Earls
发明人： Jeffrey D. Earls
IPC分类号： H04B1/04 , H04B17/00 , H04L27/36 , H04B17/11
CPC分类号： H04B17/0085 , H04B17/11
摘要： A signal generation system can include an input source configured to provide an input radio frequency (RF) signal, a correction filter calculation (CFC) block configured to determine correction filter parameters, and an automatic level control (ALC) loop configured to provide ALC loop information to the CFC block. The correction filter parameters may be determined based at least in part on the ALC information. The system can also include a predistortion field programmable gate array (FPGA) configured to apply a correction filter to the input RF signal, wherein the correction filter is based at least in part on the correction filter parameters, and an RF output configured to provide an RF output signal.

3. 发明申请

US20130003889A1 APPARATUS FOR GENERATION OF CORRECTED VECTOR WIDEBAND RF SIGNALS 有权
标题翻译：用于生成校正矢量宽带射频信号的装置
公开(公告)号：US20130003889A1
公开(公告)日：2013-01-03
申请号：US13172541
申请日：2011-06-29
申请人： Jeffrey D. Earls
发明人： Jeffrey D. Earls
IPC分类号： H04L25/49
CPC分类号： H04B17/0085 , H04B17/11
摘要： A signal generation system can include an input source configured to provide an input radio frequency (RF) signal, a correction filter calculation (CFC) block configured to determine correction filter parameters, and an automatic level control (ALC) loop configured to provide ALC loop information to the CFC block. The correction filter parameters may be determined based at least in part on the ALC information. The system can also include a predistortion field programmable gate array (FPGA) configured to apply a correction filter to the input RF signal, wherein the correction filter is based at least in part on the correction filter parameters, and an RF output configured to provide an RF output signal.
摘要翻译：信号发生系统可以包括被配置为提供输入射频（RF）信号的输入源，被配置为确定校正滤波器参数的校正滤波器计算（CFC）块）和被配置为提供ALC回路的自动电平控制（ALC）信息到CFC块。可以至少部分地基于ALC信息来确定校正滤波器参数。该系统还可以包括被配置为向输入RF信号施加校正滤波器的预失真现场可编程门阵列（FPGA），其中校正滤波器至少部分地基于校正滤波器参数，以及RF输出，其被配置为提供射频输出信号。

4. 发明授权

US06785527B2 Conversion spur avoidance in a multi-conversion radio frequency receiver 失效
标题翻译：多转换射频接收机中的转换支路避免
公开(公告)号：US06785527B2
公开(公告)日：2004-08-31
申请号：US09825308
申请日：2001-04-02
申请人： Jeffrey D. Earls
发明人： Jeffrey D. Earls
IPC分类号： H04B126
CPC分类号： H03D7/161
摘要： A method of avoiding conversion spurs in a multi-conversion radio frequency receiver having a first local oscillator, an intermediate frequency filter and a second local oscillator in series generates, based on a center frequency for the intermediate frequency filter, a table of problem frequencies of the first local oscillator relative to a frequency of the second local oscillator which produce harmonic mixing products within the bandwidth of the intermediate frequency filter versus corresponding frequency offsets for the second local oscillator which retune the frequency of the second local oscillator so the harmonic mixing products are moved outside the bandwidth of the intermediate frequency filter. In operation when in analyzing an input radio frequency signal the frequency of the first local oscillator equals one of the problem frequencies in the table, the frequency of the second local oscillator is retuned by the corresponding frequency offset from the table, thus moving the harmonic mixing products of the two local oscillators outside the bandwidth of the intermediate frequency filter so they don't affect the analysis of the input radio frequency signal.
摘要翻译：一种在具有第一本地振荡器，中频滤波器和第二本地振荡器的多转换射频接收机中避免转换杂散的方法基于中频滤波器的中心频率产生一个问题频率表所述第一本地振荡器相对于所述第二本地振荡器的频率产生，所述频率在所述中频滤波器的带宽内产生与所述第二本地振荡器的频率相对应的频率偏移的谐波混合产物，所述第二本地振荡器重新调谐所述第二本机振荡器的频率，移动到中频滤波器的带宽之外。在分析输入射频信号时，在第一本地振荡器的频率等于表中的问题频率之一的操作中，第二本地振荡器的频率被从表中相应的频率偏移重新转移，从而移动谐波混合两个本地振荡器的产品在中频滤波器的带宽之外，因此它们不影响输入射频信号的分析。

5. 发明授权

US06307896B1 Instrumentation receiver for digitally modulated radio frequency signals 失效
标题翻译：用于数字调制射频信号的仪表接收器
公开(公告)号：US06307896B1
公开(公告)日：2001-10-23
申请号：US09054976
申请日：1998-04-03
申请人： Linley F. Gumm , Jeffrey D. Earls
发明人： Linley F. Gumm , Jeffrey D. Earls
IPC分类号： H03K900
CPC分类号： H04B1/30 , H04B1/302 , H04N5/4401 , H04N5/455 , H04N17/004
摘要： An instrumentation receiver suitable for receiving a digitally modulated radio frequency input signal having a pilot signal at the RF frequency and symbol data generated at a symbol frequency generates a digitally modulated intermediate frequency signal having the pilot signal at the intermediate frequency equal to an integer multiple of the digital data's symbol frequency where the integer multiple is equal to or greater than one. A reference signal having a frequency equal to an integer multiple of the symbol frequency where the integer multiple is equal to or greater than one mixes with the IF signal to generate a control signal for controlling a local oscillator that generates a local oscillator signal for mixing with the digitally modulated RF input signal for locking the pilot signal to the reference signal. The instrumentation receiver is usable in a measurement test set for characterizing and monitoring an 8-VSB digital television transmitter or other digitally moduated RF signal containing a pilot at the carrier frequency.
摘要翻译：适用于接收具有RF频率的导频信号和以符号频率生成的符号数据的数字调制射频输入信号的仪表接收器产生数字调制的中频信号，该中频频率信号的中频频率等于数字数据的符号频率，其中整数倍等于或大于1。具有等于整数倍等于或大于1的符号频率的整数倍的参考信号与IF信号混合以产生用于控制本地振荡器的控制信号，该本地振荡器产生用于与用于将导频信号锁定到参考信号的经数字调制的RF输入信号。仪器接收器可用于测量测试装置，用于表征和监测8-VSB数字电视发射机或其他包含载波频率的导频的数字调制RF信号。

6. 发明授权

US07873486B2 Spectrogram mask trigger 有权
标题翻译：光谱图掩码触发
公开(公告)号：US07873486B2
公开(公告)日：2011-01-18
申请号：US10903418
申请日：2004-07-29
申请人： Jeffrey D. Earls
发明人： Jeffrey D. Earls
IPC分类号： G01R23/16
CPC分类号： G01R13/0254 , G01R23/16
摘要： A spectrogram mask trigger is generated in response to multiple or complex frequency events within a signal being monitored. A sequence of frequency masks over a period of time is generated according to a frequency trajectory, frequency hops or other complex frequency events expected in the signal to form a spectrogram mask. The spectrogram mask is then applied to multiple spectra or spectrogram of the signal to determine whether an anomalous frequency event has occurred within the time period or to identify a particular frequency pattern within the signal. Depending upon the results of the spectrogram mask application, the spectrogram mask trigger is generated for storing a block of data from the signal surrounding the triggering event for further analysis.
摘要翻译：响应于正在监视的信号内的多个或复杂频率事件产生频谱图掩模触发。根据信号中期望的频率轨迹，跳频或其他复频率事件来生成一段时间的频率掩模序列，以形成谱图掩模。然后将光谱图掩模应用于信号的多个光谱或光谱图，以确定在该时间段内是否发生异常频率事件，或者识别信号内的特定频率模式。根据光谱图掩模应用的结果，产生光谱图掩模触发，用于存储来自围绕触发事件的信号的数据块用于进一步分析。

7. 发明授权

US07702305B2 Use of a preselection filter bank and switched local oscillator counter in an instrumentation receiver 有权
标题翻译：在仪器接收器中使用预选滤波器组和开关本地振荡器计数器
公开(公告)号：US07702305B2
公开(公告)日：2010-04-20
申请号：US11674648
申请日：2007-02-13
申请人： Jeffrey D. Earls
发明人： Jeffrey D. Earls
IPC分类号： H04B1/18
CPC分类号： H03J5/244 , H04B1/005
摘要： An instrumentation receiver architecture for processing an RF signal has a dual-IF channel architecture, a low-band IF channel and a high-band IF channel, and a tunable oscillator, such as a yttrium-iron-garnet (YIG) tunable oscillator (YTO), a voltage controlled oscillator (VCO), a bank of VCOs and the like, providing a different mixing frequency range to each channel, generally a higher frequency range to the high-band IF channel than to the low-band IF channel. At the input to the high-band IF channel is a bank of preselection filters for selecting a frequency band from the RF signal for processing by the high-band IF channel. A switch selects the output from one of the low-band and high-band IF channels for further processing.
摘要翻译：用于处理RF信号的仪表接收机架构具有双IF通道架构，低频IF通道和高频IF通道，以及可调谐振荡器，例如钇 - 铁 - 石榴石（YIG）可调振荡器（YIG） YTO），压控振荡器（VCO），一组VCO等，为每个信道提供不同的混频频率范围，通常比高频IF信道高频带IF频道的频率范围更高。在高频IF信道的输入端是一组预选滤波器，用于从RF信号中选择一个频带，用于由高频带IF信道进行处理。一个开关选择一个低频和高频IF通道的输出进行进一步处理。

8. 发明授权

US08872569B2 Automatic quadrature network with phase and amplitude detection 有权
标题翻译：具有相位和幅度检测的自动正交网络
公开(公告)号：US08872569B2
公开(公告)日：2014-10-28
申请号：US13681278
申请日：2012-11-19
申请人： Kelly F. Garrison , Raymond L. Veith , Gordon A. Olsen , Jeffrey D. Earls
发明人： Kelly F. Garrison , Raymond L. Veith , Gordon A. Olsen , Jeffrey D. Earls
IPC分类号： H03H11/16 , H03H11/20 , H03H11/22
CPC分类号： H03H11/20 , H03H11/22
摘要： An automatic quadrature network with amplitude and phase detection produces quadrature signals for an input oscillator signal, the quadrature signals being equal in amplitude and having ideal quadrature phase between them. An RC circuit provides one quadrature path, and a CR circuit provides another quadrature path. The outputs from the RC/CR circuits are amplitude detected to produce an amplitude control signal. The outputs also are amplitude limited, and the phase between the limiter outputs is detected to produce a phase control signal. The amplitude and phase control signals are combined to generate respective control signals for the RC/CR circuits to automatically align them so that the quadrature signals are of equal amplitude and ideal quadrature phase.
摘要翻译：具有幅度和相位检测的自动正交网络产生用于输入振荡器信号的正交信号，正交信号幅度相等并且在它们之间具有理想的正交相位。 RC电路提供一个正交路径，CR电路提供另一个正交路径。来自RC / CR电路的输出被振幅检测以产生幅度控制信号。输出也被限幅，并且检测限幅器输出之间的相位以产生相位控制信号。振幅和相位控制信号被组合以产生用于RC / CR电路的相应控制信号以自动对准它们，使得正交信号具有相等幅度和理想的正交相位。

9. 发明授权

US07327992B2 Tracking generator with internal vector modulation source 有权
标题翻译：具有内部矢量调制源的跟踪发生器
公开(公告)号：US07327992B2
公开(公告)日：2008-02-05
申请号：US10692404
申请日：2003-10-22
申请人： Jeffrey D. Earls , Donald J. Dalebroux
发明人： Jeffrey D. Earls , Donald J. Dalebroux
IPC分类号： H03J7/32 , H04B1/18 , H04B1/16
CPC分类号： G01R27/32
摘要： A tracking generator for an RF measurement instrument having a receiver and a controller includes a vector modulator internal to the tracking generator. The internal vector modulator modulates complex baseband signals based on data from the controller to produce a vector modulation signal. The vector modulation signal is used to modulate a local oscillator frequency from the receiver in an output mixing stage to produce a test signal having an output frequency that matches a measurement frequency to which the receiver is tuned. By controlling the complex baseband data from the controller, an adaptive filter at the output of a DAC that produces an analog signal from the digitally modulated complex baseband data, an internal independent oscillator for the vector modulator, or a large offset phase-locked loop, an offset from the measurement frequency may be generated for the output frequency.
摘要翻译：用于具有接收器和控制器的RF测量仪器的跟踪发生器包括跟踪发生器内部的矢量调制器。内部矢量调制器基于来自控制器的数据来调制复基带信号以产生矢量调制信号。矢量调制信号用于在输出混频级中从接收器调制本地振荡器频率，以产生具有与接收机调谐到的测量频率匹配的输出频率的测试信号。通过控制来自控制器的复合基带数据，在DAC的输出处产生来自数字调制的复基带数据的模拟信号，矢量调制器的内部独立振荡器或大的偏移锁相环的自适应滤波器，对于输出频率可能产生与测量频率的偏移。

10. 发明授权

US06532358B1 Overload distortion protection for a wideband receiver 失效
标题翻译：宽带接收机的过载失真保护
公开(公告)号：US06532358B1
公开(公告)日：2003-03-11
申请号：US09631753
申请日：2000-08-03
申请人： Jeffrey D. Earls , Donald J. Dalebroux , Man-Kit Yau
发明人： Jeffrey D. Earls , Donald J. Dalebroux , Man-Kit Yau
IPC分类号： H04B106
CPC分类号： H03G3/3068 , H04B1/109
摘要： Overload distortion protection for a wideband receiver having a wideband variable gain input amplifier followed by a frequency conversion stage followed in turn by an intermediate frequency amplifier and detector to produce a measurement value in response to a signal input to the wideband variable gain input amplifier is achieved by detecting the peak power of the signal at the output of the wideband variable gain input amplifier and comparing it with the power output from the intermediate frequency amplifier and detector. If a threshold difference is exceeded, gain control signals for the wideband variable gain input and intermediate frequency amplifiers are adjusted for optimum dynamic range. If there is no range for adjusting the gain control signals, then a warning is provided to an operator to alert that the measurement value may contain distortion.
摘要翻译：实现具有宽带可变增益输入放大器的宽带接收机的过载失真保护，随后是频率转换级，随后由中频放大器和检测器响应于输入到宽带可变增益输入放大器的信号产生测量值通过检测宽带可变增益输入放大器的输出处的信号的峰值功率，并将其与来自中频放大器和检测器的功率输出进行比较。如果超过阈值差，则调整宽带可变增益输入和中频放大器的增益控制信号以获得最佳动态范围。如果没有用于调整增益控制信号的范围，则向操作者提供警告以警告测量值可能包含失真。

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