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公开(公告)号：US06229316B1
公开(公告)日：2001-05-08
申请号：US08707032
申请日：1996-09-03
申请人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
发明人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
IPC分类号： G01R2316
摘要： A spectrum analyzer in which automatic setting of parameters such as band width is done by the analyzer without manual operator input and noise measurements are determined and displayed to the operator. This is accomplished by an input signal being supplied to a frequency mixer via an input variable attenuator. The frequency of the input signal is mixed with the frequency of a local signal from a frequency sweep generator. The mixed signal is then supplied to a band pass filter and the output of the filter is amplified by an amplifier. The frequency of the amplified output is mixed with the frequency of a local signal from a local oscillator by a frequency mixer. The intermediate frequency signal is taken out by a band pass filter and the output is detected by a detector. The detected output is converted into a digital signal by an A/D converter after passing through a low pass filter and the digital signal is stored in a buffer memory. A CPU sets an attenuation amount. The CPU also controls a frequency sweep generator by controlling a ramp voltage generator through a timing controller. The CPU sets a sweep frequency band, a band width RBW, a band width VBW, and a sampling period, as well as a display control of the data stored in the buffer memory on a display unit.
摘要翻译： 频谱分析仪，其中通过分析仪完成诸如带宽等参数的自动设置，无需手动操作员输入和噪声测量，并将其显示给操作者。 这通过经由输入可变衰减器被提供给混频器的输入信号来实现。 输入信号的频率与来自频率扫描发生器的本地信号的频率混合。 然后将混合信号提供给带通滤波器，并且滤波器的输出由放大器放大。 放大输出的频率通过混频器与来自本地振荡器的本地信号的频率混合。 中频信号由带通滤波器取出，输出由检测器检测。 在通过低通滤波器之后，A / D转换器将检测到的输出转换成数字信号，数字信号存储在缓冲存储器中。 CPU设置衰减量。 CPU还通过定时控制器控制斜坡电压发生器来控制频率扫描发生器。 CPU设置扫描频带，带宽RBW，带宽VBW和采样周期，以及在显示单元上存储在缓冲存储器中的数据的显示控制。
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公开(公告)号：US06191571B1
公开(公告)日：2001-02-20
申请号：US09248110
申请日：1999-02-11
申请人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
发明人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
IPC分类号： G01R1320
摘要： A measuring device and method use a spectrum analyzer. The spectrum analyzer comprises a display screen controlled by a processor on which a spectrum of an input signal is displayed in a frequency region on a half portion of the display screen and a noise level at a frequency associated with the input signal is displayed in a time region on another half portion of the display screen.
摘要翻译： 测量装置和方法使用频谱分析仪。 频谱分析仪包括由处理器控制的显示屏幕，在该处理器上，在显示屏幕的一半部分上的频率区域中显示输入信号的频谱，并且在一段时间内显示与输入信号相关联的频率处的噪声电平 区域在显示屏幕的另一半部分上。
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公开(公告)号：US5818215A
公开(公告)日：1998-10-06
申请号：US634429
申请日：1996-04-18
申请人： Yoshiaki Miyamae , Hiroaki Takaoku , Osamu Aoyama
发明人： Yoshiaki Miyamae , Hiroaki Takaoku , Osamu Aoyama
IPC分类号： G01R23/173 , G01R13/24
CPC分类号： G01R23/173
摘要： A spectrum analyzer converts frequencies of an input signal using a local signal from a local signal generator, detects the frequency converted outputs, and sweeps the frequencies of said local signal generated by said local signal generator, to obtain a frequency-based output, wherein said local signal generator comprises a digital direct synthesizer for incrementing the output frequency for every input clock, a variable frequency oscillator for outputting an oscillation output as said local signal and a phase locked loop for controlling the oscillation frequency of said variable frequency oscillator using the output of said digital direct synthesizer as a reference signal.
摘要翻译： 频谱分析器使用来自本地信号发生器的本地信号来转换输入信号的频率，检测变频输出，并扫描由所述本地信号发生器产生的所述本地信号的频率，以获得基于频率的输出，其中所述 本地信号发生器包括用于递增每个输入时钟的输出频率的数字直接合成器，用于输出振荡输出作为所述本地信号的可变频率振荡器和用于使用所述输出的输出控制所述可变频率振荡器的振荡频率的锁相环 所述数字直接合成器作为参考信号。
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公开(公告)号：US5847559A
公开(公告)日：1998-12-08
申请号：US704622
申请日：1996-12-23
申请人： Hiroaki Takaoku , Takayoshi Fukui
发明人： Hiroaki Takaoku , Takayoshi Fukui
IPC分类号： G01R23/173 , H03L7/18 , G01R27/26
CPC分类号： H03L7/1806 , G01R23/173
摘要： An improved local oscillator for use in a digital step sweep is capable of minimizing dynamic spurious which is an inverse of the unit step time T.sub.step. The local oscillator includes a random clock delay 12 which provides a random clock 12.sub.rndclk to the DDS 40 to modify a time length of the unit step time T.sub.step for sweeping the local oscillator to be random.
摘要翻译： PCT No.PCT / JP96 / 00115 Sec。 371日期：1996年12月23日 102（e）日期1996年12月23日PCT提交1996年1月23日PCT公布。 公开号WO96 / 23231 日期1996年8月1日用于数字步进扫描的改进的本地振荡器能够最小化动态寄生，这是单位步进时间Tstep的倒数。 本地振荡器包括随机时钟延迟12，其向DDS 40提供随机时钟12rndclk，以修改用于将本地振荡器扫描为随机的单位步进时间Tstep的时间长度。
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公开(公告)号：US06233288B1
公开(公告)日：2001-05-15
申请号：US09070094
申请日：1998-04-03
申请人： Hiroaki Takaoku , Takayoshi Fukui
发明人： Hiroaki Takaoku , Takayoshi Fukui
IPC分类号： H04L2706
CPC分类号： G01R23/173
摘要： A spectrum analyzer having an improved local oscillator for use in a digital step sweep is capable of minimizing a dynamic spurious response which is inverse proportional to a unit step time in the step sweep. The local oscillator includes a random clock delay which provides a random clock to a direct digital synthesizer to incorporate random timings in a time length of the unit step time for sweeping the local oscillator. In another aspect, the local oscillator includes a sweep step number control which maximizes the number of steps in the step sweep to ultimately decrease the dynamic spurious response.
摘要翻译： 具有用于数字步进扫描的改进的本地振荡器的频谱分析仪能够使与步进扫描中的单位步进时间成反比的动态杂散响应最小化。 本地振荡器包括随机时钟延迟，其向直接数字合成器提供随机时钟，以在用于扫描本地振荡器的单位步进时间的时间长度内并入随机定时。 在另一方面，本地振荡器包括扫频步数控制，其最大化阶梯扫描中的步数，以最终降低动态杂散响应。
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公开(公告)号：US20070132761A1
公开(公告)日：2007-06-14
申请号：US10556352
申请日：2004-05-12
IPC分类号： G09G5/22
CPC分类号： G01R23/16
摘要： It is possible to easily set the operation of a spectrum analyzer. The spectrum analyzer receives a signal to be measured. The spectrum analyzer includes a display device (28) having a display screen for displaying the signal to be measured with a vertical axis representing a measurement value (power) of the signal to be measured and a horizontal axis representing frequency. Furthermore, a touch panel is provided on the display screen of the display device (28). When a user of the spectrum analyzer touches a point 32a (f0, P0) on the display screen, peak search is performed to detect a maximal value of the measurement value of the signal to be measured in a range of the vicinity of the touched point (frequency f1 to f2, power P1 to P2) (wherein f1=f0−Δf, f2=f0+Δf, P1=P0−ΔP, P2=P0+ΔP). Thus, it is possible to easily set the range for performing the peak search.
摘要翻译： 可以容易地设置频谱分析仪的操作。 频谱分析仪接收待测信号。 频谱分析仪包括具有显示屏的显示装置（28），显示屏用于表示待测信号的测量值（功率）的垂直轴和表示频率的水平轴显示待测信号。 此外，在显示装置（28）的显示屏上设置触摸面板。 当频谱分析仪的用户在显示屏幕上触摸点32a（f0，P0）时，进行峰值搜索，以在附近的范围内检测待测信号的测量值的最大值 触摸点（频率f 1至f 2，功率P 1至P 2）（其中f 1 = f 0 -Deltaf，f 2 = f 0 + Deltaf，P 1 = P 0 -DeltaP，P 2 = P 0 + DeltaP）。 因此，可以容易地设定用于执行峰值搜索的范围。
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公开(公告)号：US20060286953A1
公开(公告)日：2006-12-21
申请号：US10556354
申请日：2004-05-12
申请人： Hiroaki Takaoku
发明人： Hiroaki Takaoku
CPC分类号： G01R23/173
摘要： A signal measuring device controls the width of a signal for controlling frequency sweep, in accordance with a signal to be measured. The signal measuring device includes a local oscillator (10) for generating a local signal, a mixer (12) for mixing a signal to be measured with the local signal; a frequency sweep section (14) for sweeping the frequency of the local signal, and a sweep control section (30) for terminating the sweep when the presence section of the signal to be measured has terminated. The signal to be measured is a carrier in a burst and the spectrum of the carrier is to be measured. The width of the presence section of the signal to be measured may be changed. Even if changed, it is possible to control the width of the signal for controlling the frequency sweep, in accordance with the signal to be measured since the sweep is terminated when the presence section of the signal to be measured has terminated.
摘要翻译： 信号测量装置根据要测量的信号控制用于控制频率扫描的信号的宽度。 信号测量装置包括用于产生本地信号的本地振荡器（10），用于将待测信号与本地信号混合的混频器（12） 用于扫描本地信号的频率的频率扫描部分（14），以及用于当待测量信号的存在部分已经终止时终止扫描的扫描控制部分（30）。 要测量的信号是突发中的载波，并且要测量载波的频谱。 要测量的信号的存在部分的宽度可以改变。 即使改变，也可以根据要测量的信号来控制用于控制频率扫描的信号的宽度，因为当被测信号的存在部分已经终止时，扫描结束。
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公开(公告)号：US5777464A
公开(公告)日：1998-07-07
申请号：US775307
申请日：1996-12-31
申请人： Hiroaki Takaoku , Shingo Hashida
发明人： Hiroaki Takaoku , Shingo Hashida
IPC分类号： G01R23/173 , G01R23/16
CPC分类号： G01R23/173
摘要： The object of a spectrum analyzer of present invention is to increase a frequency stability and SPAN probability. A voltage control oscillator is rendered to a locked state based on a frequency as a reference frequency output from a direct digital synthesizer. Thereafter, the voltage control oscillator performs a sweep operation for a signal output therefrom, based on a frequency error to which a ramp signal is added by an adder, that is, based on the reference frequency output from the direct digital synthesizer.
摘要翻译： 本发明的频谱分析仪的目的是提高频率稳定性和SPAN概率。 基于作为从直接数字合成器输出的基准频率的频率，使压控振荡器变为锁定状态。 此后，电压控制振荡器基于由加法器加上斜坡信号的频率误差，即基于从直接数字合成器输出的参考频率，对其输出的信号执行扫描操作。
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