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    • 1. 发明申请
    • Actual-Ray and Image-Ray Distinction in Frequency Converters for Spectrum Analysers
    • 频谱分析仪频率转换器中的实际光线和图像 - 光线分辨率
    • US20080150513A1
    • 2008-06-26
    • US11718486
    • 2005-11-10
    • Jacky Griffault
    • Jacky Griffault
    • G01R23/165H03D7/00G01R23/14
    • H03D7/18
    • The process distinguishes image rays and actual rays generated in a frequency converting device from frequency rays of an input signal. The frequency converting device comprises at least a mixer mixing the input signal and a signal provided by a local oscillator and a filter assembly filtering the mixed signals output by the mixer. At least one sweep is carried out wherein the frequency of the local oscillator is varied and wherein the signal level at the output of the frequency converting device is recorded for a set of converted frequencies. A further sweep is carried out so that the frequency of the actual ray generated in the further sweep by an input ray is the same as the frequency of the actual ray generated in said at least one sweep by said input ray and the frequency of the image ray generated in said further sweep by any input ray does not correspond to a frequency for which a ray was generated in each of said at least one sweep.
    • 该过程将频率转换装置中产生的图像光线和实际光线与输入信号的频率光线区分开。 频率转换装置至少包括混合输入信号和由本地振荡器提供的信号的混频器以及滤波器,其对由混频器输出的混合信号进行滤波。 执行至少一次扫描,其中本地振荡器的频率改变,并且其中在一组转换的频率下记录频率转换装置的输出处的信号电平。 进行进一步的扫描,使得通过输入射线进一步扫描中产生的实际射线的频率与通过所述输入射线在所述至少一次扫描中产生的实际射线的频率和图像的频率相同 在所述进一步扫描中通过任何输入射线产生的射线不对应于在所述至少一个扫描中的每一个中产生射线的频率。
    • 2. 发明申请
    • Image Cancellation In Frequency Converters For Spectrum Analysers
    • 用于频谱分析仪的频率转换器中的图像消除
    • US20080136401A1
    • 2008-06-12
    • US11718497
    • 2005-11-10
    • Jacky Griffault
    • Jacky Griffault
    • G01R23/165
    • G01R23/173
    • The process eliminates image rays generated in a frequency converting device generating actual rays and image rays from frequency rays of an input signal. The frequency converting device comprising a mixer mixing the input signal and a signal provided by a local oscillator and a filter assembly filtering the mixed signals output by the mixer. In a first sweep and a second sweep, the frequency of the oscillator is varied and the signal level at the output of the frequency converting device is recorded for a set of converted frequencies. The second sweep is carried out so that the frequency of the actual ray generated in the second sweep by an input ray is the same as the frequency of the actual ray generated in said first sweep by said input ray, and the frequency of the image ray generated in the second sweep by an input ray is not the same as the frequency of the image ray generated in said first sweep by said input ray. Then, the process determines if a ray-including signal level was recorded both during the first sweep and the second sweep for at least one converted frequency and displays an indication of the presence of a ray for said at least one converted frequency on a screen only if said determination is positive.
    • 该过程消除了在由输入信号的频率射线产生实际光线和图像光的变频装置中产生的图像光线。 该变频装置包括混合输入信号和由本地振荡器提供的信号的混频器以及滤波器,其对由混频器输出的混合信号进行滤波。 在第一扫描和第二扫描中,振荡器的频率变化,并且对于一组转换的频率记录频率转换装置的输出处的信号电平。 执行第二扫描,使得通过输入射线在第二扫描中产生的实际射线的频率与通过所述输入射线在所述第一扫描中产生的实际射线的频率相同,并且图像射线的频率 通过输入射线在第二扫描中产生的频率与通过所述输入射线在所述第一扫描中产生的图像射线的频率不同。 然后,该过程确定在第一次扫描期间是否记录了含有射线的信号电平,并且对于至少一个转换的频率是否记录了第二次扫描,并且仅在屏幕上显示用于所述至少一个转换频率的光线的存在的指示 如果所述确定是肯定的。
    • 3. 发明授权
    • Image cancellation in frequency converters for spectrum analysers
    • 频谱分析仪变频器中的图像消除
    • US07741830B2
    • 2010-06-22
    • US11718497
    • 2005-11-10
    • Jacky Griffault
    • Jacky Griffault
    • G01R19/00G01R23/14
    • G01R23/173
    • The process eliminates image rays generated in a frequency converting device generating actual rays and image rays from frequency rays of an input signal. The frequency converting device comprising a mixer mixing the input signal and a signal provided by a local oscillator and a filter assembly filtering the mixed signals output by the mixer. In a first sweep and a second sweep, the frequency of the oscillator is varied and the signal level at the output of the frequency converting device is recorded for a set of converted frequencies. The second sweep is carried out so that the frequency of the actual ray generated in the second sweep by an input ray is the same as the frequency of the actual ray generated in said first sweep by said input ray, and the frequency of the image ray generated in the second sweep by an input ray is not the same as the frequency of the image ray generated in said first sweep by said input ray. Then, the process determines if a ray-including signal level was recorded both during the first sweep and the second sweep for at least one converted frequency and displays an indication of the presence of a ray for said at least one converted frequency on a screen only if said determination is positive.
    • 该过程消除了在由输入信号的频率射线产生实际光线和图像光的变频装置中产生的图像光线。 该变频装置包括混合输入信号和由本地振荡器提供的信号的混频器以及滤波器,其对由混频器输出的混合信号进行滤波。 在第一扫描和第二扫描中,振荡器的频率变化,并且对于一组转换的频率记录频率转换装置的输出处的信号电平。 执行第二扫描,使得通过输入射线在第二扫描中产生的实际射线的频率与通过所述输入射线在所述第一扫描中产生的实际射线的频率相同,并且图像射线的频率 通过输入射线在第二扫描中产生的频率与通过所述输入射线在所述第一扫描中产生的图像射线的频率不同。 然后,该过程确定在第一次扫描期间是否记录了含有射线的信号电平,并且对于至少一个转换的频率是否记录了第二次扫描,并且仅在屏幕上显示用于所述至少一个转换频率的光线的存在的指示 如果所述确定是肯定的。
    • 4. 发明授权
    • Actual-ray and image-ray distinction in frequency converters for spectrum analysers
    • 频谱分析仪变频器中的实际射线和图像分辨率
    • US07701195B2
    • 2010-04-20
    • US11718486
    • 2005-11-10
    • Jacky Griffault
    • Jacky Griffault
    • G01R17/16
    • H03D7/18
    • The process distinguishes image rays and actual rays generated in a frequency converting device from frequency rays of an input signal. The frequency converting device comprises at least a mixer mixing the input signal and a signal provided by a local oscillator and a filter assembly filtering the mixed signals output by the mixer. At least one sweep is carried out wherein the frequency of the local oscillator is varied and wherein the signal level at the output of the frequency converting device is recorded for a set of converted frequencies. A further sweep is carried out so that the frequency of the actual ray generated in the further sweep by an input ray is the same as the frequency of the actual ray generated in said at least one sweep by said input ray and the frequency of the image ray generated in said further sweep by any input ray does not correspond to a frequency for which a ray was generated in each of said at least one sweep.
    • 该过程将频率转换装置中产生的图像光线和实际光线与输入信号的频率光线区分开。 频率转换装置至少包括混合输入信号和由本地振荡器提供的信号的混频器以及滤波器,其对由混频器输出的混合信号进行滤波。 执行至少一次扫描,其中本地振荡器的频率改变,并且其中在一组转换的频率下记录频率转换装置的输出处的信号电平。 进行进一步的扫描,使得通过输入射线进一步扫描中产生的实际射线的频率与通过所述输入射线在所述至少一次扫描中产生的实际射线的频率和图像的频率相同 在所述进一步扫描中通过任何输入射线产生的射线不对应于在所述至少一个扫描中的每一个中产生射线的频率。