公开(公告)号：US08229706B2

公开(公告)日：2012-07-24

申请号：US12136060

申请日：2008-06-10

申请人： Masayuki Kawabata ,  Takayuki Akita ,  Eiji Kanoh

发明人： Masayuki Kawabata ,  Takayuki Akita ,  Eiji Kanoh

IPC分类号： H04B3/23

CPC分类号： G01R13/0272

摘要： Provided is a sampling apparatus that samples a signal under measurement, including a clock control section that generates a plurality of sampling clocks at a plurality of sampling phases at determined non-uniform intervals, so as to cancel out replicas in a sampling band that are not observation targets, from among the replicas of the signal under measurement and the replicas of the negative frequency component of the signal under measurement, in each sampling repetition cycle; and a sampling section that samples the signal under measurement with each of the plurality of sampling clocks.

摘要翻译： 提供了一种采样装置，其对测量的信号进行采样，包括时钟控制部分，其以确定的不均匀间隔在多个采样相位产生多个采样时钟，以便抵消不是的采样频带中的副本 在每个采样重复周期中，测量信号的复本和测量信号的负频率分量的复本之间的观测目标; 以及采样部分，用于对所述多个采样时钟中的每个采样时钟对所测量的信号进行采样。

公开(公告)号：US20090306936A1

公开(公告)日：2009-12-10

申请号：US12136060

申请日：2008-06-10

申请人： Masayuki Kawabata ,  Takayuki Akita ,  Eiji Kanoh

发明人： Masayuki Kawabata ,  Takayuki Akita ,  Eiji Kanoh

IPC分类号： G06F15/00

CPC分类号： G01R13/0272

摘要： Provided is a sampling apparatus that samples a signal under measurement, including a clock control section that generates a plurality of sampling clocks at a plurality of sampling phases at determined non-uniform intervals, so as to cancel out replicas in a sampling band that are not observation targets, from among the replicas of the signal under measurement and the replicas of the negative frequency component of the signal under measurement, in each sampling repetition cycle; and a sampling section that samples the signal under measurement with each of the plurality of sampling clocks.

摘要翻译： 提供了一种采样装置，其对测量的信号进行采样，包括时钟控制部分，其以确定的不均匀间隔在多个采样相位产生多个采样时钟，以便抵消不是的采样频带中的副本 在每个采样重复周期中，测量信号的复本和测量信号的负频率分量的复本之间的观测目标; 以及采样部分，用于对所述多个采样时钟中的每个采样时钟对所测量的信号进行采样。

公开(公告)号：US08374813B2

公开(公告)日：2013-02-12

申请号：US12136063

申请日：2008-06-10

申请人： Takayuki Akita ,  Eiji Kanoh ,  Masayuki Kawabata

发明人： Takayuki Akita ,  Eiji Kanoh ,  Masayuki Kawabata

IPC分类号： G01R25/00 ,  H04B15/00

CPC分类号： G01R13/0272

摘要： Provided is a sampling apparatus that samples a signal under measurement, including a sampling section that samples the signal under measurement with a plurality of sampling phases at non-uniform intervals for each sampling repetition cycle; and an inverting section that cancels out a replica that is not an observation target, from among the replicas in a sampling band of the signal under measurement and the replicas in the sampling band of a frequency component of the signal under measurement, by inverting signs of values of the signal under measurement sampled with at least one sampling phase from among the plurality of sampling phases.

摘要翻译： 提供一种采样装置，对测量的信号进行采样，包括：对于每个采样重复周期，以不均匀的间隔以多个采样相位对被测信号进行采样的采样部分; 以及反相部，其从测量信号的采样频带的复制品和被测信号的频率分量的采样频带中的复制品中取出不是观察对象的副本，通过转换 在多个采样阶段中用至少一个采样相位采样的测量信号的值。

公开(公告)号：US08271222B2

公开(公告)日：2012-09-18

申请号：US12136064

申请日：2008-06-10

申请人： Eiji Kanoh ,  Takayuki Akita ,  Masayuki Kawabata

发明人： Eiji Kanoh ,  Takayuki Akita ,  Masayuki Kawabata

IPC分类号： G01R29/02 ,  G01R29/00

CPC分类号： G01R13/0272

摘要： Provided is a sampling apparatus that samples a signal under measurement, including a sample processing section that outputs sample data obtained by sampling the signal under measurement with a sampling timing at non-uniform intervals obtained by thinning a reference clock, a storage section that stores the sample data, and a waveform generating section that generates a waveform of the signal under measurement based on the sample data read from the storage section. The sample processing section includes a sampler that samples the signal under measurement in synchronization with the reference clock and a data thinning section that thins the sample data output by the sampler and outputs this thinned data as sample data with the sampling timing at non-uniform intervals.

摘要翻译： 提供了一种采样装置，其对测量的信号进行采样，该采样装置包括采样处理部分，该采样处理部分输出通过采样定时获取的采样数据，采样定时以非均匀间隔稀疏参考时钟，存储部分 采样数据和波形生成部，其基于从存储部读取的采样数据生成被测信号的波形。 样本处理部分包括采样器，其与参考时钟同步地对测量的信号进行采样;以及数据稀疏部分，其使由采样器输出的样本数据变薄，并以不均匀间隔以采样定时输出该稀疏数据作为样本数据 。

公开(公告)号：US20090306919A1

公开(公告)日：2009-12-10

申请号：US12136063

申请日：2008-06-10

申请人： Takayuki Akita ,  Eiji Kanoh ,  Masayuki Kawabata

发明人： Takayuki Akita ,  Eiji Kanoh ,  Masayuki Kawabata

IPC分类号： G01R13/00 ,  G06F15/00

CPC分类号： G01R13/0272

摘要： Provided is a sampling apparatus that samples a signal under measurement, including a sampling section that samples the signal under measurement with a plurality of sampling phases at non-uniform intervals for each sampling repetition cycle; and an inverting section that cancels out a replica that is not an observation target, from among the replicas in a sampling band of the signal under measurement and the replicas in the sampling band of a frequency component of the signal under measurement, by inverting signs of values of the signal under measurement sampled with at least one sampling phase from among the plurality of sampling phases.

摘要翻译： 提供一种采样装置，对测量的信号进行采样，包括：对于每个采样重复周期，以不均匀的间隔以多个采样相位对被测信号进行采样的采样部分; 以及反相部，其从测量信号的采样频带的复制品和被测信号的频率分量的采样频带中的复制品中取出不是观察对象的副本，通过转换 在多个采样阶段中用至少一个采样相位采样的测量信号的值。

公开(公告)号：US20080231254A1

公开(公告)日：2008-09-25

申请号：US11864925

申请日：2007-09-29

申请人： Eiji Kanoh ,  Makoto Nakanishi

发明人： Eiji Kanoh ,  Makoto Nakanishi

IPC分类号： G01R23/00

CPC分类号： G01R23/163 ,  G01R23/165

摘要： A spectrum analyzer that measures a signal component for every frequency of an input signal includes a local signal generating section generating a local signal having a designated frequency, a multiplying section outputting a synthesized signal obtained by multiplying the local signal with the input signal, a band-pass filter through which a signal component having a prescribed frequency band of the synthesized signal is passed, an A-D conversion section outputting a digital output signal obtained by sampling and digitalizing the passed signal component, a spectrum generation section that passes a signal component within a measured frequency range of the input signal through the band-pass filter and generates a first frequency spectrum based on the digital output signal acquired from the signal component passed through the band-pass filter, and an elimination section generating a frequency spectrum free of noise based on the first frequency spectrum generated by the spectrum generation section.

摘要翻译： 测量输入信号的每个频率的信号分量的频谱分析器包括产生具有指定频率的本地信号的本地信号产生部分，输出通过将本地信号与输入信号相乘而获得的合成信号的乘法部分， 通过滤波器，具有合成信号的规定频带的信号分量通过的AD转换部，输出通过对通过的信号分量进行采样和数字化而获得的数字输出信号的AD转换部，将信号分量传递到 通过带通滤波器测量的输入信号的频率范围，并且基于从通过带通滤波器的信号分量获取的数字输出信号产生第一频谱，以及消除部分，产生不含噪声的频谱 在频谱生成的第一个频谱上 n部分。

公开(公告)号：US06535331B2

公开(公告)日：2003-03-18

申请号：US09761991

申请日：2001-01-16

申请人： Kazunori Shiota ,  Eiji Kanoh

发明人： Kazunori Shiota ,  Eiji Kanoh

IPC分类号： H01S314

CPC分类号： H04B10/2935 ,  H01S3/06758

摘要： A wideband optical amplifier for amplifying an input optical signal of known wavelength in one of at least two bands of wavelength has a significantly small number of optical components and thus is low cost. The wideband optical amplifier includes: a first set of a first optical coupler, a first pump light source, and a first erbium doped optical fiber (EDF) which is excited by the first pump light source; an optical switch for changing an output signal of the first set; and a second set of a second optical coupler, a second pump light source, and a second EDF which is excited by the second pump light source. The first set amplifies a first band of optical signal while a series connection of the first set and the second set amplifies a second band of optical signal. In another aspect, a wideband variable wavelength optical source is achieved by utilizing the wideband optical amplifier described above within a closed loop.

摘要翻译： 用于放大至少两个波长波段中已知波长的输入光信号的宽带光放大器具有非常少数量的光学部件，因而成本低。 宽带光放大器包括：由第一泵浦光源激发的第一组第一光耦合器，第一泵浦光源和第一掺铒光纤（EDF）; 用于改变第一组的输出信号的光学开关; 以及由第二泵浦光源激励的第二组第二光耦合器，第二泵浦光源和第二EDF。 第一组放大第一频带的光信号，而第一组和第二组的串联连接放大第二频带的光信号。 另一方面，宽带可变波长光源通过利用上述在闭环内的宽带光放大器实现。

公开(公告)号：US08072206B2

公开(公告)日：2011-12-06

申请号：US12326907

申请日：2008-12-03

申请人： Eiji Kanoh ,  Makoto Nakanishi ,  Tatsuru Orikasa ,  Tomoo Yamanouchi

发明人： Eiji Kanoh ,  Makoto Nakanishi ,  Tatsuru Orikasa ,  Tomoo Yamanouchi

IPC分类号： G01R23/00

CPC分类号： G01R23/173 ,  G01R23/16

摘要： Provided is a spectrum analysis system that measures a signal component at each frequency of an input signal, comprising a sampling section that samples the input signal at prescribed bandwidths to digitize the input signal, and outputs a resulting digital output signal; a converting section that converts the digital output signal from the sampling section into the signal component at each frequency of a unit bandwidth; and an output section that (i) outputs the digital output signal output by the sampling section when a frequency span, which is a frequency range in which the measurement result of the signal component at each frequency of the input signal is output, is greater than or equal to a predetermined reference bandwidth and (ii) outputs the signal component at each frequency converted by the converting section when the frequency span is less than the predetermined reference bandwidth.

摘要翻译： 提供了一种频谱分析系统，其测量输入信号的每个频率处的信号分量，包括：采样部分，其以规定的带宽对输入信号进行采样以对输入信号进行数字化，并输出结果数字输出信号; 转换部分，其以单位带宽的每个频率将来自采样部分的数字输出信号转换为信号分量; （i）输出作为输入信号的各个频率的信号分量的测量结果的频率范围的频率范围大于（i）的输出部，其输出由采样部输出的数字输出信号。 或等于预定参考带宽，并且（ii）当频率跨度小于预定参考带宽时，输出由转换部分转换的每个频率处的信号分量。