Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503)
06/2014
06/26/2014WO2014098863A1 Method and apparatus for determining characteristics of an input signal
06/26/2014WO2014098557A1 A system and method for determining frequency of a signal
06/26/2014WO2014095129A1 Fundamental frequency stability and harmonic analysis
06/26/2014US20140176116 Quantifying silicon degradation in an integrated circuit
06/25/2014EP2746785A1 Fundamental frequency stability and harmonic analysis
06/25/2014CN203672984U 便携式网络分析仪 Portable Network Analyzer
06/25/2014CN103890594A 分析三相电网中的电能的质量的方法和设备 Analysis method and apparatus of the three-phase power grid quality
06/25/2014CN103884910A 一种适用于频率偏移的电力系统相量计算方法 A phasor calculation method applicable to the frequency offset of the power system
06/25/2014CN103884909A 基于稀疏分解的低信噪比轨道移频信号高精度检测方法 Signal precision detection method based on sparse decomposition of low SNR orbit frequency shift
06/25/2014CN103884908A 一种交流电来源的鉴别方法 Identification method of alternating current source
06/24/2014US8762096 Trigger generation for digital modulation signal analysis
06/24/2014US8762087 Accurate integrated circuit performance prediction using on-board sensors
06/24/2014US8760176 Methods and systems for production testing of DCO capacitors
06/24/2014US8760148 Pulse modulated PIM measurement instrument
06/19/2014WO2014093173A1 Voltage and temperature compensated frequency converter
06/19/2014WO2014091133A1 Method and device for predictive evaluation of the intermodulation power in an electronic device
06/19/2014WO2014090450A1 Estimating an electricity supply's fundamental frequency
06/19/2014US20140167734 Method and device for detecting aircraft radio signals transmitted in the same channel simultaneously
06/18/2014EP2743711A1 Automatic centre frequency and span setting in a test and measurement instrument
06/18/2014EP2743709A1 Real time spectrum analyzer with zoom display
06/18/2014CN203658463U 一种基于dsp的数字频率计 Dsp based digital frequency meter
06/18/2014CN103873023A Realtime power mask trigger
06/18/2014CN103869162A Dynamic signal phasor measurement method based on time domain quasi-synchronization
06/18/2014CN103869159A Harmonic detection device
06/18/2014CN103869158A Spectrum analyzer
06/18/2014CN103869157A Automatic centre frequency and span setting in a test and measurement instrument
06/18/2014CN103869156A DMTD measuring method and measuring system
06/18/2014CN103869155A Method and device for electric generator frequency measurement based on PLC high-speed input
06/18/2014CN102707158B Method for testing molten drops of vacuum consumable electrode arc furnace based on saturable reactor stabilized current supply
06/18/2014CN102662108B Measuring method and device of sine wave local distortion
06/18/2014CN102405415B Noise suppression techniques in high precision long-term frequency/timing measurements
06/18/2014CN102246415B Methods for determining the frequency or period of a signal
06/17/2014US8754631 Test apparatus for digital modulated signal
06/12/2014US20140159703 System and method for verifying the operating frequency of digital control circuitry
06/12/2014DE102012222487A1 Measuring device, useful for characterizing e.g. polyurethane adhesives, comprises piezoelectric element, transducer and control device, where control device is connected with oscillator to excite set of excitation frequencies
06/11/2014EP2741092A1 Estimating an electricity supply's fundamental frequency
06/11/2014CN203643597U 一种移动式短波侦察测向设备 A portable shortwave reconnaissance finding equipment
06/11/2014CN103856276A Real-time autocorrection method for frequency spectrum non-flat noise floor
06/11/2014CN103852638A Detection circuit for detecting power frequency output frequency
06/11/2014CN102565531B Measurement instrument for dynamic parameters of piezoelectric transducer, and measurement methods for measurement instrument
06/11/2014CN101692108B Improved video bandwidth resolution in dft-based spectrum analysis
06/10/2014US8751177 Method and arrangement for estimating angular frequency
06/10/2014US8749641 Detecting media source quality to determine introduced phenomenon
06/05/2014US20140152293 Sensing circuit
06/04/2014CN203630223U 一种电力系统频率特性测量专用装置 A power system frequency characteristic measurement dedicated device
06/04/2014CN203630222U 数字频率计 Digital frequency meter
06/04/2014CN203630221U 一种应用a/d转换器的频率采样及转换电路 An application of a / d converter and sampling frequency conversion circuit
06/04/2014CN103840451A Distributed power supply island detection method based on distribution transformation high-voltage side signal correction
06/04/2014CN103837742A Microwave frequency-spectrum analyzer based on microwave photon processing
06/04/2014CN103837741A Equal-precision frequency testing system based on FPGA and design method thereof
06/04/2014CN103837740A High-precision digital instantaneous frequency measurement method and device
06/04/2014CN103837739A Time domain and frequency domain comprehensive test device
06/04/2014CN103837725A Combinatorial mask triggering in time or frequency domain
06/04/2014CN102331535B Alternating current physical quantity measuring device and method as well as data acquisition device and method
06/03/2014US8742749 Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing
05/2014
05/29/2014US20140145707 Voltage fluctuation detection circuit and semiconductor integrated circuit
05/28/2014EP2734858A1 Radar pulse detection using a digital radar receiver
05/28/2014CN103823088A 用于电磁阀频率计的移动底座 Solenoid valves for mobile base frequency meter
05/28/2014CN102508027B 一种次同步模态信号的筛选分离监测方法 Screening of a sub-synchronous mode signal separation monitoring methods
05/27/2014US8736251 Digital sensing apparatus and digital readout module thereof
05/27/2014US8736250 System and method for the analysis of DNA sequences in biological fluids
05/27/2014US8735808 Method of mass spectrometry and mass spectrometer using peak deconvolution
05/22/2014US20140142883 Implementing frequency spectrum analysis using causality hilbert transform results of vna-generated s-parameter model information
05/22/2014US20140142880 Combinatorial mask triggering in time or frequency domain
05/22/2014DE102011052900B4 Verfahren und Vorrichtung zur Ein- und Zuordnung von Signalemittern in Echtzeit und deren Verwendung als Warnvorrichtung Method and apparatus for input and assignment of signals emitters in real time and their use as warning device
05/21/2014EP2733497A1 Method for estimating a frequency of a harmonic in an AC current passing to/from an ac machine
05/21/2014EP2733495A2 Combinatorial mask triggering in time or frequency domain
05/21/2014EP2732279A1 Apparatus and method for detecting at least one periodically occurring defect on an object
05/21/2014CN203606409U 一种电容式电压互感器 A capacitive voltage transformers
05/21/2014CN103809054A 一种基于安卓平台的铁路信号波形记录显示系统 Railway signal waveform recording a display system based on Android platform
05/21/2014CN103809024A 基于fpga的实时频谱分析系统 Fpga-based real-time spectrum analysis system
05/21/2014CN103809023A 基于二分搜索的电网同步谐波相量测量方法 Synchronous harmonic phasor measurement method is based binary search grid
05/21/2014CN103809022A 使用增强递归离散傅里叶变换的片上专用分析 Using enhanced recursive discrete Fourier transform on-chip dedicated analysis
05/21/2014CN103809021A 谐波分析仪 Harmonic Analyzer
05/21/2014CN103809020A 互联电网低频振荡频率和阻尼估计值联合置信区间的确定方法 Method for determining the range of interconnected grid frequency and low frequency oscillation damping estimates Joint Confidence
05/20/2014US8731857 Method and apparatus for generating a gated density bitmap
05/19/2014CA2833416A1 Method for estimating a frequency of a harmonic in an ac current passing to/from an ac machine
05/15/2014US20140132281 State Monitoring or Diagnostics System
05/15/2014DE102012219128A1 Method for determining anatomical causes of snoring person during surgery, involves determining localization of sound formation place in vowel tract by distance from acoustic source to delta using resonant frequencies of transfer function
05/14/2014CN103797362A 用于探测在目标物上的至少一个周期性出现的缺陷的设备和方法 For detecting the object on at least one of a device and a method of periodically occurring defect
05/14/2014CN103792427A 对非平稳信号进行实时频谱分析的方法及系统 For non-stationary signals in real-time spectral analysis method and system
05/14/2014CN103792426A 一种基于三角载波的多周期及混沌spwm频谱计算方法 Triangular carrier based multi-cycle and chaotic spwm spectrum calculation method
05/14/2014CN102288807B 一种测量电网电压闪变的方法 A grid method for measuring voltage flicker
05/13/2014US8725463 Frequency spectrum analyzing apparatus
05/13/2014US8723553 Systems and methods for performing frequency offset estimation
05/08/2014US20140125315 Determining high frequency operating parameters in a plasma system
05/07/2014CN203587691U 基于cpld与51单片机的数字频率计系统 Cpld and 51 microcontroller based digital frequency meter system
05/07/2014CN203587690U 基于单片机频率采集装置 Microcontroller-based frequency acquisition device
05/07/2014CN203587689U 一种长期和短期频率稳定度测量装置 A long-term and short-term frequency stability measurement device
05/07/2014CN203587688U 一种频率稳定度测量装置 A frequency stability of the measuring device
05/07/2014CN103777076A 三相四线制系统任意次谐波分量和无功电流检测方法 Phase four-wire system for random harmonic components and reactive current detection method
05/07/2014CN103777075A 频率测试电路 Frequency test circuit
05/07/2014CN103777074A 声表面波器件谐振频率测量装置及方法 Resonant frequency surface acoustic wave device and method for measuring devices
05/07/2014CN103777073A 宽带激励声表面波器件谐振频率测量装置及方法 Broadband excitation resonant frequency surface acoustic wave device and method for measuring devices
05/07/2014CN103777072A 对多个时钟源的时钟频率进行监测的方法 A plurality of clock frequency clock source method for monitoring
05/07/2014CN102735928B 基于微机械砷化镓基的悬臂梁频率检测器及检测方法 Cantilever frequency detector and detection method based on micro-mechanical GaAs substrate
05/07/2014CN102735927B 基于微机械硅基悬臂梁的频率检测器及检测方法 Micromachined silicon cantilever frequency detector and detection method based on
05/07/2014CN102735925B 基于微机械硅基固支梁的频率检测器及检测方法 Frequency detector clamped micromachined silicon beam and detection method based on
05/07/2014CN102628894B 一种选择性谐波提取方法 A selective harmonic extraction method
05/07/2014CN102608423B 一种谐波电能的检测方法 A detection method of harmonic energy
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