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)
10/2003
10/22/2003CN1450741A Measnving device and method thereof
10/21/2003US6636817 Method and apparatus for enhanced mechanical signature analysis
10/16/2003US20030194046 Method for period counting using a tunable oscillator
10/14/2003US6632687 Methods of compensating for wafer parameters
10/09/2003US20030191595 Measuring apparatus and method therefor
10/09/2003US20030191593 Pulse output function for programmable logic controller
10/08/2003EP1351064A1 Measuring apparatus comprising spectrum analyser and method therefor
10/08/2003CN1123775C Method and device for measuring frequency and period
10/07/2003US6631341 Signal analyzing apparatus
10/07/2003US6630820 Method and apparatus for measuring the instantaneous frequency of FM signals
09/2003
09/30/2003US6629049 Method for non-harmonic analysis of waveforms for synthesis, interpolation and extrapolation
09/25/2003US20030179820 Audio spectrum analyzer implemented with a minimum number of multiply operations
09/25/2003US20030178982 Method and apparatus for determining frequency of an alternating current signal of an electric power system
09/23/2003US6624623 Method and apparatus for digitally measuring the frequency of a signal by integration of its signal phase
09/23/2003CA2165929C Circuit interrupter providing protection and waveform capture for harmonic analysis
09/18/2003US20030173976 Highly time resolved impedance spectroscopy
09/17/2003CN1442704A Improved calibration of vector network analyzer
09/17/2003CN1121768C Self checking circuit in microwave equipment
09/16/2003US6621277 Phase noise measurement module and method for a spectrum analyzer
09/11/2003US20030171886 Calibration for vector network analyzer
09/10/2003CN1441906A Wave form detector and state monitoring system using it
09/09/2003US6617859 Method for diagnosing insulation degradation in underground cable
09/02/2003US6614271 Signal detect circuit for high speed data receivers
08/2003
08/28/2003WO2002069077B1 Separation of periodic and non-periodic signal components
08/27/2003EP1337845A2 Method for analyzing mass spectra
08/21/2003WO2003069359A1 Method and apparatus for zero-mixing spectrum analysis
08/19/2003US6608474 Frequency change measuring device
08/14/2003US20030151544 Radar
08/14/2003US20030151399 Method and measuring device for measuring the spectra in adjacent channels
08/07/2003US20030146743 Very fast swept spectrum analyzer
08/05/2003US6603298 System for estimating the frequency of the power signal on a power transmission line
08/05/2003CA2344425C System and method for frequency compensation in an energy meter
07/2003
07/30/2003EP1330690A2 Separation of periodic and non-periodic signal components
07/30/2003EP1330658A2 Bist method for testing cut-off frequency of low-pass filters
07/29/2003US6600328 Analog method and circuit for monitoring digital events performance
07/24/2003WO2003060615A2 Pulse output function for programmable logic controller
07/24/2003WO2003060557A2 Method for assigning a pulse response to one of a plurality of pulse types with different decay times and device for carrying out said method
07/24/2003US20030138036 Method and device for identifying bit rate using frequency divider
07/22/2003US6598005 Method for measuring the frequency of a sinusoidal signal
07/22/2003US6597205 High accuracy method for determining the frequency of a pulse input signal over a wide frequency range
07/22/2003US6597161 Method and apparatus for spectrum analysis with variable detection latency and multiple layer coherent integrations
07/22/2003US6597160 Method for measuring fundamental frequency component of fault current or voltage signal
07/17/2003WO2003058271A1 Rejection of narrowband frequency components in wideband positioning signals
07/17/2003WO2003058261A1 Dft leakage removal for non-coherently sampled signals
07/15/2003US6594605 Correlation function measuring method and apparatus
07/10/2003WO2003056348A2 Method for determining the frequency of a pulse input signal over a wide frequency range
07/08/2003US6590376 Method of deriving a frequency of a pulse signal from alternate sources and method of calibrating same
07/03/2003US20030123584 Trace video filtering using wavelet de-noising techniques
07/02/2003EP1053479A4 Electric arc monitoring systems
07/01/2003US6587139 Device for measuring period of synchronizing signal and display device
06/2003
06/26/2003US20030117181 High accuracy method for determining the frequency of a pulse input signal over a wide frequency range
06/26/2003US20030117122 Frequency change measuring device
06/25/2003EP0752106B1 Method for analyzing a waveform
06/18/2003EP1066534B1 Vector network analyser
06/17/2003US6580775 Method of detecting frequency of digital phase locked loop
06/12/2003US20030108215 Frequency threshold audio activity detector
06/10/2003US6577968 Method of estimating signal frequency
06/10/2003US6577964 Apparatus and method for determining compliance margin of a waveform relative to a standard
06/05/2003WO2003046586A1 Method and apparatus for spectrom analysis
06/03/2003US6574573 Spectrum analysis and display method time series
05/2003
05/30/2003WO2003044543A2 Method and apparatus for measuring a waveform
05/29/2003US20030098682 Method and apparatus for spectrum analysis with variable detection latency and multiple layer coherent integrations
05/28/2003CN1421030A Methods and apparatuses for signal analysis
05/22/2003WO2002069077A3 Separation of periodic and non-periodic signal components
05/22/2003US20030097227 Method of non-linear analysis of biological sequence data
05/22/2003US20030094937 Clock skew measuring apparatus and method
05/22/2003US20030094936 Method for measuring fundamental frequency component of fault current or voltage signal
05/20/2003US6567762 Dynamic range extension apparatus and method
05/08/2003WO2003038453A1 High-frequency detection method and high-frequency detection circuit
05/07/2003EP1308733A1 RF enclosure with a testing fixture
05/06/2003US6559630 Method of measuring frequency of AC power
05/02/2003EP1305644A2 Method and measuring device for measuring the spectra in adjacent channels
05/01/2003WO2003036313A1 Clock/skew measurement apparatus and clock/skew measurement method
05/01/2003WO2002027336A3 Bist method for testing cut-off frequency of low-pass filters
05/01/2003US20030080726 Mechanical interface for rapid replacement of RF fixture components
05/01/2003US20030080724 Phase noise measurement module and method for a spectrum analyzer
04/2003
04/29/2003US6556941 Separation of periodic and non-periodic signal components
04/29/2003US6556001 Highly time resolved impedance spectroscopy
04/24/2003WO2002042733A9 Method for analyzing mass spectra
04/22/2003US6553334 System for surveillance of spectral signals
04/22/2003US6552995 Spectrum diffusion signal analyzer and method of analyzing diffusion signal
04/17/2003WO2003031031A1 Method for analyzing mass spectra
04/17/2003US20030071635 Method for checking an occurrence of a signal component and device to perform the method
04/17/2003CA2429327A1 Method for analyzing mass spectra
04/16/2003CN1410776A Homosequence specific phase frequency measurement method and high accuracy frequency meter
04/10/2003US20030069511 Method of and apparatus for deriving indices characterizing atrial arrhythmias
04/10/2003DE19930707C2 Meßverfahren, Meßvorrichtung sowie Auswerteelektronik Methods of measurement, measuring and evaluation
04/09/2003EP1300110A2 Method of and apparatus for deriving indices characterising atrial arrhythmias
04/09/2003CN1409822A Analysing signals
04/08/2003US6546346 Method for determining the resonance frequency of an electric resonant circuit
04/08/2003US6545454 System and method for testing an integrated circuit device using FFT analysis based on a non-iterative FFT coherency analysis algorithm
04/03/2003US20030062929 Phase to sine amplitude conversion system and method
04/02/2003CN2543071Y Power factor and frequency combined transmitter
04/01/2003US6542836 Waveform signal analyzer
03/2003
03/27/2003US20030058970 Method and apparatus for measuring a waveform
03/20/2003US20030052698 Signal reproduction block
03/20/2003US20030052662 Method and apparatus for measuring the instantaneous frequency of FM signals
03/19/2003CN2540638Y 便携式频谱分析仪 Portable spectrum analyzer
03/18/2003CA2059352C Method and apparatus for measuring the degree of fullness in a mill
03/12/2003CN1402012A Three-phase AC frequency measuring method and device
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