| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 02/14/2002 | US20020017926 Frequency determination circuit for a data processing unit |
| 02/13/2002 | CN2476823Y Factory station electric energy quality monitoring and analysing device |
| 02/12/2002 | US6347286 Method and device operating by interpolation in a discrete spectrum to determine characteristics of a signal and application thereof |
| 02/07/2002 | WO2002011295A2 Method and measuring device for measuring the spectra in adjacent channels |
| 02/07/2002 | US20020016691 Signal analyzing apparatus |
| 02/07/2002 | US20020014993 Broad bandwidth, high impedance transponder for electronic identification system |
| 02/07/2002 | DE10043894A1 Verfahren und Messvorrichtung zur Messung des Spektrums in Nachbarkanälen The method and measuring device for measuring the spectrum in adjacent channels |
| 02/05/2002 | US6344735 Spectrum analyzer and spectrum measuring method using the same |
| 01/24/2002 | US20020008587 Methods of compensating for wafer parameters |
| 01/24/2002 | US20020008506 Electric power measuring method, system using the same and computer-readable medium |
| 01/24/2002 | DE10033575A1 Digital signal frequency estimation method, involves superimposing triangular pulse signals output by differentiators and integrators, which are shifted by specific time period to form trapezoidal pulse signals |
| 01/22/2002 | US6340883 Wide band IQ splitting apparatus and calibration method therefor with balanced amplitude and phase between I and Q |
| 01/03/2002 | US20020000800 Precise digital frequency detection |
| 01/03/2002 | US20020000799 Sweep synchronization testing |
| 01/02/2002 | EP1168237A2 Broad bandwidth, high impedance transponder for electronic identification system |
| 01/02/2002 | EP1167980A2 Sweep signal synchronization testing |
| 01/02/2002 | CN1329398A Wide-bandwidth high-impedance transceiver for electronic identification system |
| 12/27/2001 | US20010054889 Method of analyzing the spectrum of a radio communication system transmission signal |
| 12/18/2001 | US6331779 Method and apparatus for testing frequency-dependent electrical circuits |
| 12/18/2001 | CA2191742C Process for determining the harmonic oscillations of the fundamental component of an electric signal |
| 12/11/2001 | US6330287 Digital channelizer having efficient architecture for window presum using distributed arithmetic for providing window presum calculations in one clock cycle |
| 12/11/2001 | US6329806 Process for determining the harmonic oscillations of the fundamental component of an electrical signal |
| 12/06/2001 | US20010048298 Method and apparatus for analyzing noise in a digital circuit, and storage medium storing an analysis program |
| 12/05/2001 | EP1161043A2 Signal type identification |
| 12/04/2001 | US6327603 Digital channelizer having efficient architecture for presum discrete fourier transformation selectively of real or complex data and method of operation |
| 12/04/2001 | US6326796 Harmonic measuring method and a current injection device for harmonic measurement |
| 12/04/2001 | US6326793 Method and apparatus for testing frequency-dependent electrical circuits |
| 11/29/2001 | WO2001033547B1 Methods and apparatuses for signal analysis |
| 11/29/2001 | DE10103822A1 Korrelationsfunktions-Messverfahren und -Vorrichtung Correlation function measuring method and apparatus |
| 11/22/2001 | WO2001089086A1 Spectrum modeling |
| 11/22/2001 | WO2001087833A2 System and method for managing and analyzing carbohydrate sequences |
| 11/22/2001 | WO2001087832A2 System and method for carbohydrate sequence presentation, comparison and analysis |
| 11/22/2001 | CA2408846A1 System and method for carbohydrate sequence presentation, comparison and analysis |
| 11/13/2001 | US6316945 Process for harmonic measurement accuracy enhancement |
| 11/13/2001 | US6316929 Frequency measurement test circuit and semiconductor integrated circuit having the same |
| 11/13/2001 | US6316928 Spectrum analyzer |
| 11/08/2001 | DE10106801A1 Schwingungsmessverfahren und Frequenzmessvorrichtung Vibration measurement methods and frequency measuring device |
| 11/07/2001 | CN1320822A Frequency change measurer |
| 11/06/2001 | US6313620 Detector system for identifying the frequency of a received signal useful in a channelized receiver |
| 11/06/2001 | US6313619 Arrangement for measurement of phase noise of a test specimen |
| 11/01/2001 | US20010035780 Clock period sensing circuit |
| 10/31/2001 | EP1149348A1 METHOD AND DEVICE FOR DETERMINING THE FIRST MOMENT o f /o OF THE FREQUENCY SPECTRUM OF TIME SIGNALS |
| 10/30/2001 | US6311138 Digital storage oscilloscope with simultaneous primary measurement and derived parameter display on common time axis and method therefor |
| 10/25/2001 | WO2001003445A3 Device and method for determining tone ringing frequency |
| 10/23/2001 | US6307895 Complex Fourier coefficient extractor |
| 10/23/2001 | CA2112451C Circuit analyzing system |
| 10/11/2001 | US20010028262 Time interval measurement system incorporating a linear ramp generation circuit |
| 10/04/2001 | US20010026151 Frequency change measuring device |
| 10/04/2001 | EP1139106A1 Frequency change measuring device |
| 10/02/2001 | US6298309 Current based frequency tracking method and apparatus |
| 09/27/2001 | WO2001071368A1 Frequency sensor for digital signals and method for monitoring the frequency of a digital signal |
| 09/26/2001 | EP1136830A1 Frequency sensing device for digital signals and method for monitoring the frequency of a digital signal |
| 09/19/2001 | EP1133701A1 Method for diagnosing insulation degradation in underground cable |
| 09/19/2001 | CN2449236Y Autoamtic positioning frequency-testing classifier for quartz chip |
| 09/18/2001 | US6292760 Method and apparatus to measure non-coherent signals |
| 09/18/2001 | US6292000 Process for harmonic measurement with enhanced phase accuracy |
| 09/11/2001 | US6288530 Apparatus and method for measuring resonance frequency of electric circuit |
| 09/06/2001 | US20010020220 Correlation function measuring method and apparatus |
| 09/05/2001 | EP1129361A1 A method and system for updating noise estimates during pauses in an information signal |
| 08/23/2001 | WO2000070357A3 Automated frequency stepping noise measurement test system |
| 08/23/2001 | US20010016799 Oscillation measuring method and frequency measuring apparatus |
| 08/22/2001 | CN1309298A Tuning frequency measuring device for filter |
| 08/21/2001 | US6278331 System and method for compensating wafer parameters |
| 08/16/2001 | US20010013785 System and method for tuning a resonant structure |
| 08/16/2001 | EP1124186A2 Method for computing the heartrate variability for use in an ECG-monitor and an ECG-monitor comprising such a computational program |
| 08/14/2001 | US6275020 Frequency analysis method and sweep type spectrum analyzer |
| 08/08/2001 | EP1122762A2 Power delivery system |
| 08/08/2001 | EP0804740B1 Handheld vector network analyzer |
| 08/07/2001 | US6272439 Programmable delay path circuit and operating point frequency detection apparatus |
| 08/02/2001 | US20010011289 Method for improving the accuracy in the determination of a waveform center of a waveform signal |
| 08/01/2001 | EP1119901A1 Frequency to frequency de-randomiser circuit |
| 08/01/2001 | EP1119774A1 Frequency response analyzer |
| 07/31/2001 | US6269200 All optical RF signal channelizer |
| 07/31/2001 | US6268735 Noise source module for microwave test systems |
| 07/26/2001 | US20010009384 Clock period sensing circuit |
| 07/24/2001 | US6265861 Frequency spectrum analyzer with high C/N ratio |
| 07/17/2001 | US6263290 Process and machine for signal waveform analysis |
| 07/17/2001 | US6263289 Method of enhancing the dynamic range of intermodulation distortion measurements |
| 07/12/2001 | US20010007426 Method and apparatus for testing frequency-dependent electrical circuits |
| 07/11/2001 | CN1303540A Method for deriving or calibrating frequency of pulse signal |
| 07/11/2001 | CN1303003A Millimeter wave measuring meter and method |
| 07/04/2001 | CN1302465A Adaptive sampling rate based on power system frequency |
| 06/28/2001 | WO2001047086A1 Sub-harmonic detection and control system |
| 06/28/2001 | CA2362651A1 Sub-harmonic detection and control system |
| 06/27/2001 | EP1111396A2 Frequency domain analysis system for a time domain measurement instrument |
| 06/27/2001 | EP1111364A1 Damage detection of motor pieces |
| 06/27/2001 | CN1067768C Method for measuring long period ultrashort pulsation submillimetre wave frequency |
| 06/26/2001 | US6252411 Method and apparatus for testing frequency-dependent electrical circuits |
| 06/21/2001 | DE10015854A1 Electric power spectrum display procedure in spectrum analyzer, involves averaging electric power value for every frequency sweep and performing logarithm conversion of mean power value for every display point |
| 06/20/2001 | EP1109027A1 Spectrum analysis and display method of time series data of living organism |
| 06/14/2001 | WO2001042798A1 Analysing signals |
| 06/12/2001 | US6246223 Method for use on a parametric tester to measure the output frequency of a ring oscillator through voltage sampling |
| 06/05/2001 | US6242899 Waveform translator for DC to 75 GHz oscillography |
| 05/29/2001 | US6240372 System for surveillance of spectral signals |
| 05/25/2001 | WO2001037502A1 Modulated signal analyzing device |
| 05/25/2001 | WO2001036989A1 Signal analysing apparatus having yto |
| 05/24/2001 | US20010001850 Digital storage oscilloscope with simultaneous primary measurement and derived parameter display on common time axis and method therefor |
| 05/23/2001 | CN2431570Y Portable self-tuning distortion degree measurer |
| 05/22/2001 | US6236276 Method for seeking and setting a resonant frequency and tuner operating according to the method |
| 05/17/2001 | DE19948384A1 Anordnung zum Bestimmen der komplexen Übertragungsfunktion eines Messgerätes Arrangement for determining the complex transfer function of a measuring instrument |