| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 05/15/2008 | WO2008056285A1 Method of determining the harmonic and anharmonic portions of a response signal of a device |
| 05/15/2008 | US20080114557 Variable sensing using frequency domain |
| 05/15/2008 | US20080114556 Optical pulse characterization using phase modulation |
| 05/14/2008 | CN201061124Y Intelligent terminal system of oil well |
| 05/14/2008 | CN201060228Y Electric voltage frequency measurement analysis system |
| 05/13/2008 | US7373281 High bandwidth oscilloscope |
| 05/08/2008 | WO2008002938A3 Methods and apparatus for sensing unconfinement in a plasma processing chamber |
| 05/08/2008 | US20080109179 Signal measuring apparatus and semiconductor testing apparatus |
| 05/08/2008 | US20080106340 Frequency synthesizer and frequency calibration method |
| 05/08/2008 | US20080106250 Method of monitoring a photvoltaic generator |
| 05/07/2008 | CN101173963A Multifunctional tester |
| 05/07/2008 | CN100386635C Circuit and method for inspecting piezoelectric resonance mode by time-domain transient current |
| 05/06/2008 | US7369952 Quantification of disease progression by means of interpolation between parameters based on electromagnetic spectra |
| 05/06/2008 | US7369000 Adaptive frequency detector of phase locked loop |
| 05/06/2008 | CA2341381C Frequency to frequency de-randomiser circuit |
| 05/02/2008 | WO2008050928A1 Intermediate frequency converter for electronic measuring instrument |
| 05/02/2008 | WO2007117618A3 System and method for voltage noise and jitter measurement using time-resolved emission |
| 05/01/2008 | US20080103712 Diagnosis Apparatus For Switchgear |
| 05/01/2008 | US20080100281 Method of Optical Frequency Measurement |
| 04/30/2008 | EP1915629A2 An apparatus and method for multi-phase digital sampling |
| 04/29/2008 | US7365611 Element substrate, test method for element substrate, and manufacturing method for semiconductor device |
| 04/29/2008 | US7365527 System and method for extending the range of a frequency measuring device |
| 04/24/2008 | US20080097712 Test Equipment and Portable Test Device |
| 04/24/2008 | US20080097711 Information processing apparatus and method, program, and record medium |
| 04/24/2008 | US20080094053 Test circuits having ring oscillators and test methods thereof |
| 04/24/2008 | CA2666882A1 System and related circuits and methods for detecting and locating wireless communication device use within a geographical area or facility |
| 04/23/2008 | EP1914899A2 Frequency response correction for a receiver having a frequency translation device |
| 04/23/2008 | CN100383537C Harmonic detecting method based on adaptive neuronal on-line setting |
| 04/22/2008 | US7363219 Hybrid speech coding and system |
| 04/17/2008 | WO2008043639A1 Method and device for checking a sensor signal |
| 04/17/2008 | WO2008043629A1 Efficient clock calibration in electronic equipment |
| 04/17/2008 | US20080091367 Method and apparatus for measurement of fuel cell high frequency resistance in the presence of large undesirable signals |
| 04/17/2008 | US20080088999 Voltage disturbance and harmonics monitor |
| 04/17/2008 | DE102006047994A1 Verfahren und Vorrichtung zur Darstellung von Ordinaten-Abszissen-Wertepaaren auf einer Anzeige-Einrichtung Method and apparatus for the representation of ordinate abscissa value pairs on a display device |
| 04/16/2008 | EP1629388A4 A network analyzing method and a network analyzing apparatus |
| 04/10/2008 | WO2008042506A2 Realtime spectrum trigger system on realtime oscilloscope |
| 04/10/2008 | WO2008000990A3 Method for instantaneously determining rates of distortion of signals on an ac electrical network, and associated device |
| 04/10/2008 | DE19948384B4 Anordnung zum Bestimmen der komplexen Übertragungsfunktion eines Messgerätes Arrangement for determining the complex transfer function of a measuring instrument |
| 04/10/2008 | DE102006045908A1 Processor unit for use in e.g. network of processor units, has interface for coupling with processor units of network, and oscillator with coupling terminal for coupling with electrode outside processor unit |
| 04/09/2008 | CN101158623A Acquiring system eigenfunction and signal feature value method |
| 04/09/2008 | CN100380103C Manufacturing apparatus and life predictive method for whirler |
| 04/08/2008 | US7356423 Apparatus and method for reading out a differential capacity with a first and second partial capacity |
| 04/08/2008 | US7355380 Methods and apparatus for testing delay locked loops and clock skew |
| 04/08/2008 | US7355379 Coaxial type impedance matching device and impedance detecting method for plasma generation |
| 04/03/2008 | WO2008038966A1 Method for measuring antenna characteristics out of operational frequency range of chamber |
| 04/03/2008 | US20080079417 Method in connection with frequency converter |
| 04/02/2008 | CN201043984Y Optoelectronic heterodyne detection circuit |
| 04/01/2008 | US7353127 Apparatus and method for detection and quantification of oscillatory signals |
| 04/01/2008 | US7353126 Method of determining coherent test conditions |
| 04/01/2008 | US7352831 Digital frequency measurement system and method with automatic frequency control |
| 04/01/2008 | US7352252 Circuit and method to measure threshold voltage distributions in SRAM devices |
| 04/01/2008 | US7352165 Delay-locked loop and a method of testing a delay-locked loop |
| 03/27/2008 | DE102006041824A1 Vorrichtung und Verfahren für Analyse von Signalverläufen unter Verwendung von Masken Apparatus and method for analysis of waveforms using masks |
| 03/26/2008 | CN101151542A Method of detecting RF power delivered to a load and complex impedance of the load |
| 03/26/2008 | CN101149423A Permanent-magnetism synchronous motor permanent magnetic field aberration real-time detection and analysis method and device |
| 03/25/2008 | US7349483 Communications device with doppler frequency estimation functions |
| 03/25/2008 | US7348857 Monitoring and compensating for real time local circuit speed in an integrated circuit |
| 03/20/2008 | US20080068256 Stepped Frequency Radar |
| 03/19/2008 | CN201039069Y Self interference resistance execution control device based on dual DSP |
| 03/19/2008 | CN101146307A A frequency spectrum scanning device and its method |
| 03/19/2008 | CN101144841A Harmonic energy metering method |
| 03/18/2008 | US7346101 Spectrum measurement system comprising PC and power meter |
| 03/18/2008 | US7345428 Transducer package for process control |
| 03/13/2008 | WO2008029522A1 Passive intermodulation distortion measuring method and system |
| 03/13/2008 | DE102007040341A1 Datenanzeigen unter Verwendung von Peer-zu-Peer-Kommunikationen in einem Messsystem -Data using peer-to-peer communications in a measurement system |
| 03/12/2008 | CN201035098Y Power consumer harmonic monitoring statistical device |
| 03/12/2008 | CN201035097Y Low noise precision beat machine |
| 03/12/2008 | CN101140304A High precision clock detecting method and testing apparatus |
| 03/06/2008 | WO2008027711A2 Systems and methods for filter center frequency location |
| 03/06/2008 | WO2007021436A3 Directional power detection by quadrature sampling |
| 03/06/2008 | US20080059093 Microwave sensing for determination of loading of filters |
| 03/06/2008 | US20080054880 Measurement device, method, program, and recording medium |
| 03/04/2008 | US7339366 Directional coupler for a accurate power detection |
| 03/04/2008 | US7339365 Phase detector and method of phase detection |
| 03/04/2008 | US7339364 Circuit and method for on-chip jitter measurement |
| 02/28/2008 | WO2008023640A1 Spectrum analyzer system and spectrum analyze method |
| 02/28/2008 | US20080048639 Probing high-frequency signals |
| 02/28/2008 | DE102006038626A1 Verfahren zur dauerhaften Störung/Zerstörung einer Elektronik, insbesondere einer Sprengfalle oder dergleichen Method for permanent disturbance / destruction of electronics, especially a booby trap or the like |
| 02/27/2008 | EP1390764B1 Method for determining the frequency of the current ripple in the armature current of a commutated d.c motor |
| 02/27/2008 | CN101132175A Method and circuit for matching semiconductor device behavior |
| 02/26/2008 | US7336736 Method of detecting and processing pulsed signals in a radio signal |
| 02/26/2008 | US7336084 Delay lock circuit having self-calibrating loop |
| 02/21/2008 | DE102006036179B3 Tubular resonant microwave sensor for use in oscillator-circuit arrangement, has electrically conductive planar resonator in form of coil planarly arranged in plane transverse to longitudinal direction of housing and including opened end |
| 02/20/2008 | EP1889279A1 System and method for analyzing power flow in semiconductor plasma generation systems |
| 02/20/2008 | EP1200925B1 System and method for frequency compensation in an energy meter |
| 02/20/2008 | CN101126783A Automobile electrical signal test method and device |
| 02/20/2008 | CN101126776A Broad band and high resolution ratio millimeter wave and sub millimeter wave signal detecting method |
| 02/20/2008 | CN101126775A Broad band and high resolution ratio millimeter wave and sub millimeter wave signal detecting system |
| 02/19/2008 | US7333051 Methods and devices for determining the linearity of signals |
| 02/19/2008 | US7332975 Reference-less clock circuit |
| 02/19/2008 | US7332974 Method and apparatus for steady state analysis of a voltage controlled oscillator |
| 02/14/2008 | WO2008018588A1 Probability density function separator, probability density function separating method, program, tester, bit error rate measurement device, electronic device, and jitter transfer function measurement device |
| 02/14/2008 | WO2008018587A1 Noise separator, noise separating method, probability density function separator, probability density function separating method, tester, electronic device, program, and recording medium |
| 02/14/2008 | WO2008017988A2 Device and method for measuring the frequency of a signal coded modulated carrier signal |
| 02/14/2008 | US20080036506 Frequency switching method |
| 02/14/2008 | US20080036470 Inverse Characteristic Measuring Apparatus, Distortion Compensation Apparatus, Method, Program, and Recording Medium |
| 02/14/2008 | US20080035838 Electrical interconnection structure for diverse signals |
| 02/12/2008 | US7330799 Method and algorithm for using surface waves |
| 02/07/2008 | US20080033663 Spectrum searching method that uses non-chemical qualities of the measurement |
| 02/07/2008 | US20080030186 Method and system for measuring maximum operating frequency and corresponding duty cycle for an i/o cell |