| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 08/02/2006 | EP1686511A2 Broad bandwidth, high impedance transponder for electronic identification system |
| 08/02/2006 | EP1685650A1 Spectrum analyzer having a resolution filter that can be adjusted via a phase-variation parameter |
| 08/01/2006 | US7085613 System for monitoring audio content in a video broadcast |
| 08/01/2006 | US7084615 Performance measurement of device dedicated to phase locked loop using second order system approximation |
| 07/27/2006 | US20060167641 Terahertz detection using a multi-mode signal |
| 07/27/2006 | US20060164067 Pll loop filter capacitor test circuit and method for on chip testing of analog leakage of a circuit |
| 07/27/2006 | US20060164066 Apparatus and method for measuring transmission delay time of a signal propagation path between printed circuit boards |
| 07/27/2006 | DE10233618B4 Netzwerkanalysator unter Verwendung von zeitlich aufeinanderfolgenden Messungen Network analyzer using temporally consecutive measurements |
| 07/26/2006 | EP1684443A1 Hand-held tester and method for local area network cabling |
| 07/20/2006 | WO2006051499A3 Actual-ray and image-ray distinction in frequency converters for spectrum analysers |
| 07/20/2006 | US20060158174 Triggered narrow-band method for making pulsed-rf networking measurements |
| 07/20/2006 | US20060158173 Gait waveform feature extracting method and individual identification system |
| 07/19/2006 | CN2798103Y Network intelligent electric energy quantity monitor |
| 07/19/2006 | CN2798102Y Power line higher harmonic analyzing meter |
| 07/19/2006 | CN1804642A Middle-frequency completely digital frequency spectrum |
| 07/18/2006 | US7079964 Method for determining the frequency of the current ripple in the armature current of a commutated DC motor |
| 07/18/2006 | US7078894 Polishing device using eddy current sensor |
| 07/18/2006 | US7078887 PLL loop filter capacitor test circuit and method for on chip testing of analog leakage of a circuit |
| 07/13/2006 | US20060155491 Frequency determination |
| 07/11/2006 | US7076383 Method of resonance spectroscopy for the analysis of statistical properties of samples |
| 07/11/2006 | US7076382 Method of measuring the effective directivity and/or residual system port impedance match of a system-calibrated vector network analyser |
| 07/11/2006 | US7076380 Method and circuit for real time frequency analysis of a non-stationary signal |
| 07/11/2006 | US7075324 Method and device for testing semiconductor laser |
| 07/11/2006 | US7075285 Delay locked loop circuit and method for testing the operability of the circuit |
| 07/11/2006 | CA2309271C System for surveillance of spectral signals |
| 07/06/2006 | US20060145683 Transmission measuring system |
| 07/06/2006 | US20060145682 Phase detector and method of phase detection |
| 07/06/2006 | US20060145681 Auto-adjustment of RC cells within a circuit |
| 07/06/2006 | DE10319899B4 Verfahren und Frequenzvergleichseinrichtung zum Erzeugen eines Kontrollsignals, das eine Frequenzabweichung anzeigt The method and frequency comparison means for generating a control signal indicating a frequency deviation |
| 07/06/2006 | CA2592017A1 Sensor for sensing an electric field |
| 07/05/2006 | CN1799033A A network analyzing method and a network analyzing apparatus |
| 07/05/2006 | CN1797011A Method and system for detecting and analyzing waveform in monocycle |
| 07/05/2006 | CN1262337C Method for analyzing mass spectra |
| 07/04/2006 | US7071675 Band distribution inspecting device and band distribution inspecting method |
| 07/04/2006 | CA2341941C Method and apparatus for measuring harmonic load-pull for frequency multiplication |
| 06/29/2006 | US20060139023 Delay-locked loop and a method of testing a delay-locked loop |
| 06/29/2006 | US20060137454 Resonance frequency sensing method, resonance frequncy selecting method, and resonance frequency sensor |
| 06/28/2006 | EP1675267A1 Periodic electrical signal frequency monitoring systems and methods |
| 06/28/2006 | CN1793988A Periodic electrical signal frequency monitoring systems and methods |
| 06/28/2006 | CN1261896C Frequency analysis method and apparatus, and spectrum spread demodulation method and apparatus |
| 06/27/2006 | US7069524 Method and device for analyzing a network of conductors |
| 06/27/2006 | US7068113 Burst mode clock and data recovery frequency calibration |
| 06/22/2006 | WO2006065677A2 Dynamic cut-off frequency varying filter |
| 06/22/2006 | US20060136158 Self-calibration of mass spectra using robust statistical methods |
| 06/22/2006 | US20060136157 Dynamic cut-off frequency varying filter |
| 06/22/2006 | US20060132116 Waveform analyzer |
| 06/22/2006 | CA2590716A1 Dynamic cut-off frequency varying filter |
| 06/21/2006 | EP1672376A1 Real-time RF/IF signature trigger |
| 06/21/2006 | CN1260628C Apparatus and method for waveform phase and period detection |
| 06/21/2006 | CN1260422C System and method for automatic detecting and controlling power supply frequency of washing machine |
| 06/20/2006 | US7065474 Frequency rectification system: apparatus and method |
| 06/20/2006 | US7065469 Manufacturing apparatus and method for predicting life of a manufacturing apparatus which uses a rotary machine |
| 06/20/2006 | US7065459 Interrogation method for passive sensor monitoring system |
| 06/20/2006 | US7064619 Method and apparatus for restarting a GPS-based timing system without a GPS signal |
| 06/20/2006 | US7064557 Calibration circuit and method for filter bandwidth which is parasitic capacitance sensitive or insensitive |
| 06/20/2006 | CA2356406C Waveform measuring method and apparatus |
| 06/15/2006 | WO2006061703A1 Method and apparatus for determining the resonant frequency of surface acoustic wave resonators |
| 06/15/2006 | WO2006034763A3 Method and device for performing spectrum analysis of a wanted signal or noise signal |
| 06/15/2006 | US20060129410 Frequency estimation |
| 06/15/2006 | US20060129389 Spectrum modeling |
| 06/15/2006 | US20060125622 Self testing ground fault circuit interrupter (GFCI) |
| 06/15/2006 | US20060125468 Method and device for graphically illustrating the filling of a cigarette |
| 06/14/2006 | EP1669764A1 Modulation domain trigger |
| 06/14/2006 | EP1669729A1 A phase-diverse coherent optical spectrum analyzer |
| 06/14/2006 | DE102004049421A1 Measurement arrangement e.g. for intermodulation analysis, has nonlinear electronic element or amplifier and active source and load pulling both in high frequency range source |
| 06/14/2006 | CN2788201Y Electromagnetic compatible pre-scanning analyzer |
| 06/13/2006 | US7062394 Performance characterization using effective processor frequency |
| 06/13/2006 | US7061224 Test circuit for delay lock loops |
| 06/13/2006 | US7061223 PLL manufacturing test apparatus |
| 06/13/2006 | US7061222 Automated testing of frequency converter device |
| 06/13/2006 | US7061221 Reduced complexity transmission line and waveguide fault tester |
| 06/13/2006 | US7061220 Passive radio frequency power spectrum analyzer |
| 06/13/2006 | US7061219 Independent measurement of complicated transfer functions |
| 06/07/2006 | CN1782719A Method and device for measuring AC electricity |
| 06/06/2006 | US7058548 High bandwidth real-time oscilloscope |
| 06/06/2006 | US7057419 Phase synchronization circuit |
| 06/01/2006 | WO2006056024A1 Modelling a phenomenon that has spectral data |
| 06/01/2006 | WO2005086630A3 Reduced complexity transmission line and waveguide fault tester |
| 06/01/2006 | WO2005069883A3 Method and apparatus for transmission line and waveguide testing |
| 06/01/2006 | US20060116834 Test method and test apparatus for digital-analog converter |
| 06/01/2006 | DE102005002207A1 Verfahren und System zur Ermittlung der Amplitude und/oder Phase des Ausgangssignals eines Übertragungsgliedes in Abhängigkeit der Amplitude des Eingangsignals Method and system for determining the amplitude and / or phase of the output signal of a transmission element dependent upon the amplitude of the input signal |
| 06/01/2006 | DE102004049420A1 Meßanordnung zur Memory-Analyse Measuring arrangement for Memory Analysis |
| 06/01/2006 | CA2589176A1 Modelling a phenomenon that has spectral data |
| 05/31/2006 | EP1660892A1 Dual signal rf power level detector |
| 05/31/2006 | EP1604215A4 Generation and measurement of timing delays by digital phase error compensation |
| 05/31/2006 | CN1258077C Intelligent frequency system with steel string sensor |
| 05/30/2006 | US7054773 Dynamic model-based compensated tuning of a tunable device |
| 05/26/2006 | WO2006054390A1 Channel detecting device, and tuner testing device having the channel detecting device |
| 05/26/2006 | WO2005069943A3 Method and apparatus for calibrating a frequency domain reflectometer |
| 05/26/2006 | CA2589423A1 System and method for lossless compression of already compressed files |
| 05/23/2006 | US7049831 Fluid quality control using broad spectrum impedance spectroscopy |
| 05/23/2006 | US7049805 Radio frequency power measurement |
| 05/23/2006 | CA2354939C Waveform measuring apparatus |
| 05/18/2006 | WO2006051498A1 Image cancellation in frequency converters for spectrum analysers |
| 05/18/2006 | WO2006050704A1 Spectrum analyzer and frequency level measurement method |
| 05/17/2006 | EP1657558A1 Image cancellation in frequency converters for spectrum analysers |
| 05/16/2006 | US7046094 Method and ring oscillator circuit for measuring circuit delays over a wide operating range |
| 05/16/2006 | US7046001 Frequency measuring device, polishing device using the same and eddy current sensor |
| 05/11/2006 | DE102004054261A1 Spektrumanalysator und Verfahren zum Messen von Frequenzpegeln Spectrum analyzer and method for measuring frequency levels |
| 05/11/2006 | CA2586103A1 Communicating with an implanted wireless sensor |