| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
|---|
| 02/06/2008 | EP1885080A1 Apparatus and method for synchronizing signal analyzer |
| 02/06/2008 | EP1884876A2 Systems and methods for time domain to frequency domain conversion using frequency shifting |
| 02/06/2008 | CN201017453Y Circuit apparatus of electric network harmonic wireless detector |
| 02/06/2008 | CN101119094A Method for regulating frequency domain based nonlinear power system stabilizer parameter |
| 02/05/2008 | US7328114 Methods and systems for measuring a rate of change of frequency |
| 02/05/2008 | CA2472018C Pulse output function for programmable logic controller |
| 01/31/2008 | US20080024113 System of phenon spectroscopy |
| 01/30/2008 | CN101114029A Excess optical carrier grating |
| 01/30/2008 | CN101113995A Base wave and harmonic detecting method based on Nuttall window double peak interpolation FFT |
| 01/30/2008 | CN101113994A Pulse wave electric voltage frequency testing system |
| 01/29/2008 | US7323883 Phase measurement device, method, program, and recording medium |
| 01/24/2008 | WO2008011563A2 Systems and methods for alarm filtering and management within a real-time data acquisition and monitoring environment |
| 01/24/2008 | WO2008011332A2 Systems and methods for real-time advanced visualization for predicting the health, reliability and performance of an electrical power system |
| 01/24/2008 | US20080018322 Phase Measurement Device, Method , Program, And Recording Medium |
| 01/23/2008 | EP1881489A1 Mixed audio separation apparatus |
| 01/23/2008 | EP0801745B1 Measuring method for determining the amplitude and phase of the fundamental tone of an alternating voltage |
| 01/23/2008 | CN101109777A Frequency spectrum analyzer for surplus photocarrier |
| 01/23/2008 | CN100363935C Frequency self-tracing dimension-variation stochastic resonance fault diagnosis system |
| 01/17/2008 | US20080015800 Method and system for determining frequency |
| 01/17/2008 | US20080012651 Semiconductor integrated circuit device and test method therefor |
| 01/17/2008 | US20080012575 Systems and techniques for radio frequency noise cancellation |
| 01/17/2008 | US20080012549 Circuit and method for on-chip jitter measurement |
| 01/10/2008 | WO2008006116A2 Systems and methods for real-time dynamic simulation of uninterruptible power supply solutions and their control logic systems |
| 01/10/2008 | WO2008005525A2 High speed spectrum analyzer |
| 01/10/2008 | US20080010032 Yield estimation method for lsi |
| 01/10/2008 | US20080010019 High speed spectrum analyzer |
| 01/09/2008 | CN201004079Y A frequency measurement and frequency accompanying circuit |
| 01/09/2008 | CN101103276A Dynamic cut-off frequency varying filter |
| 01/09/2008 | CN101101309A Phase frequency discriminator |
| 01/08/2008 | US7317999 Method of mapping linearly spaced spectrum points to logarithmically spaced frequency and a measuring apparatus using the method |
| 01/08/2008 | US7317765 Signal observation system |
| 01/08/2008 | US7317309 Wideband signal analyzing apparatus, wideband period jitter analyzing apparatus, and wideband skew analyzing apparatus |
| 01/03/2008 | WO2008003033A2 Automatic real-time optimization and intelligent control of electrical power distribution and transmission systems |
| 01/03/2008 | WO2008000990A2 Method for instantaneously determining rates of distortion of signals on an ac electrical network, and associated device |
| 01/03/2008 | DE102006028655A1 Signal`s e.g. test signal, frequency measuring device, has frequency determining device for determining frequency of signal on basis of direct current voltage proportion, and storage device for storing value of voltage proportion |
| 01/03/2008 | CA2655740A1 Method for instantaneously determining rates of distortion of signals on an ac electrical network, and associated device |
| 01/02/2008 | EP1532738B1 Method and device for detecting period length fluctuations of periodic signals |
| 01/01/2008 | US7315218 Method and apparatus to center the frequency of a voltage-controlled oscillator |
| 01/01/2008 | US7315172 Method for measuring spectral noise densities beyond instrument capability with deterministic confidence levels |
| 01/01/2008 | US7314842 Substituted barium titanate and barium strontium titanate ferroelectric compositions |
| 12/27/2007 | US20070296397 Directional coupler for accurate power detection |
| 12/27/2007 | DE19851307B4 System und Verfahren zum Ermitteln mindestens einer physikalischen Größe System and method for determining at least one physical quantity |
| 12/26/2007 | CN200997181Y High-frequency AC parameter inspecter |
| 12/26/2007 | CN101094487A Method and system for detecting boundary frequency of WCDMA signal |
| 12/25/2007 | US7313492 Method and device for increasing the dynamic range and measuring accuracy of a measuring device for spectrum and/or network analysis |
| 12/25/2007 | US7313491 Method and apparatus for high-precision measurement of frequency |
| 12/20/2007 | US20070294044 Baud Rate Detection |
| 12/19/2007 | EP1868001A1 Bandwith and frequency offset estimation method |
| 12/19/2007 | EP1405089B1 Distortion detector |
| 12/13/2007 | WO2007141311A1 System for extraction and analysis of significant radioelectric signals |
| 12/13/2007 | WO2007056673A3 Wide-bandwidth spectrum analysis of transient signals using a real-time spectrum analyzer |
| 12/13/2007 | US20070285080 Methods and Apparatus for Testing Delay Locked Loops and Clock Skew |
| 12/13/2007 | US20070285079 Systems and methods for performing automatic real-time harmonics analyses for use in real-time power analytics of an electrical power distribution system |
| 12/12/2007 | CN200989920Y Electric energy quality tester signal dispensable circuit |
| 12/11/2007 | US7307480 Low latency frequency switching |
| 12/06/2007 | US20070280032 Built-in system and method for testing integrated circuit timing parameters |
| 12/06/2007 | US20070279039 Rotation phase angle measuring device, and control-protecting devices of electric power system using the same |
| 12/05/2007 | EP1862808A1 Method for measuring the resonance frequency of a battery |
| 12/04/2007 | US7304469 Adaptive method used to overcome channel to channel isolation |
| 12/04/2007 | US7304468 Method and apparatus for detecting minute oscillation and WiBro repeater having the same |
| 11/29/2007 | WO2007136977A2 Methods and apparatus for testing delay locked loops and clock skew |
| 11/29/2007 | WO2007136386A2 Droplet-based on-chip sample preparation for mass spectrometry |
| 11/29/2007 | US20070276616 Identifying a Reference Point in a Signal |
| 11/29/2007 | DE102006023914A1 Messgerät zur Vorschau-Darstellung von mehreren zeitlich veränderlichen elektrischen Signalen Meter to the preview display of multiple time-varying electrical signals |
| 11/27/2007 | US7302353 Method for radiation spectroscopy using seeded localized averaging (“SLA”) and channel-address recycling |
| 11/27/2007 | US7301408 Integrated circuit with low dielectric loss packaging material |
| 11/27/2007 | US7301406 Method and system for calibrating input voltage of voltage controlled oscillator and digital interface used for calibrating input voltage |
| 11/22/2007 | WO2007132660A1 Frequency component measuring device |
| 11/22/2007 | WO2007132030A1 Method and device for complex analysis of optical spectra |
| 11/22/2007 | WO2007084200A3 Search time reduction with increased accuracy during resonant device interrogation |
| 11/22/2007 | DE102006022948A1 Microwave-Doppler signal`s moment-frequency estimating method, involves comparing inphase signal with quadrature signal by comparator, and controlling timer for measuring periodic time and scanning of analog value by trigger-signal |
| 11/21/2007 | CN200979574Y A piezoelectric quartz detector based on a complex programmable logic device technology |
| 11/20/2007 | US7299370 Method and apparatus for improved reliability and reduced power in a processor by automatic voltage control during processor idle states |
| 11/20/2007 | US7298130 Signal detector |
| 11/20/2007 | US7298129 Time arbitrary signal power statistics measurement device and method |
| 11/20/2007 | US7298128 Method of detecting RF powder delivered to a load and complex impedance of the load |
| 11/15/2007 | WO2006076357A3 Method of detecting rf power delivered to a load and complex impedance of the load |
| 11/15/2007 | DE102006019759A1 Oscillator`s two-gate phase noises measuring method, involves canceling reference signal of generator by phase difference and supplying combined signal with noise portions of test objects to evaluate spectrum analyzer |
| 11/15/2007 | DE102006018919A1 Frequency tuning method for spectrum analyzer, involves continuing frequency tuning after interruption with frequency, and reducing frequency by frequency supply, which corresponds to setting time of resolution filter |
| 11/13/2007 | US7295939 Hardware implementation of the pseudo-spectral time-domain method |
| 11/08/2007 | WO2007081368A3 Low power, wavelet-based spike detector |
| 11/08/2007 | US20070257709 Frequency comparator |
| 11/08/2007 | US20070257660 Swept-frequency measurements with improved speed using synthetic instruments |
| 11/07/2007 | EP1330690A4 Separation of periodic and non-periodic signal components |
| 11/07/2007 | CN200972494Y High precision frequency-measurement phase-measurement circuit |
| 11/06/2007 | US7292948 Magnetic position and orientation measurement system with eddy current distortion compensation |
| 11/06/2007 | US7292109 Auto-calibrated time base apparatus, systems, and methods |
| 11/06/2007 | US7292070 Programmable PPM detector |
| 11/06/2007 | US7291999 System and method for diagnosing a controller in a limited rotation motor system |
| 11/01/2007 | WO2007123055A1 Testing apparatus, testing method, jitter filter circuit and jitter filtering method |
| 11/01/2007 | US20070252602 Test circuit and test method |
| 10/31/2007 | DE102006019486A1 Asynchronous signal magnitudes conversion device for use in e.g. spectrum analyzer, has detectors generating respective enabling signals, where synchronous signal with highest data rate results from enabling signals |
| 10/25/2007 | WO2007119488A1 Frequency measuring apparatus and frequency measuring method |
| 10/25/2007 | CA2648953A1 Systems and methods for performing automatic real-time harmonics analyses for use in real-time power analytics of an electrical power distribution system |
| 10/24/2007 | EP1847838A1 Method and apparatus for frequency estimation |
| 10/24/2007 | EP1847837A1 Method and apparatus for frequency estimation |
| 10/24/2007 | EP1846983A2 Sensor for detecting hgh frequency signals |
| 10/24/2007 | CN101061652A Channel detecting device, and tuner testing device having the channel detecting device |
| 10/24/2007 | CN101060684A Reverse interference positioning method, system, wireless signal acquiring entity and device |
| 10/24/2007 | CN101059547A Diagnostic signal processor |