| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 10/24/2007 | CN101059541A Microelectronic machinery microwave frequency detector and its preparation method |
| 10/23/2007 | US7286948 Method for determining plasma characteristics |
| 10/23/2007 | US7286020 Techniques for monitoring and replacing circuits to maintain high performance |
| 10/23/2007 | US7285962 Method and apparatus for evaluating susceptibility to common mode noise in a computer system |
| 10/23/2007 | US7285945 Fixed filter assembly for proof of performance testing on CATV systems |
| 10/18/2007 | WO2007117618A2 System and method for voltage noise and jitter measurement using time-resolved emission |
| 10/18/2007 | WO2007085853A3 Signal analyser |
| 10/17/2007 | CN101057152A Image cancellation in frequency converters for spectrum analysers |
| 10/17/2007 | CN101057151A Actual-ray and image-ray distinction in frequency converters for spectrum analysers |
| 10/17/2007 | CN101057150A Method and apparatus for measuring the frequency of a received signal |
| 10/17/2007 | CN101055299A Impact load electric energy metering method |
| 10/17/2007 | CN100343681C Self adaptive phasor calculating method |
| 10/16/2007 | US7282963 Wide-band circuit coupled through a transmission line |
| 10/16/2007 | US7282903 Longitudinal balance measuring bridge circuit |
| 10/11/2007 | US20070236206 System and method for voltage noise and jitter measurement using time-resolved emission |
| 10/09/2007 | US7280069 Range-finding radar apparatus with high-resolution pulse-width calculation unit |
| 10/04/2007 | US20070233409 Spectrum analyzer with cascadable trace math functions |
| 10/04/2007 | US20070229056 Local oscillator diversity system for reducing spectrum analyzer synthesis spurs |
| 10/04/2007 | US20070229055 Digital oscilloscope and method for displaying signal |
| 10/03/2007 | CN101047366A Amplitude decibel number deciding method and system of digital filter |
| 10/03/2007 | CN101046488A CW pulse narrow band tracking filter and its tracking filter method |
| 10/03/2007 | CN101046483A Polar coordinate converting process for estimating signal background |
| 10/02/2007 | US7277807 Method for processing a set of spectra, particularly NMR spectra |
| 10/02/2007 | US7276892 Resonator based spectrum analyzer and method |
| 09/27/2007 | WO2007108493A1 Probability density function isolating device, probability density function isolating method, test device, bit error ratio measuring device, electronic device, and program |
| 09/27/2007 | WO2007108492A1 Probability density function isolating device, probability density function isolating method, noise isolating device, noise isolating method, test device, test method, calculation device, calculation method, program, and recording medium |
| 09/27/2007 | US20070225927 Method and an apparatus for measuring noise |
| 09/27/2007 | US20070222529 Frequency calibration for a monolithic clock generator and timing/frequency reference |
| 09/27/2007 | US20070222528 Multi-terminal harmonic oscillator integrated circuit with frequency calibration and frequency configuration |
| 09/27/2007 | US20070222431 Spectrum Analyzer Having a Resolution Filter that Can Be Adjusted Via Phase-Variation Parameter |
| 09/27/2007 | DE102006005595A1 Verfahren und Anordnung zur Messung von Störemissionen in Realzeit Method and apparatus for measurement of spurious emissions in real time |
| 09/27/2007 | DE102005021247B4 Eigenschaftsmessverfahren für Hochfrequenzschaltung, Kalibriermuster und Kalibriervorrichtung Property Measuring method for high frequency circuit calibration pattern and calibration |
| 09/26/2007 | EP1836716A2 Method of detecting rf power delivered to a load and complex impedance of the load |
| 09/26/2007 | EP1836600A1 Modelling a phenomenon that has spectral data |
| 09/26/2007 | CN200953036Y Moving military communication frequency spectral testing system |
| 09/26/2007 | CN200953033Y Portable loop remote metering measuring check-up meter |
| 09/26/2007 | CN101042416A 光电外差探测电路 Optical heterodyne detection circuit |
| 09/25/2007 | US7275003 Harmonic diagnosing method for electric facility |
| 09/25/2007 | US7274186 Temperature compensated and self-calibrated current sensor |
| 09/25/2007 | US7274185 Methods of generating internal clock signals from external clock signals and of measuring the frequency of external clock signals and related frequency measuring circuits and semiconductor memory devices |
| 09/25/2007 | CA2373144C High frequency measuring circuit with inherent noise reduction for resonating chemical sensors |
| 09/20/2007 | US20070216394 Measure the mutual phase relationship of a set of spectral components generated by a signal generator |
| 09/19/2007 | CN101040324A Mixed sound separating device |
| 09/19/2007 | CN101040190A Non-linear frequency and phase measurement scheme |
| 09/19/2007 | CN101038311A Radio monitoring apparatus and method |
| 09/19/2007 | CN101038310A Digital detecting system of resonant transducer sensitive structure frequency characteristic |
| 09/19/2007 | CN101038309A Device and method for adjusting amplitude characteristic |
| 09/18/2007 | US7272189 Method to determine the presence of multi-carrier signals |
| 09/18/2007 | US7272078 Efficient clock calibration in electronic equipment |
| 09/18/2007 | US7271577 Testing loop impedance in an RCCB electrical test circuit |
| 09/18/2007 | US7271576 Hand held antenna/network impedance analyzer |
| 09/18/2007 | US7271575 Oscilloscope based return loss analyzer |
| 09/13/2007 | WO2007103894A2 System and method for fiber array spectral translator based polymorph screening |
| 09/13/2007 | US20070210786 Communicating with an Implanted Wireless Sensor |
| 09/12/2007 | EP1831704A2 Sensor for sensing an electric field |
| 09/12/2007 | CN101034947A Mobile phone thimble-type RF calibration clamp |
| 09/12/2007 | CN101034115A Resonant sensor control system with intermittent operation mode |
| 09/11/2007 | US7269523 Method and apparatus for radiation spectroscopy using seeded localized averaging (“SLA”) |
| 09/11/2007 | US7268531 Apparatus for improving stability and lock time for synchronous circuits |
| 09/11/2007 | US7268530 Method to measure the mutual phase relationship of a set of spectral components generated by a signal generator |
| 09/06/2007 | US20070208522 Apparatus and method for detecting and analyzing spectral components in predetermined frequency bands within a signal, frequency filter, and related computer-readable media |
| 09/06/2007 | US20070205837 Monolithic clock generator and timing/frequency reference |
| 09/05/2007 | EP1828788A2 Dynamic cut-off frequency varying filter |
| 09/05/2007 | CN101029913A Excitation signal generator for improved accuracy of model-based testing |
| 09/04/2007 | US7266474 Ring oscillator structure and method of separating random and systematic tolerance values |
| 09/04/2007 | US7266465 Wideband digital IFM receiver with frequency confirmation |
| 09/04/2007 | US7265637 Startup/yank circuit for self-biased phase-locked loops |
| 09/04/2007 | US7265633 Open loop bandwidth test architecture and method for phase locked loop (PLL) |
| 09/04/2007 | US7265557 Method and circuit for measuring characteristic parameters of intermodulation distortion |
| 08/30/2007 | DE102006022056A1 Device for determining spectral ratio between two signals with two spectrums, which depends on biological size, has computer for computation of wave ratio between spectral value of former spectrum |
| 08/30/2007 | DE10116886B4 Verfahren zum Optimieren des Frequenzaufbereitungszuges eines Hochfrequenz-Überlagerungsempfängers A method for optimizing the frequency processing train of high-frequency heterodyne receiver |
| 08/29/2007 | EP1826577A1 Attaching measurement data to an area map |
| 08/29/2007 | CN200939436Y Small crystal chips resonance parameter auto selector |
| 08/29/2007 | CN101026781A Quasi full-synchronous high-precision rapid frequency measuring device and method |
| 08/23/2007 | US20070194776 Real-time device characterization and analysis |
| 08/23/2007 | US20070194629 Frequency sensor and semiconductor device |
| 08/22/2007 | CN101021555A Frequency marker calibrating system based on GPS frequency standard source |
| 08/21/2007 | US7259595 Circuit and method for detecting frequency of clock signal and latency signal generation circuit of semiconductor memory device with the circuit |
| 08/21/2007 | US7259569 Calibration circuit and method thereof |
| 08/16/2007 | WO2007090730A1 Frequency measuring broadband digital receiver |
| 08/16/2007 | WO2007090564A1 Network analyst comprising a switchable measuring bridge |
| 08/16/2007 | DE102007001394A1 Gerät zum Messen des Frequenzfehlers von CDMA-Signalen An apparatus for measuring the frequency error of CDMA signals |
| 08/16/2007 | DE102006025403B3 The analysis of a non-linear signal processing system, especially for a hearing aid, takes the modulation spectra from the original /processed signals for a quality value from the difference between an alternating part |
| 08/15/2007 | EP1817593A2 Communicating with an implanted wireless sensor |
| 08/15/2007 | CN101017602A The circuit device of the power grid harmonious radio detector and its working method |
| 08/14/2007 | US7257222 Ring voltage generation circuit and method for generating a ring voltage |
| 08/09/2007 | US20070185671 Excitation signal generator for improved accuracy of model-based testing |
| 08/09/2007 | US20070185670 Methods of Measuring Frequencies Including Charging Electrical Circuits |
| 08/08/2007 | CN2932398Y Multichannel harmonic monitoring and analyzing device |
| 08/08/2007 | CN2932397Y Electric harmonic and interharmonic monitoring device |
| 08/07/2007 | US7254502 Method and device for detecting period length fluctuations of periodic signals |
| 08/07/2007 | US7254501 Spectrum searching method that uses non-chemical qualities of the measurement |
| 08/07/2007 | US7254500 Monitoring and representing complex signals |
| 08/07/2007 | US7253642 Method for sensing an electric field |
| 08/07/2007 | US7253640 Arc fault detector and method for locating an arc fault |
| 08/07/2007 | CA2268507C Improvements in or relating to the application of power-factor correction in ac power systems |
| 08/02/2007 | WO2007085853A2 Signal analyser |
| 08/02/2007 | US20070179727 Method and apparatus for removing quantization effects in a quantized signal |
| 08/01/2007 | EP1814248A1 Channel detecting device, and tuner testing device having the channel detecting device |
| 07/31/2007 | US7250825 Method and apparatus for calibration of a low frequency oscillator in a processor based system |