| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 07/31/2007 | US7250772 Method and apparatus for characterizing a signal path carrying an operational signal |
| 07/31/2007 | US7249511 Method of detecting resonant frequency, method of selecting resonance frequency, and device for detecting resonant frequency sensor |
| 07/26/2007 | WO2007084463A2 Spectrometric data cleansing |
| 07/26/2007 | US20070173217 Digital qp detecting apparatus, spectrum analyzer having the same, and digital qp detecting method |
| 07/25/2007 | CN1328586C Electric energy quality monitoring, recording and analyzing system |
| 07/25/2007 | CN101006348A Power quality monitory |
| 07/24/2007 | US7248126 Temperature correction device and voltage control oscillation device |
| 07/24/2007 | US7248124 Frequency calibration for a monolithic clock generator and timing/frequency reference |
| 07/24/2007 | US7248033 Vector network analyzer with independently tuned receivers characterizes frequency translation devices |
| 07/19/2007 | DE102006062370A1 Ankunftsrichtung-Abschätzungsvorrichtung Direction of arrival estimation apparatus |
| 07/18/2007 | CN2924543Y Pre-amplification circuit |
| 07/17/2007 | US7245117 Communicating with implanted wireless sensor |
| 07/12/2007 | WO2007079321A2 Apparatus for radially expanding and plastically deforming a tubular member |
| 07/12/2007 | WO2007034992A3 An apparatus and method for multi-phase digital sampling |
| 07/11/2007 | EP1250606A4 Magnetic digital signal coupler monitor |
| 07/11/2007 | CN2921848Y Logic electric level/digital frequency test pen |
| 07/10/2007 | US7243036 System and method for calibrating the clock frequency of a clock generator unit over a data line |
| 07/05/2007 | US20070152652 Use of a Preselection Filter Bank and Switched Local Oscillator Counter in an Instrumentation Receiver |
| 07/04/2007 | EP1802984A1 Non-linear frequency and phase measurement scheme |
| 07/04/2007 | EP1420256B1 Method and device for determining sideband ratio of superconduction mixer using comb generator |
| 07/03/2007 | US7239243 RFID tag imager |
| 06/27/2007 | CN1987489A AC electricity measurer based on microcomputer |
| 06/27/2007 | CN1987376A Burning flame signal processing system |
| 06/26/2007 | US7236901 Digital broadband frequency measurement |
| 06/26/2007 | US7235979 Apparatus and method for measuring loop insertion loss single-endedly |
| 06/21/2007 | DE102006042009A1 Yig-Filter-Abstimmsystem YIG filter tuning system |
| 06/14/2007 | US20070136014 System and method for automated baseline correction for raman spectra |
| 06/14/2007 | US20070136013 Methods and systems for measuring a rate of change of requency |
| 06/14/2007 | US20070132761 Signal measuring device |
| 06/14/2007 | US20070132442 Filter tuning |
| 06/13/2007 | EP1795908A2 Detection and Estimation of Radio Frequency Variations |
| 06/13/2007 | EP1794602A2 Method and device for performing spectrum analysis of a wanted signal or noise signal |
| 06/13/2007 | EP1794601A1 Method and device for analysing the spectrum in several frequency ranges having different resolutions |
| 06/12/2007 | CA2356403C Waveform measuring apparatus |
| 06/07/2007 | WO2007047524A3 Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter |
| 06/07/2007 | US20070126412 Waveform measuring apparatus and method thereof |
| 06/06/2007 | CN1975688A Transmission delay and dithering measure |
| 06/06/2007 | CN1975454A Electromagnetic coefficient tester for electromagnetic material and testing method thereof |
| 06/06/2007 | CN1320364C Method and apparatus for zero-mixing spectrum analysis |
| 06/05/2007 | US7228245 Method for determining the fundamental oscillation frequency in an optical fiber and an application of a tensile force thus measured |
| 06/05/2007 | US7227919 Data sampler for digital frequency/phase determination |
| 06/05/2007 | CA2328398C Detection of damage to engine parts |
| 05/31/2007 | US20070121485 System and method for adjusting a pid controller in a limited rotation motor system |
| 05/30/2007 | EP1789810A1 Method and apparatus for measuring the frequency of a received signal |
| 05/29/2007 | US7224940 Frequency modulating device of an integrated circuit and a method of measuring modulated frequency |
| 05/24/2007 | WO2005111858A3 Systems and methods for the accurate and rapid estimation of time-varying signal components |
| 05/23/2007 | EP1788399A2 High speed spectrum analyser with concurrent high resolution |
| 05/23/2007 | CN2903997Y 闪灯集成电路测试仪 Flash IC tester |
| 05/23/2007 | CN2903995Y Low sampling rate high-precision frequency counter |
| 05/23/2007 | CN1968019A All-digital phase-lock loop used for precision testing of city electricity |
| 05/23/2007 | CN1317800C Comprehesive power filter harmonic current predicting method based on weighted first order local thereory |
| 05/22/2007 | US7222055 High bandwidth real-time oscilloscope |
| 05/22/2007 | US7221167 Signal distortion measurement and assessment system and method |
| 05/22/2007 | US7221141 Switched measuring system and method for measuring radiant signals |
| 05/22/2007 | US7221139 Multi-channel radiometer imaging system |
| 05/16/2007 | EP1499902B1 Device for measuring intermodulation distortion |
| 05/16/2007 | CN1963543A Improved method and apparatus for measuring stability of frequency of time domain signal |
| 05/15/2007 | US7219037 High bandwidth oscilloscope |
| 05/15/2007 | US7218122 Power disturbance generator |
| 05/15/2007 | US7218091 Integrated CMOS spectrum analyzer for on-chip diagnostics using digital autocorrelation of coarsely quantized signals |
| 05/15/2007 | US7218090 Passive radio frequency power spectrum analyzer |
| 05/10/2007 | WO2006104770B1 Circuit and method for monitoring the status of a clock signal |
| 05/10/2007 | US20070105502 Narrowband noise mitigation in location-determining signal processing |
| 05/10/2007 | US20070103144 Calibration pattern and calibration jig |
| 05/10/2007 | US20070103140 Time arbitrary signal power statistics measurement device and method |
| 05/09/2007 | EP1783500A2 Time arbitrary signal power statistics measurement device and methods |
| 05/09/2007 | CN1961483A Analog/digital converting method and analog/digital converting apparatus |
| 05/09/2007 | CN1959420A Time arbitrary signal power statistics measurement device and methods |
| 05/08/2007 | US7216279 Testing with high speed pulse generator |
| 05/03/2007 | US20070096715 Communicating with an Implanted Wireless Sensor |
| 05/03/2007 | US20070096714 Electricians phase tester |
| 05/03/2007 | DE112005001355T5 Vorrichtung zum Analysieren von Breitbandsignalen, Breitband-Periodenjitter und Breitbandversatz An apparatus for analyzing wideband signals, wideband period and wideband skew |
| 05/02/2007 | EP1585443B1 T-wave alternans train spotter |
| 05/02/2007 | CN1314215C Serial shaking measuring method based on frequency spectrum analysis |
| 05/01/2007 | US7212934 String resistance detector |
| 05/01/2007 | US7212933 Absolutely and uniformly convergent iterative approach to inverse scattering with an infinite radius of convergence |
| 05/01/2007 | US7212014 Stud sensor with floating head |
| 04/26/2007 | WO2007047524A2 Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter |
| 04/26/2007 | WO2007016601A3 On-die heating circuit and control loop for rapid heating of the die |
| 04/26/2007 | US20070089500 System and method for diagnosing a controller in a limited rotation motor system |
| 04/26/2007 | DE202006019601U1 Telekommunikationssignalmeßvorrichtung Telekommunikationssignalmeßvorrichtung |
| 04/26/2007 | DE112004002887T5 Verfahren zur A/D-Umwandlung und A/D-Umwandlungsvorrichtung A process for the A / D-conversion and A / D conversion means |
| 04/26/2007 | DE102006041962A1 Frequenzdetektionsschaltung, Halbleitervorrichtung und Frequenzdetektionsverfahren Frequency detection circuit, semiconductor device, and frequency detection method |
| 04/26/2007 | CA2626245A1 Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter |
| 04/24/2007 | US7208955 Power relay or switch contact tester |
| 04/24/2007 | US7208934 Apparatus for identification of locations of a circuit within an integrated circuit having low speed performance |
| 04/19/2007 | WO2007030423A3 Carbon nanotube resonators |
| 04/19/2007 | DE102005047901A1 Apparatus for identifying users in an electrical network i.e. electricity consumers based on a generated model |
| 04/18/2007 | EP1671144A4 System and method for characterizing a sample by low-frequency spectra |
| 04/17/2007 | US7206707 Wideband digital IFM receiver |
| 04/17/2007 | US7205853 Method to configure phase-locked loop dividing ratio |
| 04/12/2007 | DE10106801B4 Schwingungsmessverfahren und Frequenzmessvorrichtung Vibration measurement methods and frequency measuring device |
| 04/11/2007 | EP1355727A4 Method for analyzing mass spectra |
| 04/11/2007 | EP1337845A4 Method for analyzing mass spectra |
| 04/11/2007 | CN1945962A Self anti-interference exciting control system based on double DSP and its working method |
| 04/10/2007 | US7202656 Methods and structure for improved high-speed TDF testing using on-chip PLL |
| 04/10/2007 | US7202479 Method for assigning a pulse response to one of a plurality of pulse types with different decay times and device for carrying out said method |
| 04/05/2007 | WO2007038143A2 Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment |
| 04/05/2007 | US20070075701 Supply voltage characteristic measurement |
| 04/05/2007 | DE102006043134A1 Method for measuring frequency of signal under test involves measuring time of prescribed phase of signal under test and calculating slope of approximate line related to prescribed phase and measured time or reciprocal of slope as frequency |