| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 10/27/2010 | CN101871904A Gas detecting device, gas detecting system and manufacturing method of gas detecting device |
| 10/26/2010 | US7821302 Frequency monitor |
| 10/21/2010 | US20100268497 Portable system with function of measurement and measurement method thereby |
| 10/21/2010 | US20100264902 Detection and estimation of radio frequency variations |
| 10/21/2010 | DE102010016238A1 Amplitudenwahrscheinlichkeitsverteilung Amplitude probability distribution |
| 10/21/2010 | DE102007031952B4 Niederfrequenzwobbelgenerator Niederfrequenzwobbelgenerator |
| 10/20/2010 | CN101867381A Method for realizing down conversion of radio frequency spectrometer by narrow-band local oscillation and switch filtering |
| 10/20/2010 | CN101865955A Method for measuring intrinsic Q value of film bulk acoustic resonator |
| 10/20/2010 | CN101865951A Anti-interference frequency measuring method |
| 10/20/2010 | CN101865946A Alternating current parameter testing system and method of programmable digital integrated circuit |
| 10/19/2010 | US7816904 Modulation signature trigger |
| 10/14/2010 | US20100259245 Frequency characteristics measuring device |
| 10/13/2010 | CN201607486U 数字式频率特性测试仪 Digital frequency characteristics tester |
| 10/13/2010 | CN1744435B Frequency rectification system |
| 10/13/2010 | CN101860223A Transformer and switching circuit therein |
| 10/13/2010 | CN101858939A Method and device for detecting harmonic signal |
| 10/13/2010 | CN101858938A Instantaneous frequency measurement method based on adaptive filtration theory |
| 10/12/2010 | US7812678 Digital calibration techniques for segmented capacitor arrays |
| 10/12/2010 | US7812594 Optical device and method of controlling the same |
| 10/12/2010 | US7812592 Method of monitoring a photovoltaic generator |
| 10/07/2010 | DE112008003254T5 Frequenzcharakteristik-Messvorrichtung Frequency characteristic measuring apparatus |
| 10/07/2010 | DE102006019759B4 Verfahren zur Zweitor-Messung des Phasenrauschens Method for two-port measurement of phase noise |
| 10/06/2010 | EP2237054A1 Method of detecting repetitive frequency of measured signal, sampling apparatus using the same, and waveform observation system |
| 10/06/2010 | CN201600414U 一种用于便携式维修辅助设备的频率计模块 Frequency meter module for a portable maintenance aid equipment |
| 10/06/2010 | CN201600409U 风电测控装置 Wind power and control devices |
| 10/06/2010 | CN101852864A Method for processing mass seismic data by using surface consistent statistical spectrum analysis technology |
| 10/06/2010 | CN101852826A Harmonic analysis method for power system and device thereof |
| 10/05/2010 | CA2347284C Apparatus providing on-line indication of frequency of an ac electric power system |
| 09/30/2010 | WO2010111334A1 Method and device for improved detection and analysis of partial discharge activity in and around high voltage electrical equipment |
| 09/30/2010 | US20100250170 Interrogation method for passive wireless sensor interrogation system |
| 09/30/2010 | US20100250169 Method and apparatus for evaluating data representing a plurality of excitations of a plurality of sensors |
| 09/30/2010 | US20100249881 Channel Assessment And Selection For Wireless Communication Between Medical Devices |
| 09/30/2010 | US20100244811 High bandwidth oscilloscope for digitizing an analog signal having a bandwidth greater than the bandwidth of digitizing components of the oscilloscope |
| 09/30/2010 | CA2756666A1 Under frequency/under voltage detection in a demand response unit |
| 09/29/2010 | CN101368987B Power system mesomeric state harmonic wave and/or inter-harmonic wave measuring method |
| 09/28/2010 | US7804371 Systems, modules, chips, circuits and methods with delay trim value updates on power-up |
| 09/28/2010 | US7804369 Integrated frequency calibration architecture |
| 09/28/2010 | US7804289 Testing device including low-pass filter with automatically switching function |
| 09/23/2010 | WO2010081725A3 Method and network analyser for measuring group runtime in a measuring object |
| 09/23/2010 | US20100237954 Systems and methods for self testing a voltage controlled oscillator |
| 09/23/2010 | US20100237851 system for complex impedance measurement |
| 09/23/2010 | DE102009001684A1 Method for calibrating evaluation circuit for determining resonant frequency of electrical resonant circuit, involves interrupting feedback branch of evaluation circuit |
| 09/22/2010 | CN201589814U Measuring device for output frequency increment of frequency output type sensor |
| 09/21/2010 | CA2298833C Method and apparatus for noise floor estimation |
| 09/16/2010 | WO2010103354A1 Time domain electromagnetic interference monitoring method and system |
| 09/16/2010 | US20100235124 Occupancy measurement and triggering in frequency domain bitmaps |
| 09/16/2010 | US20100235113 Digital processor sensor loop detector and method |
| 09/16/2010 | US20100231265 Method for detecting minimum operational frequency |
| 09/16/2010 | US20100231194 Method and device for monitoring plasma discharges |
| 09/16/2010 | CA2755850A1 Time domain electromagnetic interference monitoring method and system |
| 09/15/2010 | EP2228660A2 Frequency domain bitmap triggering using color, density and correlation based triggering |
| 09/15/2010 | EP2228659A2 Occupancy measurement and triggering in frequency domain bitmaps |
| 09/15/2010 | CN101833594A Method for predicting and debugging EMI characteristics in IC system and related machine-readable medium |
| 09/15/2010 | CN101833062A Circuit checking method based on circuit checking instrument |
| 09/15/2010 | CN101833035A Linear frequency-modulated parameter estimating method and implementing device thereof |
| 09/15/2010 | CN101833034A Benchmark test system and method influenced by RFID (Radio Frequency Identification Device) label medium |
| 09/15/2010 | CN101241151B Real time frequency measurement method based on amplitude linear change model |
| 09/14/2010 | US7795928 Circuit for matching semiconductor device behavior |
| 09/14/2010 | US7795858 Methods and apparatus for computing and using a spectral map for performing nonlinear calibration of a signal path |
| 09/09/2010 | US20100228509 Spectral analysis |
| 09/09/2010 | US20100225524 Spectral analysis and fmcw automotive radar utilizing the same |
| 09/09/2010 | US20100225357 Real time clock monitoring method and system |
| 09/09/2010 | US20100225336 Object proximity detector and object position detector |
| 09/09/2010 | US20100225303 Method and device for multichannel multifrequency analysis of an object |
| 09/09/2010 | US20100225301 Device, method, program, and recording medium for error factor determination, and output correction device and reflection coefficient measurement device provided with the device |
| 09/09/2010 | DE102009040775A1 Frequency converter for use in mobile communication system during waveform analysis and spectrum analysis of broadband analog signal, has playback part regenerating signal of preset frequency area as digital signal of frequency domain |
| 09/09/2010 | DE102009011822A1 Testing a chip/smart card, for faults, uses a separate data exchange link to the test instrument for the test program |
| 09/08/2010 | EP2226640A1 Spectral analysis |
| 09/08/2010 | EP2226639A1 Spectral analysis and FMCW automotive radar utilizing the same |
| 09/08/2010 | CN201576065U Multipurpose electric energy quality monitoring instrument |
| 09/08/2010 | CN201576044U Three-phase voltage regulation testbed |
| 09/08/2010 | CN101825660A High-efficiency measurement method for sinusoidal signal frequency in undersampling and implementation device |
| 09/08/2010 | CN101344556B Method for enlarging effective dynamic range in electromagnetic compatibility test |
| 09/08/2010 | CN101103276B Dynamic cut-off frequency varying filter |
| 09/07/2010 | US7793235 Method and circuit for matching semiconductor device behavior |
| 09/07/2010 | US7791347 Battery assembly with enhanced properties |
| 09/07/2010 | US7791329 Vector/signal analyzer equalization apparatus and method |
| 09/02/2010 | WO2010098460A1 Phase determining device and frequency determining device |
| 09/02/2010 | US20100223019 Measuring Filling Level by Means of Evaluating an Echo Curve |
| 09/02/2010 | US20100219808 System for intelligent automated response to line frequency and voltage disturbances by a central control point communication with a plurality of load control devices |
| 09/02/2010 | DE10346379B4 Verfahren zum Bestimmen des Frequenzgangs eines elektrooptischen Bauelements A method for determining the frequency response of an electro-optical device |
| 09/01/2010 | CN201569692U Automobile instrument comprehensive checking device |
| 09/01/2010 | CN201569691U Electric power quality monitoring and synchronous phasor monitoring device of power system |
| 09/01/2010 | CN101819231A High-resolution frequency measurement method with continuous counting interval marking |
| 09/01/2010 | CN101393234B Waveform auto-measuring system and method |
| 08/26/2010 | WO2010096770A2 Noise suppression techniques in high precision long-term frequency/timing measurements |
| 08/26/2010 | US20100213924 Measuring apparatus, testing apparatus and measuring method |
| 08/26/2010 | US20100213923 Process for measuring peak values and power of an audio frequency signal |
| 08/26/2010 | DE102009031673A1 Method for determining clock speed of electrical signals for e.g. pulse frequency-oriented sports activity, involves supplementing maximum value if necessary, and determining clock speed of piece of music from period values |
| 08/25/2010 | CN201562012U Fixing device for testing built-in antenna |
| 08/25/2010 | CN201562011U Embedded electric energy meter with harmonic wave measurement function |
| 08/25/2010 | CN101813748A Method for detecting noise of integrated circuit substrate |
| 08/25/2010 | CN101403774B Harmonic wave analysis method based on non-synchronous sampling |
| 08/25/2010 | CN101266268B Electromagnetic interference data access system and method |
| 08/24/2010 | US7783456 Wave detection device, method, program, and recording medium |
| 08/24/2010 | US7782066 Sensor, method for sensing, measuring device, method for measuring, filter component, method for adapting a transfer behavior of a filter component, actuator system and method for controlling an actuator using a sensor |
| 08/19/2010 | WO2010093461A1 An integrated circuit frequency generator |
| 08/19/2010 | US20100207602 Resonant sensors and methods of use thereof for the determination of analytes |
| 08/18/2010 | CN201556579U Circuit breaker with function of frequency measurement |
| 08/18/2010 | CN201555899U Testing device of tuning fork crystal sheet laser automatic frequency-modulation machine |