| Patents for G01R 25 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents (2,594) |
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| 02/19/2004 | DE10233604A1 Sensor signal acquisition method in which sensor measurements are captured as phase shifts or phase delay times by use of parametric amplification technology within sensor networks or bridge circuits |
| 02/19/2004 | DE10233603A1 Signal processing method for generation of two high frequency signals of very close frequency and the same phase angle for use in non-optical interferometric and phase-angle measurements |
| 02/18/2004 | CN1476538A Method and apparatus for estimating phase of signal |
| 02/17/2004 | US6693416 Method and device for measuring the phase shift between a periodic signal and an output signal at an output of an electronic component |
| 02/12/2004 | DE10233596A1 Phase angle measurement method for two high frequency sinusoidal signals, with applications in measurements of physical values, wherein a beat signal is generated by interference between the two digitized signals |
| 01/28/2004 | CN1136459C Method and apparatus for detecting out-of-step in electric power system |
| 01/14/2004 | EP1045967B1 Phase recognition device |
| 01/13/2004 | US6677741 Capacitive test point voltage and phasing detector |
| 12/24/2003 | WO2003107023A1 Method and apparatus for testing and characterizing a circuit comprising a phase-locked loop |
| 12/03/2003 | EP1367402A1 Method and arrangement for phase measurement of a modulated RF signal |
| 12/02/2003 | US6657394 Reflection coefficient phase detector |
| 11/13/2003 | WO2003094408A2 Fault tolerant apparatus and method for determining a revolution rate of a gear |
| 11/06/2003 | US20030208329 Fault tolerant apparatus and method for determining a revolution rate of a gear |
| 11/04/2003 | US6642700 System, method, field unit, reference unit and computer program product for phase tracking of electrical conductors |
| 10/30/2003 | US20030201786 PLL semiconductor device with testability, and method and apparatus for testing same |
| 10/21/2003 | US6636570 Phase detection apparatus for compensating phase rotation error |
| 10/15/2003 | CN2580450Y Power parameter complex detector |
| 10/02/2003 | US20030184275 System, method, field unit, reference unit and computer program product for phase tracking of electrical conductors |
| 09/30/2003 | US6628276 System for high precision signal phase difference measurement |
| 09/09/2003 | US6617883 Dual differential input comparators with integrated phase detector |
| 08/21/2003 | US20030158678 Charged particle measuring apparatus |
| 08/20/2003 | EP1336111A1 Method and apparatus for estimating the phase of a signal |
| 08/20/2003 | CN1118998C Method, apparatus and system for operating digital relevant conversion to inputted signal |
| 08/05/2003 | CA2344425C System and method for frequency compensation in an energy meter |
| 07/30/2003 | EP1038380B1 Phase digitizer for radio communications |
| 07/24/2003 | US20030137290 Phase detector |
| 07/22/2003 | US6597162 PLL semiconductor device with testability, and method and apparatus for testing same |
| 07/02/2003 | EP1324073A2 Charged particle measuring apparatus |
| 06/19/2003 | WO2003050796A1 Scaling persistence data with interpolation |
| 06/18/2003 | CN1424587A Electric power system phase angle measuring method based on contour circuit |
| 06/12/2003 | WO2003048792A1 Method and apparatus for detecting loss of synchronism in power system |
| 06/12/2003 | US20030107581 Scaling persistence data with interpolation |
| 06/11/2003 | EP0715723B1 Measuring burst/sinusoidal waveform time span |
| 06/05/2003 | WO2003046585A1 Phase detector capable of detecting an accumulated value of phase displacement at a high speed and frequency stability measurement apparatus for arbitrary nominal frequency using the same |
| 05/27/2003 | US6571184 System and method for determining the decoupling capacitors for power distribution systems with a frequency-dependent target impedance |
| 05/02/2003 | EP1306835A1 Method and circuit to digitally measure the phase of a sinusoidal signal |
| 04/17/2003 | US20030072361 Method and circuit of digital measurement of the phase of a sinusoidal signal |
| 04/08/2003 | US6545549 Remotely controllable phase locked loop clock circuit |
| 04/01/2003 | US6542835 Data collection methods and apparatus |
| 03/27/2003 | US20030057965 Apparatus and method for measuring a phase delay characteristic |
| 03/25/2003 | US6538517 Frequency phase detector for differentiating frequencies having small phase differences |
| 03/25/2003 | CA2233530C Pipelined phase detector for clock recovery systems |
| 03/12/2003 | CN1402013A Method for pure electrical measuring no-load potential phasor of synchronous electric generator |
| 03/04/2003 | US6528982 Jitter detector, phase difference detector and jitter detecting method |
| 02/13/2003 | US20030030428 Measurement of quantities of electric line |
| 02/11/2003 | US6518806 Self-compensating phase detector |
| 01/08/2003 | CN1390306A 相位检测器 Phase detector |
| 12/12/2002 | DE10126298A1 Verfahren und Vorrichtung zur Messung der Phasenverschiebung zwischen einem periodischen Signal und einem Ausgangssignal an einem Ausgang eines elektronischen Bauelements Method and apparatus for measuring the phase shift between a periodic signal and an output signal at an output of an electronic component |
| 12/05/2002 | US20020180415 Method and device for measuring the phase shift between a periodic signal and an output signal at an output of an electronic component |
| 12/04/2002 | CN1382995A Digital measuring method of frequency and phase |
| 11/21/2002 | US20020171411 Reflection coefficient phase detector |
| 11/20/2002 | CN1380730A 反射系数相位检测器 Reflection coefficient phase detector |
| 11/12/2002 | US6480035 Phase detector with minimized phase detection error |
| 11/07/2002 | US20020165678 Data collection methods and apparatus |
| 10/17/2002 | DE10112939A1 Verfahren zur Kontrolle des Status eines internen Speichers (Buffers) und Kontrolleinrichtung dafür A method for controlling the status of internal memory (buffer) and control means therefor |
| 10/16/2002 | EP1249689A2 Phase difference measuring apparatus and mass flowmeter thereof |
| 10/09/2002 | EP1248361A2 Device to measure relection coefficient |
| 10/03/2002 | WO2002077628A1 Data collection methods and apparatus |
| 09/24/2002 | CA2117400C Device for the vector measurement of a ultra-high frequency signals of the same angular frequency of the six port junction type |
| 09/17/2002 | US6452377 Phase meter using a permuter and matched filter |
| 09/12/2002 | US20020128788 Method for controlling the status of an internal memory (buffer) and control device for same |
| 09/10/2002 | US6448757 Precise digital frequency detection |
| 08/27/2002 | US6441601 Phase meter using a permuter |
| 08/08/2002 | US20020107647 System and method for determining the decoupling capacitors for power distribution systems with a frequency-dependent target impedance |
| 08/07/2002 | EP1229309A2 Phase difference measuring apparatus and mass flowmeter thereof |
| 07/31/2002 | EP1226447A2 High resolution skew detection apparatus and method |
| 07/03/2002 | EP1218761A1 Phase detector |
| 06/20/2002 | US20020074989 Phase detector |
| 06/20/2002 | US20020074988 Capacitive test point voltage and phasing detector |
| 06/20/2002 | DE10038880C2 Phasendetektor für einen Phasenregelkreis Phase detector for a phase-locked loop |
| 06/18/2002 | US6407599 Method and apparatus for determining a digital phase shift in a signal |
| 06/06/2002 | US20020067771 Digital phase discrimination based on frequency sampling |
| 06/04/2002 | US6400129 Apparatus for and method of detecting a delay fault in a phase-locked loop circuit |
| 05/30/2002 | WO2002042782A1 Method and apparatus for estimating the phase of a signal |
| 05/21/2002 | US6392494 Frequency comparator and clock regenerating device using the same |
| 05/16/2002 | US20020057113 Phase detector |
| 05/15/2002 | EP1047946A4 Self-compensating phase detector |
| 05/14/2002 | US6388533 Programmable ring oscillator |
| 05/02/2002 | EP1200925A1 System and method for frequency compensation in an energy meter |
| 04/23/2002 | US6377081 Phase detection circuit |
| 03/21/2002 | US20020035721 Clock modes for a debug port with on the fly clock switching |
| 03/21/2002 | US20020034272 Method and apparatus for estimating the frequency and/or phase of a digital signal |
| 03/13/2002 | CN1080943C Protection system for power receiving station |
| 03/12/2002 | US6356126 Methods and devices for testing the operation of counters used in phase-locked loops |
| 03/07/2002 | DE10039666A1 Digital signal phase and frequency estimation method involves reducing sampling rate of summed phase values, delaying phase values, such that resultant phase and frequency are constant over preset intervals |
| 03/07/2002 | DE10038880A1 Phase detector for phase control loop especially for use in a mobile phone base station in which the phase relationship of the digital input signals can be determined independently of the start condition of the phase detector |
| 02/21/2002 | US20020021776 Jitter detecting apparatus and phase locked loop using the detected jitter |
| 02/21/2002 | US20020021470 Linear half-rate phase detector and clock and data recovery circuit |
| 02/21/2002 | DE10039421A1 Phase detector providing phase difference between binary input signals uses 2 Exclusive-OR elements receiving both input signals with their output signals subtracted to provide regulating voltage |
| 02/13/2002 | CN1335681A Jitter tester and lock phase ring using with tested flutter |
| 01/24/2002 | US20020008591 Programmable ring oscillator |
| 01/23/2002 | EP1174721A2 Jitter detecting apparatus and phase locked loop using the detected jitter |
| 01/22/2002 | US6340900 Phase detector with minimized phase detection error |
| 01/17/2002 | WO2001033240A3 High resolution skew detection apparatus and method |
| 01/17/2002 | US20020007466 Wander generator having arbitrary TDEV mask characteristic setting apparatus |
| 01/17/2002 | US20020007264 Debug bi-phase export and data recovery |
| 01/17/2002 | US20020006451 Debug output loosely coupled with processor block |
| 01/03/2002 | US20020000800 Precise digital frequency detection |
| 01/02/2002 | EP1167985A2 Wander generator having arbitrary TDEV mask characteristic setting apparatus |
| 11/29/2001 | US20010045868 Frequency comparator and clock regenerating device using the same |