| Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937) |
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| 01/05/2005 | EP1494036A1 Testing radiation efficiency of an antenna |
| 01/05/2005 | DE10392202T5 Testvorrichtung für einen LSI-Prüfling, Jitteranalysator und Phasendifferenzdetektor Test apparatus for an LSI device under test, jitter analyzer and phase difference detector |
| 01/05/2005 | CN2669492Y User device using low-power interference signal code power measurement |
| 01/05/2005 | CN1561562A 场探头 Field probe |
| 01/04/2005 | US6839032 Protable radio terminal testing apparatus using single self-complementary antenna |
| 12/30/2004 | US20040263147 Apparatus and method for identifying cable phase in a three-phase power distribution network |
| 12/30/2004 | DE10317773A1 Picking up/ processing interference fields/beams involves preparing antenna signals via signal line diodes with opposed blocking directions, 2 signal lines after diode output connected via capacitor |
| 12/29/2004 | EP1491904A1 Method and device for the identification of the direction of rotation of two phases in a system with three-phase voltages |
| 12/29/2004 | EP1490701A1 Method for determining a negative sequence component |
| 12/29/2004 | CN2667501Y Electromagnetic interference diagnosing system |
| 12/29/2004 | CN1559009A EMI analyzer capable of analyzing and reducing each electromagnetic interference component |
| 12/29/2004 | CN1182403C Piezoelectric ceramics transducer admittance circular graphic instruments |
| 12/28/2004 | US6836231 Signal generator |
| 12/28/2004 | US6835926 Mechanical sensors of electromagnetic fields |
| 12/23/2004 | WO2004111686A1 Registration of ligthning strike in a wind turbine |
| 12/23/2004 | US20040257064 Device for automatically detecting harmful electromagnetic wave |
| 12/23/2004 | US20040256553 Charge amount measurement method, shift value measurement method of charged beam, charge amount measuring device and shift value measuring device of charged beam |
| 12/22/2004 | EP1488244A1 Timing measurement system and method using a component-invariant vernier delay line |
| 12/22/2004 | CN1556418A Space electromagnetic environment moving type determination and analysis method |
| 12/22/2004 | CN1181352C Single phase power source measuring method and device for 2 type transformer rate |
| 12/22/2004 | CN1181351C UCOS 'phi' based electric power system pull-out dectection judging method |
| 12/21/2004 | US6833859 Method of locating radio frequency leaks in a CATV system |
| 12/21/2004 | US6833771 High efficiency amplifier with amplifier element, radio transmission device therewith and measuring device therefor |
| 12/21/2004 | US6833736 Pulse generating circuit |
| 12/21/2004 | US6833714 Inquiry method of the source which generates electromagnetic wave |
| 12/16/2004 | WO2004008159B1 Conductor tracing system |
| 12/16/2004 | WO2002041011A8 Apparatus and method for measuring the static charge of flowable solids |
| 12/16/2004 | US20040255213 Parameterized signal conditioning |
| 12/16/2004 | US20040254731 Systems and methods for spectral corrected lightning detection |
| 12/16/2004 | US20040251915 Apparatus for and method of synchronous rejection |
| 12/16/2004 | US20040251772 Coaxial flexible piezoelectric cable polarizer, polarizing method, defect detector, and defect detecting method |
| 12/15/2004 | EP1485721A2 Lightning detection and data acquisition system |
| 12/15/2004 | CN2663992Y An improved constant temperature reference source special for continental rise or on-board microwave radiometer system |
| 12/15/2004 | CN1180550C Quality reason measurement display |
| 12/14/2004 | US6832172 Apparatus and method for spectrum analysis-based serial data jitter measurement |
| 12/09/2004 | US20040246000 Method of detecting partial discharges and diagnostic system for electrical apparatus |
| 12/09/2004 | DE102004023435A1 Detection device for detecting the existence of a radio network in the vicinity of the device itself, has at least a receiver that operates at least one frequency range and a display for indicating a network presence |
| 12/08/2004 | EP1484618A2 Micro fluxgate sensor and method of manufacturing the same |
| 12/08/2004 | EP1484616A1 Method for detecting partial discharges and system for diagnozing an electrical apparatus |
| 12/08/2004 | EP1483852A1 Optical pulse analyzer |
| 12/08/2004 | CN1554020A Apparatus and method for measuring the static charge of flowable solids |
| 12/08/2004 | CN1553599A Desired wave/interference power ratio measuring circuit and desired wave/interference power ratio measuring method |
| 12/07/2004 | US6829295 Jitter measuring method and device |
| 12/07/2004 | US6828911 Lightning detection and prediction alarm device |
| 12/05/2004 | CA2469443A1 Method of detecting partial discharges and diagnostic system for electrical apparatus |
| 12/02/2004 | WO2004105301A1 Method of reducing the variance of a signal-to-noise ratio estimate for a signal with differential phase and coherent amplitude modulation |
| 12/02/2004 | US20040239337 Ultra-wide band pulse dispersion spectrometry method and apparatus providing multi-component composition analysis |
| 12/02/2004 | CA2527332A1 Method of reducing the variance of a signal-to-noise ratio estimate for a signal with differential phase and coherent amplitude modulation |
| 11/30/2004 | US6826411 Low power interference signal code power (ISCP) measurement |
| 11/30/2004 | US6825674 Microwave holographic measuring method and apparatus |
| 11/25/2004 | US20040235541 Human phantom apparatus, finger phantom apparatus, and apparatus for measuring characteristic of antenna using the same phantom apparatus |
| 11/25/2004 | US20040233785 Time delay measurement |
| 11/25/2004 | US20040233291 Wander gamut display |
| 11/25/2004 | US20040232776 Apparatus for measuring specific absorption rate of radio communication apparatus |
| 11/24/2004 | EP1031040B1 Device and method for converting a charge-flow into a frequency signal |
| 11/24/2004 | CN1549929A Diagnostics for piezoelectric sensor |
| 11/24/2004 | CN1548966A 粉体静电监测器 Electrostatic powder monitor |
| 11/24/2004 | CN1177218C Inspection method of piezoelectric ceramic device |
| 11/18/2004 | DE202004012370U1 Massenspektrometer Mass spectrometer |
| 11/17/2004 | EP1477819A1 Method of measuring electromagnetic field intensity and device therefor,method of measuring electromagnetic field intensity distribution and device thereof, method of measuring current/voltage distribution and divice thereof |
| 11/17/2004 | EP1476764A1 Method and system for sampling at least one antenna |
| 11/17/2004 | EP1250568B1 Variable reactance position detector |
| 11/17/2004 | EP1200845B1 Method and device for near-field measuring of non-controlled radiation |
| 11/16/2004 | US6819192 Jitter estimation for a phase locked loop |
| 11/16/2004 | US6819115 Fault location device and method |
| 11/11/2004 | US20040223577 Apparatus and methods for clock signal recovery and for jitter measurement relative to the recovered clock signal |
| 11/11/2004 | US20040222799 DC measurement method and system using sigma-delta modulation pattern |
| 11/11/2004 | DE10064183B4 Verfahren zum Untersuchen eines piezoelektrischen Keramikelements A method of inspecting a piezoelectric ceramic element |
| 11/04/2004 | WO2004095758A2 Signal classification methods for scanning receiver and other applications |
| 11/04/2004 | WO2004095609A2 Circuit and method to non-invasively detect the electrical potential of a cell or neuron |
| 11/04/2004 | DE10297381T5 Vorrichtung und Verfahren zur Taktschrägemessung Apparatus and method for Taktschrägemessung |
| 11/03/2004 | EP1471973A2 Method and apparatus for detecting static magnetic fields |
| 11/03/2004 | CN2653521Y Phase lost detection circuit for power supply grid |
| 11/03/2004 | CN1542572A 延时测量 Delay Measurement |
| 11/02/2004 | US6813646 Controlling electronics across an RF barrier using a serial interface bus |
| 11/02/2004 | US6812767 High speed source synchronous signaling for interfacing VLSI CMOS circuits to transmission lines |
| 10/28/2004 | WO2004092751A1 Pulse width measuring apparatus with auto-range setting function |
| 10/28/2004 | WO2004008159A3 Conductor tracing system |
| 10/28/2004 | US20040214595 Antenna gain specifying device and radio communication device |
| 10/28/2004 | DE10315372A1 Method of providing a measurement signal based on pulses of a sampled input signal such as to measure electromagnetic interference by forming groups of pulses and arranging them in given time intervals |
| 10/28/2004 | DE10043461B4 Mobile Anordnung und Verfahren zur großflächigen Charakterisierung von Strahlungsfeldern im Außenbereich Mobile Apparatus and method for large-scale characterization of radiation fields outside |
| 10/27/2004 | EP1004031A4 Electric arc monitoring systems |
| 10/27/2004 | CN1540875A Antenna gain determining device and wireless communication appliance |
| 10/26/2004 | US6810340 Electromagnetic disturbance analysis method and apparatus and semiconductor device manufacturing method using the method |
| 10/21/2004 | WO2004036231A3 Method and apparatus for determining inter-symbol interference for estimating data dependent jitter |
| 10/21/2004 | US20040207411 Method and device for evaluating charge potential |
| 10/21/2004 | US20040207410 Probe for measuring for measuring extremely small electrical fields produced by living cells with the nutrient medium baths |
| 10/20/2004 | EP1468300A1 Antenna measurement system |
| 10/20/2004 | CN1538182A Estimating method and device for hot-line electrical potential |
| 10/20/2004 | CN1172225C System capable of indicating integrated circuit chip clock offset |
| 10/19/2004 | US6807117 Semiconductor device having PLL-circuit |
| 10/19/2004 | US6806844 Calibration system for array antenna receiving apparatus |
| 10/19/2004 | US6806717 Spacing compensating electrostatic voltmeter |
| 10/19/2004 | US6806650 Structure and the method for measuring the spectral content of an electric field as a function of position inside a plasma |
| 10/14/2004 | WO2004088336A1 Electric potential measuring device using oscillating device, image forming apparatus, and electric potential measuring method |
| 10/14/2004 | WO2004088335A1 Micromechanical potential sensor |
| 10/14/2004 | WO2004088333A1 Electric potential measuring device and image forming apparatus |
| 10/14/2004 | US20040204877 Apparatus for and method of calculating electromagnetic field intensity, and computer program product |
| 10/13/2004 | EP1466183A1 Antenna array for the measurement of complex electromagnetic fields |
| 10/13/2004 | EP1244921B1 Time domain reflectometer display method |