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7595646 |
System and method for information handling system peripheral EMC test
Electromagnetic compatibility of an information handling system and peripheral for achieving defined electromagnetic interference constraints is tested through a test adapter that interfaces with...
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7554339 |
Electromagnetic testing of an enclosure or cavity using a discrete frequency stir method
The “discrete frequency stir” (DFS) method provides improved mode stir testing of electromagnetic characteristics of an enclosure/cavity. Adequate sampling of the electric field inside the...
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7466142 |
Anechoic chamber for direct observation of the electromagnetic behavior of a tool
An apparatus for studying the electromagnetic behavior of an electromagnetic wave-emitting or electromagnetic wave-receiving tool is provided. An anechoic chamber is configured to receive the tool...
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7459916 |
Electromagnetic shielding defect monitoring system and method for using the same
An embodiment disclosed herein is directed to an electromagnetic shielding defect monitoring system that includes a transmit system adapted to transmit a first electromagnetic field toward a first...
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7414414 |
Spatially distributed guarded impedance
A guarded sense impedance for use in a measurement instrument includes a sense impedance adapted to have a spatially distributed electrical potential and at least one guard structure adapted to...
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7403025 |
Membrane probing system
A membrane probing assembly includes a probe card with conductors supported thereon, wherein the conductors include at least a signal conductor located between a pair of spaced apart guard...
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7336230 |
Method for measuring electromagnetic radiation pattern and gain of radiator using term waveguide
A method for measuring electromagnetic radiation pattern and gain of radiator using TEM waveguide is disclosed. The method includes the steps of: a) measuring powers of output port of a transverse...
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7332902 |
Micro sensor for electrochemically monitoring residue in micro channels
The present invention provides a micro sensor for monitoring the cleaning and drying processes for very high aspect ratio micro channels in dielectric films oriented parallel to the fluid-solid...
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7323884 |
RF test chamber
A system for testing radio frequency (RF) communications of a device capable of such communications is provided. The system includes a chamber for isolating the device from RF interference, an...
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7317317 |
Shielded micro sensor and method for electrochemically monitoring residue in micro features
The micro sensor is fabricated with a guard that shields the electrodes from the surrounding environment, thereby reducing loss of measurement signal through the parasitic capacitances to the...
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7292057 |
Probe station thermal chuck with shielding for capacitive current
To reduce noise in measurements obtained by probing a device supported on surface of a thermal chuck in a probe station, a conductive member is arranged to intercept current coupling the thermal...
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7288940 |
Galvanically isolated signal conditioning system
A galvanically isolated signal conditioning system includes a signal conditioning circuit on an integrated circuit chip; a flying capacitor; and a galvanically isolating MEMS switching device on an...
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7259570 |
Magnetic signal measurement apparatus
As the length of a cylinder of a magnetically shielding apparatus is shorter, the amount of magnetism of a component perpendicular to an axis of the cylinder which enters the opening portion of the...
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7242176 |
Systems and methods for evaluating electromagnetic interference
Systems and methods for evaluating electromagnetic interference that may be employed, for among other things, to evaluate electronic system immunity to radiated electromagnetic fields and/or to...
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7235986 |
Capacitive position sensing system with resonant amplification
At least one exemplary embodiment of the present invention includes a capacitive sensing system, comprising a sensing conductor coupleable to a grounded target by a gap capacitance C d , said...
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7224172 |
Device and method for shielding electromagnetic emissions of equipment service vehicle
A system for shielding an engine component of an equipment service vehicle including an enclosure, wherein the enclosure includes a surface having a plurality of apertures formed in the surface of...
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7173434 |
Method for determining the RF shielding effectiveness of a shielding structure
Determining the RF shielding effectiveness of a shielding structure including measuring RF isolation between a first and a second element of a directional coupler and providing a first measurement...
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7161357 |
Apparatus for measuring read range between RFID tag and reader
Provided is an apparatus for measuring a read range between a tag and a reader, which includes an electromagnetic anechoic chamber formed by connecting at least one unit cell in a row, the unit...
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7148711 |
Membrane probing system
A membrane probing assembly includes a probe card with conductors supported thereon, wherein the conductors include at least a signal conductor located between a pair of spaced apart guard...
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7145348 |
Sensor device with coated electric wire shielding
A coated electric wire is wound around a detection circuit in a planar manner for the purpose of electrostatic shield. This winding is performed, for example, spirally in a single layer. In the...
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7138809 |
Electrical capacitance proximity sensor
An electrical capacitance proximity sensor with high detector sensitivity has an insulating substrate, a detector electrode and an earth electrode formed in a fixed pattern on one face of the...
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7107020 |
Mobile phone positioning apparatus for radiation testing
A mobile phone positioning apparatus provides a rotational movement and switching functionality among three planes (H, E 1 and E 2 ) as requested by a radiation test. The positioning apparatus...
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7065655 |
Secure enclosure for key exchange
A method is disclosed comprising placing a first device in an enclosure, placing a second device in the enclosure, sealing the enclosure, and after sealing the enclosure, causing the first device...
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7002359 |
Apparatus and method for measuring EMI level of electronic device
An apparatus and a method for measuring an electric magnetic interference (EMI) level of a radio frequency device is disclosed. The apparatus for measuring a level of electric magnetic interference...
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6987392 |
Electromagnetic protection test and surveillance system
A test architecture performs calibration and site verification testing of the effectiveness of a radiation shielding structure within which electronic equipment is housed. An external subsystem is...
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6937029 |
Method for detection of a shielding fault in a multiwire cable
This invention relates to a method for detection of a shielding fault in a multiwire cable forming part of a communication network, during functional operation of the said network, the said cable (...
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6930496 |
Range resistors for AC-DC transfer measurements
A range resistor, for deployment with a low voltage AC measuring instrument as a voltage range multiplying attenuator, provides increased accuracy in the measurement of high AC voltages at...
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6885348 |
Test chamber for a low band antenna array
A Test Chamber for testing a frequency response of a Low Band Antenna Array output by injecting an RF test signal into the interior of the test chamber. The test chamber comprises a rectangular...
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6882947 |
Discrete fourier transform (DFT) leakage removal
A technique for measuring spectral components, such as noise and distortion, of a non-coherently sampled test signal containing at least one tone of known frequency includes modeling the spectral...
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6842013 |
Method for making transmission measurements in a dual-chambered anechoic chamber using spatial averaging
A method for making transmission measurements in a dual-chambered anechoic chamber used in conjunction with spatial averaging. At selected transmitter antenna positions, measurement are taken at...
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6795030 |
Electromagnetic compatibility testing device
A testing device for measuring radiation, immunity and electromagnetic characteristics of an object to be tested ( 1 ), includes a conductive structure ( 53 ) enclosing a testing volume where the...
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6784670 |
Dual chambered anechoic chamber
A dual-chambered anechoic chamber used in conjunction with spatial averaging for making transmission measurements of electromagnetic devices. The anechoic chamber includes a first tapered chamber...
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6774641 |
Printed circuit board design support apparatus, method, and program
In a printed circuit board design support apparatus for supporting design of a printed circuit board by calculating a radiation amount of electromagnetic radiation caused by an interconnection on...
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6766261 |
Method and device generating data input to an electromagnetic field intensity calculating device
A method, which generates data input to a device calculating the intensity of an electromagnetic field emitted from an electric circuit device, extracts surface data of a metal cabinet from the...
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6686748 |
Procedure arrangement and sensor for testing of the H-F tightness of the junction between two adjacent parts
Arrangement to test HF tightness of a junction between two adjacent parts including HF generator ( 4 ), HF line that guides the signal over junction ( 1 ), measuring device ( 10 ) as well as a...
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6616337 |
Noise-reducing machine component
A machine component, which may be a race of an antifriction bearing, contains pockets, the borders of which is defined by side-by-side reflecting surfaces which have free boundaries and intersect...
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6611150 |
Leakage detector for use in combination with a signal level meter
A leakage detector includes a receiver front end having an input for connection with an antenna and a signal path including circuitry for passing a signal from the input without amplification; an...
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6529020 |
Methods and systems for automated emissions measuring
A system for measuring electromagnetic emissions from electronic devices includes an semi-anechoic chamber, a computer, an EMI receiver, and a multi-device controller. The chamber houses devices...
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6509742 |
Electromagnetic noise measurement apparatus, electromagnetic noise measurement method and recording medium
The object of the present invention is to provide an electromagnetic noise measurement apparatus, electromagnetic noise measurement method and recording medium capable of preventing erroneous...
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6437748 |
Tapered anechoic chamber
The present invention includes tapered anechoic chambers and chamber systems. This invention also includes machines or electronic apparatus using these aspects of the invention. The present...
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6426813 |
Telemetry system and method for EMI susceptibility testing of motor vehicles
A data transmission system for external use with a controller area network is installed on a motor vehicle undergoing high intensity electromagnetic interference susceptibility testing. The data...
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6411102 |
Apparatus for testing various structural parameters of an electro-magnetic radiation barrier
The design of an electro-magnetic radiation suppression shield and cooling housing for a computer, server or other electronic device having a computer processor may be greatly enhanced and...
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6400160 |
Method and apparatus for mutual impedance coupling for component level EMI measurements
A method and apparatus for determining EMI compliance provides a conductor that is mutually impedance coupled to an integrated circuit on a semiconductor package. The conductor is attached to a lid...
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6373260 |
Single cable, single point, stimulus and response probing system and method
A single cable, single point stimulus and response probing system allows the measurement of both low impedance stimulus measurements and high impedance response measurements using a single probe...
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6289290 |
Method for estimating radiated emission level from an EUT at an arbitrary position on the turn table at OATS
A method for evaluating radiation electric fields using output port powers of GTEM cell to obtain correlation between GTEM cell and Open Area Test Site(hereinafter, called OATS) in order to...
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6255830 |
Method of testing shielding effectiveness and electromagnetic field generator for use in testing shielding effectiveness
An electromagnetic field generator is provided which consists of a regulated self contained voltage supply connected to a high frequency clock which drives one or more printed circuit board...
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6242925 |
EMI susceptibility testing apparatus and method
Non-destructive EMI susceptibility testing involves near-field injection of very high levels of instantaneous energy and low average power through localized injection of signals of very high field...
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6194907 |
Prober and electric evaluation method of semiconductor device
A prober can make an appropriate evaluation in a microcurrent region. A wafer (9) is disposed on a chuck (8) in a casing (1). In the upper surface of the chuck (8), an electrode (8a) is formed...
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6188227 |
Bifilar wound isolation network
A test system having a bifilar wound isolation network disposed in between a device under test (DUT) and a device under test support system for providing a high isolation impedance to common mode...
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6177804 |
Common-mode voltage probe for predicting EMI from unshielded differential-pair cables
According to one embodiment of the present invention, a voltage probe for measuring common-mode (CM) voltage of a device under test (DUT) having differential input/output (I/O) signals is...
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