|
Match
|
Document |
Document Title |
|
|
7548820 |
Detecting a failure condition in a system using three-dimensional telemetric impulsional response surfaces
One embodiment of the present invention provides a system that facilitates high-sensitivity detection of an anomaly in telemetry data from an electronic system using a telemetric impulsional...
|
|
|
7545150 |
Differential vector network analyzer
A measurement and correction method provides for a complete full correction of a true-mode system using only the single ended error matrix developed for 4 port correction of single ended...
|
|
|
7304482 |
Characterization of the nonlinearities of a display device by adaptive bisection with continuous user refinement
A method for measuring and characterizing the nonlinearities of a display device by adaptive bisection using human perception for measurement. This method makes no assumptions about a display...
|
|
|
7304469 |
Adaptive method used to overcome channel to channel isolation
Selectable attenuators are used in the reference and test paths of a VNA, with attenuation automatically inserted or deleted when the Device Under Test (DUT) attenuation reaches predetermined...
|
|
|
7176695 |
Method and apparatus for measuring transfer characteristics of a semiconductor device
A method and apparatus is provided for measuring alternating current (AC) and direct current (DC) characteristics of a plurality of semiconductor devices. A ring oscillator generates pulses to...
|
|
|
7170297 |
Transmission response measurement system and method of using time gating
A method and a measurement system determine a transmission response of a device under test (DUT). The method includes measuring a reflection response from a first port of the DUT while a known...
|
|
|
7098670 |
Method and system of characterizing a device under test
A system and method of characterizing a device under test wherein a signal is injected into the device under test, the response to the injected signal is measured to determine the impedance of the...
|
|
|
7084615 |
Performance measurement of device dedicated to phase locked loop using second order system approximation
A method, system and program product to measure performance of a device dedicated to a phase locked loop (PLL). A resistor-inductor-capacitor (RLC) model is produced to simulate the PLL. The RLC...
|
|
|
7061219 |
Independent measurement of complicated transfer functions
A first test signal from a test signal source is provided to a spectrum analyzer to produce first measurement data. The test signal source is expressed by a first transfer function G(w) and the...
|
|
|
7007252 |
Method and apparatus for characterizing the propagation of noise through a cell in an integrated circuit
One embodiment of the invention provides a system that characterizes cells within an integrated circuit. During operation, the system obtains a number of input noise signals to be applied to the...
|
|
|
7002357 |
Method and apparatus for phase calculation from attenuation values using a Hilbert transform for FDR measurements
The invention concerns a method and a device for phase calculation from attenuation values using a Hilbert transform for reflectometric measurements in the frequency domain. The invention is...
|
|
|
6911827 |
System and method of measuring low impedances
A method comprises generating first and second current levels and measuring the first and second current levels. The method further comprises alternately generating the first and second current...
|
|
|
6844741 |
Method and system for electrical length matching
According to one embodiment of the invention, a computerized method for tuning a wire to have a particular electrical length is provided. The method includes providing a reference wire and the wire...
|
|
|
6653848 |
Method and apparatus for linear characterization of multi-terminal single-ended or balanced devices
A method and apparatus for characterizing a device under test (“DUT”) calibrates a multiport test set and measures S-parameters [S] of the DUT. The method and apparatus further involves...
|
|
|
6529012 |
Arrangement for determining the complex transmission function of a measuring device
With a view to determining the complex transfer function of a measuring instrument, a line spectrum is fed in from a pulse generator which, for example, is constituted by a step-recovery diode, and...
|
|
|
6518741 |
Modulation analyzing apparatus with balance/imbalance converter
An inversion in-phase component and a non-inversion in-phase component of a modulation signal inputted from a quadrature modulation section of a sample machine captured in a pair of signal lines,...
|
|
|
6515486 |
Method and structure to determine low threshold voltage and high threshold voltage
A method is provided for quickly determining low threshold voltages and high threshold voltages of a test circuit. Specifically, a transformed voltage transfer curve for the test circuit is...
|
|
|
6459278 |
Method for characterizing delay of frequency translation devices
Absolute delay of a FTD is characterized by applying a stimulus signal to a first port of the FTD. A second port of the FTD is coupled to a delay element having a known delay and a reflective...
|
|
|
6392398 |
Sampling function generator
A sampling function generator capable of providing continuous output corresponding to a sampling function. The sampling function generator 1 comprises a B spline function generation circuit 10, ...
|
|
|
6292000 |
Process for harmonic measurement with enhanced phase accuracy
A method for determining the harmonic phase response ∠POx of a device under test (DUT) is performed on a vector network analyzer (VNA). The phase ∠GN1 of the transfer response GN1 of the DUT at...
|
|
|
6269318 |
Method for determining transducer linear operational parameters
An apparatus and method for determining a transducers principle operating parameters which utilizes two transfer functions; 1) the transfer function from the pressure response (50) to the voltage...
|
|
|
6232760 |
Method for determining and compensating the transmission function of a measurement apparatus, in particular of a spectrum analyzer
For determination of the transmission function of a measurement apparatus, in particular of a spectrum analyzer, a calibration signal, modulated with a modulation signed such that a line spectrum...
|
|
|
6227033 |
Auto-calibration method for a wide range exhaust gas oxygen sensor
An improved fuel control in which the transfer function of a wide-range exhaust gas oxygen sensor is automatically and periodically learned or re-learned in the course of vehicle operation. The...
|
|
|
6211663 |
Baseband time-domain waveform measurement method
A time-domain baseband measurement method measures modulated microwave signals typically used in communication systems by converting microwave signals to baseband before measurement for improved...
|
|
|
6097194 |
Method and apparatus for obtaining transfer characteristics of a device under test
The invention relates to a time domain method for obtaining transfer characteristics of a device under test (DUT). The method comprises the steps of applying a sine sweep and a cosine sweep to an...
|
|
|
6064694 |
Frequency translating device transmission response system
A three-pair measurement method determines the amplitude and phase transmission response of frequency translating devices including a device under test and two test devices using a vector network...
|
|
|
6064212 |
Method for determining the transmission characteristics of an electric line
|
|
|
6046595 |
Group delay estimate system using least square fit to phase response ramp
The phase response of a network is measured at uniform frequency intervals. A linear regression analysis is performed on samples of the phase response measured at frequencies within an aperture...
|
|
|
5825190 |
Method and apparatus for measuring a transfer impedance of shielded devices and common mode currents in shieldings
A method for measuring a common mode current (Icm) in an outer conductor of a device comprising also at least one inner conductor which includes the steps of interconnecting the one inner conductor...
|
|
|
5751153 |
Method and apparatus for characterizing a multiport circuit
An apparatus (310) for characterizing a multiport circuit (390) includes a signal generator (320) and a circuit interface apparatus (330, 340, 350). The signal generator (320) has an output (329)...
|
|
|
5656932 |
Non-contact type wave signal observation apparatus
A non-contact type wave signal observation apparatus measures transfer functions of a distributed constant network. A signal is input from a network analyzer to the network to be measured....
|
|
|
5649304 |
Method and apparatus for communicating auxiliary information in a measurement signal
A method and apparatus for fast response and distortion measurement of a signal transfer device. A computer processor generates a multitone test signal of predetermined duration and stores it in a...
|
|
|
5511010 |
Method and apparatus of eliminating interference in an undersettled electrical signal
The present invention includes a method of eliminating interference from an undersettled electrical signal, the undersettled electrical signal including a test signal at a known frequency. One...
|
|
|
5467021 |
Calibration method and apparatus
A multistate electronic transfer standard provides electronic conditions to at least one of two ports of a vector network analyzer. One embodiment of the multistate electronic transfer standard...
|
|
|
5420514 |
Swept signal analysis instrument and method
The sweep rate limitations that heretofore have constrained the maximum sweep rates of swept analysis instruments are obviated by optimizing filter circuitry and post-processing the IF signal using...
|
|
|
5363052 |
Permittivity spectroscopy apparatus and method
An apparatus and method for measuring the permittivity of a polar solution specimen to enable a determination of the concentration of polar constituents in the specimen. The apparatus (10) employs...
|
|
|
5327129 |
Accuracy bootstrapping
A method and apparatus for a system physically realizing a transfer function and having improved accuracy and fast calibration is described, comprising a plurality of stages configured in a serial...
|
|
|
5321365 |
Reduced noise sensitivity in inverse scattering through filtering
An inverse scattering processing method with enhanced noise immunity and resolution capabilities for use in modeling multi-layer acoustic, electromagnetic or other propagating media. A time bounded...
|
|
|
5321364 |
Network analyzer
A network analyzer having .means for determining the type and element values of a hypothetical lossless matching circuit for a device under test (DUT) and for computing and displaying S parameters...
|
|
|
5311440 |
Methods and apparatus for correction of cable variations
Methods and apparatus are described for automatically determining correction factors for an electrical device to compensate for variations in the device as a result of mechanical and/or...
|
|
|
5291140 |
Mixed domain spectrum measurement method
Aliasing and synchronization difficulties in determining transfer functions in mixed domain (analog and digital) systems are overcome by sampling the analog signal at a higher sampling frequency...
|
|
|
5182717 |
Device for testing a network of components, in particular an electronic circuit
Device for testing a network of components, in particular an electronic circuit. The respective potential differences between the terminals of the circuit to be tested are acquired during a chosen...
|
|
|
5175698 |
Method and system for transfer function measurement
An automatic, multi-use device for measuring the transfer function of any nonlinear continuous network or network component. Transfer functions (also known as input/output reactions) are the main...
|
|
|
5121065 |
Mixed domain mixed ratio frequency response sampling
Aliasing and synchronization difficulties in determining transfer functions in mixed domain (analog and digital) systems are overcome by sampling the analog signal at an integer multiple of the...
|
|
|
5093627 |
Impedance and transfer characteristic measuring apparatus
In an impedance and transfer characteristic measuring apparatus sine-wave and cosine-wave data are produced using data obtained by accumulating a fixed phase value in synchronism with a clock...
|
|
|
5089782 |
Vector network analyzer for swept frequency harmonic and mixer conversion loss measurements using either an internal or external signal source
A vector network analyzer for performing swept frequency measurements on non-linear RF devices, using either an internal or external signal source. This simplifies and speeds linear and non-linear...
|
|
|
5072189 |
Scalar network analyzer
A low cost and portable scalar network analyzer for the simultaneous measurement of forward and reflected scalar scattering parameters of devices under test. Plural UHF oscillators of similar...
|
|
|
5059915 |
Vector network analyzer RF pulse profiling method and apparatus
A vector network analyzer comprising a circuit for measuring the real and imaginary components of the central spectral line in an RF pulse from a device-under-test is provided. The circuit...
|
|
|
4990859 |
Process and apparatus for determining the impedance of the discharge in a plasma reactor system comprising a tuning box and application to the regulation of the impedance or the ionic current in such reactor
A method and apparatus for determining the impedance of the discharge in a plasma reactor system comprising a tuning box having variable capacitors is described. The impedance of the discharge is...
|
|
|
4931720 |
Arrangement for measuring transfer impedances of coaxial cables
In an arrangement for measuring transfer impedances of coaxial systems (3), a generator (1) is connected via a coaxial, supplying system (2) to a conductor shield (6) of the coaxial system (3) at a...
|