| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324638000 | Scattering type parameters (e.g., complex reflection coefficient) | 14 |
| 20080211517 | Measurement Arrangement for Determining the Characteristic Line Parameters by Measuring Scattering Parameters - The present invention relates to a measurement arrangement for determining the characteristic line parameters by measuring the S-parameters as a function of the frequency of transmission lines. A voltage mesh and a ground mesh in a metal layer are connected symmetrically to a reference ground (RG) in the layer at all ends. | 09-04-2008 |
| 20080265911 | Power Sensing Module with Built-In Mismatch and Correction - A module determines the mismatch corrected power output of a generator. Loads within the module provide at least three different load values. At least one power sensor detects at least a portion of the power output by the generator for each of the load values. Input electrical paths transmit power from the generator to the loads. At least one output electrical path transmits signals from the at least one power sensor indicative of power received when the generator is electrically connected to the different load values. | 10-30-2008 |
| 20080290880 | Network Analyzer Comprising a Switchable Measuring Bridge - The invention relates to a network analyzer comprising a signal generator for generating an excitation signal which can be supplied to a measuring object connectable to a network analyzer by means of a measuring line, and a measuring bridge which is connected to the measuring line by means of signal transmission. A reference signal corresponding to the excitation signal can be extracted from a reference channel, and a measuring signal corresponding to a signal corresponding to a signal reflected from the measuring object can be extracted from a measuring channel. the measuring bridge comprises a resistive bridge and at least one hybrid coupler which is connected to the resistive bridge in series. the measuring bridge is operated as a resistive bridge in a low frequency range and as a hybrid coupler in a upper frequency range. | 11-27-2008 |
| 20090184722 | Large Signal Scattering Functions From Orthogonal Phase Measurements - The invention measures the X-parameters (or large-signal S and T scattering functions, sometimes called linearized scattering functions, which are the correct way to define “large-signal S-parameters”) with only two distinct phases for small-signals on a frequency grid established by intermodulation frequencies and harmonics of the large-tones, with guaranteed well-conditioned data from which the X-parameter functions can be solved explicitly, without the need for regression, and not limited by performance limits of the reference generator or phase-noise. | 07-23-2009 |
| 20090267616 | S-Parameter Measurement - A method and system utilizing a network analyzer and a test controller for measuring scattering parameters (S-parameters) of a microwave device that rapidly switches through a plurality of states. The test controller sends a trigger to the analyzer, which starts a frequency sweep having substantially the same start and stop frequency, and provides the sweep to the device. The analyzer then measures and stores at least one S-parameter of the device and provides the test controller with a trigger. The test controller updates the device to the next state in a predetermined sequence of states and the above steps are iteratively repeated until S-parameters for all of the states in the sequence have been measured. | 10-29-2009 |
| 20100277184 | NON-DESTRUCTIVE DETERMINATION OF ELECTROMAGNETIC PROPERTIES - Systems and methods to determine electromagnetic properties are provided. A particular method includes directing electromagnetic energy toward an article under test. The method also includes taking measurements of electromagnetic energy scattered by the article under test. The method further includes determining expected baseline values of at least one electromagnetic property of the article under test. The expected baseline values are based on electromagnetic energy scattered by a control article. The method also includes determining output data based on a difference between the expected baseline values and characteristic values of the article under test determined based on the measurements of electromagnetic energy scattered by the article under test. The output data includes values indicative of inhomogeneous distribution of an electromagnetic property of the article under test. | 11-04-2010 |
| 20130307563 | Method And Device For Measuring The Speed Of A Rolling Stock - A method is disclosed for determining the speed of a rolling stock, for example the belt speed of a rolling belt, wherein electromagnetic radiation in the microwave range is transmitted to the rolling stock by at least one transmitting and receiving device and the belt speed is determined on the basis of the reflected and received reflection signal in an evaluation device. A device for carrying out such method is also disclosed. | 11-21-2013 |
| 20150035546 | High Sensitivity Tunable Radio Frequency Sensors - Disclosed are highly sensitive and tunable RF sensors that provide detection and analysis of single cells and particles. The tunable RF sensors are configured as tunable interferometers, wherein cells or particles to be analyzed are passed through a channel, such as a microfluidic channel, across waveguides corresponding to reference and test branches of the interferometers. A network analyzer coupled to the interferometers can be configured to measure a plurality of scattering parameters, such as transmission scattering coefficients (S | 02-05-2015 |
| 20150323576 | ELECTROCHROMIC CELL FOR RADIO-FREQUENCY APPLICATIONS - A disclosed electrical cell enables experimental measurements of dielectric properties of an electrochromic material in the radio-frequency range of the electromagnetic spectrum. In an example embodiment, the electrical cell includes a layer of the electrochromic material under test that is sandwiched between a conducting base plane and a microstrip line. The conducting base plane and the microstrip line are electrically connected to a co-planar waveguide configured for application of superimposed DC-bias and RF-probe signals using a conventional probe station and a vector network analyzer. The S-parameters of the electrical cell measured in this manner can then be used, e.g., to obtain the complex dielectric constant of the electrochromic material under test as a function of frequency. | 11-12-2015 |
| 20150369849 | DETERMINING OPERATING CHARACTERISTICS OF SIGNAL GENERATOR USING MEASURING DEVICE - A method determines operating characteristics of a signal generator. The method includes performing a first set of measurements of an output signal generated by the signal generator and corresponding reflected signal, where the first set of measurements is performed over multiple frequencies and amplitudes of the output signal; applying an external signal to the output port of the signal generator; performing a second set of measurements of the output signal and corresponding reflected signal while the external signal is being applied to the output port, where the second set of measurements is performed over frequencies and amplitudes of the output signal, the external signal having the same frequency as the output signal for each measurement of the second set of measurements. A set of coefficients describing the operating characteristics of the signal generator is determined by processing results of the first and second sets of measurements through a non-linear model. | 12-24-2015 |
| 20160103166 | SYSTEM AND METHOD FOR MEASUREMENT OF S-PARAMETERS AND DISPERSION AND PROVIDING A BLENDED SOLUTION OF BOTH - A system includes a test signal generator generating a test signal having a carrier and at least two sidebands, and provides the test signal to a device under test (DUT). A plurality of couplers sense an incident signal, a reflected signal, and a transmitted signal for the DUT at corresponding test ports of the test system when the test signal is supplied to the DUT. A signal processing apparatus: detects S-parameters for the DUT from the carrier present in each of the incident signal, reflected signal, and transmitted signal for the device under test; measures a dispersion for the DUT at each of the test ports from the two sidebands present in the incident signal, reflected signal, and transmitted signal for the device under test using the two frequencies; and combines the detected S-parameters and the measured dispersions to output enhanced measurements of the S-parameters and the dispersions. | 04-14-2016 |
| 20160116422 | APPARATUS FOR CHEMICAL CONCENTRATION DETERMINATION USING MICROWAVE SPECTROSCOPY - Compound detection or testing apparatus includes a microwave power supply, an antenna electrically coupled to the microwave power supply, the antenna adapted to emit energy during use of the apparatus, the antenna further adapted to receive an unabsorbed energy from the material and generate a signal defining the unabsorbed energy, a processing components configured to process the signal and determine a concentration of the compound on/in the fabric material and a reporting member coupled to each of the power supply and the processing member the reporting component configured to communicate the concentration of the compound on/in the fabric material. The apparatus may be configured as a hand-held sensor. | 04-28-2016 |
| 20160161425 | APPARATUS AND METHOD FOR DETERMINING A VALUE OF A PROPERTY OF A MATERIAL USING MICROWAVE - Methods and apparatuses for determining a value of a property of a material that flows in a conduit inside a microwave cavity are described. Such apparatus may include: a multi-mode microwave cavity having the conduit in it; a plurality of feeds, each configured to feed the cavity with RF radiation to excite multiple modes in the cavity; a detector, configured to detect parameters indicative of electrical response of the cavity to RF radiation fed to the cavity; and a processor, configured to determine the value of the property based on the parameters detected by the detector. In some embodiments, at least one of the feeds comprises a radiating element outside the cavity and a waveguide configured to guide waves from the radiating element to the cavity. | 06-09-2016 |
| 20160377557 | SCATTERING TOMOGRAPHY METHOD AND SCATTERING TOMOGRAPHY DEVICE - A scattering tomography method includes: radiating waves to an object from a plurality of transmitting antenna elements aligned on a side surface of a case; receiving scattered waves by a plurality of receiving antenna elements aligned on the side surface of the case; and reconstructing an image relating to information on an interior of the object using scattered wave data representing the scattered waves. In the reconstructing, a reconstruction function for reconstructing the image relating to the information on the interior of the object is set in advance for a three-dimensional space having the same shape as the case, a scattering field equation which the reconstruction function satisfies is constructed, a visualization function that is obtained by solving the scattering field equation is derived from the scattered wave data, and the image relating to the information on the interior of the object is reconstructed using the visualization function. | 12-29-2016 |
