Distributive Type Parameters Patents (Class 324/629)
  • Patent number: 11418020
    Abstract: Testing device for testing an overcurrent protector, and method of operating the same. First and second switches are provided for connecting the first and second terminals of the overcurrent protector to first and second capacitors, respectively. The first and second capacitors are pre-charged to first and second voltages, where the second voltage is lower than the first. A controller switches the first and second switches to their test positions, which establishes a current path from the first capacitor to the second capacitor through the overcurrent protector. The first and second voltages are selected so that the peak current that would be generated in the current path is greater than the overcurrent threshold of the overcurrent protector.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: August 16, 2022
    Assignee: Aptiv Technologies Limited
    Inventors: Jörg Wallerath, Emmanuel Boudoux
  • Patent number: 11397222
    Abstract: A system for determining at least one characteristic of a transmitting coil generating a magnetic field may include a first measurement coil being wound in a first direction, a second measurement coil being wound in a second direction, a voltage measuring device, and at least one processor in communication with the voltage measuring device. The first measurement coil and the second measurement coil may be adjacent to one another. The voltage measuring device may be configured to measure a first voltage of the first measurement coil and a second voltage of the second measurement coil in response to the magnetic field generated by the transmitting coil. The at least one processor may be configured to determine the at least one characteristic of the transmitting coil based on a ratio between the first voltage and the second voltage at a predetermined frequency.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: July 26, 2022
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Taehwa Lee, Daniel Hashemi, Hideo Iizuka
  • Patent number: 11231327
    Abstract: Provided is a method of calibrating a microwave radiometer, which eliminates use of liquid nitrogen as a calibration source. The method is applied to a microwave radiometer configured to receive, by a receiver having a primary radiator connected thereto, a radio wave emitted from an object to be measured depending on a temperature of the object to be measured and to measure a brightness temperature of the object to be measured from an output signal of the receiver. In the method, the method a noise temperature Trx of the receiver appearing on an output side of the receiver is calibrated by observing a plurality of calibration sources having known brightness temperatures. The method includes using a radio wave reflector configured to totally reflect noise radiated from an input side of the receiver as one of the plurality of calibration sources.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: January 25, 2022
    Assignee: ELECS INDUSTRY CO., LTD.
    Inventors: Noriyuki Kawaguchi, Tadashi Takano, Kensuke Ozeki, Yuichi Chikahiro, Kenichi Harada
  • Patent number: 11219130
    Abstract: A circuit board including a substrate, a patterned conductive layer, a patterned insulating layer, a conductive terminal, and a dummy terminal is provided. The patterned conductive layer is disposed on the substrate. The patterned insulating layer is disposed on the substrate and at least covers a portion of the patterned conductive layer. The conductive terminal is disposed on the patterned conductive layer and has a first top surface. The dummy terminal is disposed on the patterned conductive layer and has a second top surface. A first height between the first top surface and the substrate is greater than a second height between the second top surface and the substrate.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: January 4, 2022
    Assignee: Unimicron Technology Corp.
    Inventors: Kai-Ming Yang, Chen-Hao Lin
  • Patent number: 11092619
    Abstract: An active split-signal Fo and 2Fo harmonic impedance load pull tuner uses a single signal source, a wideband harmonic amplitude and phase modulator-frequency doubler. The Fo source signal path is divided between input and output of the DUT; the output portion is processed to generate independently controlled synchronous amplitude and phase controlled Fo and 2Fo signals, which are then amplified and re-injected into the output of the DUT after being pre-matched using a passive harmonic tuner. A harmonic receiver is used to synthesize in situ the required Fo and 2Fo load impedances. Passive 3Fo tuning is also possible independently.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: August 17, 2021
    Inventor: Christos Tsironis
  • Patent number: 11051703
    Abstract: A method of detecting a vital sign comprising at least one of a heart rate and a respiratory rate of a subject is provided. In one aspect, the method includes transmitting a radio frequency signal towards the subject; and receiving a reflected signal from the subject, wherein the transmitted signal is reflected by the subject and Doppler-shifted due to at least one of the heart rate and the respiratory rate to form the reflected signal. The method also includes mixing the reflected signal with a first reference signal; and providing a vital sign carrying signal based on the mixing to a first input of a phase or frequency comparator. The method further includes generating an adjustable second reference signal and providing the reference signal to a second input of the phase or frequency comparator; and generating an output signal, by the phase or frequency comparator.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: July 6, 2021
    Assignee: Stichting IMEC Nederland
    Inventors: Yao-Hong Liu, Marco Mercuri
  • Patent number: 11041882
    Abstract: An active split-signal Fo and 2Fo harmonic impedance load pull tuner uses a single signal source, a wideband harmonic amplitude and phase modulator-frequency doubler. The Fo source signal path is divided between input and output of the DUT; the output portion is processed to generate independently controlled synchronous amplitude and phase controlled Fo and 2Fo signals, which are then amplified and re-injected into the output of the DUT after being pre-matched using a passive harmonic tuner. A harmonic receiver is used to synthesize in situ the required Fo and 2Fo load impedances. Passive 3Fo tuning is also possible independently.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: June 22, 2021
    Inventor: Christos Tsironis
  • Patent number: 10908097
    Abstract: Measurement methods are known for determining the concentration of an ingredient in a body of ceramic or glassy material, in which the optical path length or the signal propagation time of a measurement wave penetrating the body of ceramic or glassy material in a measurement direction is determined and evaluated. Starting therefrom, in order to indicate a non-destructive method for determining a concentration of an ingredient in a body of ceramic or glassy material, which is also suitable for measurement in the production process of the body concerned, it is suggested according to one embodiment that modulated gigahertz radiation is used as the measurement wave.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 2, 2021
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventor: Helmut Friedrich
  • Patent number: 10473704
    Abstract: A mixed mode vector network analyzer (VNA) system to measure S-parameters and DC parameters of a differential device under test (DUT) is provided. The mixed mode VNA system measures mixed mode S-parameter measurements (i.e., AC measurements) using an independent resistive reflectometer bridge connected to each of the two ports of the differential DUT. The mixed mode VNA system further measures DC parameters of the differential DUT without impacting the measurement of S-parameters. In one embodiment, the mixed mode VNA system is used to measure multi-port differential DUT. Coupling capacitors provide low enough impedance to even the smallest RF frequency of AC measurement (i.e., measurement of S-parameters).
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 12, 2019
    Assignee: INSPIRAIN TECHNOLOGIES PTE LTD
    Inventors: Harshang Nileshkumar Pandya, Arvindbhai Chimanbhai Patel
  • Patent number: 10388126
    Abstract: A method in conjunction with a passenger guidance system guides a passenger to a passenger seat disposed in a vehicle. In order to guide a passenger quickly and reliably to a passenger seat which corresponds to his needs and is disposed in a vehicle, and to improve the flow of passengers, it is proposed to determine occupation states of passenger seats of the vehicle and to guide the passenger to an unoccupied passenger seat. For carrying out the method, a passenger guidance system is proposed which has at least one device for determining the occupation state of passenger seats arranged in a vehicle, at least one evaluation device which is configured to determine a destination to which a passenger is to be guided, and a transmission device by which data which are suitable for indicating a path to the destination can be transmitted to at least one display device.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: August 20, 2019
    Assignee: Siemens Mobility GmbH
    Inventors: Joerg Gruenbaum, Holger Last, Roland Loskarn, Roland Porsch, Juergen Schlaht
  • Patent number: 10338017
    Abstract: Techniques for detecting high impedance conditions in an electrical grid are described herein. In one example, impedance is calculated for each of a plurality of locations within the electrical grid, such as at electrical meters. The impedances may be calculated as a change in voltage divided by a change in current, such as between sequential voltage/current measurements. Statistics may be maintained, including the calculated impedances. In three examples, statistics may be used to identify growth in impedance over multiple days, to identify growth in impedance over multiple hours, and to identify a meter for which impedance is higher than impedance for other meters attached to a single transformer. In a further example, instances of impedance over a threshold value may be identified, from among the maintained statistics. The instances of high impedance may be reported for reasons including cost and safety.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 2, 2019
    Assignee: Itron, Inc.
    Inventors: Robert Sonderegger, Timothy James Driscoll
  • Patent number: 10340978
    Abstract: There is provided a method and apparatus for determining the input impedance (ZL) of an AC transmission line used for Power Line Communications (PLC), using a transmitted data packet having a preamble portion. The method comprises, at the analog-front-end (AFE) of the AC transmission line, determining the current through the AFE and the AC transmission line during transmission of the preamble portion of the data packet and determining the voltage during transmission of the preamble portion of the data packet. The method further comprises calculating the total impedance (Zt) from the determined current and voltage. The total impedance (Zt) includes the input impedance (ZL) of the AC transmission line and the AFE impedance (ZAFE). Finally, the method includes determining the input impedance (ZL) of the AC transmission line from the total impedance (Zt).
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: July 2, 2019
    Assignee: Itron Global SARL
    Inventors: Philippe Chiummiento, Matthieu Pichot, Dinh Thang Vu
  • Patent number: 10014732
    Abstract: A method is provided for optimizing wireless charging of a mobile device by a wireless charger. The method comprises successively reducing transmit power in the wireless charger until an operating wireless transmit power is reached when a power loss occurring during a wireless transmission of power is caused by magnetic saturation, wherein the magnetic saturation occurs in at least one of the mobile device and the wireless charger, wherein the wireless transmission of power is from the wireless charger to the mobile device, and wherein the magnetic saturation is reduced at the operating wireless transmit power, and disabling charging by the wireless charger when the power loss occurring during the wireless transmission of power is caused by a foreign object is present between the mobile device and the wireless charger.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: July 3, 2018
    Assignee: BlackBerry Limited
    Inventors: Joseph Patino, Soniya Noormuhamed Thekkevalappil, Salvador Sibecas
  • Patent number: 9832736
    Abstract: A method for gain control of an active DAS relay unit is disclosed, including: acquiring a downlink output power value of a remote unit accessing the active DAS, and acquiring an uplink maximum gain value of a relay unit of the active DAS; obtaining an attenuation adjustment value required to be set for an uplink where the remote unit is, based on a combination of the downlink output power value and the uplink maximum gain value; and setting an adjustable attenuator arranged in the uplink based on the attenuation adjustment value. A device for gain control of an active DAS relay unit and a relay unit are also disclosed. The present disclosure may be compatible with remote units with different power levels, simplify the complexity of the design of the coverage scheme, increase the flexibility of the network construction, and reduce the cost of the network construction.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: November 28, 2017
    Assignee: COMBA TELECOM TECHNOLOGY (GUANGZHOU) CO., LTD.
    Inventors: Hailong Deng, Hui Zhang, Song Cao, Yuwen Zhang
  • Patent number: 9639225
    Abstract: A method and circuitry for detecting a touch on a device is provided herein. Touch-sensing circuitry comprises two antennas coupled to two voltage-controlled oscillators (VCOs). A phase locked loop (PLL) is provided coupled to the VCOs. The PLL compares a VCO output with a frequency source (temperature controlled crystal oscillator (TCXO)), and outputs a tuning voltage (steering voltage) for the VCO that is based on the difference between the VCO frequency and the TCXO frequency. The steering voltages for each VCO are compared, and a decision is made as to whether or not a touch has been made to the antennas. If the antennas have been touched, a location of the touch is determined based on a difference in the steering voltages of the two VCOs.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 2, 2017
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Bing Qin Lim, Murali Kuyimbil, Wai Mun Lee, Lee Sun Ooi, Wooi Ping Teoh
  • Patent number: 9570793
    Abstract: A circuit can include a tandem directional coupler comprising a first directional coupler and a second directional coupler connected in tandem. Each of the first and second directional couplers can have a first strip and a second strip. Port 3 of the first directional coupler can be connected to Port 1 of the second directional coupler. Port 4 of the first directional coupler can be connected to Port 2 of the second directional coupler.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: February 14, 2017
    Assignee: Gatesair, Inc.
    Inventor: Dmitri Borodulin
  • Patent number: 9496921
    Abstract: Disclosed is hybrid communication in which a first message from a guided surface wave probe node is embedded in a guided surface wave, and a second message from a guided surface wave receive node uses a different messaging mechanism.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 15, 2016
    Assignee: CPG Technologies
    Inventors: James F. Corum, Kenneth L. Corum, Basil F. Pinzone, Jr., Joseph F. Pinzone
  • Patent number: 9450284
    Abstract: A system for resonance based cable compensation includes a first switch with a first terminal for connecting a first connection of a cable having a resonant circuit on an end of the cable opposite the first switch. The system also includes a second terminal for connecting a second connection of a cable that has its first connection connected to the first terminal. A logic component is operatively connected to control the first switch to selectively apply voltage pulses across the first and second terminals to generate a resonance signal in a cable connected to the terminals in order to compensate for equivalent cable capacitance.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 20, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventors: James Saloio, Jr., Ronald D. Poisson
  • Patent number: 9423438
    Abstract: A dielectric constant measurement circuit includes a dielectric constant sensor, an oscillator controlling circuit, a waveform converting circuit, and a counting readout circuit. The oscillator controlling circuit generates an oscillation waveform according to the response of the dielectric constant sensor to a dielectric material. The waveform converting circuit converts the oscillation waveform into frequency division square waves. The counting readout circuit includes a switching counter, a switching circuit, a reference current source, and a current integrator.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: August 23, 2016
    Assignees: NATIONAL TAIWAN UNIVERSITY, NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chii-Wann Lin, Sheng-Yu Peng, Bo-Shen Chen, Jhih-Hong Lin
  • Patent number: 9304029
    Abstract: A gauging installation for a tank with a long narrow nozzle providing access to an interior of the tank. The gauging system includes a GWR level gauge with a probe, and a first rigid extension member providing an interior probe mounting position at the end of the nozzle. The probe is configured to guide an electromagnetic transmit signal from a transceiver towards the product inside the tank, and to return the electromagnetic echo signal resulting from a reflection of the electromagnetic transmit signal by a surface of the product. A microwave transmission line connects the transceiver and the probe. With this design the beginning of the probe of the GWR level gauge will be located at the lower end of the nozzle, i.e. at the upper interior of the tank.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: April 5, 2016
    Assignee: Rosemount Tank Radar AB
    Inventors: Oscar Guzman, Ilya Rikhter
  • Patent number: 9176175
    Abstract: A method for analyzing a material-under-test includes levitating a free-floating magnet between a material-under-test and a diamagnet and a mounted magnet, such that the diamagnet is positioned between the mounted magnet and the free-floating magnet, measuring a rotation rate of the free-floating magnet over time, and calculating at least one of a conductivity and resistivity of the material-under-test based on the measured rotation rate of the free-floating magnet over time.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: November 3, 2015
    Assignee: International Business Machines Corporation
    Inventor: Oki Gunawan
  • Publication number: 20150145528
    Abstract: A passive intermodulation (PIM) measurement device for measuring a PIM in at least one of installation equipments and a distribution network within a distributed antenna system (DAS), the PIM measurement device included in a relay unit of the DAS, the PIM measurement device includes a pulse generation unit, a PIM detection unit and a controller. The pulse generation unit generates a two-tone pulse signal having frequencies different from each other. The PIM detection unit detects intermodulation (IM) signals fed back from the installation equipments or the distribution network in the DAS, corresponding to the propagation of the two-tone pulse signal. The controller detects PIM generation information in the DAS, based on the fed-back IM signal.
    Type: Application
    Filed: December 26, 2014
    Publication date: May 28, 2015
    Inventors: Yeong Shin YEO, Kyung Eun HAN
  • Publication number: 20150137830
    Abstract: An apparatus for detecting a condition or authenticity of one or more electronic devices includes an enclosure having an antenna integrated therewithin, a fixture mounted within a hollow interior of the enclosure, the fixture being configured to receive the one or more electronic devices and connect one or more signals to each of the one or more electronic devices and a sensor and controller assembly connected to the antenna and configured to process a signature of an emission of a radiofrequency (RF) energy from of one or more electronic devices having the one or more signals connected thereto.
    Type: Application
    Filed: March 6, 2014
    Publication date: May 21, 2015
    Inventors: Walter John Keller, III, Andrew Richard Portune, Todd Eric Chornenky, William Anthony Davis
  • Publication number: 20150130479
    Abstract: An information processing system includes a cable and a first information processing apparatus. The cable connects information processing apparatuses to each other. The cable includes one or more first core wires through which information is transmitted, and one or more second core wires having a shape or component associated with preset information. The first information processing apparatus measures a first parameter that is related to the second core wires and changes with the shape or component, and to identify the cable using the measured first parameter.
    Type: Application
    Filed: October 22, 2014
    Publication date: May 14, 2015
    Inventor: TADAO AMADA
  • Patent number: 9030214
    Abstract: A sensor for sensing proximity or touch of an object includes a sensing region, an oscillating signal generator for generating an oscillating signal having an oscillation period, a gating signal generator for generating a gating signal having a gating duration, a controller for controlling the oscillation period or the gating duration and a processor for determining a number N of oscillation periods over the gating duration. The number N is indicative of the object's contact with, or proximity to, the sensing region. The sensor is calibrated by determining an optimal value for the oscillation period or gating duration such that an optimal number N over the gating duration is expected.
    Type: Grant
    Filed: July 15, 2012
    Date of Patent: May 12, 2015
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Wangsheng Mei, Paulo C. Knirsch
  • Patent number: 9008989
    Abstract: A computing device receives acceleration information from an accelerometer mechanically coupled to a wireless controller, magnetic bearing information from a magnetometer mechanically coupled to the wireless controller, and rotation information from a gyroscope mechanically coupled to the wireless controller. When the wireless controller is primarily vertical, the computing device determines a rotation angle of the wireless controller by filtering the rotation information using the acceleration information. When the wireless controller is primarily horizontal, the computing device determines the rotation angle of the wireless controller by filtering the rotation information using the magnetic bearing information.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: April 14, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Andrew Wilson, David Russo
  • Patent number: 9000775
    Abstract: A fill-level measuring device for ascertaining and monitoring fill level of a medium located in the process space of a container by means of a microwave travel time measuring method. The device comprises a measurement transmitter and an antenna unit, which is constructed at least of a hollow conductor and a radiating element A microwave transmissive, process isolating element is inserted for process isolation into the hollow conductor between the measurement transmitter and the horn shaped radiating element contacting the process space. The process isolating element is embodied as a hollow body having at least one tubular hollow body region matched to the shape of the hollow conductor, and a pointed hollow body region neighboring the hollow body region in the direction of the radiating element and having a wall thickness selected based on reflection, or lack thereof, of the microwave signals.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: April 7, 2015
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Qi Chen, Eric Bergmann, Klaus Feisst
  • Patent number: 9000774
    Abstract: A system for measuring the conductivity of a material-under-test includes a support structure, an upper magnet mounted to the support structure and a free-floating magnet below the fixed magnet. The system includes a diamagnet positioned between the fixed magnet and the free-floating magnet such that the free-floating magnet floats in the air beneath the diamagnet and a rotation detection assembly configured to detect a rotation rate of the free-floating magnet, where the rotation rate is based on a drag torque effect of a material-under-test on the free-floating magnet. The system also includes a conductivity calculation unit configured to calculate at least one of a conductivity or a resistivity of the material-under-test based on the detected rotation rate of the free-floating magnet.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 7, 2015
    Assignee: International Business Machines Corporation
    Inventor: Oki Gunawan
  • Patent number: 8981792
    Abstract: A monitoring system includes an array of concatenated sensing nodes, with each sensing node being configured to have at least one of near-field and far-field RF coupling circuitry to interface with an adjacent sensing node. A respective device is coupled to each of the sensing nodes. A reader device is configured to have at least one of near-field and far-field RF coupling circuitry to interface with the array of concatenated sensing nodes to read data from the devices.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: March 17, 2015
    Assignee: STMicroelectronics S.R.L.
    Inventor: Giovanni Girlando
  • Patent number: 8963769
    Abstract: A guided wave radar transmitter for interface measurement comprises a probe defining a transmission line for sensing level of two immiscible liquids to define an interface therebetween. A pulse circuit generates pulses on the transmission line and receives a reflected signal from the transmission line. The reflected signal selectively includes a level pulse representing material level and an interface pulse representing interface level. A controller operates in an interface mode to determine the material level and the interface level responsive to receiving the level pulse and the interface pulse. The controller operates in a medium identification mode responsive to not receiving the interface pulse, comprising calculating an estimated amplitude of the level pulse for the two immiscible liquids and comparing actual amplitude of the level pulse to the estimated amplitude of the level pulse to identify the medium in the vessel.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: February 24, 2015
    Assignee: Magnetrol International, Incorporated
    Inventors: Michael J. Linden, James M. Berry
  • Patent number: 8963560
    Abstract: An antenna system for electromagnetic compliance testing within a frequency range includes a driven element mounted on a boom and including opposed first and second length-adjustable conductors. A length-adjustable passive element is mounted on the boom and spaced apart from the driven element and including opposed third and fourth length-adjustable conductors. An RF input connector is coupled between a feed path to a feed end of each length-adjustable conductors in the driven element. The feed path is configured to minimize stray reactances and stub effects within the frequency range.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: February 24, 2015
    Assignee: Steppir Antenna Systems
    Inventors: Michael Edward Mertel, James E. Thomas
  • Publication number: 20150042359
    Abstract: An apparatus includes a coil suspended in a magnetic field, and an optical detector to detect displacement of the coil in response to a stimulus. The apparatus further includes a feedback circuit coupled to the optical detector and to the coil. A coil constant of the apparatus may be configured to a desired value.
    Type: Application
    Filed: October 22, 2014
    Publication date: February 12, 2015
    Inventors: Abidin Guclu Onaran, Charles D. Thompson
  • Publication number: 20150042358
    Abstract: A dielectric constant measurement circuit includes a dielectric constant sensor, an oscillator controlling circuit, a waveform converting circuit, and a counting readout circuit. The oscillator controlling circuit generates an oscillation waveform according to the response of the dielectric constant sensor to a dielectric material. The waveform converting circuit converts the oscillation waveform into frequency division square waves. The counting readout circuit includes a switching counter, a switching circuit, a reference current source, and a current integrator.
    Type: Application
    Filed: December 9, 2013
    Publication date: February 12, 2015
    Applicants: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
    Inventors: Chii-Wann LIN, Sheng-Yu PENG, Bo-Shen CHEN, Jhih-Hong LIN
  • Publication number: 20150035545
    Abstract: An apparatus for determining information on a power variation of a transmit signal comprises a power amplifier module, an antenna module and a power variation determining module. The power amplifier module amplifies a radio frequency transmit signal and the antenna module transmits at least partly the amplified radio frequency transmit signal. The power variation determining module determines a weighted sum of a first feedback signal derived from the amplified radio frequency transmit signal and a second feedback signal derived from the amplified radio frequency transmit signal. The first feedback signal and the second feedback signal comprise different dependencies on a varying impedance at the antenna module. Further, the power variation determining module generates a power variation signal based on the weighted sum. The power variation signal comprises information related to a power variation of the amplified radio frequency transmit signal.
    Type: Application
    Filed: July 25, 2014
    Publication date: February 5, 2015
    Inventors: Andreas Langer, Thomas Bruder
  • Patent number: 8947102
    Abstract: Soil water content and bulk electrical conductivity may be determined by time domain reflectometry at multiple depths in the soil such that the entire soil profile from the surface to a user-selected depth may be characterized. A short rise-time pulse is passed into an electrode and the reflected pulse is captured at multiple times. A waveform of reflection coefficient versus time is determined, which may be used to determine the pulse travel time, effective frequency and reflection coefficients at times necessary for the determination of the soil water content and bulk electrical conductivity.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: February 3, 2015
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Steven R. Evett, Scott K. Anderson, Joaquin J. Casanova, Robert C. Schwartz
  • Patent number: 8941371
    Abstract: An RFID-based sensor is provided with an RFID chip and an antenna electrically connected to the RFID chip. The sensor further includes a sensing material electrically connected to the antenna and a drive element. At least a portion of the sensor is movable between a closed condition in which the sensing material is isolated from the outside environment and an open condition in which the sensing material is exposed to the outside environment. The drive element moves the sensor between the open and closed configurations depending on whether or not it is receiving a signal.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: January 27, 2015
    Assignee: Avery Dennison Corporation
    Inventor: Ian J. Forster
  • Patent number: 8933705
    Abstract: An electronic circuit with a plurality of connections for a plurality of sensor elements is provided, wherein the electronic circuit is configured to detect, with at least one multiplexing method, the presence of an object in at least one observation area of the sensor elements and to distinguish between the sensor elements. Also a method for determining the position of at least one object situated in at least one observation area of sensor elements relative to the sensor elements is provided, whereby with a multiplexing method an electric variable for each sensor element is detected, which is indicative for the presence of the object in the respective observation area.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: January 13, 2015
    Assignee: Microchip Technology Germany GmbH II & Co. KG
    Inventors: Claus Kaltner, Holger Steffens
  • Patent number: 8933718
    Abstract: A signal distribution structure for distributing a signal to a plurality of devices includes a first signal guiding structure including a first characteristic impedance. The signal distribution structure also includes a node, wherein the first signal guiding structure is coupled to the node. The signal distribution structure includes a second signal guiding structure including one or more transmission lines. The one or more transmission lines of the second signal guiding structure are coupled between the node and a plurality of device connections. The second signal guiding structure includes, side-viewed from the node, a second characteristic impedance which is lower than the first characteristic impedance. The signal guiding structure also includes a matching element connected to the node.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: January 13, 2015
    Assignee: Advantest (Singapore) Pte Ltd
    Inventor: Bernd Laquai
  • Publication number: 20140368218
    Abstract: An oil-in-water emulsion includes an aqueous phase and an oily phase, the aqueous phase including water and a relaxing agent, and the oily phase including an oil and at least one surfactant. The emulsion has dielectric properties simulating dielectric properties of the human body. A device including the emulsion, a simulated human body part filled with the emulsion; and at least one system capable of measuring a local specific absorption rate when the simulated human body part is exposed to an electromagnetic field are also described. A method for conducting specific absorption rate tests of an apparatus radiating an electromagnetic field including using the emulsion, and a process for manufacturing the emulsion are also described.
    Type: Application
    Filed: November 29, 2012
    Publication date: December 18, 2014
    Applicant: ART-FI
    Inventors: Kristell Quelever, Thibaud Coradin, Christian Bonhomme, Olivier Meyer, Benoit Derat
  • Patent number: 8912809
    Abstract: A test system for testing an antenna tuning element is provided. The test system may include a tester, a test fixture, and a probing structure. The probing structure may include probe tips configured to mate with corresponding solder bumps formed on a device under test (DUT) containing an antenna tuning element. The DUT may be tested in a shunt or series configuration. The tester may be electrically coupled to the test probe via first and second connectors on the test fixture. An adjustable load circuit that is coupled to the second connector may be configured in a selected state so that a desired amount of electrical stress may be presented to the DUT during testing. The tester may be used to obtain measurement results on the DUT. Systematic effects associated with the test structures may be de-embedded from the measured results to obtain calibrated results.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: December 16, 2014
    Assignee: Apple Inc.
    Inventors: Liang Han, Matthew A. Mow, Ming Tsai, Thomas E. Biedka, Robert W. Schlub, Ruben Caballero
  • Patent number: 8884632
    Abstract: A fill level measuring device. On a plurality of different signal paths, microwave signals can be transmitted into a container, and their associated echo signals recorded. The device includes: measuring device electronics having a microwave generator for the successive production of microwave signals; and, connected thereto, a frequency-selective, passive antenna arrangement, which has a number of frequency-selective elements—especially bandpass filters—in each case transmissive for one of the different wanted frequencies. Via the antennas and the frequency-selective elements, for each of the different microwave signals and its echo signal, a uniquely associated signal path is specified, via which a microwave signal is transmitted into the container and its echo signal, reflected back to the antenna arrangement, is received and fed to the measuring device electronics.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: November 11, 2014
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Peter Klofer, Winfried Mayer
  • Patent number: 8866495
    Abstract: The specification discloses a simple and effective system for tracking position and rotation of an object or portable device located within an electromagnetic field. The electromagnetic field may be produced by a primary coil, which inductively couples with one or more secondary coils located within a portable device. The relative strength of this inductive coupling may be used to determine the position, rotation, or both of the portable device relative to the primary coil.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: October 21, 2014
    Assignee: Access Business Group International LLC
    Inventors: David W. Baarman, Joshua K. Schwannecke, William T. Stoner, Jr., Scott A. Gauche, Ryan Joseph Nussbaum, Nicholas J. VanderStel, Jeffrey Lee VanOss
  • Patent number: 8854052
    Abstract: A microwave sensor assembly includes a signal processing device for generating at least one microwave signal that includes a pattern of frequencies and at least one probe coupled to the signal processing device. The probe includes an emitter configured to generate an electromagnetic field from the at least one microwave signal, wherein the emitter is detuned when an object is positioned within the electromagnetic field such that a loading signal is reflected from the emitter to the signal processing device.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 7, 2014
    Assignee: General Electric Company
    Inventors: Boris Leonid Sheikman, Steven Go
  • Publication number: 20140266248
    Abstract: A system for measuring the conductivity of a material-under-test includes a support structure, an upper magnet mounted to the support structure and a free-floating magnet below the fixed magnet. The system includes a diamagnet positioned between the fixed magnet and the free-floating magnet such that the free-floating magnet floats in the air beneath the diamagnet and a rotation detection assembly configured to detect a rotation rate of the free-floating magnet, where the rotation rate is based on a drag torque effect of a material-under-test on the free-floating magnet. The system also includes a conductivity calculation unit configured to calculate at least one of a conductivity or a resistivity of the material-under-test based on the detected rotation rate of the free-floating magnet.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Oki Gunawan
  • Patent number: 8816700
    Abstract: A partial discharge detection device for detecting and measuring partial discharges in electric systems or components, which delivers signals having a form much resembling that of the radiated pulse, for improved identification and analysis. The device is of small size, totally insulated and self-powered, and allows measurements to be performed with the highest safety with no need for direct connection, thereby allowing operators to stand at a distance and avoid any system shutdown while making measurements. Furthermore, it can also detect and deliver the sync signal, which is obtained by picking up the supply voltage of the discharge generating components.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: August 26, 2014
    Assignee: Prysmian S.p.A.
    Inventors: Antonio Di Stefano, Roberto Candela, Giuseppe Costantino Giaconia, Giuseppe Fiscelli
  • Publication number: 20140210487
    Abstract: An antenna device includes a sensor electrode having a capacitance configured to change upon an object approaching or contacting the sensor electrode, a sensor circuit electrically connected to the sensor electrode, an antenna section, and a substrate having the sensor circuit mounted thereon and having the sensor electrode fixed thereto. The sensor circuit is configured to detect the capacitance. The substrate is inserted into the antenna section. This antenna device allows components to be easily positioned during assembly.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 31, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Masahiro OHARA, Hirotaka ISHIHARA
  • Patent number: 8779778
    Abstract: Disclosed is a proximity switch provided with an actuator unit and a sensor unit. The sensor unit is provided with an antenna coil, a transmitting circuit which transmits electromagnetic waves at a constant frequency to the antenna coil, a receiving circuit which detects external signals received by means of the antenna coil, and control circuits. The actuator unit is provided with an antenna coil, a power supply circuit which rectifies an electromotive force generated in the antenna coil, and a signal processing circuit which receives power supply from the power supply circuit, performs frequency-dividing to the signals received by means of the antenna coil, and transmits the signals from the antenna coil after the frequency-dividing. The control circuit of the sensor unit has memory for registering the frequency of the signals transmitted from the actuator unit.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: July 15, 2014
    Assignee: OMRON Corporation
    Inventors: Toshiyuki Higuchi, Teruyuki Nakayama, Daichi Kamisono, Satoshi Nishiuchi, Kazunori Okamoto
  • Publication number: 20140139238
    Abstract: There is provided solution testing equipment which can detect an output variation of a THz oscillation device using a THz wave (h?) by contacting a liquid or cells on an RTD oscillation device, and can reduce the size and weight thereof. The solution testing equipment includes: a THz oscillation device configured to radiate the THz wave Is; a THz detection device configured to receive the THz wave Is; and a solution as a test object disposed on the THz oscillation device, in which the solution is tested on the basis of output characteristics of the terahertz wave varying in response to a relative permittivity of the solution.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 22, 2014
    Applicants: Kyoto University, ROHM CO., LTD.
    Inventors: Toshikazu MUKAI, Yuichi OGAWA
  • Publication number: 20140125355
    Abstract: A seat for a passenger vehicle is provided that comprises a first sensor for detecting the presence or absence of an occupant in the seat and a second sensor for validating the seat occupancy. The seat further comprises a transmitter for transmitting a signal indicative of valid occupancy of the seat. The first sensor may be a non-contact, capacitive sensor and the second sensor may comprise a near-field communication device for receiving a seat validation code. A seat validation system may be established on a passenger vehicle such as a train, wherein a central controller may report on seat occupancy status for the vehicle.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 8, 2014
    Applicant: TrainFX Ltd.
    Inventor: Zeph Grant
  • Patent number: 8710851
    Abstract: Disclosed is an SAR measurement method that is capable of securing sufficient power within a short period of time and always maintaining the intensity of measurement signals irrespective of the measurement frequency. With the SAR measurement method, a plurality of measurement modules each with a control unit for processing location information and SAR measurement values, a memory unit for storing data, an antenna for making signal transception with the external, and a storage battery charged by way of inductive power are prepared. Thereafter, the plurality of measurement modules are arranged and installed within a phantom formed with a homogeneous material that conforms to the electrical characteristics of human body tissue. An electronic product to be measured in SAR is mounted at a predetermined location of the phantom with a predetermined posture. A high frequency of several hundred megahertz (MHz) to several hundred gigahertz (GHz) is scanned toward the phantom.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: April 29, 2014
    Assignee: The Industry & Academic Cooperation in Chungnam National University (IAC)
    Inventor: Jong-Myung Woo