Of A Microwave Link Or System Patents (Class 455/67.15)
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Patent number: 12140617Abstract: An absorber device for absorbing signals is described. The absorber device has a housing with inner sides having an absorbing material. The housing is adaptable with regard to its geometry. The absorber device is portable. Moreover, a test system for testing radio frequency characteristics of a device under test is described.Type: GrantFiled: August 5, 2021Date of Patent: November 12, 2024Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Steffen Neidhardt, Gerhard Hamberger, Michael Freissl, Maximilian Bogner, Matthias Beer
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Patent number: 12143161Abstract: There is provided mechanisms for classifying microwave link data of a microwave system comprises a point-to-point wireless microwave link. The method is performed by a controller entity. The method comprises obtaining microwave link data in terms of a set of performance affecting values for the point-to-point wireless microwave link. Each performance affecting value in the set pertains to a respective performance affecting property of the point-to-point wireless microwave link. The method comprises classifying the microwave link data to operating conditions in a set of operating conditions, where each operating condition is associated with its own subset of the performance affecting properties, by for each operating condition, estimating a probability value using the performance affecting values of the subset of the performance affecting properties associated with that operating condition.Type: GrantFiled: April 8, 2020Date of Patent: November 12, 2024Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Forough Yaghoubi, Sahar Tahvili, Patrik Olesen, Martin Sjödin
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Patent number: 12025734Abstract: A radar target simulation system for simulating at least one moving radar target is disclosed. The radar target simulation system includes an analog to digital converter and at least one digital processing channel. The digital processing channel includes a delay circuit or unit, a resampling circuit or unit and a frequency shifting circuit or unit. Moreover, a method for operating a radar target simulation system is disclosed.Type: GrantFiled: July 22, 2020Date of Patent: July 2, 2024Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Oomke Weikert, Guenter Huber, Johannes Schoeller
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Patent number: 11985761Abstract: A calibration circuit board for an antenna. The calibration circuit board may include: a first metal layer configured to be grounded; a first substrate over the first metal layer; a second substrate over the first substrate; and a plurality of couplers. Each coupler may include: a transmission line provided with an input port and an output port at both ends thereof, respectively; and a coupling line coupled with the transmission line and including two first portions respectively located at both sides of the transmission line, and a second portion connected between the two first portions. The coupling lines may be connected in series to provide a first calibration port and a second calibration port. One of the transmission lines and the coupling lines may be between the first substrate and the second substrate, and the other of the transmission lines and the coupling lines may be over the second substrate.Type: GrantFiled: May 12, 2021Date of Patent: May 14, 2024Assignee: CommScope Technologies LLCInventors: Xiaotuo Wang, Hangsheng Wen, Xun Zhang, Changfu Chen
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Patent number: 11908660Abstract: A method for optimizing delivery of power to a plasma chamber is described. The method includes dividing each cycle of a low frequency (LF) radio frequency generator (RFG) into multiple time intervals. During each of the time intervals, a frequency offset of a high frequency (HF) RFG is generated for which the delivery of power is maximized. The frequency offsets provide a substantially inverse relationship compared to a voltage signal of the LF RFG for each cycle of the voltage signal. The frequency offsets for the time intervals are multiples of the low frequency. The substantially inverse relationship facilitates an increase in the delivery of power to the electrode. A total range of the frequency offsets from a reference HF frequency over the LF RF cycle depends on a power ratio of power that is supplied by the LF RFG and power that is supplied by the HF RFG.Type: GrantFiled: March 9, 2022Date of Patent: February 20, 2024Assignee: Lam Research CorporationInventors: Ranadeep Bhowmick, John Holland, Felix Leib Kozakevich, Bing Ji, Alexei Marakhtanov
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Patent number: 10996263Abstract: The present invention provides a frontend module for a modular configuration of a frontend. Each of the frontend modules is configured to achieve a configuration for combining multiple frontends. In particular, multiple signals relating to a relative small frequency range may be combined together to achieve a broadband test signal. For this purpose, radio frequency interfaces are provided in the frontend module for exchanging/distributing radio-frequency signals between the individual frontend modules.Type: GrantFiled: November 28, 2018Date of Patent: May 4, 2021Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Gottfried Holzmann, Albert Moser, Peter Ludwig
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Patent number: 10659173Abstract: A digital isolator module for high level common mode transient immunity is provided, comprising a transmitter circuit (TX), a receiver circuit (RX) and an isolation barrier which is connected there in between, wherein the transmitter circuit is electrically connected to a first ground voltage level and the receiver circuit is electrically connected to a second ground voltage level. The receiver circuit further comprises a resistance set, a high speed detector and a demodulator. By employing the proposed circuit diagram of the invention, interferences occurring at the common mode are suppressed and an RX output signal is synchronized with its input signal without having propagation delay.Type: GrantFiled: July 18, 2019Date of Patent: May 19, 2020Assignee: AMAZING MICROELECTRONIC CORP.Inventors: Guan-Shun Li, Szu-Hsien Wu
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Patent number: 9978712Abstract: A multichip module (MCM) device include a first die including functional circuitry bonded by a plurality of inter-die bond wires (bond wires) to a second die having functional circuitry. A first channel (Channel A) and second channel (Channel B) each have separate top and bottom signal paths (signal paths) including one of the bond wires. A failure of any of the signal paths does not affect functionality of the device. The first die includes input pins including a first input pin (P1), a second input pin (P2), and coupling circuitry including cross-channel test circuitry positioned between the input pins and the functional circuitry. The coupling circuitry provides for Channel A and Channel B a first configuration for normal mode operation and a second configuration for test mode operation for single bond wire testing for checking continuity of any of the bond wires.Type: GrantFiled: May 25, 2016Date of Patent: May 22, 2018Assignee: Texas Instruments IncorporatedInventors: Danyang Zhu, Zhuang Ma, Xinyu Yin, Michael Dean Shilhanek, Steven Bolen, Albert Eardley, Abha Singh Kasper
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Patent number: 9900043Abstract: Embodiments of the present invention provide a radio frequency transmit-receive apparatus, a terminal, and a method. The radio frequency transmit-receive apparatus according to the present invention includes: a first antenna unit, a duplexer, a radio frequency unit, and a signal selecting unit. The embodiments of the present invention can solve a problem of inflexible uplink and downlink resource configuration in a radio frequency transmit-receive apparatus in the prior art.Type: GrantFiled: October 14, 2016Date of Patent: February 20, 2018Assignee: Huawei Technologies Co., Ltd.Inventors: Zhigang Liu, Shanqing Zeng, Shutian Yuan
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Patent number: 8954014Abstract: A testing system comprises a noise source coupled to at least two antenna elements. The noise source forms a total noise power on the basis of a total signal power received by the emulator, a gain of at least one antenna-specific channel between the emulator and the antenna elements, and a desired signal-to-noise ratio. The noise source transmits noise at the total noise power from the at least two antenna elements to the device under test wirelessly.Type: GrantFiled: October 26, 2009Date of Patent: February 10, 2015Assignee: Anite Telecoms OyInventors: Pekka Kyösti, Jukka-Pekka Nuutinen, Tommi Jämsä
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Patent number: 8935122Abstract: An alignment device provides position information for an antenna coupled to an extendable tower. The alignment device can provide position data including pitch data, roll data, and azimuth data. The position data can be collected at multiple times, and reported to a remote computing device. The position data can be reported as the raw measured data, a delta between two sets of position data, or other data. The alignment device may be solar powered and include a transceiver client for communicating with a remote computing device via a transceiver server.Type: GrantFiled: December 5, 2011Date of Patent: January 13, 2015Assignee: US Tower Corp.Inventor: Daryl A. Stisser
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Patent number: 8892035Abstract: Exemplary embodiments are directed to wireless power transfer. A wireless power transfer system include a transmit circuit with a transmit antenna driven from a power amplifier to generate a near field radiation at a resonant frequency within a first coupling mode region surrounding the transmit antenna. One or more repeater antennas are disposed at different locations within the first coupling mode region. Each repeater antenna generates an enhanced near field radiation at the resonant frequency within a coupling mode region corresponding to that repeater antenna. One or more receive circuits including a receive antenna receive power when they are disposed in one of the coupling mode regions corresponding to that repeater antenna.Type: GrantFiled: December 16, 2013Date of Patent: November 18, 2014Assignee: QUALCOMM IncorporatedInventors: Alireza Hormoz Mohammadian, Ernest T. Ozaki, Matthew S. Grob
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Patent number: 8886179Abstract: A fault remediation system for fielded wireless mobile devices addresses field failure data collection, consolidation of field failure data, and an information services platform so that the players in a wireless/mobile broadcast/broadband application/service value chain to respond to field failure problems in a consistent and automated manner from wireless/mobile devices over wireless multicast and or wireless broadband networks. An elegant and extremely flexible mechanism enables the failure data collection from a targeted set of wireless/mobile devices. In addition, sophisticated mechanisms identify targeted set of devices that should participate in field failure data collection based on user specified operational requirements (e.g., selected OEM, device configuration type, subscribers to a specific wireless broadband serve, failure occurrence certain time limits, etc.).Type: GrantFiled: October 23, 2007Date of Patent: November 11, 2014Assignee: QUALCOMM IncorporatedInventors: Hanumantha R. Pathuri, Ramesh Sathyanarayana
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Patent number: 8879998Abstract: Disclosed is a device and method to automate the process of measuring RF noise, correlating measured noise with known sources, and making adjustments to the noise-measuring and reporting process. A wireless communication device is coupled to equipment at a fixed location, and transmits data about the operation of the equipment back to an operator, via a provider's network. Examples include fixed wireless terminals. A management entity aboard the wireless communication device performs the measurements via a transceiver and performs remedial actions when required, without requiring an onsite technician or remote assistance. The management entity may include a spectrum analyzer.Type: GrantFiled: May 2, 2014Date of Patent: November 4, 2014Assignee: AT&T Mobility II LLCInventor: Scott D. Prather
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Patent number: 8774730Abstract: A field programmable microwave array is provided. The field programmable microwave array includes one or more RF elements interconnected by an array of switching elements. The switching elements enable the field programmable microwave array to perform one or more RF or microwave subassembly functions.Type: GrantFiled: January 12, 2012Date of Patent: July 8, 2014Assignee: Lockheed Martin CorporationInventors: Frank Chethik, Timothy A. Becker
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Patent number: 8718566Abstract: Disclosed is a device and method to automate the process of measuring RF noise, correlating measured noise with known sources, and making adjustments to the noise-measuring and reporting process. A wireless communication device is coupled to equipment at a fixed location, and transmits data about the operation of the equipment back to an operator, via a provider's network. Examples include fixed wireless terminals. A management entity aboard the wireless communication device performs the measurements via a transceiver, and performs remedial actions when required, without requiring an onsite technician or remote assistance. The management entity may include a spectrum analyzer.Type: GrantFiled: August 21, 2012Date of Patent: May 6, 2014Assignee: AT&T Mobility II LLCInventor: Scott D. Prather
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Patent number: 8706068Abstract: Methods and apparatus in a mobile receiver for selecting among methods of estimating a received power of at least one signal. A method includes selecting a first method or a second method of measuring the received power based on a cell timing and a measurement interval. Information is received from a first base station about the measurement interval during which to perform the first method and the second method on a signal transmitted by at least one second base station. The timing of the at least one second base station is determined, and based on the timing of the at least one second base station and the measurement interval, one of the first method and the second method is selected.Type: GrantFiled: April 9, 2009Date of Patent: April 22, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Jose Flordelis, Joakim Axmon, Bengt Lindoff
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Patent number: 8611830Abstract: Various embodiments relate to an apparatus that converts between CFP signals and electrical CXP signals. Circuitry compensates for attenuation of a CXP interconnect connected to a CXP transceiver port, and converts between (i) electrical CXP signals of the CXP transceiver port (the electrical CXP signals compliant with the CXP specification), and (ii) CFP signals of the CFP transceiver port (the CFP signals compliant with the CFP specification).Type: GrantFiled: December 15, 2011Date of Patent: December 17, 2013Assignee: Spirent Communications, Inc.Inventors: Gabriel K. Au, Robert D. Yamashita, Kin Ho Tung
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Patent number: 8611815Abstract: Exemplary embodiments are directed to wireless power transfer. A wireless power transfer system include a transmit circuit with a transmit antenna driven from a power amplifier to generate a near field radiation at a resonant frequency within a first coupling mode region surrounding the transmit antenna. One or more repeater antennas are disposed at different locations within the first coupling mode region. Each repeater antenna generates an enhanced near field radiation at the resonant frequency within a coupling mode region corresponding to that repeater antenna. One or more receive circuits including a receive antenna receive power when they are disposed in one of the coupling mode regions corresponding to that repeater antenna.Type: GrantFiled: November 6, 2008Date of Patent: December 17, 2013Assignee: Qualcomm IncorporatedInventors: Alireza Hormoz Mohammadian, Ernest T. Ozaki, Matthew S. Grob
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Patent number: 8600371Abstract: An apparatus for determining a health of radio-frequency transmitters each transmitting a transmitted signal during normal operation. The apparatus comprises a receiver for receiving received signals, each received signal responsive to a transmitted signal, a first element for determining signal parameters of each received signal, the signal parameters responsive to an operating condition of a transmitter, each transmitted signal and each associated received signal including an identifier of the transmitter that transmitted the transmitted signal, the apparatus using the identifier to link determined signal parameters with the transmitter that transmitted the transmitted signal and a second element for determining a health of the transmitter that transmitted the transmitted signal, the health responsive to a relationship between one or more signal parameters and a selected value or a range of selected values for each signal parameter.Type: GrantFiled: May 12, 2011Date of Patent: December 3, 2013Assignee: Locus Location Systems LLCInventors: Danny Caudill, Michael Keefe, Charna Parkey, Robert Mitchell, Murad Qahwash, John McCarthy
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Patent number: 8588694Abstract: The present invention relates to a method and arrangement in a transmitter unit of a multi-antenna system for an improved calculating of the antenna weights for a beamforming transmission of data from a transmitter unit to a target receiver unit, whereby interfering signal components for receiving units other than the target receiving unit and the desired communication signal at a target receiving unit are weighted by receiver-specific parameters describing the receiver capabilities of said units in terms of their capability for interference suppression and/or signal enhancement. The invention also relates to a method and arrangement for scheduling of user equipments by using said information on the signal processing capabilities for received signals of each receiving unit.Type: GrantFiled: July 19, 2007Date of Patent: November 19, 2013Assignee: Telefonaktiebolaget LM EricssonInventors: Bo Goransson, Sven Petersson, Stefan Felter
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Patent number: 8564091Abstract: Some of the embodiments of the present disclosure provide a semiconductor package comprising a first die; a second die; and an inductor arrangement configured to inductively couple the first die and the second die while maintaining electrical isolation between active circuit components of the first die and active circuit components of the second die. Other embodiments are also described and claimed.Type: GrantFiled: June 17, 2010Date of Patent: October 22, 2013Assignee: Marvell World Trade Ltd.Inventor: Sehat Sutardja
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Patent number: 8559886Abstract: The present invention relates to a communication transmission field, and particularly provides a device, a method, and a system for aligning an antenna. The method includes steps as follows. An input signal is received, and a receiver signal strength indication (RSSI) value is output according to a strength of the input signal. The RSSI value is received, and a practically received power value corresponding to the input signal is acquired by looking up a corresponding table between the RSSI and power. An antenna rotation signal and an alignment indication signal are output. The antenna is adjusted according to the antenna rotation signal so as to change a receiving angle of the antenna. Then, it is displayed that the antenna is aligned according to the alignment indication signal. In the present invention, the man-made operation errors are reduced, thus the network quality is effectively ensured.Type: GrantFiled: June 29, 2009Date of Patent: October 15, 2013Assignee: Huawei Technologies Co., Ltd.Inventor: Guixue Zhao
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Patent number: 8538342Abstract: To provide good communication quality inside a building while suppressing interference exerted on communication of other radio stations by radio waves leaked outside the building. A femto base station 1 performs radio communication with mobile stations 6-1 and 6-2. The femto base station 1 includes a radio resource control unit 15. The radio resource control unit 15 obtains a measured value of a reception quality level that is obtained by the femto base station 1 and the mobile stations 6-1 and 6-2 by measuring the reception quality level of an external radio signal S1. Further, the radio resource control unit 15 determines a radio parameter relating to radio communication between the femto base station 1 and the mobile stations 6-1 and 6-2 based on a relative comparison between a plurality of reception quality levels. The external radio signal S1 is a radio signal transmitted from an external radio station 9 that is different from any of the femto base station 1 and the mobile stations 6-1 and 6-2.Type: GrantFiled: February 20, 2009Date of Patent: September 17, 2013Assignee: NEC CorporationInventors: Motoki Morita, Kojiro Hamabe
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Patent number: 8538329Abstract: A sensing and recovery system includes a sensing unit and a recovery unit coupled together. The sensing unit includes a sensor to generate a bandlimited continuous time analog signal, and a modulator coupled to the sensor to generate a modulated analog signal based upon modulation of the bandlimited continuous time analog signal at a modulating rate at least equal to a Nyquist rate for the bandlimited continuous time analog signal. A compressive sensing circuit is coupled to the modulator to generate a compressed sensed signal based upon conversion of the modulated analog signal at a sampling rate less than the Nyquist rate. The recovery unit recovers the bandlimited continuous time analog signal from the compressed sensed signal.Type: GrantFiled: December 8, 2011Date of Patent: September 17, 2013Assignee: Harris CorporationInventors: Edward R. Beadle, Charles Zahm
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Patent number: 8515356Abstract: In a radio communication system (1), a lower-level station (10a) has: a lower-level station ID detection unit (13) which detects a lower-level station ID for identifying another lower-level station (10b), from a signal from the other lower-level station (10b); a group ID detection unit (12) which identifies a group ID for identifying a group to which the other lower-level station (10b) belongs; a measurement unit (15) which measures a channel utilization state of the other lower-level station (10b); a utilization probability update unit (19) which calculates a channel utilization amount for each lower-level station and a channel utilization amount for each group based on the lower-level station ID, group ID and channel utilization state, and updates a channel utilization probability which indicates the utilization probability of communication channels based on the channel utilization amount for each lower-level station and the channel utilization amount for each group; and a channel determination unit (20) whType: GrantFiled: February 4, 2008Date of Patent: August 20, 2013Assignee: NTT DoCoMo, Inc.Inventors: Takefumi Yamada, Takahiro Asai
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Patent number: 8515416Abstract: In a radio device such as a receiver or transceiver, a test operation can be performed to determine performance. A received signal can be processed to obtain demodulated samples, which can be provided to a logic to perform a logic operation on the samples to generate a logic output. A storage such as a counter or other mechanism is coupled to the logic to store a count of a number of the logic outputs having an error.Type: GrantFiled: April 29, 2011Date of Patent: August 20, 2013Assignee: Silicon Laboratories IncInventor: Hendricus De Ruijter
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Patent number: 8494030Abstract: Aspects of a method and system for 60 GHz wireless clock distribution may include configuring a microwave communication link established between a first chip and a second chip via a wireline communication bus. The configuration may comprise adjusting beamforming parameters of a first antenna array communicatively coupled to the first chip, and of a second antenna array communicatively coupled to the second chip. The first chip and the second chip may communicate a clock signal via the microwave communication link. The microwave communication link may be routed via one or more relay chips, when the first chip and the second chip cannot directly communicate. Control data may be transferred between the first chip, the second chip, and/or the one or more relay chips, which may comprise one or more antennas. The relay chips may be dedicated relay ICs or multi-purpose transmitter/receivers.Type: GrantFiled: August 15, 2008Date of Patent: July 23, 2013Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8493271Abstract: An electromagnetic radiation measuring device includes a test antenna module and a main processor electrically connected to the test antenna module. The test antenna module includes a plurality of pre-test antennas and at least one final test antenna, which have predetermined polarities and are positioned at predetermined heights, respectively. The pre-test antennas and the final test antenna respectively receive wireless signals sent from an electronic device. The main processor measures and records a frequency of the strongest wireless signal received by selected ones of the pre-test antennas that have the same polarity, and further determines whether power of wireless signals at the recorded frequency received by the final test antenna polarized to have the same polarity as that of the selected ones of the pre-test antennas exceeds a predetermined acceptable range.Type: GrantFiled: August 30, 2011Date of Patent: July 23, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventor: Xiao-Lian He
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Publication number: 20130137381Abstract: A communication system includes a conversion module configured to convert a signal between a radio frequency baseband (RF-BB) and an intermediate frequency (IF). At least one RF front-end module converts the signal between the IF and a radio frequency (RF). The RF front-end module is configured as an RF phased array and includes a coaxial interconnect configured to connect the conversion module with the RF front-end module. The signal is transmitted between the conversion module and the RF-front end module via the coaxial interconnect. At least one RF front-end module includes an active front-end (AFE) configured to allow the signal to be transmitted via the coaxial interconnect while minimizing any deterioration of the signal.Type: ApplicationFiled: March 30, 2012Publication date: May 30, 2013Applicant: Broadcom CorporationInventors: Iason VASSILIOU, Michael BOERS, Sean NICOLSON, Brima Ibrahim, Spyridon Kavvadias
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Patent number: 8447293Abstract: Methods and apparatus to monitor communication system transceivers are disclosed. For example, the disclosed system may determine the number and locations of available cellular stations. An example method includes receiving a first message from a base station, receiving a second message from the base station, extracting a first parameter from the first message, extracting a second parameter different from first parameter from the second message, determining if the first message and the second message were received from the same base station based on the first parameter and the second parameter, and reporting that the first message and the second message were from the same base station if the first message and the second message were received from the same base station. Some implementations of the disclosed methods and apparatus enable pseudorandom number codes received over-the-air from base stations to be grouped by base station.Type: GrantFiled: June 17, 2008Date of Patent: May 21, 2013Assignee: The Nielsen Company (US), LLCInventors: Padraig Stapleton, Hing On Ngai, Benjamin Ip
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Patent number: 8442443Abstract: The present invention relates to a method which analysis the characteristics of the received signal and selects the best beam arrangement for a transmitter/receiver pair for a given situation in a communication system. In particular, the channel delay profile provides characteristics which help to determine and evaluate the quality of a signal link. The result of this evaluation is used for selecting the best beam arrangement.Type: GrantFiled: January 5, 2010Date of Patent: May 14, 2013Assignee: Sony CorporationInventors: Richard Stirling-Gallacher, Juán Nogueira-Nine
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Patent number: 8442546Abstract: A radio base station (eNB) according to the present invention includes: a calculation unit (12) configured to calculate an adjusted value of a reception quality, based on the reception quality in a specific mobile station in at least one first resource block assigned to the specific mobile station in a PUSCH, and the number of resource elements assigned to transmission of dedicated control information in the first resource blocks; and a selection unit (13) configured to select, based on the adjusted value of the reception quality, the number of bits which can be transmitted and a modulation scheme that should be used in the first resource blocks.Type: GrantFiled: December 18, 2009Date of Patent: May 14, 2013Assignee: NTT DoCoMo, Inc.Inventors: Yoshiaki Ofuji, Hiroyuki Ishii, Naoto Okubo
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Patent number: 8428539Abstract: An apparatus comprising a functional circuitry on a first die. Said function circuitry configured to drive an RF voltage isolation link with an RF signal responsive to receipt of a logic signal at a first logic state. Control circuitry modifies the frequency of the RF signal to spread harmonics to other than a fundamental frequency.Type: GrantFiled: January 19, 2010Date of Patent: April 23, 2013Assignee: Silicon Laboratories Inc.Inventor: Timothy Dupuis
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Patent number: 8412109Abstract: The method relates to a method of characterizing a radio link. In the method, a radio frequency interrogator and a first radio frequency transponder, the response of which in an essentially anechoic chamber is known, are utilized. According to the invention, the response of the first radio frequency transponder is measured in a target environment in the chosen interrogator-transponder geometry and the responses of the radio frequency transponder in the target environment and in an essentially anechoic chamber are compared for characterizing the actual radio link. The invention provides information on multi-path propagation of radio waves characteristic to the target environment, which can be further taken into account in, for example, RFID system design.Type: GrantFiled: February 18, 2008Date of Patent: April 2, 2013Assignee: Voyantic OyInventors: Jukka Voutilainen, Juho Partanen, Jesse Tuominen
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Patent number: 8385839Abstract: A method for communication includes transmitting data from a transmitter to a receiver using Adaptive Coding and Modulation (ACM). The data rate is set by selecting, based on feedback, an ACM profile defining a Forward Error Correction code and a modulation scheme. Upon detecting that the feedback is unusable, an operation of the transmitter is changed independently of the feedback. In another method, data is exchanged over two opposite directions of a bidirectional link that uses ACM by communicating using two ACM profiles. A joint constraint is defined on the two directions. The two ACM profiles are set based on first and second measured reception quality metrics of the two link directions, to meet the joint constraint. In yet another method, a subset of the ACM profiles is temporarily disabled, and the data is transmitted using only the ACM profiles that are not disabled.Type: GrantFiled: March 31, 2010Date of Patent: February 26, 2013Assignee: Provigent Ltd.Inventors: Ehud Ashkenazi, Jonathan Friedmann
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Patent number: 8374652Abstract: A system for terminating a receive correlation window of a receiving wireless device includes a radio frequency receiver configured to open a receive correlation window having a predetermined duration and an energy measurement circuit configured to measure a radio frequency energy level ambient to the wireless receiver. A comparator is included that is configured to determine, based on the measured radio frequency energy level, whether or not a signal is being transmitted from a nearby wireless device. The receiver is further configured to close the receive correlation window before the predetermined duration is reached in response to a determination by the comparator that no signal is being transmitted by a nearby device. If a signal is being transmitted, then the receive correlation window is allowed to proceed uninterrupted.Type: GrantFiled: February 18, 2011Date of Patent: February 12, 2013Assignee: Texas Instruments IncorporatedInventors: Yaniv Tzoreff, Ronen Isaac, Ran Katz, Matan Ben-Shachar
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Patent number: 8364090Abstract: Generating a radio frequency test signal for a mobile wireless communication device from a set of scanned radio frequency data that represents a plurality of radio frequency channels over a sequence of time intervals. A segment of the set of scanned radio frequency data over a time interval is classified into one of several radio frequency environments. A subset of the segment of scanned radio frequency data is selected based on the classified radio frequency environment. A segment of the radio frequency test signal is generated using the selected subset of scanned radio frequency data. The steps of classifying, selecting and generating are repeated for each time interval in the sequence of time intervals. Classifying the segment of scanned radio frequency data into a radio frequency environment includes comparing a set of statistics extracted from the segment of scanned radio frequency data to pre-defined classification ranges.Type: GrantFiled: April 15, 2010Date of Patent: January 29, 2013Assignee: Apple Inc.Inventors: Venkatasubramanian Ramasamy, Srinivasan Vasudevan
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Patent number: 8364179Abstract: A method for communication includes transmitting data from a transmitter to a receiver using Adaptive Coding and Modulation (ACM). The data rate is set by selecting, based on feedback, an ACM profile defining a Forward Error Correction code and a modulation scheme. Upon detecting that the feedback is unusable, an operation of the transmitter is changed independently of the feedback. In another method, data is exchanged over two opposite directions of a bidirectional link that uses ACM by communicating using two ACM profiles. A joint constraint is defined on the two directions. The two ACM profiles are set based on first and second measured reception quality metrics of the two link directions, to meet the joint constraint. In yet another method, a subset of the ACM profiles is temporarily disabled, and the data is transmitted using only the ACM profiles that are not disabled.Type: GrantFiled: March 31, 2010Date of Patent: January 29, 2013Assignee: Provigent Ltd.Inventors: Ehud Ashkenazi, Jonathan Friedmann
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Patent number: 8326329Abstract: The present invention relates to a new method for localization, i.e. finding positions and orientations of nodes communicating in wireless networks. The method is based on using directional information (angle-of-arrival, AOA), and optionally distance information, combined with estimation by recursive filters such as e.g., Kaiman filters, recursive least squares filters, Bayesian filters, or particle filters. The method expresses the localization problem as set of linear equations and ensures stability and convergence by imposing a partial order on the nodes.Type: GrantFiled: March 27, 2009Date of Patent: December 4, 2012Assignee: SICS, Swedish Institute of Computer Science ABInventor: Martin Nilsson
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Patent number: 8315574Abstract: A method for communication includes transmitting data from a transmitter to a receiver using Adaptive Coding and Modulation (ACM). The data rate is set by selecting, based on feedback, an ACM profile defining a Forward Error Correction code and a modulation scheme. Upon detecting that the feedback is unusable, an operation of the transmitter is changed independently of the feedback. In another method, data is exchanged over two opposite directions of a bidirectional link that uses ACM by communicating using two ACM profiles. A joint constraint is defined on the two directions. The two ACM profiles are set based on first and second measured reception quality metrics of the two link directions, to meet the joint constraint. In yet another method, a subset of the ACM profiles is temporarily disabled, and the data is transmitted using only the ACM profiles that are not disabled.Type: GrantFiled: April 13, 2007Date of Patent: November 20, 2012Assignee: Broadcom CorporationInventors: Ehud Ashkenazi, Jonathan Friedman
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Patent number: 8275321Abstract: An electrical circuit comprises a source of an interferer signal; at least one component configured for using the signal; at least two electrically parallel conductive paths by which the signal can pass between the source and each of the at least one components; and a signal path selector configured to selectively enable the signal to pass from the source to the component by any of the at least two conductive paths and to, when one of the paths is enabled to carry the signal, disable each of the other at least two paths from carrying the signal.Type: GrantFiled: August 22, 2008Date of Patent: September 25, 2012Assignee: Cambridge Silicon Radio LimitedInventors: Ian Sabberton, Paul Christopher Egan
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Patent number: 8249512Abstract: Disclosed is a device and method to automate the process of measuring RF noise, correlating measured noise with known sources, and making adjustments to the noise-measuring and reporting process. A wireless communication device is coupled to equipment at a fixed location, and transmits data about the operation of the equipment back to an operator, via a provider's network. Examples include fixed wireless terminals. A management entity aboard the wireless communication device performs the measurements via a transceiver, and performs remedial actions when required, without requiring an onsite technician or remote assistance. The management entity may include a spectrum analyzer.Type: GrantFiled: June 18, 2010Date of Patent: August 21, 2012Assignee: AT&T Mobility II LLCInventor: Scott D. Prather
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Patent number: 8244287Abstract: A radio and antenna system has a first microwave radio, second microwave radio, a first antenna and a dual mode coupler that has a first dual mode transmission line extending between a first port and a third port and a second dual mode transmission line extending between a second port and a microwave absorbing termination. The first microwave radio is coupled to the first port. The second microwave radio is coupled to the second port. The antenna is coupled to the third port. The first dual mode transmission line is coupled to the second dual mode transmission line so that microwave signals in either of the first dual mode transmission line and the second dual mode transmission line propagates microwave signals in the other of the first dual mode transmission line and the second dual mode transmission line.Type: GrantFiled: October 29, 2009Date of Patent: August 14, 2012Assignee: Z-Communications, Inc.Inventors: Behzad Tavassoli Hozouri, Vasanth Munikoti, Mahadevan Sridharan
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Patent number: 8165531Abstract: A wave-potential detector and a wave-potential radiator are provided that detect and radiate wave-potential signals having longitudinally polarized A vectors, respectively. Wave-potential receivers and transmitters incorporating the wave-potential detector and wave-potential radiator, respectively, are also provided. The wave-potential detector includes a biased plasma device, having at least a portion of its bias current that is parallel to the direction of propagation of a wave-potential signal having a longitudinally polarized A vector. Both omnidirectional and directive wave-potential radiators are provided.Type: GrantFiled: August 1, 2008Date of Patent: April 24, 2012Assignee: McMaster UniversityInventors: Natalia K. Nikolova, Robert K. Zimmerman, Jr.
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Patent number: 8160502Abstract: The present invention provides a system for wide-range microwave communications over wireline networks. In an exemplary embodiment, a wide-range transceiver is made having pre-calibrated modular units including an IF radio processing card, an RF transmitter module, and an RF receiver module. Calibration factors are loaded into a memory (e.g., EEPROM) in each module during production. Certain additional calibration factors may also be loaded upon installation, such as a one time calibration for the type and length of cable connecting the RF unit to a remote SPU (signal processing unit). A processor in the RF unit is responsive to control signaling indicating a desired transmitter or receiver configuration (e.g., a particular frequency, bandwidth and modulation), to attenuate the signal in the transmitter/receiver path based on the predetermined calibration factors from the applicable modules. A method for calibrating the modules is also disclosed.Type: GrantFiled: April 5, 2010Date of Patent: April 17, 2012Assignee: Harris Stratex Networks, Inc.Inventors: Ying Shen, Guy Theberge, San Jao, Fabio Concilio, Shauen Thomas Trump, Don E. Peck
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Patent number: 8150331Abstract: A method for adapting the signal transmission between two electronic devices (1, 2) that are connected to each other via a physical interface and that each have a transmitter (8a, 8b) and a receiver (7a, 7b), wherein analog signals are transmitted from the transmitter (8a, 8b) of one device (1, 2) along a transmission path (9a, 9b) to the receiver (7a, 7b) of the other device (1, 2). Known scattering parameters (10a, 10b, 10c, 11d) for describing the electromagnetic wave propagation in the transmission path (9a, 9b) between the receiver (7a, 7b) of the first device (1, 2) and the transmitter (8a, 8b) of the second device (1, 2) are retrieved by the first device (1, 2), transmitted to the second device (1, 2), and parameters of the transmitter (8a, 8b) in the second device (1, 2) are adapted with reference to a high-frequency description of the transmission path (9a, 9b) as a function of all of the scattering parameters (10a to 10d, 11a to 11d) known to the two devices.Type: GrantFiled: June 15, 2010Date of Patent: April 3, 2012Assignee: Fujitsu Technology Solutions Intellectual Property GmbHInventor: Robert Depta
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Patent number: 8126404Abstract: To evaluate an energy level of a signal received through a radio interface between radiocommunication stations, successive measurement samples depending on the energy of the signal are obtained, and an average of said samples is calculated, to evaluate the energy level. The calculation of the average of the samples is performed with an averaging duration depending on a service to which the received signal pertains.Type: GrantFiled: November 7, 2001Date of Patent: February 28, 2012Assignee: Alcatel LucentInventors: Nidham Ben Rached, Thierry Lucidarme, Arnaud De Lannoy
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Patent number: 8090411Abstract: A lens-based millimeter wave transceiver for use in wireless communication systems operating in the E-band spectrum consistent with the FCC rules regulating the 71-76 GHz and 81-86 GHz bands. The transceiver includes a single lens adapted for transmission of millimeter radiation to form communication beams in one band of either a band of about 71-76 GHz or a band of 81-86 GHz and for collection and focusing of millimeter wave radiation from communication beams in the other of the two bands. It includes a feed horn adapted to broadcast millimeter radiation through said single lens and to collect incoming millimeter wave radiation collected and focused by said single lens. A millimeter wave diplexer separates incoming and outgoing millimeter wave radiation.Type: GrantFiled: December 24, 2007Date of Patent: January 3, 2012Assignee: Trex Enterprises CorpInventors: Eric Korevaar, Eduardo Tinoco, Richard Chedester, Vladimar Kolinko
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Patent number: 8090379Abstract: A communication system providing wireless communication among wireless users through a number of cellular base stations, each including at least transport management equipment and broadband equipment, at least one of which supports at least remote cellular station including RF equipment for communication with users of cellular devices. The system includes at lease one wireless narrow beam communication link operating at millimeter wave frequencies in excess of 60 GHz connecting a remote cellular station with a cellular base station equipped with broad band conversion electronic equipment and transport management equipment. In preferred embodiment the communication system includes a large number of remote cellular stations with each remote cellular station serving a separate communication cell.Type: GrantFiled: January 29, 2008Date of Patent: January 3, 2012Assignee: Trex Enterprises CorpInventors: Thomas Lambert, Paul Johnson, Eric Korevaar, Eduardo Tinoco