公开(公告)号：US09893715B2

公开(公告)日：2018-02-13

申请号：US14100716

申请日：2013-12-09

申请人： Shure Acquisition Holdings, Inc.

发明人： Christopher Zachara

IPC分类号： H03J3/02 ,  H04B7/02 ,  H01Q1/22 ,  H01Q9/14 ,  H01Q21/28

CPC分类号： H03J3/02 ,  H01Q1/22 ,  H01Q9/145 ,  H01Q21/28 ,  H04R2420/07

摘要： Adaptive self-tunable antenna systems and methods are provided including a closed-loop system for sensing near-field RF signals of transmitted RF signals and tuning an antenna or switching between multiple antennas, so that the strength of the transmitted RF signals is maximized. A sensing antenna detects the near-field RF signal, which is filtered and converted to an RF strength control signal that can be used to generate an antenna tuning control signal. An antenna tuner uses the antenna tuning control signal to keep the antenna in resonance by dynamically changing the electrical length of the antenna or switching between multiple antennas to maximize the strength of the radiated RF signal. Such antennas may be less prone to detuning due to interaction with human bodies or other objects. Dynamically matching the antennas to an RF power amplifier and low noise amplifier can improve stability, power efficiency, gain, noise figure, and receiver sensitivity.

公开(公告)号：US20180018743A1

公开(公告)日：2018-01-18

申请号：US15647299

申请日：2017-07-12

申请人： Schneider Electric Industries SAS

发明人： Michel CLEMENCE ,  Philippe DESCHAMPS ,  Yves CHOLLOT ,  Clementine BENOIT

IPC分类号： G06Q50/06 ,  G06Q10/06 ,  H03J3/14

CPC分类号： G06Q50/06 ,  G06F17/5009 ,  G06Q10/06375 ,  H02J3/00 ,  H02J2003/007 ,  H03J3/14 ,  Y02E60/76 ,  Y04S40/22

摘要： A method for constructing a predictive model of a change of state of an electrical distribution network, the electrical distribution network including a node supplying power to loads connected by way of a distribution line, the method including: a. a step of measuring the variation, during a first time period, of a physical quantity A at the main node, and of a physical quantity B at measuring points of the network; and b. a step of correlating the quantity A and the quantity B measured in step a., so that knowledge of the physical quantity A at the main node allows the value of the physical quantity B at the plurality of measuring points of the network to be predicted.

公开(公告)号：US09870074B2

公开(公告)日：2018-01-16

申请号：US14903625

申请日：2013-07-10

申请人： Thales Holdings UK Plc

发明人： David Robbins

IPC分类号： G06F3/0362 ,  B64D43/00 ,  G06F3/0484 ,  H03J1/04

CPC分类号： G06F3/0362 ,  B64D43/00 ,  G06F3/04847 ,  H03J1/047

摘要： A control unit is provided with a selector and a plurality of value indicators. One of the value indicators provides a coarse indication of an existing value of an adjustable control quantity. The other value indicators are in another state, distinguishable from the value indicating state. A rotary adjustor provides a manual adjustment facility for a user. Selection of the selector puts the adjustable control quantity in an adjustment mode. In this adjustment mode, rotary actuation of the rotary adjustor allows adjustment of the control quantity. A new value of the control quantity is indicated by a change in the display states of the value indicators.

公开(公告)号：US20180006606A1

公开(公告)日：2018-01-04

申请号：US15609041

申请日：2017-05-31

申请人： Intel IP Corporation

发明人： Andreas Menkhoff ,  Zdravko Boos

IPC分类号： H03D7/16 ,  H03J1/00 ,  H03B21/02 ,  H04B1/403 ,  H04B1/00

CPC分类号： H03D7/16 ,  G06F1/022 ,  H03B21/02 ,  H03D7/163 ,  H03J1/0033 ,  H04B1/005 ,  H04B1/406

摘要： A radio frequency signal synthesizer circuit includes a digital to analog converter configured to generate an analog output signal for each clock cycle of a clock signal to provide the radio frequency signal and a controlled oscillator to generate the clock signal. The controlled oscillator is configured to vary a cycle time of the clock signal for a radio frequency signal in a first frequency range in a first operation mode or to maintain a constant cycle time for a radio frequency signal in a second frequency range in a second operation mode, the second frequency range being different than the first frequency range.

公开(公告)号：US20170373671A1

公开(公告)日：2017-12-28

申请号：US15628668

申请日：2017-06-21

申请人： WILLIAM REDMAN-WHITE

发明人： WILLIAM REDMAN-WHITE

IPC分类号： H03J5/24 ,  H03J1/06

CPC分类号： H03J5/244 ,  G06K7/10148 ,  H02J7/025 ,  H02J50/12 ,  H03J1/06 ,  H03J5/24 ,  H03J2200/06 ,  H03J2200/10 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0075

摘要： A system is described for maintaining an inductive-capacitive (LC) network at resonance while the excitation frequency may be varied between a number of discrete frequencies at desired instants controlled by a modulation input, while taking into account component parameter errors due environmental and ageing as well as manufacturing tolerances. Control of the resonance while the excitation frequency changes permits the transmission of frequency modulation (FM) or frequency shift keying (FSK) information through an inductively coupled power transfer system.

公开(公告)号：US20170359052A1

公开(公告)日：2017-12-14

申请号：US15180442

申请日：2016-06-13

申请人： The Hong Kong University of Science and Technology

发明人： Howard Cam Luong ,  Zhiqiang Huang

IPC分类号： H03J3/18 ,  H03K3/36 ,  H03H7/00

CPC分类号： H03J3/185 ,  H03H7/004 ,  H03H7/24 ,  H03K3/36 ,  H03L7/0991 ,  H03L2207/50

摘要： An exponentially-scaling switched impedance circuit includes: two or more impedance scaling circuits, wherein each impedance scaling circuit comprises: an input port; an output port; and a switched impedance circuit connected in parallel to the output port. Each impedance scaling circuit is configured to provide an effective impedance at the input port corresponding to a scaled-down version of the exponentially-scaling switched impedance circuit. The two or more impedance scaling circuits are connected in a cascade such that an input of an impedance scaling circuit is connected to an output of a previous impedance scaling circuit and/or an output of the impedance scaling circuit is connected to an input of a next impedance scaling circuit.

公开(公告)号：US09843907B2

公开(公告)日：2017-12-12

申请号：US14158708

申请日：2014-01-17

申请人： Varia Holdings LLC

发明人： G. Eric Engstrom ,  Peter Zatloukal ,  Tyrol Graham

IPC分类号： G06F15/177 ,  H04W4/12 ,  G06Q30/02 ,  G07C13/00 ,  H03J1/00 ,  H04H60/09 ,  H04H60/80 ,  H04L12/66 ,  H04M1/725 ,  H04N21/258 ,  H04N21/422 ,  H04N21/433 ,  H04N21/458 ,  H04N21/462 ,  H04N21/6543 ,  H04W88/02 ,  H04L29/08 ,  H04H20/93 ,  H04H60/91 ,  H04W4/00 ,  H04W4/02 ,  H04W4/06 ,  H04W8/20 ,  H04W64/00 ,  H04W76/02 ,  H04W80/00 ,  H04W84/04

CPC分类号： H04W4/12 ,  G06Q30/02 ,  G07C13/00 ,  H03J1/0058 ,  H03J2200/20 ,  H04H20/93 ,  H04H60/09 ,  H04H60/80 ,  H04H60/91 ,  H04L12/66 ,  H04L67/04 ,  H04L67/26 ,  H04L67/34 ,  H04L69/329 ,  H04M1/72522 ,  H04M1/72533 ,  H04M1/72544 ,  H04M1/72547 ,  H04M1/72558 ,  H04M1/72561 ,  H04M1/72572 ,  H04N21/25866 ,  H04N21/42201 ,  H04N21/4331 ,  H04N21/458 ,  H04N21/4622 ,  H04N21/6543 ,  H04W4/00 ,  H04W4/02 ,  H04W4/06 ,  H04W8/20 ,  H04W64/00 ,  H04W76/02 ,  H04W76/10 ,  H04W80/00 ,  H04W84/04 ,  H04W88/02

摘要： The invention sends a hot link to a device. The device may be on a wireless network, a wired network, or directly coupled to the device sending the hot link. The hot link contains an associated action that is performed by the device receiving the hot link. The associated action may be performed when a user interface is activated or automatically when the hot link is received by the device. The action can be a broadcast action, Internet action, call action, download action, or upload action. The broadcast action instructs the device to tune to a particular broadcast in response to the selection of the user interface. The internet action instructs the device to access an Internet site in response to the selection of the user interface. The call action instructs the device to call a telephone number in response to the selection of use interface.

公开(公告)号：US09838053B2

公开(公告)日：2017-12-05

申请号：US15286073

申请日：2016-10-05

申请人： Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America

发明人： Donald Thomas ,  Jason Hingerton ,  Tatsuya Fujisawa ,  Jammie Chu ,  Shree Jaisimha ,  Robert Baillargeon

IPC分类号： H04B1/18 ,  H03J1/00 ,  H04B1/10 ,  H04B1/08 ,  H04H20/26 ,  H04L25/08 ,  H04W52/02 ,  H04B17/345

CPC分类号： H04B1/1027 ,  H03J1/0008 ,  H04B1/082 ,  H04B1/1036 ,  H04B17/345 ,  H04B2001/1072 ,  H04H20/26 ,  H04H2201/13 ,  H04H2201/60 ,  H04L25/08 ,  H04W52/0209 ,  Y02D70/00 ,  Y02D70/40

摘要： A method of performing alternate frequency switching in a radio includes tuning the radio to a primary frequency. A candidate alternate frequency is identified. It is determined whether the candidate alternate frequency is a third order inter-modulation artifact. Tuning is switched from the primary frequency to the candidate alternate frequency only if it is determined in the determining step that the candidate alternate frequency is not a third order inter-modulation artifact.

公开(公告)号：US20170330732A1

公开(公告)日：2017-11-16

申请号：US15665091

申请日：2017-07-31

申请人： Lam Research Corporation

发明人： John C. Valcore, JR. ,  Bradford J. Lyndaker

IPC分类号： H01J37/32 ,  H03J7/00 ,  H01J37/244 ,  H05H1/46

CPC分类号： H01J37/32183 ,  H01J37/244 ,  H01J37/32082 ,  H01J37/32137 ,  H01J37/32146 ,  H01J37/32155 ,  H01J37/32174 ,  H03J7/00 ,  H05H1/46 ,  H05H2001/4682

摘要： Systems and methods for adjusting power and frequency based on three or more states are described. One of the methods includes receiving a pulsed signal having multiple states. The pulsed signal is received by multiple radio frequency (RF) generators. When the pulsed signal having a first state is received, an RF signal having a pre-set power level is generated by a first RF generator and an RF signal having a pre-set power level is generated by a second RF generator. Moreover, when the pulsed signal having a second state is received, RF signals having pre-set power levels are generated by the first and second RF generators. Furthermore, when the pulsed signal having a third state is received, RF signals having pre-set power levels are generated by the first and second RF generators.

公开(公告)号：US09785807B2

公开(公告)日：2017-10-10

申请号：US14256877

申请日：2014-04-18

申请人： Shahriar Rokhsaz ,  Brian David Young

发明人： Shahriar Rokhsaz ,  Brian David Young

IPC分类号： G06K7/10 ,  G06K19/07 ,  H03J3/20 ,  H04B5/00

CPC分类号： G06K7/10366 ,  G06K7/10316 ,  G06K7/10346 ,  G06K19/0716 ,  G06K19/0723 ,  H03J3/20 ,  H03J2200/10 ,  H04B5/0037

摘要： A method and apparatus for detecting RF field strength. A field strength reference generator develops a field strength reference current as a function of a field strength of a received RF signal; and a field strength quantizer develops a digital field-strength value indicative of the field strength reference current. In one embodiment, detected field strength is used to dynamically vary the impedance of a tank circuit whereby, over time, induced current is maximized. In another embodiment, the quantized field strength is used to sense changes to the environment to which the RFID tag is exposed. In yet another embodiment, dynamic variations of the quantized impedance of the tank circuit are used to sense changes in the environment. Several alternate antennas are specially adapted to facilitate sensing of environmental conditions using the RFID tag.