公开(公告)号：US11835570B2

公开(公告)日：2023-12-05

申请号：US18052620

申请日：2022-11-04

Applicant: LineVision, Inc.

Inventor： Nathan Douglas Pinney ,  Thomas Anderson McChesney ,  Elliott J. Gould

IPC: G01R31/08 ,  G01B11/02 ,  G01B11/06 ,  G01R29/08 ,  G01R21/01 ,  G01P5/02 ,  G01S17/50 ,  G01W1/00

CPC classification number: G01R31/085 ,  G01B11/026 ,  G01B11/0616 ,  G01P5/02 ,  G01S17/50 ,  G01W1/00 ,  G01R21/01 ,  G01R29/085

Abstract: A transmission line monitoring system and central processing facility are used to determine the geometry, such as a height, of one or more conductors of a power transmission line and real-time monitoring of other properties of the conductors.

公开(公告)号：US20180217185A1

公开(公告)日：2018-08-02

申请号：US15419986

申请日：2017-01-30

Applicant: Lam Research Corporation

Inventor： Andras Kuthi ,  Shen Peng ,  Jimmy Nguyen

IPC: G01R15/18 ,  H05K1/02 ,  H05K1/18 ,  H01F27/28 ,  H01J37/32

CPC classification number: H01J37/32917 ,  G01R15/181 ,  G01R21/01 ,  H01F27/2804 ,  H01J37/32091 ,  H01J37/3211 ,  H01J37/32183 ,  H05K1/0243 ,  H05K1/181 ,  H05K2201/10022 ,  H05K2201/10151

Abstract: A first inductive loop is formed within a printed circuit board (PCB). The PCB is mounted in a fixed spatial relationship with a radiofrequency power supply structure. A second inductive loop is formed within the PCB. The second inductive loop is positioned in fixed spatial relationship with the first inductive loop such that a distance between the centerpoints of the first and second inductive loops has a fixed value and is precisely known. Each of the first and second inductive loops is formed in an essentially identical manner with regard to number of complete turns of the loops and a size of the loops. A first voltage signal present on the first inductive loop and a second voltage signal present on the second inductive loop and the distance between the first and second loops provide for determination of a radiofrequency current present on the radiofrequency power supply structure.

公开(公告)号：US09851381B2

公开(公告)日：2017-12-26

申请号：US14090904

申请日：2013-11-26

Applicant: Bird Technologies Group Inc.

Inventor： Timothy Lee Holt

IPC: G01R35/00 ,  G01R21/133 ,  G01R21/01 ,  G01R21/12 ,  G01R21/00 ,  H04B17/10

CPC classification number: G01R21/133 ,  G01R21/00 ,  G01R21/01 ,  G01R21/12 ,  G01R35/005 ,  H04B17/10

Abstract: The invention provides an in-line power monitor for an RF transmission line that is capable of being calibrated in-line during live conditions at the exact power level and frequency where it is used. This device uses forward and reflected directional couplers and a non-directional coupler to sample the RF voltage on the transmission line. The RF voltage of the forward and reflected channels are each split into two paths, one going to a test port and the other leading to additional circuitry which prepares the signals of the forward and reflected channels for output to power displays. Additionally, the monitor allows the user to compensate for any voltage offsets introduced by various circuitry components. Further, the monitor also allows to user to individually calibrate the output of the forward and reflected channels by applying an adjustable gain ratio correction to each channel.

公开(公告)号：US09817041B2

公开(公告)日：2017-11-14

申请号：US15027272

申请日：2013-10-18

Applicant: Yi Yin

Inventor： Yi Yin

IPC: G01R19/04 ,  G01R21/01

CPC classification number: G01R19/04 ,  G01R21/01 ,  G01R29/0892

Abstract: A peak detector circuit comprises a first output coupled to ground by a first load and to emitter terminals of first and second switching devices. A second output is coupled to ground by a second load and to emitter terminals of third and fourth switching devices. A third output is coupled to a supply voltage node by a third load and to collector terminals of the first and second switching devices. A fourth output is coupled to the supply voltage node by a fourth load and to collector terminals of the third and fourth switching devices. The first, second, third, and fourth switching devices have control terminals which are biased with a common bias voltage. The first, second, third and fourth load are selected so that R1=R2=αf*R3=αf*R4, with R1, R2, R3, R4 being a resistance of the first, second, third and fourth loads, respectively, and αf a common-base current gain of the switching devices.

公开(公告)号：US20150054453A1

公开(公告)日：2015-02-26

申请号：US14335655

申请日：2014-07-18

Applicant: QUALCOMM Incorporated

Inventor： Mark D. WHITE, II ,  Edward Kenneth Kallal ,  Ryan Tseng ,  Joseph N. Maalouf

IPC: G01R29/08 ,  H02J7/02

CPC classification number: H02J50/12 ,  G01R21/01 ,  G01R29/0814 ,  G01V3/12 ,  H02J5/005 ,  H02J7/0052 ,  H02J7/007 ,  H02J7/025 ,  H02J50/40 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0075

Abstract: An apparatus and method for lost power detection are described. In one implementation, an apparatus for wireless transferring power comprises a wireless power transmitter configured to wirelessly transmit power at a power level sufficient to power or charge a chargeable device. The apparatus further comprises a controller configured to determine a first and second power difference between a first and second power measurement and the second and a third power measurement of the power level provided by the wireless power transmitter at a first, second, and third sample time, respectively. The controller is further configured to determine a transmitter power difference between the first power difference and the second power difference. The controller is further configured to determine an absence or a presence of an object that affects consumption of power transmitted by the wireless power transmitter based at least on the transmitter power difference Δ_T.

Abstract translation: 描述了用于丢失功率检测的装置和方法。 在一个实施方式中，一种用于无线传送电力的设备包括：无线电力发射机，被配置为以足以对可计费设备供电或充电的功率电平无线发射功率。 该装置还包括一个控制器，被配置为在第一，第二和第三采样时间确定第一和第二功率测量之间的第一和第二功率差以及由无线功率发射器提供的功率电平的第二和第三功率测量 ， 分别。 控制器还被配置为确定第一功率差和第二功率差之间的发射机功率差。 所述控制器还被配置为至少基于所述发射机功率差D D T _T来确定影响由所述无线功率发射机发射的功率的消耗的对象的不存在或不存在。

公开(公告)号：US20150054352A1

公开(公告)日：2015-02-26

申请号：US14464550

申请日：2014-08-20

Applicant: QUALCOMM Incorporated

Inventor： Edward Kenneth KALLAL ,  Mark WHITE, II ,  Ryan TSENG

IPC: H02J5/00

CPC classification number: H02J50/12 ,  G01R21/01 ,  G01R29/0814 ,  G01V3/12 ,  H02J5/005 ,  H02J7/0052 ,  H02J7/007 ,  H02J7/025 ,  H02J50/40 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0075

Abstract: Systems, methods and apparatus are disclosed for detecting power losses due to induction heating in wireless power receivers. In one aspect, an apparatus for wireless power transfer comprises a power transfer component configured to transmit wireless power to a wireless power receiver at a power level sufficient to charge or power a load. The apparatus further comprises a communications receiver configured to receive a message from the wireless power receiver, the message comprising a group identifier. The apparatus further comprises a controller circuit operationally coupled to the power transfer component and the communications receiver and configured to determine a power loss value based on the group identifier, the power loss value indicative of power loss due to induction heating presented by one or more wireless power receivers that are members of a group associated with the group identifier.

Abstract translation: 公开了用于检测由无线电力接收器中的感应加热引起的功率损耗的系统，方法和装置。 一方面，一种用于无线电力传输的装置包括功率传输组件，其被配置为以足以对负载充电或供电的功率电平向无线电力接收器发送无线电力。 该装置还包括被配置为从无线功率接收器接收消息的通信接收机，该消息包括组标识符。 该装置还包括操作上耦合到功率传输部件和通信接收器的控制器电路，并且被配置为基于组标识符来确定功率损耗值，功率损耗值表示由一个或多个无线电产生的感应加热引起的功率损耗 功率接收器是与组标识符相关联的组的成员。

公开(公告)号：US08912785B2

公开(公告)日：2014-12-16

申请号：US13249187

申请日：2011-09-29

Applicant: Andras Vince Horvath

Inventor： Andras Vince Horvath

IPC: G01R19/04 ,  G01R21/01

CPC classification number: G01R21/01

Abstract: Techniques are disclosed relating to radio frequency (RF) power detection. In one embodiment, a power detection circuit includes a multiplier circuit configured to multiply a first voltage signal by a second voltage signal. The multiplier circuit receives the first voltage signal at gates of a first transistor pair and receives the second voltage signal at gates of second and third transistor pairs. In some embodiments, a drain of a first transistor in the first transistor pair is coupled to sources of the second transistor pair, and drain of a second transistor in the first transistor pair is coupled to sources of the third transistor pair. In some embodiments, the power detection circuit includes a comparison circuit that compares the first pair of currents and a second pair of currents associated with a threshold voltage signal.

Abstract translation: 公开了与射频（RF）功率检测有关的技术。 在一个实施例中，功率检测电路包括被配置为将第一电压信号乘以第二电压信号的乘法器电路。 乘法器电路在第一晶体管对的栅极处接收第一电压信号，并在第二和第三晶体管对的栅极处接收第二电压信号。 在一些实施例中，第一晶体管对中的第一晶体管的漏极耦合到第二晶体管对的源极，第一晶体管对中的第二晶体管的漏极耦合到第三晶体管对的源极。 在一些实施例中，功率检测电路包括比较电路，其比较第一对电流和与阈值电压信号相关联的第二对电流。

公开(公告)号：US08461923B2

公开(公告)日：2013-06-11

申请号：US12951697

申请日：2010-11-22

Applicant: Yalcin A. Eken ,  Savas Tokmak

Inventor： Yalcin A. Eken ,  Savas Tokmak

IPC: H03G3/20

CPC classification number: H03G3/3042 ,  G01R21/01 ,  H03G1/0035

Abstract: A variable gain amplifier includes a plurality of amplification elements arranged to generate amplified representations of an RF input signal at a plurality of nodes. A plurality of controllable response elements each have an input coupled to a different one of the nodes to receive a different one of the amplified representations of the RF input signal. A scale factor generator is coupled to each of the controllable response elements. The scale factor generator receives a gain control signal and generates scale factor signals for varying the response of each of the controllable response elements such that as the scale factor generator sweeps through a full range of the gain control signal, the response of each of the controllable response elements is, in succession, increased smoothly to a peak and thereafter decreased smoothly to a lower level to produce a scaled output. A summing element is coupled to the controllable response elements for combining the scaled outputs of the controllable response elements to generate an output of the variable gain amplifier having a given gain range.

Abstract translation: 可变增益放大器包括被布置成在多个节点处产生RF输入信号的放大表示的多个放大元件。 多个可控制响应元件各自具有耦合到不同节点之间的输入以接收RF输入信号的不同的放大表示。 比例因子发生器耦合到每个可控制的响应元件。 比例因子发生器接收增益控制信号并产生比例因子信号，用于改变每个可控制响应元件的响应，使得当比例因子发生器扫过增益控制信号的全范围时，每个可控制的响应元件的响应 响应元素连续地平滑地增加到峰值，然后平滑地降低到较低的水平以产生缩放的输出。 加法元件耦合到可控响应元件，用于组合可控制响应元件的缩放输出以产生具有给定增益范围的可变增益放大器的输出。

公开(公告)号：US08400165B2

公开(公告)日：2013-03-19

申请号：US12956783

申请日：2010-11-30

Applicant: Thomas Reichel

Inventor： Thomas Reichel

IPC: G01R35/00

CPC classification number: G01R35/005 ,  G01R21/01 ,  G01R27/32

Abstract: A calibration system for calibrating power sensors includes a signal generator, a first signal splitter, a second signal splitter, a third signal splitter, a first measuring point, a second measuring point, a test port and a first power sensor. In this context, the signal generator is connected to the input of the first signal splitter. A first output of the first signal splitter is connected to the second signal splitter. A first output of the second signal splitter is connected to the test port. A second output of the second signal splitter is connected to the first measuring point. A second output of the first signal splitter is connected to the third signal splitter. A first output of the third signal splitter is connected to the first power sensor. A second output of the third signal splitter is connected to the second measuring point.

Abstract translation: 用于校准功率传感器的校准系统包括信号发生器，第一信号分离器，第二信号分离器，第三信号分离器，第一测量点，第二测量点，测试端口和第一功率传感器。 在这种情况下，信号发生器连接到第一信号分离器的输入。 第一信号分离器的第一输出端连接到第二信号分离器。 第二信号分离器的第一输出端连接到测试端口。 第二信号分离器的第二输出端连接到第一测量点。 第一信号分离器的第二输出端连接到第三信号分离器。 第三信号分离器的第一输出端连接到第一功率传感器。 第三信号分配器的第二输出端连接到第二测量点。

公开(公告)号：US08373487B1

公开(公告)日：2013-02-12

申请号：US13220480

申请日：2011-08-29

Applicant: Frederic Roger

Inventor： Frederic Roger

IPC: G06F7/64

CPC classification number: G01R19/02 ,  G01R21/01

Abstract: Systems and methods are provided for power measurement of signals such that the power measurement is insensitive to PVT variations of the measurement systems. A power measurement system includes an analog squarer circuitry, an integrating ADC, and a controller. The squarer circuitry calculates the power of a signal whose power is to be measured while the integrating ADC integrates the calculated power over a runup interval to generate an integrated power. The squarer circuitry also calculates the power of a reference for the integrating ADC to de-integrate the integrated power over a rundown interval. The power measurements are independent of PVT variations of the analog squarer circuitry and integrating ADC. The controller digitally controls the runup interval and measures the rundown interval to provide digitized power measurements. The analog squarer circuitry have replica squarer circuits. Process dependent mismatches between the replica analog circuitry may be removed through a calibration process.

Abstract translation: 提供系统和方法用于信号的功率测量，使得功率测量对测量系统的PVT变化不敏感。 功率测量系统包括模拟平方电路，积分ADC和控制器。 平方电路计算其功率要被测量的信号的功率，而积分ADC通过运行间隔积分计算出的功率以产生积分功率。 平方电路还计算积分ADC的参考功率，以在整个时间间隔内对积分功率进行去积分。 功率测量与模拟平方电路和积分ADC的PVT变化无关。 控制器以数字方式控制延时间隔，并测量故障间隔以提供数字化功率测量。 模拟平方电路具有复制平方电路。 可以通过校准过程去除复制模拟电路之间的过程相关的不匹配。