公开(公告)号：US20220091216A1

公开(公告)日：2022-03-24

申请号：US17537882

申请日：2021-11-30

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Anand DABAK ,  Marius MOE ,  Charles SESTOK

IPC分类号： G01S3/16 ,  G01S3/48 ,  H04W64/00 ,  H04L27/26 ,  G01S3/58

摘要： Using a phase interferometry method which utilizes both amplitude and phase allows the determination and estimation of multipath signals. To determine the location of an object, a signal that contains sufficient information to allow determination of both amplitude and phase, like a packet that includes a sinewave portion, is provided from a master device. A slave device measures the phase and amplitude of the received packet and returns this information to the master device. The slave device returns a packet to the master that contains a similar sinewave portion to allow the master device to determine the phase and amplitude of the received signals. Based on the two sets of amplitude and phase of the RF signals, the master device utilizes a fast Fourier transform or techniques like multiple signal classification to determine the indicated distance for each path and thus more accurately determines a location of the slave device.

公开(公告)号：US20210190895A1

公开(公告)日：2021-06-24

申请号：US17194885

申请日：2021-03-08

申请人： AVX Antenna, Inc. d/b/a Ethertronics, Inc.

发明人： Olivier Pajona ,  Michael Roe ,  Mohd Faizal Mohd Zaini ,  Sebastian Rowson ,  Laurent Desclos

IPC分类号： G01S3/28 ,  H01Q25/04 ,  H01Q1/24 ,  G01S3/06 ,  G01S3/16

摘要： A method for obtaining the direction of a signal incoming to a communication device is provided using a modal antenna that has multiple modes corresponding to multiple radiation patterns with a single feed.

公开(公告)号：US20200209337A1

公开(公告)日：2020-07-02

申请号：US16232783

申请日：2018-12-26

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Anand DABAK ,  Marius MOE ,  Charles SESTOK

IPC分类号： G01S3/16 ,  G01S3/48 ,  G01S3/58 ,  H04L27/26 ,  H04W64/00

摘要： Using a phase interferometry method which utilizes both amplitude and phase allows the determination and estimation of multipath signals. To determine the location of an object, a signal that contains sufficient information to allow determination of both amplitude and phase, like a packet that includes a sinewave portion, is provided from a master device. A slave device measures the phase and amplitude of the received packet and returns this information to the master device. The slave device returns a packet to the master that contains a similar sinewave portion to allow the master device to determine the phase and amplitude of the received signals. Based on the two sets of amplitude and phase of the RF signals, the master device utilizes a fast Fourier transform or techniques like multiple signal classification to determine the indicated distance for each path and thus more accurately determines a location of the slave device.

公开(公告)号：US10157542B2

公开(公告)日：2018-12-18

申请号：US15556526

申请日：2016-03-10

申请人： DENSO CORPORATION

发明人： Kenichiro Sanji ,  Noritaka Hirao ,  Suguru Matsushita

IPC分类号： B60R16/02 ,  G08G1/127 ,  B60R25/24 ,  H04B17/318 ,  G01S3/16 ,  G06Q50/30 ,  G08G1/005 ,  G07C5/00 ,  G07C9/00 ,  H04W4/02 ,  G06F21/35

摘要： A user identification system is provided. In the user identification system, an in-vehicle apparatus specifies a position of a vehicular portable device with reference to a vehicle and determines whether the vehicular portable device exists in a predetermined identification area. Based on determining that the vehicular portable device exists in the identification area, the in-vehicle apparatus transmits an instruction signal instructing the vehicular portable device to specify a driver terminal. Based on reception signal strength detected during a time period determined by a time point of receipt of the instruction signal, the vehicular portable device determines the driver terminal.

公开(公告)号：US09759806B2

公开(公告)日：2017-09-12

申请号：US14421124

申请日：2014-06-06

申请人： Panasonic Corporation

发明人： Takaaki Kishigami

IPC分类号： G01S3/74 ,  G01S7/03 ,  G01S7/02 ,  G01S13/42 ,  G01S13/32 ,  G01S13/02 ,  G01S13/26 ,  G01S3/16 ,  G01S3/28 ,  G01S3/14

CPC分类号： G01S7/03 ,  G01S3/143 ,  G01S3/16 ,  G01S3/28 ,  G01S3/74 ,  G01S7/02 ,  G01S13/02 ,  G01S13/26 ,  G01S13/325 ,  G01S13/42

摘要： A radar receiver (Rx) receives a reflected wave signal corresponding to a radar transmitting signal having been reflected on a target by using a plurality of antenna system processors (D1 to D4), and estimates an arrival direction of the reflected wave signal. A peak frequency selector (21) selects a peak value of a correlation vector. An adjacent time-frequency component extractor (22) extracts correlation vectors in number of (NE×NT−1) corresponding to NE Doppler frequencies and NT times respectively adjacent to a Doppler frequency and a time giving a peak value. A correlation matrix generating adder (23) generates a correlation matrix corresponding to correlation of the reflected wave signal received by a plurality of receiver antennas on the basis of the (NE×NT) extracted correlation vectors.

公开(公告)号：US09742613B2

公开(公告)日：2017-08-22

申请号：US14937500

申请日：2015-11-10

申请人： Maxlinear, Inc.

发明人： Yongtao Wang ,  Curtis Ling ,  Timothy Gallagher

IPC分类号： H03D3/22 ,  G01S3/16 ,  H04L27/38 ,  H04L27/36 ,  H04L27/233

CPC分类号： H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/361 ,  H04L27/366

摘要： Methods and systems for I/O mismatch calibration and compensation for wideband communication receivers may include receiving a radio frequency (RF) signal in a receiver of a communication device, down-sampling said received RF signal to generate a channel k and its image channel −k at baseband frequencies, determining average in-phase (I) and quadrature (Q) gain and phase mismatch of said channel k and said image channel −k, removing said average I and Q gain and phase mismatch of said channel k and said image channel −k, determining, after said removing said average I and Q gain and phase mismatch, a residual phase tilt of said channel k and said image channel −k, and compensating for said determined residual phase tilt of said channel k and said image channel −k utilizing a phase tilt correction filter.

公开(公告)号：US09477865B2

公开(公告)日：2016-10-25

申请号：US14106368

申请日：2013-12-13

申请人： SYMBOL TECHNOLOGIES, INC.

发明人： Michael J Koch ,  Benjamin J Bekritsky ,  Alexander M Jacques ,  Charles B Swope

IPC分类号： G06K7/10 ,  G01S13/75 ,  G01S13/82 ,  G01S3/46 ,  G01S3/16

CPC分类号： G06K7/10415 ,  G01S3/16 ,  G01S3/46 ,  G01S13/75 ,  G01S13/751 ,  G01S13/825 ,  G06K7/10099 ,  G06K7/10128 ,  G06K7/10366

摘要： A radio frequency (RF) identification (RFID) tag reading system and method accurately determine true bearings of RFID tags associated with items in a controlled area. An RFID reader has an array of antenna elements and a plurality of RF transceivers. A controller controls the transceivers by steering a primary transmit beam over the controlled area by transmitting a primary transmit signal to each tag, and steering a primary receive beam at a primary steering angle by receiving a primary receive signal from each tag. The controller thereupon steers a plurality of secondary receive offset beams at different secondary steering angles that are offset from the primary steering angle by receiving secondary receive offset signals from each tag, and by processing the offset signals to determine a true bearing for each tag.

摘要翻译： 射频识别（RFID）标签读取系统和方法准确地确定与受控区域中的项目相关联的RFID标签的真实轴承。 RFID读取器具有天线元件阵列和多个RF收发器。 控制器通过将主要发射信号发送到每个标签，并通过从主要转向角度接收来自每个标签的主要接收信号来控制主要接收波束来控制受控区域上的主要发射波束来控制收发器。 控制器随后通过接收来自每个标签的次级接收偏移信号，并且通过处理偏移信号来确定每个标签的真实方位，引导不同次级转向角处的多个副接收偏移波束偏离主转向角。

公开(公告)号：US09232489B2

公开(公告)日：2016-01-05

申请号：US13935872

申请日：2013-07-05

申请人： Dipak Roy ,  Angsuman Rudra

发明人： Dipak Roy ,  Angsuman Rudra

IPC分类号： H04L7/00 ,  G01S3/16 ,  H04Q7/20 ,  H04W56/00

CPC分类号： H04W56/002 ,  H04W56/00

摘要： A receiver system using commercially available super high-speed data converters that are able to directly digitize at multiple GHz sampling rates with sufficient accuracy to fit many radio applications. Unlike conventional receivers, no down converters or mixing stages are required. Instead it uses a bank of RF filters from which the desired RF filter, based on the frequency band of interest, is switched in. The frequency spectrum scan rate is very fast as the settling time for the simple RF front-end is small and the speed of RF switching is high. The filtered output is digitized at a multiple GHz sampling rate and all signal processing is done by FPGA or a combination of FPGA and/or a general-purpose processor.

摘要翻译： 一种使用市售的超高速数据转换器的接收机系统，其能够以足够的精度以多GHz采样率直接数字化以适应许多无线电应用。 与传统接收机不同，不需要下变频器或混合级。 相反，它使用一组RF滤波器，根据感兴趣的频带，所需的RF滤波器被切换。频谱扫描速率非常快，因为简单RF前端的建立时间很短， 射频切换速度高。 滤波输出以多GHz采样率进行数字化处理，所有信号处理由FPGA或FPGA和/或通用处理器的组合完成。

公开(公告)号：US09052379B2

公开(公告)日：2015-06-09

申请号：US13511628

申请日：2010-11-24

申请人： Daniel Jahan ,  Cedric Cornu

发明人： Daniel Jahan ,  Cedric Cornu

IPC分类号： G01S3/16 ,  G01S3/28 ,  G01S3/04 ,  G01S3/50

CPC分类号： G01S3/043 ,  G01S3/50

摘要： A reception system including a receiver coupled to a processing means, the receiver comprising a number N of antennas, each being able to pick up signals representative of incident waves and to deliver a pulse dependent on said signal, N being an integer. Said receiver includes: N delay lines respectively coupled to each of said N antennas, each delay line being able to delay the signal delivered by the antenna with which it is associated by its own time delay, a coupling means able to sum the N signals delivered by the N delay lines, so as to deliver an output signal comprising a series of N time-shifted pulses. The processing means includes a measurement means able to measure the signal delivered by the coupling means and to deliver as output a signal formed by measurement samples, representative of the N pulses delivered by the N antennas.

摘要翻译： 一种包括耦合到处理装置的接收机的接收系统，所述接收机包括N个天线，每个天线能够拾取代表入射波的信号，并且传送取决于所述信号的脉冲，N是整数。 所述接收机包括：分别耦合到所述N个天线中的每一个的N个延迟线，每个延迟线能够延迟由其自身的时间延迟与其相关联的天线所传递的信号;能够将传递的N个信号 通过N个延迟线，以便传送包括一系列N个时移脉冲的输出信号。 处理装置包括能够测量由耦合装置传送的信号的测量装置，并且输出表示由N个天线传送的N个脉冲的测量样本形成的信号作为输出。

公开(公告)号：US08934855B2

公开(公告)日：2015-01-13

申请号：US12269236

申请日：2008-11-12

申请人： Simon John Gale ,  Steven Raymond Hall ,  Andrew James Urquhart

发明人： Simon John Gale ,  Steven Raymond Hall ,  Andrew James Urquhart

IPC分类号： H04B17/00 ,  H04W24/00 ,  H04M1/00 ,  G01S3/16 ,  H04W24/06 ,  H01Q1/12 ,  H01Q3/26 ,  H04W28/04 ,  H04W88/08 ,  H04W36/08 ,  H04W16/02

CPC分类号： H04W24/06 ,  H01Q1/1257 ,  H01Q3/267 ,  H04B17/318 ,  H04W16/02 ,  H04W24/00 ,  H04W28/04 ,  H04W36/08 ,  H04W88/08

摘要： A base station for use in a mobile telephony network includes an antenna arrangement coupled to a transceiver arrangement for producing a plurality of beams. A method of testing the base station comprises detecting at the transceiver arrangement the signal strengths of a test signal received via the beams; comparing and/or correlating the said signal strengths detected at the transceiver arrangement; and using the results of the comparisons and/or correlations to determine the configuration of the antenna arrangement and transceiver arrangement and/or to detect faults. The comparison of average signal strengths can be used to detect cabling faults, and beam errors. The correlation of un-averaged signal strengths can be used to determine which beams have the same polarization. Beam pointing directions and the allocation of antennas to sectors can be determined by monitoring handovers of mobiles moving between cells. Frequencies may be allocated to sectors according to a frequency re-use scheme.

摘要翻译： 用于移动电话网络的基站包括耦合到用于产生多个波束的收发器装置的天线装置。 一种测试基站的方法包括：在收发机装置处检测通过波束接收的测试信号的信号强度; 比较和/或关联在收发机设备处检测到的所述信号强度; 并且使用比较和/或相关的结果来确定天线布置和收发机布置的配置和/或检测故障。 平均信号强度的比较可用于检测布线故障和波束误差。 可以使用非平均信号强度的相关性来确定哪些光束具有相同的偏振。 光束指向方向和天线到扇区的分配可以通过监视在小区之间移动的移动台的切换来确定。 频率可以根据频率重用方案分配给扇区。