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1. 发明授权

US12149296B2 Method and apparatus for estimating electromagnetic environmental effects on RF dependent systems 有权
公开(公告)号：US12149296B2
公开(公告)日：2024-11-19
申请号：US17703842
申请日：2022-03-24
申请人： KELLOGG BROWN & ROOT LLC
发明人： Theodore Leonard Harwood, II , Jerick Craig Black
IPC分类号： H04B17/29 , H04B17/21 , H04B17/27
CPC分类号： H04B17/29 , H04B17/21 , H04B17/27
摘要： The described systems and related test methods provide significant improvement in test accuracy, as well as reduction of test time for Electromagnetic Environmental Effects (E3) system level testing. Systems may include a real time spectrum analyzer, a network analyzer, and a switching/filtering/coupling network controlled by an information processing device, such as a general purpose computer. These systems can scan all frequencies at each receiver.

2. 发明授权

US12143160B2 System and method for alignment measurement of an array antenna system 有权
公开(公告)号：US12143160B2
公开(公告)日：2024-11-12
申请号：US17416256
申请日：2018-12-18
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Torbjörn Elfström , Lars Persson , Christer Engdahl
IPC分类号： H04B17/12 , G01S5/02 , H01Q3/26 , H04B17/21
CPC分类号： H04B17/12 , G01S5/0221 , G01S5/0226 , H01Q3/267 , H04B17/21
摘要： The present disclosure relates to a system (1) for measurement of antenna alignment of an array antenna system (2) used for wireless communication. The array antenna system (2) has an antenna position (A) relative a first coordinate system (18) and comprises a control unit (3) and an array antenna (4) having an antenna aperture plane (19), a certain coverage (5) and an initial array antenna orientation (B). The array antenna (4) further comprises a plurality of antenna elements (6) and at least two antenna ports (7, 8, 9, 10), each antenna port (7, 8, 9, 10) being connected to a corresponding subarray (11, 12, 13, 14), each subarray (11, 12, 13, 14) comprising at least one antenna element (6). The system (1) comprises the array antenna system (2) and an unmanned aerial vehicle (15). UAV, arranged to be deployed in the coverage (5) and comprising a UAV antenna arrangement (16) and a positioning module (17) that is adapted to provide UAV position information (C) relative the first coordinate system (18). In at least one UAV position (C), the UAV (15) is adapted to transmit a UAV signal to the array antenna (4) by means of the UAV antenna arrangement (16), the UAV signal comprising the UAV position information (C). The control unit (3) is adapted to detect signals corresponding to the received UAV signal at the antenna ports (7, 8, 9, 10), and to determine a determined array antenna orientation (D) by means of determined phase differences between the detected signals, the antenna position (A), the initial array antenna orientation (B) and the UAV position information (C).

3. 发明授权

US12119892B2 Determining initial transmission phase offset in an NFC device 有权
公开(公告)号：US12119892B2
公开(公告)日：2024-10-15
申请号：US17752371
申请日：2022-05-24
申请人： NXP B.V.
发明人： Markus Wobak
IPC分类号： H04B5/73 , H04B1/06 , H04B5/70 , H04B5/72 , H04B17/12 , H04B17/21 , H04B17/29
CPC分类号： H04B5/73 , H04B1/06 , H04B5/70 , H04B5/72 , H04B17/12 , H04B17/21 , H04B17/29
摘要： There is described a method of determining an initial transmission phase offset in an NFC device configured to operate in NFC card mode only, wherein the NFC device comprises an NFC chip and a matching circuit. The method comprises: determining an initial RF matching resonance frequency of the NFC device utilizing an internal oscillator of the NFC chip; reading correction data from a non-volatile memory of the NFC chip, the correction data being indicative of a frequency offset of the internal oscillator relative to a nominal oscillator frequency; determining a corrected RF matching resonance frequency of the NFC device based on the initial RF matching resonance frequency and the correction data; and determining the initial transmission phase offset based on the corrected RF matching resonance frequency. Furthermore, a device and a method of manufacturing an NFC device are described.

4. 发明公开

US20240305388A1 CALIBRATION METHOD AND CALIBRATION SYSTEM FOR RADIO FREQUENCY TRANSCEIVER 审中-公开
公开(公告)号：US20240305388A1
公开(公告)日：2024-09-12
申请号：US18596788
申请日：2024-03-06
申请人： Wistron NeWeb Corporation
发明人： Chen-Shu PENG , Chih Yao CHANG
IPC分类号： H04B17/11 , H04B17/00 , H04B17/21
CPC分类号： H04B17/11 , H04B17/0087 , H04B17/21
摘要： A calibration method for a radio frequency (RF) transceiver and a calibration system thereof are provided. The calibration method includes configuring a controller to perform a first transmission test on the RF transceiver and generate a plurality of model test results for selecting a target calibration model from a plurality of reference calibration models to calibrate the RF transceiver; configuring the controller to perform a second transmission test on the RF transceiver and generate a plurality of parameter test results for selecting a target parameter set from a plurality of reference parameters to calibrate the RF transceiver; and configuring the controller to perform a third transmission test on the RF transceiver and generate a plurality of circuit test results for selecting a target simulation circuit from a plurality of reference simulation circuits to match the target simulation circuit to the RF transceiver.

5. 发明授权

US12063077B2 Learning device 有权
公开(公告)号：US12063077B2
公开(公告)日：2024-08-13
申请号：US17423340
申请日：2019-01-15
申请人： LG ELECTRONICS INC.
发明人： Sungbo Jung , Hagryang Kim
IPC分类号： H04W4/00 , H04B17/19 , H04B17/21 , H04B17/318 , H04W24/06 , G06N3/0455
CPC分类号： H04B17/19 , H04B17/21 , H04B17/318 , H04W24/06 , G06N3/0455
摘要： According to an embodiment of the present disclosure, a learning device may include a communication unit, database configured to store wireless environment data sets representing wireless environments between an image transmission device and an image reception device, and a processor configured to generate a plurality of wireless environment space types respectively mapped to the wireless environment data sets, generate a beamforming learning model by learning a correlation between antenna configuration factors and communication quality factors for each of the wireless environment space types, determine a wireless environment space type corresponding to the new wireless environment data set from among the plurality of wireless environment space types when a new wireless environment data set is received, and determine values of the antenna configuration factors using a beamforming learning model corresponding to the determined wireless environment space type.

6. 发明授权

US11973629B2 Non-disruptive phased array calibration for FDD and TDD communication systems 有权
公开(公告)号：US11973629B2
公开(公告)日：2024-04-30
申请号：US17959711
申请日：2022-10-04
申请人： NEC Advanced Networks, Inc.
发明人： Gregg S. Nardozza , Giovanni Marzin , Yiping Feng , Robert C. Frye , Mihai Banu
IPC分类号： H04L27/26 , H04B17/21
CPC分类号： H04L27/2666 , H04B17/21 , H04L27/2646
摘要： A method of calibrating a transmitter chain in a phased array system in which a lower guard band is assigned to a lower side of an operating carrier of a communication channel and an upper guard band is assigned an upper side of the operating carrier includes injecting a first calibration tone into the transmitter chain and detecting its arrival at the end of the transmitter chain, at which point a first detected calibration signal is generated. The first detected calibration signal and the injected first calibration tone are then compared to produce a first comparison signal. The transmitter chain's phase and/or gain is then adjusted based on this first comparison signal. The first calibration tone located within one of the lower and upper guard bands of the communication channel of the transmitter chain.

7. 发明授权

US11949443B2 Adaptive eyewear antenna 有权
公开(公告)号：US11949443B2
公开(公告)日：2024-04-02
申请号：US17969478
申请日：2022-10-19
申请人： Snap Inc.
发明人： Ugur Olgun
IPC分类号： H04B1/3827 , H01Q1/27 , H01Q1/40 , H01Q7/00 , H01Q9/30 , H04B17/21
CPC分类号： H04B1/385 , H01Q1/273 , H01Q1/40 , H01Q7/00 , H01Q9/30 , H04B17/21 , H04B2001/3866
摘要： An eyewear device that includes a lens; a support structure adapted to be worn on the head of a user, the support structure including a rim configured to support the lens in a viewing area visible to the user when wearing the support structure; an antenna embedded into or forming part of the support structure, the antenna at least partially extending into the rim; a transceiver adapter to send and receive signals; and a tuner coupled between the transceiver and the antenna, the tuner adapted to match impedance between the antenna and the transceiver to improve power transfer.

8. 发明授权

US11924656B2 Automatic RF transmit power control for over the air testing 有权
公开(公告)号：US11924656B2
公开(公告)日：2024-03-05
申请号：US17379317
申请日：2021-07-19
申请人： Fitbit LLC
发明人： Sidd Rajput
IPC分类号： H04W24/06 , G06F1/16 , H04B17/21 , H04W52/52
CPC分类号： H04W24/06 , G06F1/163 , H04B17/21 , H04W52/52
摘要： A computer-implemented method for setting RF transmit power of a wireless device includes obtaining power response data for a power detector of the wireless device, the power response data providing a relationship between power detector readings from the power detector and measured transmit power of a transmitter of the wireless device; identifying a target power detector reading value corresponding to a target transmit power based at least in part on the power response data; initializing a transmitter gain of the transmitter to an initial transmitter gain value; obtaining a power detector reading value from the power detector; determining that a difference between the power detector reading value and the target power detector reading value is greater than a tolerance margin; and adjusting a transmitter gain value of the transmitter in a direction of the difference between the power detector reading value and the target power detector reading value.

9. 发明授权

US11901961B2 Interface circuit, memory controller and method for calibrating signal processing devices in an interface circuit of a memory controller 有权
公开(公告)号：US11901961B2
公开(公告)日：2024-02-13
申请号：US17951090
申请日：2022-09-22
申请人： Silicon Motion, Inc.
发明人： Fu-Jen Shih
IPC分类号： H04B17/11 , H04J3/04 , H04B17/21
CPC分类号： H04B17/11 , H04B17/21 , H04J3/04
摘要： A method, for calibrating signal processing devices in an interface circuit coupled to a host device, comprises: negotiating with the host device in a link up process about an operation mode for the interface circuit to operate in a calibration procedure; and calibrating a characteristic value of a first signal processing device and a characteristic value of a second signal processing device in the calibration procedure. The first signal processing device is disposed on a receiving signal processing path and configured to process a received signal and the second signal processing device is disposed on a transmitting signal processing path and configured to process a transmitting signal, and the interface circuit is configured to operate based on the operation mode in the calibration procedure.

10. 发明授权

US11874388B2 Device-free subject localization methods and systems using wireless signals 有权
公开(公告)号：US11874388B2
公开(公告)日：2024-01-16
申请号：US17504847
申请日：2021-10-19
申请人： AERIAL TECHNOLOGIES INC.
发明人： Yi Gao , Michel Allegue Martinez , Xi Chen , Xue Liu
IPC分类号： G01S5/02 , H04B17/21 , H04B17/27 , H04W64/00
CPC分类号： G01S5/021 , G01S5/0221 , H04B17/21 , H04B17/27 , H04W64/00
摘要： Within several applications the ability to localize an individual within an environment is beneficial. However, existing indoor localization approaches depend upon at least one of two assumptions. First, the subject(s) localization is achieved by localizing a wireless device carried by the subject and second, wireless fingerprints are established for the localization via a site survey being performed before a system can actually localize the subject(s). However, in many application scenarios, neither of the above two assumptions are true, namely that the user is not carrying an active wireless device or that the site has been surveyed. Accordingly, embodiments of the invention provide for subject localization by a dynamic calibration of wireless signals between a receiver and a transmitter, where neither the receiver or transmitter are associated with an electronic device carried or worn by the subject.

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