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公开(公告)号：US11461454B2
公开(公告)日：2022-10-04
申请号：US15944732
申请日：2018-04-03
申请人： Analog Devices, Inc.
发明人： Yosef Stein , Deniz Karakoyunlu , Matthew J. Coles
IPC分类号： G06F21/44 , H04L29/06 , H04L9/40 , H04L9/32 , H04L9/08 , G06K19/07 , H02J50/20 , H04W12/02 , G06F21/82 , H04W12/06 , H04W12/03
摘要： According to various aspects, systems and methods are provided for secure communication between a passive sensor node and a reader. A passive sensor node may be used for monitoring in a variety of situations. A reader may power the passive sensor while communicating with the passive sensor. In some scenarios, it may be necessary or desirable to provide security between the passive sensor and the reader. According to one aspect, the reader may send a first message initiating communication with the passive sensor, which may respond with a second message including encrypted data. An authorized reader may decrypt the data and respond with data encrypted based on the second message in a third message, which may be used by the device to authenticate the reader.
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12.发明授权公开(公告)号：US09281907B2
公开(公告)日：2016-03-08
申请号：US13897719
申请日：2013-05-20
申请人： Analog Devices, Inc.
发明人： Wei An , Richard P. Schubert , Yosef Stein
IPC分类号： H04B1/16 , H04B17/21 , H04B17/391
CPC分类号： H04B17/21 , H04B17/391
摘要： One example embodiment provides a system, apparatus, and method for using polynomial models in tone calibration for quadrature error correction in I/Q receivers. In one example embodiment, method for calibrating an I/Q receiver is provided and includes receiving a first mismatch parameter indicating a mismatch between I and Q channels of the I/Q receiver; and estimating a second mismatch parameter from the first mismatch parameter using a polynomial model.
摘要翻译： 一个示例性实施例提供了一种用于在I / Q接收机中用于正交纠错的音调校准中的多项式模型的系统，装置和方法。 在一个示例实施例中，提供了用于校准I / Q接收机的方法，并且包括接收指示I / Q接收机的I和Q信道之间的失配的第一失配参数; 以及使用多项式模型从所述第一失配参数估计第二失配参数。
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13.发明申请公开(公告)号：US20140273902A1
公开(公告)日：2014-09-18
申请号：US13897719
申请日：2013-05-20
申请人： ANALOG DEVICES, INC.
发明人： Wei An , Richard P. Schubert , Yosef Stein
IPC分类号： H04B17/00
CPC分类号： H04B17/21 , H04B17/391
摘要： One example embodiment provides a system, apparatus, and method for using polynomial models in tone calibration for quadrature error correction in I/Q receivers. In one example embodiment, method for calibrating an I/Q receiver is provided and includes receiving a first mismatch parameter indicating a mismatch between I and Q channels of the I/Q receiver; and estimating a second mismatch parameter from the first mismatch parameter using a polynomial model.
摘要翻译： 一个示例性实施例提供了一种用于在I / Q接收机中用于正交纠错的音调校准中的多项式模型的系统，装置和方法。 在一个示例实施例中，提供了用于校准I / Q接收机的方法，并且包括接收指示I / Q接收机的I和Q信道之间的失配的第一失配参数; 以及使用多项式模型从所述第一失配参数估计第二失配参数。
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公开(公告)号：US10944162B2
公开(公告)日：2021-03-09
申请号：US15618542
申请日：2017-06-09
申请人： Analog Devices, Inc.
发明人： Yosef Stein
摘要： A passive wireless sensor system is disclosed that includes components fabricated from carbon nanotube (CNT) structures. In some situations, the passive wireless sensor system includes a CNT structure sensor and an antenna that communicates wirelessly by altering an impedance of the antenna. The passive wireless sensor system includes a non-battery-powered energy storage device that harvests energy from carrier signals received at the antenna. The antenna and the energy storage device can be formed from CNT structures.
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公开(公告)号：US09306782B2
公开(公告)日：2016-04-05
申请号：US14657029
申请日：2015-03-13
申请人： Analog Devices, Inc.
发明人： Wei An , Yosef Stein
IPC分类号： H04L27/38 , H04L27/227 , H04L7/00 , H03D3/00
CPC分类号： H04L27/2276 , H03D3/009 , H04L7/0079 , H04L27/3863
摘要： Apparatus and method for quadrature error correction for narrowband or tone signal are disclosed. An analog circuit receives a modulated signal and processes in-phase signal and quadrature-phase signal in in-phase and quadrature-phase signal paths respectively. A digital signal processor performs discrete Fourier transform on each of the in-phase and quadrature-phase signals and determines statistical parameters responsive to mismatch characteristics to estimate quadrature error correction.
摘要翻译： 公开了用于窄带或音调信号的正交纠错的装置和方法。 模拟电路接收调制信号，分别处理同相和正交相信号路径中的同相信号和正交相位信号。 数字信号处理器对每个同相和正交相位信号执行离散傅立叶变换，并且确定响应失配特性的统计参数以估计正交误差校正。
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公开(公告)号：US20220128609A1
公开(公告)日：2022-04-28
申请号：US17511065
申请日：2021-10-26
申请人： Analog Devices, Inc.
摘要： Aspects of the present disclosure are directed to a measurement module for measurement of a multi-electrode resistive sensing element with improved noise performance and accuracy. In some embodiments, stimulation to the sensing element is provided by a current path that originates from a signal source, through a switch block, through a pair of terminals, and ending at a reference node such as ground. An analog-to-digital converter (ADC) is coupled directly to one or both of the terminals to digitize a voltage. The ADC is coupled to terminals on the sensing element to measure a sensed voltage signal before the sensed signal goes through the switch block. As a result, the measured voltage signal may be free of noise that could be picked up from passing through the switch block, and accuracy of the resistance measurements on the sensing element can be improved.
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公开(公告)号：US10476293B2
公开(公告)日：2019-11-12
申请号：US15481259
申请日：2017-04-06
申请人： Analog Devices, Inc.
发明人： Roman Trogan , Yosef Stein
摘要： Flexible antennas for harvesting electromagnetic energy are described. The flexible antenna may be a far field antenna and may comprise a flexible substrate, a first metal layer disposed on one side of the flexible substrate, and a second metal layer disposed on an opposite side of the flexible substrate. The first and second metal layers may be connected through one or more vias. The first metal layer may be sized to capture electromagnetic energy at a frequency in an ISM band.
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公开(公告)号：US20170294701A1
公开(公告)日：2017-10-12
申请号：US15481259
申请日：2017-04-06
申请人： Analog Devices, Inc.
发明人： Roman Trogan , Yosef Stein
摘要： Flexible antennas for harvesting electromagnetic energy are described. The flexible antenna may be a far field antenna and may comprise a flexible substrate, a first metal layer disposed on one side of the flexible substrate, and a second metal layer disposed on an opposite side of the flexible substrate. The first and second metal layers may be connected through one or more vias. The first metal layer may be sized to capture electromagnetic energy at a frequency in an ISM band.
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公开(公告)号：US12044715B2
公开(公告)日：2024-07-23
申请号：US17511065
申请日：2021-10-26
申请人： Analog Devices, Inc.
摘要： Aspects of the present disclosure are directed to a measurement module for measurement of a multi-electrode resistive sensing element with improved noise performance and accuracy. In some embodiments, stimulation to the sensing element is provided by a current path that originates from a signal source, through a switch block, through a pair of terminals, and ending at a reference node such as ground. An analog-to-digital converter (ADC) is coupled directly to one or both of the terminals to digitize a voltage. The ADC is coupled to terminals on the sensing element to measure a sensed voltage signal before the sensed signal goes through the switch block. As a result, the measured voltage signal may be free of noise that could be picked up from passing through the switch block, and accuracy of the resistance measurements on the sensing element can be improved.
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公开(公告)号：US11991604B2
公开(公告)日：2024-05-21
申请号：US16994034
申请日：2020-08-14
申请人： Analog Devices, Inc.
CPC分类号： H04W4/38 , G01M5/0033 , G01M5/0041 , H04W84/18
摘要： Systems and methods are provided for wirelessly communicating with multiple sensors. In particular, a multi-sensor platform is provided that acts as an intermediary node and can communicate with multiple integrity sensors. The integrity sensors are each coupled via a wired connection to the multi-sensor platform, and the multi-sensor platform is powered wirelessly by a radiofrequency transmitter. The radiofrequency transmitter can receive data from multiple sensors via one node, the multi-sensor platform, thus allowing the radiofrequency transmitter to have a static transmission beam.
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