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1. 发明授权

US11385269B2 Frequency sensor 有权
公开(公告)号：US11385269B2
公开(公告)日：2022-07-12
申请号：US16767594
申请日：2018-11-28
申请人： INL—International Iberian Nanotechnology Laboratory
发明人： Alex Jenkins , Ricardo Alexandre De Matos Antunes Ferreira
IPC分类号： G01R23/06 , H03B15/00 , G01R33/09 , H01F10/32 , B82Y25/00 , H03B28/00 , G11B5/39 , H01F1/00
摘要： A frequency sensor is provided. The frequency sensor may include: a magnetoresistive nano-oscillator including a magnetic heterostructure of at least a magnetic free layer, a magnetic reference layer and a non-magnetic intermediate layer arranged between the magnetic free layer and the magnetic reference layer; a coupling arrangement for coupling an incoming signal to at least one magnetic mode of the magnetic free layer, and a frequency estimator. The frequency estimator may be configured to: perform a plurality of voltage measurements across the magnetoresistive nano-oscillator over time; calculate a time averaged voltage across the magnetoresistive nano-oscillator based on the plurality of voltage measurements; estimate, over a finite range of frequencies, a frequency of the incoming signal based on the calculated time averaged voltage, and output a signal representative of the estimated frequency. A method of estimating a frequency of an incoming signal is also provided.

2. 发明授权

US11329658B2 Oscillator calibration from over-the air signals 有权
公开(公告)号：US11329658B2
公开(公告)日：2022-05-10
申请号：US17068275
申请日：2020-10-12
申请人： Wiliot, Ltd.
发明人： Alon Yehezkely
IPC分类号： H03L7/099 , H03L7/08 , H03B28/00 , H03L7/181 , H03L7/23
摘要： An oscillator calibration circuit is presented. The oscillator calibration includes a first frequency locking circuit (FLC) coupled to a first oscillator, wherein the first FLC calibrates the frequency of the first oscillator using an over-the-air reference signal, wherein the first FLC calibrates the first oscillator prior to a data transmission session and remains free running during the data transmission session; and a second FLC coupled to a second oscillator, wherein the second FLC calibrates the frequency of the second oscillator using the over-the-air reference signal, wherein the second FLC calibrates the second oscillator immediately prior to a data transmission session and remains free running during the data transmission session.

3. 发明授权

US10911055B1 Oscillator self-calibration 有权
公开(公告)号：US10911055B1
公开(公告)日：2021-02-02
申请号：US16728070
申请日：2019-12-27
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Bichoy Bahr , Kaichien Tsai , Scott R. Summerfelt
IPC分类号： H03L7/099 , H03L7/24 , H03L7/08 , H03L7/085 , H03B1/00 , H03L1/02 , H03L7/00 , H03B28/00 , H01L25/065
摘要： An oscillator assembly includes a scribe seal, an oscillator circuit, and a calibration circuit. The oscillator circuit includes an output. The calibration circuit is coupled to the oscillator circuit. The calibration circuit includes a reference frequency terminal, a conductor coupled to the reference frequency terminal, and an oscillator input terminal. The conductor extends to an edge of the oscillator circuit assembly and penetrates the scribe seal. The oscillator input terminal is coupled to the output of the oscillator circuit.

4. 发明申请

US20190304270A1 SINGLE-ELEMENT DOOR/WINDOW OPENING DETECTOR 审中-公开
公开(公告)号：US20190304270A1
公开(公告)日：2019-10-03
申请号：US16428200
申请日：2019-05-31
申请人： TYCO Fire & Security GMBH
发明人： Roni Shamsian , Max Drankovsky , Alexander Shapira
IPC分类号： G08B13/08 , G01D5/24 , G01V3/12 , G08B13/24 , H04B1/04 , G01B7/02 , H04B1/38 , H03B28/00
摘要： A door/window opening detector including an antenna having at least a first resonant frequency and a second resonant frequency associated therewith, the second resonant frequency being different from the first resonant frequency, the antenna having the first resonant frequency when in proximity to a door/window having a given dielectric constant and the second resonant frequency when not in proximity to a door/window having the given dielectric constant, and an alarm indication generator operable, in response to receiving an indication that a resonant frequency of the antenna has changed from the first resonant frequency to the second resonant frequency, for generating an alarm indication of opening of the door/window.

5. 发明授权

US10355687B2 Wave loss detection circuit for drive signal and switching transistor drive circuit 有权
公开(公告)号：US10355687B2
公开(公告)日：2019-07-16
申请号：US15354488
申请日：2016-11-17
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Zhen Cao , Yunfeng Liu , Yanzhong Zhang
IPC分类号： G01R19/00 , H03K5/19 , H03K17/567 , H03B28/00 , H03K4/08 , H03K7/08 , G01R31/02 , H03K17/0812 , H03K17/12 , H03K17/16 , H03K17/18 , G01R31/44
摘要： A wave loss detection circuit includes: an anode of the diode receives a first drive signal, and a cathode of the diode is connected to a first end of the first resistor; a second end of the first resistor is connected to a first end of the first energy storage unit, a first end of the second resistor, and a first input end of the comparison unit; a second end of the first energy storage unit and a second end of the second resistor are connected to a ground level, and a resistance of the first resistor is less than a resistance of the second resistor; a second input end of the comparison unit is configured to receive a threshold voltage, and if a voltage signal received by the first input end is less than the threshold voltage, which indicates that a wave loss occurs in the first drive signal.

6. 发明授权

US09853809B2 Method and apparatus for hybrid encryption 有权
公开(公告)号：US09853809B2
公开(公告)日：2017-12-26
申请号：US15087422
申请日：2016-03-31
申请人： The Board of Regents of The University of Texas System
发明人： Benito R. Fernández , José R. Capriles-Grané , Michael D. Bryant , John W. Hall , Carlos A. García
IPC分类号： H04K1/00 , H04L9/00 , G06F1/04 , H03K3/84 , H03B28/00 , H03B29/00 , H03B5/12
CPC分类号： H04L9/001 , G06F1/04 , H03B5/1259 , H03B28/00 , H03B29/00 , H03K3/84 , H04L2209/12
摘要： Described herein is a combination of mixed-signal hardware and software that is capable or realizing hybrid chaotic oscillators that can be tuned digitally. This includes the type/class of chaotic oscillator, initial conditions, nonlinear elements, thresholds, nonlinear event surfaces, delays, etc. At the same time, tunable methods of how to use the chaotic oscillator information to encrypt and decrypt both analog and digital information is presented. This will make the secure information not vulnerable by digital information compromises or hardware breach.

7. 发明申请

US20170264241A1 CLOCK GENERATION CIRCUITRY 有权
公开(公告)号：US20170264241A1
公开(公告)日：2017-09-14
申请号：US15455833
申请日：2017-03-10
申请人： SOCIONEXT INC.
发明人： Ian Juso DEDIC , David Timothy ENRIGHT
IPC分类号： H03B28/00 , H03M1/66 , H01L23/00 , H03M1/12
CPC分类号： H03B28/00 , H01L24/16 , H01L2224/16225 , H01L2924/14211 , H01L2924/14253 , H03B5/18 , H03B5/1805 , H03B5/1841 , H03B2200/0016 , H03K3/0315 , H03M1/12 , H03M1/66
摘要： There is disclosed herein clock generation circuitry, in particular rotary travelling wave oscillator circuitry. Such circuitry comprises a pair of signal lines connected together to form a dosed loop and arranged such that they define at least one transition section where both said lines in a first portion of the pair cross from one lateral side of both said lines in a second portion of the pair to the other lateral side of both said lines in the second portion of the pair.

8. 发明授权

US09459295B2 Measurement system utilizing a frequency-dithered local oscillator 有权
标题翻译：利用频率抖动本地振荡器的测量系统
公开(公告)号：US09459295B2
公开(公告)日：2016-10-04
申请号：US13938495
申请日：2013-07-10
申请人： NATIONAL INSTRUMENTS CORPORATION
发明人： Daniel S. Wertz
IPC分类号： H03B28/00 , G01R23/16 , G01R27/28
CPC分类号： G01R23/16 , G01R27/28 , H03B28/00
摘要： An improved receiver system may include an input to receive an input signal, and a signal generating circuit to generate a desired oscillator signal that is a single sideband radio frequency signal of time varying frequency. The receiver may also include a downconversion stage to generate an intermediate frequency (IF) signal based on the input signal and the desired oscillator signal. A signal processing block in the receiver may be used to produce an output signal based on the IF signal by frequency shifting the IF signal by an amount that compensates for the time varying frequency of the desired oscillator signal. The desired oscillator signal may be generated using a vector signal generator that receives a control value from the signal processing block, converts the control value to a pair of analog input signals, and generates the desired oscillator signal by quadrature modulating the pair of analog input signals.
摘要翻译：改进的接收机系统可以包括用于接收输入信号的输入端和产生作为时变频率的单个边带射频信号的期望振荡器信号的信号发生电路。接收机还可以包括下变频级，以根据输入信号和期望的振荡器信号产生中频（IF）信号。接收机中的信号处理块可以用于通过对IF信号进行频移以补偿期望振荡器信号的时变频率的量，基于IF信号来产生输出信号。可以使用从信号处理块接收控制值的矢量信号发生器来产生期望的振荡器信号，将控制值转换成一对模拟输入信号，并通过对该模拟输入信号对进行正交调制来产生期望的振荡器信号。

9. 发明申请

US20160028369A1 RESONATOR ELEMENT, RESONATOR, OSCILLATOR, ELECTRONIC APPARATUS, AND MOBILE OBJECT 审中-公开
标题翻译：谐振器元件，谐振器，振荡器，电子设备和移动对象
公开(公告)号：US20160028369A1
公开(公告)日：2016-01-28
申请号：US14808221
申请日：2015-07-24
申请人： Seiko Epson Corporation
发明人： Yusuke YAMAMOTO
IPC分类号： H03H9/19 , H03B28/00
CPC分类号： H03H9/19 , H03B28/00 , H03H9/0519 , H03H9/0542 , H03H9/1021 , H03H9/174
摘要： A resonator element includes a substrate region sandwiched by first and second excitation electrodes. The region is located within a quadrangle having four 90° corners, a pair of first sides along a thickness-shear vibration direction, and a pair of second sides perpendicular to the vibration direction. The region includes a side or a circular arc in contact with each of the first and second sides, and an outer edge recessed from at least two corners of the quadrangle in a direction intersecting the vibration direction. Further, assuming a maximum length of the region along the vibration direction is Lx, and a length of the outer edge along the vibration direction is lx, 13.7%≦(lx/Lx)≦46.0%.
摘要翻译：谐振器元件包括被第一和第二激励电极夹持的衬底区域。该区域位于具有四个90°角，沿着厚度 - 剪切振动方向的一对第一侧和垂直于振动方向的一对第二侧的四边形内。该区域包括与第一和第二侧中的每一个相接触的侧面或圆弧，以及从四边形的至少两个角部沿与振动方向相交的方向凹陷的外边缘。此外，假设沿着振动方向的区域的最大长度为Lx，并且外边缘沿振动方向的长度为lx，13.7％＆nlE;（lx / Lx）＆nlE; 46.0％。

10. 发明授权

US09172359B2 Flexible chirp generator 有权
标题翻译：柔性啁啾发生器
公开(公告)号：US09172359B2
公开(公告)日：2015-10-27
申请号：US14197022
申请日：2014-03-04
申请人： RAYTHEON COMPANY
发明人： Howard S. Nussbaum
IPC分类号： H03B28/00 , H03K5/06 , H03K5/01
CPC分类号： H03K5/06 , G06F1/022 , G06F1/0321 , G06F8/33 , H03B28/00 , H03K5/01
摘要： A processing-efficient chirp generator that allows flexibility in controlling phase, frequency and slope, i.e., rate of change of frequency. In one embodiment, a fine phase propagation block generates phase values in increments of the fine time step, each phase value also offset from other phase values by multiples of a coarse time step. The phase samples are realigned in time after conversion to digital-to-analog converter (DAC) values.
摘要翻译：一种处理有效的啁啾发生器，其允许控制相位，频率和斜率的灵活性，即频率变化率。在一个实施例中，精细相位传播块以精细时间步长的增量生成相位值，每个相位值也与粗略时间步长的其它相位值偏移倍数。在转换为数模转换器（DAC）值之后，相位采样在时间上重新对准。

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