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公开(公告)号：US20230022747A1
公开(公告)日：2023-01-26
申请号：US17875552
申请日：2022-07-28
Inventor： Jenshan Lin , Lawrence Fomundam
Abstract: Various examples are provided for wireless power transfer to implants. In one example, a system includes a radio frequency (RF) power source and a transmitter (TX) array comprising an excitation coil and resonant coils distributed about the excitation coil. The TX array can transfer power from the RF power source to a biomedical implant inserted below a skin surface of a subject when the TX array is positioned on the skin surface adjacent to the biomedical implant. A receiver (RX) coil of the biomedical implant can inductively couple with the TX array for the power transfer. The resonant coils can allow power transfer when the RX coil is not aligned with the excitation coil.
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公开(公告)号：US20210393208A1
公开(公告)日：2021-12-23
申请号：US17462665
申请日：2021-08-31
Inventor： Jenshan Lin , Linda Frances Hayward , Tien-yu Haung
IPC: A61B5/00 , A61B5/024 , G01S13/88 , A61B5/0205 , A61B5/08 , A61B5/113 , G01S7/41 , G01S13/536
Abstract: Various examples are provided for accurate heart rate measurement. In one example, a method includes determining a respiratory rate (RR) and respiration displacement from radar-measured cardiorespiratory motion data; adjusting notch depths of a harmonics comb notch digital filter (HCNDF) based upon the respiration displacement; generating filtered cardiorespiratory data by filtering the radar-measured cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data. In another example, a system includes radar circuitry configured to receive a cardiorespiratory motion signal reflected from a monitored subject; and signal processing circuitry configured to determine a respiration displacement based upon the cardiorespiratory motion signal; adjust notch depths of a HCNDF based upon the respiration displacement; filter the cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data.
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公开(公告)号：US20190076096A1
公开(公告)日：2019-03-14
申请号：US16093846
申请日：2017-04-14
Inventor： Jenshan Lin , Linda Frances Hayward , Tien-yu Haung
Abstract: Various examples are provided for accurate heart rate measurement. In one example, a method includes determining a respiratory rate (RR) and respiration displacement from radar-measured cardiorespiratory motion data; adjusting notch depths of a harmonics comb notch digital filter (HCNDF) based upon the respiration displacement; generating filtered cardiorespiratory data by filtering the radar-measured cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data. In another example, a system includes radar circuitry configured to receive a cardiorespiratory motion signal reflected from a monitored subject; and signal processing circuitry configured to determine a respiration displacement based upon the cardiorespiratory motion signal; adjust notch depths of a HCNDF based upon the respiration displacement; filter the cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data.
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公开(公告)号：US20160336989A1
公开(公告)日：2016-11-17
申请号：US15154324
申请日：2016-05-13
Inventor： Jenshan Lin , Changyu Wei
CPC classification number: A61B5/7475 , A61B5/024 , A61B5/0507 , H04L27/0002 , H04L27/2273 , H04L27/3881
Abstract: Various examples of methods and systems are provided for vibrational frequency detection (e.g., noncontact vital sign detection) using digitally assisted low intermediate frequency (IF) architectures. In one example, a transceiver system is configured to transmit a modulated signal generated by modulating a local oscillator (LO) signal with an IF carrier; generate an IF signal by down converting a received signal comprising backscatter with the LO signal; and simultaneously sample the IF carrier and the IF signal. A vibration frequency can be determined by demodulating the sampled IF signal with the sampled IF carrier. In another example, a method includes generating and transmitting a modulated signal; receiving backscatter of the modulated signal; generating an IF signal by down converting the received signal with the LO signal; simultaneously sampling the IF carrier and the IF signal; and determining a vibration frequency by demodulating the sampled IF signal with the sampled IF carrier.
Abstract translation: 提供了使用数字辅助低中频（IF）架构的振动频率检测（例如，非接触生命体征检测）的方法和系统的各种示例。 在一个示例中，收发器系统被配置为发送通过用IF载波调制本地振荡器（LO）信号而产生的调制信号; 通过利用LO信号对包含反向散射的接收信号进行下变频来产生IF信号; 并同时采样IF载波和IF信号。 可以通过用采样的IF载波解调采样的IF信号来确定振动频率。 在另一示例中，一种方法包括产生和发送调制信号; 接收调制信号的反向散射; 通过用LO信号对接收信号进行下变频来产生IF信号; 同时采样IF载波和IF信号; 以及通过使用采样的IF载波解调采样的IF信号来确定振动频率。
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公开(公告)号：US10978908B2
公开(公告)日：2021-04-13
申请号：US16077239
申请日：2017-02-10
Inventor： Patrick Riehl , Jenshan Lin , Ron-Chi Kuo
Abstract: Various examples are provided for wireless power charging for versatile receiver positions. In one example, a three dimensional array of transmitter coils is positioned around a charging area. A control circuit causes the array of transmitter coils to generate a magnetic field that charges a device with any position and orientation in the charging area.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09477812B2
公开(公告)日：2016-10-25
申请号：US14276300
申请日：2014-05-13
Inventor： Jenshan Lin , Changzhi Li , Ya-Chi Liu
CPC classification number: A61B5/7214 , A61B5/0205 , A61B5/024 , A61B5/05 , A61B5/0507 , A61B5/0816 , A61B5/6823 , A61B5/7278 , A61B5/742 , G01S7/032 , G01S7/354 , G01S7/40 , G01S13/34 , G01S13/536 , G01S13/87 , G01S13/88 , G06F17/14 , G06F19/00 , G06F19/3418 , G16H80/00
Abstract: A method and system for cancelling body movement effect for non-contact vital sign detection is described. The method begins with sending on a first electromagnetic wave transceiver a first electromagnetic signal with a first frequency to a first side of a body, such as a person or animal. Simultaneously using a second electromagnetic wave transceiver a second electromagnetic signal is sent with a second frequency to a second side of a body, wherein the first frequency and the second frequency are different frequencies. A first reflected electromagnetic signal reflected back in response to the first electromagnetic wave on the first transceiver is received and a first baseband complex signal is extracted. Likewise a second reflected electromagnetic signal reflected back in response to the second electromagnetic wave on the second transceiver is received and a second baseband complex signal is extracted. The first baseband complex signal is mathematically combined with the second baseband complex signal to cancel out a Doppler frequency drift therebetween to yield a periodic Doppler phase effect.
Abstract translation: 描述了用于消除非接触式生命体检测的身体运动效应的方法和系统。 该方法开始于在第一电磁波收发器上发送具有第一频率的第一电磁信号到诸如人或动物的身体的第一侧。 同时使用第二电磁波收发器，第二电磁信号以第二频率发送到身体的第二侧，其中第一频率和第二频率是不同的频率。 接收响应于第一收发器上的第一电磁波反射回的第一反射电磁信号，并且提取第一基带复信号。 类似地，接收响应于第二收发器上的第二电磁波反射回的第二反射电磁信号，并且提取第二基带复信号。 第一基带复信号与第二基带复信号数学地组合以抵消其间的多普勒频移，产生周期性多普勒相位效应。
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公开(公告)号：US20140346875A1
公开(公告)日：2014-11-27
申请号：US14368217
申请日：2012-12-24
Inventor： Raul Andres Chinga , Karl R. Zawoy , Subrata Roy , Jenshan Lin
CPC classification number: H02M1/08 , H01J37/32348 , H02M7/44 , H02M7/53803 , H02M2001/0003 , H02M2007/4815 , H05H1/46 , H05H2001/4682 , Y02B70/1441 , Y10T307/406
Abstract: Embodiments of the subject invention are drawn to power supply units and systems for supplying power to loads. Specific embodiments relate to systems incorporating the loads. The power supply units and systems can include a feedback mechanism for monitoring the system and maintaining a parameter of interest at or near a desired value (e.g., for maintaining the frequency of operation at or near resonance). The feedback mechanism is configured such that, if the at least one parameter indicates that the frequency of operation is away from a resonant frequency of the power amplifier, the feedback mechanism adjusts the frequency of operation closer to the resonant frequency of the power amplifier. The at least one load can have a variable impedance, though embodiments are not limited thereto.
Abstract translation: 本发明的实施例涉及用于向负载供电的供电单元和系统。 具体实施例涉及包含负载的系统。 电源单元和系统可以包括用于监视系统并将感兴趣的参数维持在或接近期望值的反馈机制（例如，用于维持在或接近共振的操作频率）。 反馈机构被配置为使得如果至少一个参数指示操作频率远离功率放大器的谐振频率，则反馈机构调节操作频率更接近功率放大器的谐振频率。 至少一个负载可以具有可变阻抗，尽管实施例不限于此。
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公开(公告)号：US12051911B2
公开(公告)日：2024-07-30
申请号：US16338432
申请日：2017-09-29
Inventor： Jenshan Lin , Ron-Chi Kuo , Hasnain Akram
Abstract: Various examples are provided for power amplifiers for coil array systems, which include load-independent Class E power amplifiers. In one example, a wireless charging system includes a three-dimensional (3D) coil array; and control circuitry configured to adjust a magnetic field generated by the 3D coil array, the control circuitry comprising a switching structure coupled to transmitting (TX) coils of the 3D coil array via independent matching networks. The independent matching networks can be LCL-matching networks.
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公开(公告)号：US11944462B2
公开(公告)日：2024-04-02
申请号：US17462665
申请日：2021-08-31
Inventor： Jenshan Lin , Linda Frances Hayward , Tien-yu Haung
IPC: A61B5/024 , A61B5/00 , A61B5/0205 , A61B5/08 , A61B5/113 , G01S7/41 , G01S13/536 , G01S13/88
CPC classification number: A61B5/725 , A61B5/0205 , A61B5/024 , A61B5/0816 , A61B5/1135 , A61B5/4839 , A61B5/7246 , G01S7/415 , G01S13/536 , G01S13/88
Abstract: Various examples are provided for accurate heart rate measurement. In one example, a method includes determining a respiratory rate (RR) and respiration displacement from radar-measured cardiorespiratory motion data; adjusting notch depths of a harmonics comb notch digital filter (HCNDF) based upon the respiration displacement; generating filtered cardiorespiratory data by filtering the radar-measured cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data. In another example, a system includes radar circuitry configured to receive a cardiorespiratory motion signal reflected from a monitored subject; and signal processing circuitry configured to determine a respiration displacement based upon the cardiorespiratory motion signal; adjust notch depths of a HCNDF based upon the respiration displacement; filter the cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data.
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公开(公告)号：US20190353752A1
公开(公告)日：2019-11-21
申请号：US16531902
申请日：2019-08-05
Inventor： Jenshan Lin , Te-Yu Kao
Abstract: Method and apparatus for detecting a movement, such as two or more periodic vibrations, of a target, by sending a radar signal, e.g., near 60 GHz, at the target and processing the signal reflected by the target. One or more components of the movement can have a predominant frequency, such as a frequency of vibration, and two or more components can have different frequencies and, optionally, different magnitudes. A quadrature receiver processes the received signal to produce a base band output signal having in-phase (I) and quadrature-phase (Q) outputs. The in-phase (I) and quadrature-phase (Q) outputs are cross-referenced and real target movement frequency recovered directly in the time domain. System nonlinearity, which does not occur simultaneously on the I and Q channels, is identified and removed. Radar signals having wavelengths near one or more of the target movement magnitudes can be used.
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