知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

33 records (took 0.015 seconds)

    Frequency-converted frequency-modulated self-injection-locked radar
    2.
    发明授权
    Frequency-converted frequency-modulated self-injection-locked radar 有权

    公开(公告)号：US11747458B2

    公开(公告)日：2023-09-05

    申请号：US17197132

    申请日：2021-03-10

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Fu-Kang Wang ,  Pin-Hsun Juan ,  Chao-Kai Wen ,  De-Ming Chian

    IPC: G01S13/34 ,  G01S7/35

    CPC classification number: G01S13/341 ,  G01S7/358

    Abstract: A FCFMSIL radar includes a SILO, a frequency conversion unit, an antenna unit, a demodulation unit and a processing unit. The frequency conversion unit converts an oscillation signal of the SILO into a FMCW signal. The antenna unit transmits the FMCW signal to an area as a transmitted signal and receives a reflected signal from the area as a received signal. The frequency conversion unit converts the received signal into an injection signal and injects it into the SILO. The demodulation unit demodulates the oscillation signal into an in-phase demodulated signal and a quadrature demodulated signal. The processing unit processes the in-phase and the quadrature demodulated signals to obtain a baseband signal and thus acquire a phase and a frequency of a tone in the frequency-domain baseband signal, and determines the tone corresponding to one or multiple objects based on the phase and frequency of the tone.

    WIDEBAND FREQUENCY SYNTHESIZER AND FREQUENCY SYNTHESIZING METHOD THEREOF
    3.
    发明申请
    WIDEBAND FREQUENCY SYNTHESIZER AND FREQUENCY SYNTHESIZING METHOD THEREOF 有权
    宽带频率合成器及其频率合成方法

    公开(公告)号：US20140327478A1

    公开(公告)日：2014-11-06

    申请号：US13961896

    申请日：2013-08-08

    Applicant: National Sun Yat-sen University

    Inventor： Tzyy-Sheng Horng ,  Kang-Chun Peng ,  Fu-Kang Wang

    IPC: H03L7/08

    CPC classification number: H03L7/18 ,  H03L2207/12

    Abstract: A wideband frequency synthesizer and a frequency synthesizing method thereof are provided. The wideband frequency synthesizer includes a phase-locked loop unit, a first voltage-controlled oscillating unit and a first frequency mixer unit. The phase-locked loop unit receives a reference signal and a feedback signal and generates a first oscillating signal according to the reference signal and the feedback signal. The first voltage-controlled oscillating unit generates a second oscillating signal. The first frequency mixer is coupled to the phase-locked loop unit and the first voltage-controlled oscillating unit, receives the first oscillating signal and the second oscillating signal for mixing frequencies of the first oscillating signal and the second oscillating signal to generate an output signal and taking the output signal as the feedback signal for outputting to the phase-locked loop unit.

    Abstract translation: 提供了一种宽带频率合成器及其频率合成方法。 宽带频率合成器包括锁相环单元，第一压控振荡单元和第一混频单元。 锁相环单元接收参考信号和反馈信号，并根据参考信号和反馈信号产生第一振荡信号。 第一压控振荡单元产生第二振荡信号。 第一混频器耦合到锁相环单元和第一压控振荡单元，接收第一振荡信号和第二振荡信号，用于混合第一振荡信号和第二振荡信号的频率，以产生输出信号 并将输出信号作为反馈信号输出到锁相环单元。

    Frequency synthesizer and frequency synthesis method thereof
    4.
    发明授权
    Frequency synthesizer and frequency synthesis method thereof 有权
    频率合成器及其频率合成方法

    公开(公告)号：US08736326B1

    公开(公告)日：2014-05-27

    申请号：US13900555

    申请日：2013-05-23

    Applicant: National Sun Yat-sen University

    Inventor： Tzyy-Sheng Horng ,  Chung-Hung Chen ,  Fu-Kang Wang

    IPC: H03L7/06

    CPC classification number: H03L7/185 ,  H03L7/089

    Abstract: A frequency synthesizer and a frequency synthesis method thereof are provided. The frequency synthesizer includes a phase-locked loop unit, a voltage-controlled oscillating unit, and a frequency mixing unit. The phase-locked loop unit receives a reference signal and a feedback injection signal and generates a first oscillating signal according to the reference signal and the feedback injection signal. The voltage-controlled oscillating unit receives the feedback injection signal and generates a second oscillating signal according to the feedback injection signal. The frequency mixing unit is coupled to the phase-locked loop unit and the voltage-controlled oscillating unit, receives the first oscillating signal and the second oscillating signal, and mixes the first oscillating signal and the second oscillating signal to generate the feedback injection signal and an output signal.

    Abstract translation: 提供了一种频率合成器及其频率合成方法。 频率合成器包括锁相环单元，压控振荡单元和频率混合单元。 锁相环单元接收参考信号和反馈注入信号，并根据参考信号和反馈注入信号产生第一振荡信号。 压控振荡单元接收反馈注入信号，并根据反馈注入信号产生第二振荡信号。 混频单元耦合到锁相环单元和压控振荡单元，接收第一振荡信号和第二振荡信号，并混合第一振荡信号和第二振荡信号以产生反馈注入信号， 输出信号。

    REAL NUMBER SINE/COSINE WAVE BASIS FUNCTION TRANSFORM CIRCUIT
    5.
    发明公开
    REAL NUMBER SINE/COSINE WAVE BASIS FUNCTION TRANSFORM CIRCUIT 审中-公开

    公开(公告)号：US20230333235A1

    公开(公告)日：2023-10-19

    申请号：US17879987

    申请日：2022-08-03

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Fu-Kang Wang ,  Ju-Yin Shih

    IPC: G01S13/58 ,  G01S7/295 ,  G01S7/40

    CPC classification number: G01S13/581 ,  G01S7/295 ,  G01S7/40

    Abstract: A real number sine/cosine wave basis function transform circuit includes a window segmentation element, a first transform element, a second transform element and a root-sum-square (RSS) element. The window segmentation element is provided to segment an in-phase output signal and a quadrature output signal to output an in-phase window signal and a quadrature window signal. The first and second transform elements are provided to transform the in-phase window signal and the quadrature window signal using a real number sine/cosine wave basis function to obtain a first transformed signal and a second transformed signal, respectively. The RSS element is provided to calculate an RSS value of the first and second transformed signals and output a real number sine/cosine wave basis function transformed signal.

    MULTIPLE-TARGET VITAL SIGN DETECTOR AND DETECTION METHOD USING THE SAME
    6.
    发明申请
    MULTIPLE-TARGET VITAL SIGN DETECTOR AND DETECTION METHOD USING THE SAME 有权

    公开(公告)号：US20210109208A1

    公开(公告)日：2021-04-15

    申请号：US17064707

    申请日：2020-10-07

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Tzyy-Sheng Horng ,  Fu-Kang Wang ,  Wei-Chih Su ,  Mu-Cyun Tang ,  Rezki El Arif

    IPC: G01S13/89 ,  A61B5/05 ,  G01S7/35

    Abstract: A multiple-target vital sign detector includes a self-injection-locked oscillator (SILO), a chirp up/down converter, a frequency demodulator and a multiple-target vital sign processor. The chirp up/down converter performs conversion from an oscillation signal generated by the SILO to a frequency-modulated continuous wave (FMCW) signal to detect an area and from a received FMCW signal reflected from the area to an injection signal, while the SILO is injected with the injection signal to enter a self-injection-locked state. The locations and vital signs of multiple subjects are extracted from the oscillation signal using the frequency demodulator and the multiple-target vital sign processor. The objective of using the SILO is to improve the sensitivity of the FMCW detection process so as to more effectively distinguish the vital signs of multiple subjects at different locations.

    Vital sign detection system with random body movement cancellation
    7.
    发明授权
    Vital sign detection system with random body movement cancellation 有权

    公开(公告)号：US10506981B2

    公开(公告)日：2019-12-17

    申请号：US15807707

    申请日：2017-11-09

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Tzyy-Sheng Horng ,  Fu-Kang Wang ,  Mu-Cyun Tang

    IPC: A61B5/00 ,  A61B5/05 ,  G01S13/58 ,  G01S13/00 ,  G01S7/35 ,  A61B5/113 ,  G01S13/88

    Abstract: A vital sign detection system includes a radar device, a nonreciprocal network, a first antenna and a second antenna. An output signal from the radar device is delivered to the first antenna via the nonreciprocal network and then transmitted to a first side of a biological subject via the first antenna. A first reflection signal from the first side of the biological subject is received by the first antenna and then delivered to the second antenna via the nonreciprocal network and then transmitted to a second side of the biological subject via the second antenna. A second reflection signal from the second side of the biological subject is received by the second antenna and then delivered to the radar device via the nonreciprocal network for vital sign detection with random body movement cancellation.

    Wireless detection devices and wireless detection methods
    9.
    发明授权
    Wireless detection devices and wireless detection methods 有权
    无线检测设备和无线检测方法

    公开(公告)号：US09423496B2

    公开(公告)日：2016-08-23

    申请号：US13787699

    申请日：2013-03-06

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Tzyy-Sheng Horng ,  Fu-Kang Wang ,  Kang-Chun Peng

    IPC: G01S13/04 ,  G01S13/08 ,  G01S7/41 ,  G01S13/34 ,  G01S13/88 ,  A61B5/024 ,  A61B5/08

    CPC classification number: G01S13/08 ,  A61B5/024 ,  A61B5/0816 ,  G01S7/415 ,  G01S13/34 ,  G01S13/888

    Abstract: A wireless detection device is provided, comprising a voltage control oscillation unit, a transceiving unit, demodulation unit and processing unit. The voltage control oscillation unit generates different oscillation signals according to analog control voltages and corresponding injection signals. The transceiving unit outputs first wireless signals to a predetermined area according to the oscillation signals and receives second wireless signals generated by reflection of the first wireless signals to generate the injection signal. The demodulation unit demodulates the oscillation signals into first voltage signals. The processing unit subtracts the corresponding analog control voltages from the first voltage signals to generate second voltage signals, and when the variation of the second voltage signals exceeds a predetermined value on a target frequency in frequency domain, the processing unit calculates a real distance between an object and the transceiving unit.

    Abstract translation: 提供一种无线检测装置，包括电压控制振荡单元，收发单元，解调单元和处理单元。 电压控制振荡单元根据模拟控制电压和相应的注入信号产生不同的振荡信号。 收发单元根据振荡信号将第一无线信号输出到预定区域，并接收由第一无线信号的反射产生的第二无线信号以产生注入信号。 解调单元将振荡信号解调为第一电压信号。 处理单元从第一电压信号中减去对应的模拟控制电压以产生第二电压信号，并且当第二电压信号的变化在频域中的目标频率上超过预定值时，处理单元计算一个 对象和收发单元。

    WIRELESS DETECTION DEVICES AND WIRELESS DETECTION METHODS
    10.
    发明申请
    WIRELESS DETECTION DEVICES AND WIRELESS DETECTION METHODS 有权
    无线检测设备和无线检测方法

    公开(公告)号：US20130338515A1

    公开(公告)日：2013-12-19

    申请号：US13787699

    申请日：2013-03-06

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Tzyy-Sheng Horng ,  Fu-Kang Wang ,  Kang-Chun Peng

    IPC: G01S13/08 ,  A61B5/08 ,  A61B5/024

    CPC classification number: G01S13/08 ,  A61B5/024 ,  A61B5/0816 ,  G01S7/415 ,  G01S13/34 ,  G01S13/888

    Abstract: A wireless detection device is provided, comprising a voltage control oscillation unit, a transceiving unit, demodulation unit and processing unit. The voltage control oscillation unit generates different oscillation signals according to analog control voltages and corresponding injection signals. The transceiving unit outputs first wireless signals to a predetermined area according to the oscillation signals and receives second wireless signals generated by reflection of the first wireless signals to generate the injection signal. The demodulation unit demodulates the oscillation signals into first voltage signals. The processing unit subtracts the corresponding analog control voltages from the first voltage signals to generate second voltage signals, and when the variation of the second voltage signals exceeds a predetermined value on a target frequency in frequency domain, the processing unit calculates a real distance between an object and the transceiving unit.

    Abstract translation: 提供一种无线检测装置，包括电压控制振荡单元，收发单元，解调单元和处理单元。 电压控制振荡单元根据模拟控制电压和相应的注入信号产生不同的振荡信号。 收发单元根据振荡信号将第一无线信号输出到预定区域，并接收由第一无线信号的反射产生的第二无线信号以产生注入信号。 解调单元将振荡信号解调为第一电压信号。 处理单元从第一电压信号中减去对应的模拟控制电压以产生第二电压信号，并且当第二电压信号的变化在频域中的目标频率上超过预定值时，处理单元计算一个 对象和收发单元。

Patent Agency Ranking