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    Six-port self-injection-locked radar
    1.
    发明授权
    Six-port self-injection-locked radar 有权

    公开(公告)号：US11520007B2

    公开(公告)日：2022-12-06

    申请号：US16930391

    申请日：2020-07-16

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Fu-Kang Wang ,  Zhi-Rong Liu ,  Pin-Hsun Juan

    IPC: G01S13/536 ,  G01S13/88 ,  G01S7/40 ,  G01S7/285 ,  G01S13/04

    Abstract: A six-port self-injection-locked (SIL) radar includes an oscillation element, an antenna element, a six-port frequency demodulation element and a signal processing element. Because of a coupler and a phase shifter of the six-port frequency demodulation element, the signal processing element can extract vibration information of subject by using only two demodulated signals output from the six-port frequency demodulation element. As a result, the operation frequency of the six-port SIL radar is not limited by hardware architecture, and the hardware costs and the power consumption are also reduced.

    Frequency-converted frequency-modulated self-injection-locked radar
    3.
    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.

    SIX-PORT SELF-INJECTION-LOCKED RADAR
    6.
    发明申请
    SIX-PORT SELF-INJECTION-LOCKED RADAR 有权

    公开(公告)号：US20210356560A1

    公开(公告)日：2021-11-18

    申请号：US16930391

    申请日：2020-07-16

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Fu-Kang Wang ,  Zhi-Rong Liu ,  Pin-Hsun Juan

    IPC: G01S7/40 ,  G01S13/04 ,  G01S7/285

    Abstract: A six-port self-injection-locked (SIL) radar includes an oscillation element, an antenna element, a six-port frequency demodulation element and a signal processing element. Because of a coupler and a phase shifter of the six-port frequency demodulation element, the signal processing element can extract vibration information of subject by using only two demodulated signals output from the six-port frequency demodulation element. As a result, the operation frequency of the six-port SIL radar is not limited by hardware architecture, and the hardware costs and the power consumption are also reduced.

    Signal demodulation device having IQ mixer and demodulation method using the same
    7.
    发明授权
    Signal demodulation device having IQ mixer and demodulation method using the same 有权

    公开(公告)号：US11041939B2

    公开(公告)日：2021-06-22

    申请号：US16181434

    申请日：2018-11-06

    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY

    Inventor： Fu-Kang Wang ,  Tzyy-Sheng Horng ,  Pin-Hsun Juan

    IPC: G01S7/35 ,  G01S13/88 ,  G01S13/58

    Abstract: A signal demodulation device includes an IQ mixer, a differential element and a signal processor. The IQ mixer is configured to output a first mixed signal and a second mixed signal. The differential element is electrically connected to the IQ mixer for receiving the first and second mixed signals and configured to differentiate the first and second mixed signals and output a first derivative signal and a second derivative signal. The signal processor is electrically connected to the differential element for receiving the first and second derivative signals and configured to demodulate the first and second derivative signals and output a first demodulated signal.

    FREQUENCY-CONVERTED FREQUENCY-MODULATED SELF-INJECTION-LOCKED RADAR
    8.
    发明申请
    FREQUENCY-CONVERTED FREQUENCY-MODULATED SELF-INJECTION-LOCKED RADAR 有权

    公开(公告)号：US20220196819A1

    公开(公告)日：2022-06-23

    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

    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.

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