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    Radar Transceiver
    31.
    发明申请
    Radar Transceiver 审中-公开

    公开(公告)号：US20200264271A1

    公开(公告)日：2020-08-20

    申请号：US16789757

    申请日：2020-02-13

    Applicant: Stichting IMEC Nederland

    Inventor： Yao-Hong Liu ,  Marco Mercuri

    IPC: G01S7/03 ,  G01S7/34 ,  G01S13/12 ,  G01S13/58

    Abstract: Example embodiments relate to radar transceivers. One embodiment includes a radar transceiver. The radar transceiver includes a chirp generator for generating a chirp having an initial frequency and a final frequency. The radar transceiver also includes a controllable variable gain amplifier having an input connected to an output of the chirp generator. Further, the radar transceiver includes a control unit connected to a control input on the chirp generator and to a control input on the controllable variable gain amplifier. The control unit is adapted to output a first control signal to the chirp generator such that the chirp generator starts generating the chirp. The control unit is also adapted to output a second control signal to the controllable variable gain amplifier such that the controllable variable gain amplifier starts increasing an amplification in the controllable variable gain amplifier from a first amplification level to a second amplification level.

    MEASUREMENT UNIT FOR MEASURING A BIO-IMPEDANCE
    32.
    发明申请
    MEASUREMENT UNIT FOR MEASURING A BIO-IMPEDANCE 审中-公开

    公开(公告)号：US20200253500A1

    公开(公告)日：2020-08-13

    申请号：US16784235

    申请日：2020-02-06

    Applicant: IMEC VZW ,  STICHTING IMEC NEDERLAND

    Inventor： Hyunsoo HA ,  Nick VAN HELLEPUTTE ,  Seokho YUN ,  IIhwan KIM ,  Hyung Jun Kim ,  Chung Kun CHO

    IPC: A61B5/053 ,  A61B5/08 ,  A61B5/0245 ,  A61B5/00

    Abstract: A measurement unit for measuring a bio-impedance of a body, the measurement unit comprising a current generator circuit, a readout circuit, and a baseline cancellation current circuit, wherein the current generator circuit is configured to amplify a reference current to form a measurement current to be driven through a body to generate a measurement voltage representing the bio-impedance; wherein the readout circuit comprises a Instrumentation amplifier (IA) which has a transconductance stage and a transimpedance stage, wherein the IA is configured to: produce a first current in the transconductance stage, the first current being proportional to the measurement voltage, receive a second current from the baseline cancellation current circuit, produce an output voltage in the transimpedance stage, the output voltage being proportional to a difference between the first current and the second current and representative of the measured bio-impedance; wherein the baseline cancellation current circuit is configured to amplify the reference current by a factor to form the second current and deliver it to the IA, wherein the factor is such that that the absolute value of the difference between the first and the second current is below a threshold such that a baseline of the first current is cancelled by the second current.

    Oscillator Circuit
    33.
    发明申请
    Oscillator Circuit 审中-公开

    公开(公告)号：US20200044603A1

    公开(公告)日：2020-02-06

    申请号：US16527471

    申请日：2019-07-31

    Applicant: Stichting IMEC Nederland

    Inventor： Cui Zhou ,  Paul Mateman

    IPC: H03B5/12

    Abstract: A differential Colpitts oscillator circuit is described which provides a larger tuning range, has better phase noise and uses less power than conventional differential Colpitts oscillator circuits. The circuit is characterized by a capacitive ladder in which only variable capacitor is used for tuning the circuit. In some embodiments, a variable capacitor can be used for fine tuning.

    LATCHED COMPARATOR AND ANALOG-TO-DIGITAL CONVERTER MAKING USE THEREOF
    34.
    发明申请
    LATCHED COMPARATOR AND ANALOG-TO-DIGITAL CONVERTER MAKING USE THEREOF 审中-公开

    公开(公告)号：US20200021304A1

    公开(公告)日：2020-01-16

    申请号：US16507875

    申请日：2019-07-10

    Applicant: STICHTING IMEC Nederland

    Inventor： Roland Van WEGBERG

    IPC: H03M1/46 ,  H03M1/06 ,  H03F3/45

    Abstract: A latched comparator comprises a pre-amplifier stage with a positive input (Vin,p), a negative input (Vin,n); and a differential output (ΔVout) comprising a first output (Vout,1) and a second output (Vout,2), the pre-amplifier stage comprising a first cascode pair, comprising a first amplifying transistor (MN2) and a first cascode transistor (MN4) connected at a first cascode node, the first amplifying transistor (MN2) being controlled by the positive input (Vin,p) and the first cascode transistor (MN4) being connected, opposite to the first cascode node, to the first output (Vout,1); a second cascode pair, comprising a second amplifying transistor (MN3) and a second cascode transistor (MN5) connected at a second cascode node, the second amplifying transistor (MN3) being controlled by the negative input (Vin,n) and the second cascode transistor (MN5) being connected, opposite to the second cascode node, to the second output (Vout,2); a first gain-boosting transistor (MN6) connected between the first output (Vout,1) and the first cascode node; and a second gain-boosting transistor (MN7) connected between the second output (Vout,2) and the second cascode node, wherein the first gain-boosting transistor (MN6) and the second gain-boosting transistor (MN7) are cross-coupled, so that the first gain-boosting transistor (MN6) is controlled by the second output (Vout,2) and the second gain-boosting transistor (MN7) is controlled by the first output (Vout,2).

    System, Device and Method for Eye Activity Monitoring
    36.
    发明申请
    System, Device and Method for Eye Activity Monitoring 审中-公开

    公开(公告)号：US20190320891A1

    公开(公告)日：2019-10-24

    申请号：US16387950

    申请日：2019-04-18

    Applicant: Stichting IMEC Nederland

    Inventor： Alessio Meroni ,  Paruthi Pradhapan ,  Patrick van der Heijden ,  Navid Shahriari

    IPC: A61B3/113 ,  G06F3/01 ,  A61B5/0496 ,  A61B5/00

    Abstract: An electronic system, device and method for monitoring eye activity of a subject is provided for monitoring eye activity of a subject using electrooculogram (EOG) biosignals. The electronic system for monitoring eye activity of a subject includes: a plurality of EOG electrodes; electrode circuitry configured for measuring an adapt EOG signals received from the plurality of electrodes; and a data processing unit configured for performing EOG signal processing and eye activity determination; wherein and the data processing unit is configured for performing eye activity determination based on at least a first diagonal eye biosignal vector derived from the biosignals measured between at least a first electrode pair that, in operation, is located on a first diagonal plane around the subject's eye

    Electronic System and Method for Bioimpedance Signal Acquisition
    37.
    发明申请
    Electronic System and Method for Bioimpedance Signal Acquisition 审中-公开

    公开(公告)号：US20190175063A1

    公开(公告)日：2019-06-13

    申请号：US16216363

    申请日：2018-12-11

    Applicant: Stichting IMEC Nederland

    Inventor： Willemijn Groenendaal ,  Seulki Lee ,  Ruben De Francisco Martin

    IPC: A61B5/08 ,  A61B5/11 ,  A61B5/04

    Abstract: An electronic system for bioimpedance signal acquisition, comprises: a current signal injection module configured for generating a current signal to be applied to a subject; a bioimpedance signal measurement module configured for measuring a bioimpedance signal based on a voltage generated by the current signal; a data quality detection module configured for detecting an AC or a DC level of the measured bioimpedance signal and detecting whether the AC or DC level is within or outside an AC reference value range and a DC reference value range, respectively; and a signal adaptation module configured for modifying at least one parameter of the current signal injection module or the bioimpedance signal measurement module based on said detection of the AC or DC level in relation to the AC reference value range and the DC reference value range, respectively.

    VARIABLE DELAY CIRCUIT
    38.
    发明申请
    VARIABLE DELAY CIRCUIT 审中-公开

    公开(公告)号：US20190158080A1

    公开(公告)日：2019-05-23

    申请号：US16194150

    申请日：2018-11-16

    Applicant: ROHM CO., LTD. ,  Stichting IMEC Nederland

    Inventor： Takashi Kuramochi ,  Yao Hong Liu

    IPC: H03K5/131 ,  H03M1/82 ,  H03L7/085 ,  H03L7/197

    CPC classification number: H03K5/131 ,  H03K5/153 ,  H03K2005/00058 ,  H03L7/085 ,  H03L7/1974 ,  H03M1/82

    Abstract: A variable delay circuit, which includes a digital-to-time converter (DTC) circuit and a controller, is disclosed. The DTC circuit includes a plurality of capacitors and a plurality of MOS switches that are turned on and off according to a control code. The DTC circuit receives an input pulse, applies a delay corresponding to the control code to the edge to be delayed, and outputs a delay pulse. The controller supplies a valid code indicating a delay amount as a control code during a period beginning from a predetermined time TCONST before the edge (positive edge) to be delayed of an input pulse REF up to the edge to be delayed. Further, the controller supplies, as the control code, a dummy code for turning on all of the plurality of MOS switches inside the DTC circuit immediately before the period.

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