公开(公告)号：US20210405145A1

公开(公告)日：2021-12-30

申请号：US17338971

申请日：2021-06-04

Applicant: Stichting IMEC Nederland

Inventor： Lichen Yao ,  Pepijn Boer ,  Jac Romme

IPC: G01S5/02 ,  H04B17/318

Abstract: A method of ranging between a first and a second radio signal transceiver comprises calculating a preliminary estimate of a value proportional to a one-way frequency domain channel response, for a frequency of a plurality of frequencies and for each of a first antenna combination and a second antenna combination of a plurality of antenna combinations; calculating a comparison value for the preliminary estimate, for the frequency and for each of the first antenna combination and the second antenna combination; determining, for the frequency and the first antenna combination, a corrected estimate of the value proportional to the one-way frequency domain channel response based on the preliminary estimate and the comparison value, for the first antenna combination and the second antenna combination; and performing a ranging calculation between the first and the second radio signal transceiver based on a plurality of such corrected estimates.

公开(公告)号：US11184048B2

公开(公告)日：2021-11-23

申请号：US16899976

申请日：2020-06-12

Applicant: Stichting IMEC Nederland

Inventor： Jac Romme

IPC: H04B1/7156 ,  G01S13/84

Abstract: A measuring system includes a first measuring device and a second measuring device. The measuring system is configured to, between the first measuring device and the second measuring device, determine a first phase shift at a first frequency, determine a second phase shift at a second frequency, and determine a third phase shift at a third frequency. The first measuring device includes a phase difference calculator configured to calculate a first phase difference between the first phase shift and the second phase shift, and a second phase difference between the second phase shift and the third phase shift. The first measuring device also includes a range/velocity calculator configured to determine a first biased distance estimate from the first phase difference, a second biased distance estimate from the second phase difference, and an unbiased distance and/or velocity from the first biased distance estimate and the second biased distance estimate.

公开(公告)号：US11088664B2

公开(公告)日：2021-08-10

申请号：US16714128

申请日：2019-12-13

Applicant: Stichting IMEC Nederland

Inventor： Wilfried Zomagboguelou ,  Paul Mateman ,  Yao-Hong Liu

IPC: H03F3/72 ,  H03F3/24 ,  G06F7/58

Abstract: A signal generator is configured to generate a signal with an amplitude sweep, the signal generator having circuitry comprising: a set of control components, each control component of the set being arranged to be switchably activated in parallel in the circuitry such that an amplitude of the signal has an intrinsic dependence on the number of the control components activated; a shift register controllable by a clock line and comprising a number of bits, each bit of the number of bits controlling activation of a respective control component of the set of control components such that the control components are arranged to be activated or de-activated in a pre-determined order by shifting activation or de-activation bits into the shift register, wherein the shifting is paced by the clock line; and a clock signal generator configured to output a clock signal with a time modulation on the clock line.

公开(公告)号：US10965249B2

公开(公告)日：2021-03-30

申请号：US15952848

申请日：2018-04-13

Applicant: Stichting IMEC Nederland

Inventor： Ming Ding

IPC: H03B5/30 ,  H03B5/36 ,  H03B5/06 ,  G06F1/10 ,  H03B5/04

Abstract: A crystal oscillator circuit comprises: a crystal oscillator; and an injection frequency generating circuit, the injection frequency generating circuit being configured to sense a signal of the crystal oscillator and amplify the sensed signal, the injection frequency generating circuit being further configured to inject the amplified signal to the crystal oscillator; wherein the crystal oscillator circuit is configured such that the crystal oscillator receives the amplified signal during an initial start-up period of the crystal oscillator and stops receiving the amplified signal at an end of the initial start-up period.

公开(公告)号：US10948444B2

公开(公告)日：2021-03-16

申请号：US16219179

申请日：2018-12-13

Applicant: Stichting IMEC Nederland

Inventor： Greja Brom-Verheyden ,  Marcel Zevenbergen ,  Martijn Goedbloed

IPC: G01N27/07 ,  G01N27/414 ,  G01N27/02 ,  G01R27/22

Abstract: The present disclosure relates to a sensor and a measuring system and a sensor network that incorporate one or more such sensors. An example sensor could be configured to measure a conductivity of a liquid. The sensor includes a first electrode and a second electrode, each electrode having a surface area, wherein the surface area of the electrodes determines a cell constant of the sensor (Kcell), and wherein at least one of the electrodes is provided with a switching means arranged so that the surface area of the respective electrode can be changed, thereby varying the cell constant (Kcell) of the sensor.

公开(公告)号：US10938393B2

公开(公告)日：2021-03-02

申请号：US16709604

申请日：2019-12-10

Applicant: Stichting IMEC Nederland

Inventor： Wilfried Zomagboguelou ,  Paul Mateman ,  Yao-Hong Liu

IPC: H03L7/04 ,  H03B5/12 ,  H03B5/24 ,  H03B23/00 ,  G01S13/34 ,  H03C3/00

Abstract: An oscillator is configured to generate a signal with a frequency sweep, the oscillator having circuitry comprising a set of capacitors, each capacitor of the set of capacitors being switchably connectable in parallel in the circuitry so that the frequency of the signal has an intrinsic dependence on the number of the capacitors connected, a shift register controllable by a clock line and comprising a number of bits, each bit of the number of bits controlling connection of a respective capacitor of the set of capacitors so that the capacitors are connectable or disconnectable in a pre-determined order by shifting, respectively, activation or de-activation bits into the shift register, wherein the shifting is paced by the clock line; and a clock signal generator configured to output a clock signal with a time modulation on the clock line.

公开(公告)号：US10895548B2

公开(公告)日：2021-01-19

申请号：US15133475

申请日：2016-04-20

Applicant: Stichting IMEC Nederland

Inventor： Marcel Zevenbergen ,  Geert Altena ,  Pawel Bembnowicz ,  Martijn Goedbloed

IPC: G01N27/30 ,  G01N27/413 ,  G01N27/416

Abstract: Systems and methods described herein include a reference electrode for being immersed in a bulk solution. The reference electrode comprises a reservoir having reservoir walls defining a reservoir volume filled with an electrolyte; an electrode in the reservoir, in contact with the electrolyte. The reservoir of the reference electrode is closed except for the presence of at least one pore in at least one of the reservoir walls, the at least one pore being filled with electrolyte and being adapted for allowing ionic contact between the electrolyte in the reservoir and the bulk solution into which the reference electrode is to be immersed.

公开(公告)号：US10819278B2

公开(公告)日：2020-10-27

申请号：US16527799

申请日：2019-07-31

Applicant: Stichting IMEC Nederland

Inventor： Paul Mateman ,  Cui Zhou

IPC: H03B5/12 ,  H03B5/18 ,  H03K3/354

Abstract: A differential Colpitts oscillator circuit is described which has center-tapped inductors which are cross-coupled with gates of second transistors of first and second transistor pairs which can reduce the minimum power supply voltage and the bias voltage for the circuit. In addition, a capacitive ladder can be implemented which also has the potential benefit of increased tuning range.

公开(公告)号：US10481864B2

公开(公告)日：2019-11-19

申请号：US15717854

申请日：2017-09-27

Applicant: Stichting IMEC Nederland

Inventor： Vojkan Mihajlovic ,  Stefano Stanzione ,  Ulf Grossekathoefer

IPC: G10L25/00 ,  G06F3/16 ,  G10L25/18 ,  G10L25/63 ,  G10L25/90 ,  H04N5/232 ,  A61B5/00 ,  A61B5/0476 ,  A61B5/0488 ,  A61B5/053 ,  A61B5/16 ,  H04N5/77

Abstract: The present disclosure relates to a method for emotion-triggered capturing of audio and/or image data by an audio and/or image capturing device. The method includes receiving and analyzing a time-sequential set of data including first physiological data representing a first physiological parameter corresponding to a first person, a second physiological data representing a second physiological parameter corresponding to a second person, and voice audio data including a voice of at least one of the first and the second person, to determine whether a simultaneous change of emotional state of a first person and a second person occurs and transmitting a trigger signal to the capturing device. The present disclosure also relates to a corresponding apparatus and a system comprising the apparatus.

公开(公告)号：US10236835B2

公开(公告)日：2019-03-19

申请号：US15633924

申请日：2017-06-27

Applicant: Stichting IMEC Nederland

Inventor： Jac Romme

IPC: H03F3/217 ,  H03F3/00 ,  H03F3/19 ,  H03F3/21 ,  H03F7/04 ,  H04B1/04 ,  H03F3/189 ,  H03F3/24 ,  H03M1/80

Abstract: A method for ramping a switched capacitor power amplifier is disclosed, where the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, and where a number of the capacitors in the capacitor bank are activated. The method comprises changing the number of capacitors in the capacitor bank that are activated, maintaining the changed number of activated capacitors in the capacitor bank for a period of time, and repeating the changing and maintaining, where a length of the period of time is varied between at least two repetitions of the maintaining.