公开(公告)号：US20240201355A1

公开(公告)日：2024-06-20

申请号：US18538623

申请日：2023-12-13

Applicant: Stichting IMEC Nederland

Inventor： Chris Marshall ,  Erwin Allebes ,  Minyoung Song ,  Elbert Betchthum

IPC: G01S11/08

CPC classification number: G01S11/08

Abstract: A method for generating an ultra-wideband signal is provided. The method comprises the steps of generating at least one ultra-wideband pulse envelope comprising a main pulse and a precursor pulse, the precursor pulse being shorter in length and lower in amplitude compared to the main pulse, and modulating a carrier signal in amplitude such that the envelope corresponds to the at least one ultra-wideband pulse envelope and such that the carrier signal within the main pulse is phase-shifted with respect to the carrier signal within the precursor pulse.

公开(公告)号：US20230268955A1

公开(公告)日：2023-08-24

申请号：US18160474

申请日：2023-01-27

Applicant: Stichting IMEC Nederland

Inventor： Yao-Hong Liu ,  Minyoung Song

IPC: H04B1/7176

CPC classification number: H04B1/7176

Abstract: A method of generating an impulse for impulse radio transmission signals and an impulse-radio ultra-wideband transmitter are provided. In one aspect, the method includes distributing input digital data according to time information data and amplitude information data along a first modulation path and a second modulation path, respectively. Pulse position modulation is performed based on the time information data along the first modulation path to define a timing position of the impulse. Pulse amplitude modulation is performed based on the amplitude information data along the second modulation path to define an envelope of the impulse. The input digital data can be distributed according to phase information data along a third modulation path, and phase shift keying modulation can be performed based on the phase information data along the third modulation path to define a phase of a carrier signal of the impulse.

公开(公告)号：US11184047B2

公开(公告)日：2021-11-23

申请号：US16911938

申请日：2020-06-25

Applicant: Stichting IMEC Nederland

Inventor： Minyoung Song ,  Yao-Hong Liu

IPC: H04B1/40 ,  H04B1/10 ,  H04L25/02

Abstract: Example embodiments relate to methods for adjusting an impedance of a tunable matching network, One embodiment includes a method for adjusting an impedance of a tunable matching network (TMN) connected between an antenna and a transceiver front-end. The TMN includes a receive path to provide signals from the antenna to a receiver during a receive (Rx) mode and a transmit path to provide signals from a transmitter to the antenna during a transmit (Tx) mode. The method includes tuning the TMN. The method also includes measuring values of an output DC-offset at the receiver while tuning the TMN. The output DC-offset is caused by a coupling between the transmitter and the receiver. Further, the method includes determining a maximum value of the output DC-offset from the measured output DC-offset values. Additionally, the method includes adjusting the impedance of the TMN by tuning the TMN to the output DC-offset maximum value.

公开(公告)号：US12021557B2

公开(公告)日：2024-06-25

申请号：US18160474

申请日：2023-01-27

Applicant: Stichting IMEC Nederland

Inventor： Yao-Hong Liu ,  Minyoung Song

IPC: H04B1/7163 ,  H04B1/7176

CPC classification number: H04B1/7176

Abstract: A method of generating an impulse for impulse radio transmission signals and an impulse-radio ultra-wideband transmitter are provided. In one aspect, the method includes distributing input digital data according to time information data and amplitude information data along a first modulation path and a second modulation path, respectively. Pulse position modulation is performed based on the time information data along the first modulation path to define a timing position of the impulse. Pulse amplitude modulation is performed based on the amplitude information data along the second modulation path to define an envelope of the impulse. The input digital data can be distributed according to phase information data along a third modulation path, and phase shift keying modulation can be performed based on the phase information data along the third modulation path to define a phase of a carrier signal of the impulse.

公开(公告)号：US20230194656A1

公开(公告)日：2023-06-22

申请号：US17933253

申请日：2022-09-19

Applicant: IMEC VZW ,  STICHTING IMEC NEDERLAND

Inventor： Minyoung Song ,  Peng Zhang ,  Barend Wilhelmus Marinus van Liempd

IPC: G01S7/285 ,  G01S7/03 ,  H03H11/34

CPC classification number: G01S7/285 ,  G01S7/036 ,  H03H11/344

Abstract: A radar transceiver is provided. The radar transceiver includes an electrical balance duplexer that is coupled to a transmission node of a transmission path, a reception node of a reception path, and an antenna node and that is configured to isolate the transmission path from the reception path. The electrical balance duplexer includes a hybrid transformer network and a non-tunable balancing impedance. The non-tunable balancing impedance is configured to provide a fixed impedance value that corresponds to an impedance value at the antenna node.

公开(公告)号：US20210036731A1

公开(公告)日：2021-02-04

申请号：US16911938

申请日：2020-06-25

Applicant: Stichting IMEC Nederland

Inventor： Minyoung Song ,  Yao-Hong Liu

IPC: H04B1/40 ,  H04L25/02

Abstract: Example embodiments relate to methods for adjusting an impedance of a tunable matching network, One embodiment includes a method for adjusting an impedance of a tunable matching network (TMN) connected between an antenna and a transceiver front-end. The TMN includes a receive path to provide signals from the antenna to a receiver during a receive (Rx) mode and a transmit path to provide signals from a transmitter to the antenna during a transmit (Tx) mode. The method includes tuning the TMN. The method also includes measuring values of an output DC-offset at the receiver while tuning the TMN. The output DC-offset is caused by a coupling between the transmitter and the receiver. Further, the method includes determining a maximum value of the output DC-offset from the measured output DC-offset values. Additionally, the method includes adjusting the impedance of the TMN by tuning the TMN to the output DC-offset maximum value.