公开(公告)号：US20240426976A1

公开(公告)日：2024-12-26

申请号：US18338213

申请日：2023-06-20

Applicant: Qualcomm Incorporated

Inventor： Roberto Rimini ,  Anant Gupta ,  Adrian Bortier Alabi ,  Ravi Teja Yarra

IPC: G01S7/35 ,  G01S7/00

Abstract: An apparatus for is disclosed for precoding radar receive signals. The apparatus includes a wireless transceiver configured to transmit a radar transmit signal using at least one antenna. The radar transmit signal is modulated in frequency across multiple cycles based on one or more frequency-modulation schemes. The wireless transceiver is also configured to receive at least two radar receive signals using at least two other antennas. The at least two radar receive signals include versions of the radar transmit signal that are reflected by at least one object. Each of the at least two radar receive signals is modulated in frequency across the multiple cycles based on the one or more frequency-modulation schemes of the radar transmit signal. The wireless transceiver is further configured to precode the at least two radar receive signals across the multiple cycles to generate precoded radar receive signals that are orthogonal to each other.

公开(公告)号：US20240073068A1

公开(公告)日：2024-02-29

申请号：US18348628

申请日：2023-07-07

Applicant: QUALCOMM Incorporated

Inventor： Sheng-Yuan Tu ,  Roberto Rimini ,  Anant Gupta ,  Ahmad Bassil Zoubi ,  Neevan Ramalingam

IPC: H04L27/01 ,  H04L25/03

CPC classification number: H04L27/01 ,  H04L25/03343 ,  H04L2025/03426

Abstract: An apparatus is disclosed that implements interference and/or clutter cancellation using cross-channel equalization. In example aspects, the apparatus includes a wireless transceiver configured to be connected to multiple feed ports. The wireless transceiver is also configured to transmit an electromagnetic signal using a first feed port of the multiple feed ports. A modulated spur is generated based on the transmission of the electromagnetic signal. The wireless transceiver is additionally configured to receive two versions of a receive signal respectively via two feed ports of the multiple feed ports. The receive signal comprises the modulated spur and a mutual-coupling component associated with the transmission of the electromagnetic signal. The wireless transceiver is further configured to generate a filtered signal by attenuating the mutual-coupling component and the modulated spur within one of the two versions of the receive signal using cross-channel equalization.

公开(公告)号：US10663572B2

公开(公告)日：2020-05-26

申请号：US16012193

申请日：2018-06-19

Applicant: QUALCOMM Incorporated

Inventor： Shahin Mehdizad Taleie ,  Chen Jiang ,  Dongwon Seo ,  Udara Fernando ,  Shrenik Patel ,  Roberto Rimini ,  Anant Gupta

IPC: H04B1/40 ,  G01S13/34 ,  G01S13/02 ,  H04L27/36 ,  H03M1/66 ,  H04L27/38

Abstract: Certain aspects of the present disclosure generally relate to a programmable multi-mode digital-to-analog converter (DAC) for generating a frequency-modulated signal. For example, certain aspects provide a circuit for sweeping a frequency of an output signal. The circuit generally includes a DAC having an input coupled to an input path of the circuit and an output coupled to an output path of the circuit, a first mixer selectively incorporated in the input path coupled to the input of the DAC, and a second mixer selectively incorporated in the output path coupled to the output of the DAC.

公开(公告)号：US20190353750A1

公开(公告)日：2019-11-21

申请号：US15984233

申请日：2018-05-18

Applicant: Qualcomm Incorporated

Inventor： Roberto Rimini ,  Anant Gupta

IPC: G01S7/02 ,  G01S13/08

Abstract: An apparatus is disclosed for proximity detection using adaptive mutual coupling cancellation. In an example aspect, the apparatus includes at least two antennas, a wireless transceiver connected to the at least two antennas, and a mutual coupling cancellation module. The at least two antennas include a first antenna and a second antenna, which are mutually coupled electromagnetically. The second antenna includes two feed ports. The wireless transceiver is configured to transmit a radar transmit signal via the first antenna and receive two versions of a radar receive signal respectively via the two feed ports of the second antenna. The wireless transceiver is also configured to adjust a transmission parameter based on a decoupled signal. The transmission parameter varies based on a range to the object. The mutual coupling cancellation module is configured to generate the decoupled signal based on the two versions of the radar receive signal.

公开(公告)号：US12248089B2

公开(公告)日：2025-03-11

申请号：US17649759

申请日：2022-02-02

Applicant: QUALCOMM Incorporated

Inventor： Ahmad Bassil Zoubi ,  Anant Gupta ,  Sheng-Yuan Tu ,  Roberto Rimini ,  Neevan Ramalingam

IPC: G01S7/35 ,  G01S13/34 ,  H04B1/12

Abstract: In some aspects, a radar device may receive a plurality of received signals comprising a plurality of reflected frequency modulated continuous wave radar signals and phase noise. The radar device may obtain a frequency-domain representation of the received signals comprising a plurality of frequency-domain spectrums. The radar device may determine a shaped noise component of the frequency-domain representation corresponding to a negative distance portion of the frequency-domain representation. The radar device may determine a shaped decision boundary for target detection based at least in part on the shaped noise component, wherein the shaped decision boundary corresponds to a positive distance portion of the frequency-domain representation. The radar device may detect a radar target based at least in part on the shaped decision boundary. The radar device may perform an action based at least in part on detecting the radar target. Numerous other aspects are described.