公开(公告)号：US20210096217A1

公开(公告)日：2021-04-01

申请号：US16583522

申请日：2019-09-26

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Chunshu Li ,  Sujeet Milind Patole ,  Utku Seckin

IPC: G01S7/42 ,  G01S13/30 ,  G01S13/12

Abstract: During operation, a first radar transmitter in an electronic device may provide, via a switch, a first set of electrical signals (such as pulses) during a first time interval to a transmission path, which may result in transmitting of the first wireless signals by an antenna. Then, a second radar transmitter may provide, via the switch, a second set of electrical signals (such as pulses) during a second time interval to the transmission path, which may result in transmitting of the second wireless signals by the antenna. Moreover, N radar receivers in the electronic device may receive first wireless-return signals corresponding to the first set of wireless signals and second wireless-return signals corresponding to the second set of wireless signals. These wireless-return signals may be combined to create a virtual array MIMO radar having an antenna aperture size of 2N.

公开(公告)号：US10928498B1

公开(公告)日：2021-02-23

申请号：US16134029

申请日：2018-09-18

Applicant: Apple Inc.

Inventor： Chunshu Li ,  Jouya Jadidian ,  Mikheil Tsiklauri ,  Vaneet Pathak

IPC: G01S13/42 ,  G01S13/87 ,  H04B17/10

Abstract: An electronic device includes M separate radar transmitters and N separate radar receivers co-located in the electronic device, where the M radar transmitters and the N radar receivers are arranged in a circular architecture providing 360° coverage in a horizontal plane. Moreover, the N radar receivers are synchronized, e.g., using a clock signal. During operation, subsets of the M radar transmitters sequentially transmit radar signals and, when a given subset of the M radar transmitters is transmitting, at least a subset of the N radar receivers performs radar measurements. Furthermore, at least the subset of the N radar receivers can perform the radar measurements using circular beamforming. Based at least in part on the radar measurements, the electronic device determines a location of an object in an environment around the electronic device, where the location includes a range and an angular position.

公开(公告)号：US11435467B2

公开(公告)日：2022-09-06

申请号：US16583564

申请日：2019-09-26

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Mohammad B. Vahid Far ,  Chunshu Li

IPC: G01S13/22 ,  G01S7/28 ,  H04B7/0413

Abstract: During operation, a transmitter in an electronic device may provide, to a transmission path, an electrical signal. This electrical signal may be divided by the power splitter into a first output electrical signal in a first output transmission path and a second output electrical signal in a second output transmission path, which may result in transmitting of the first wireless signal and the second wireless signal by antennas. Because the second output transmission path may include a delay element that provides a delay, the second wireless signal may be delayed relative to the first wireless signal. Moreover, N radar receivers in the electronic device may receive first wireless-return signals corresponding to the first wireless signal and second wireless-return signals corresponding to the second wireless signal. These wireless-return signals may be combined to create a virtual array MIMO radar having an antenna aperture size of 2N.

公开(公告)号：US20210096233A1

公开(公告)日：2021-04-01

申请号：US16583564

申请日：2019-09-26

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Mohammad B. Vahid Far ,  Chunshu Li

IPC: G01S13/22 ,  H04B7/0413 ,  G01S7/28

Abstract: During operation, a transmitter in an electronic device may provide, to a transmission path, an electrical signal. This electrical signal may be divided by the power splitter into a first output electrical signal in a first output transmission path and a second output electrical signal in a second output transmission path, which may result in transmitting of the first wireless signal and the second wireless signal by antennas. Because the second output transmission path may include a delay element that provides a delay, the second wireless signal may be delayed relative to the first wireless signal. Moreover, N radar receivers in the electronic device may receive first wireless-return signals corresponding to the first wireless signal and second wireless-return signals corresponding to the second wireless signal. These wireless-return signals may be combined to create a virtual array MIMO radar having an antenna aperture size of 2N.