公开(公告)号：US20240012125A1

公开(公告)日：2024-01-11

申请号：US18474140

申请日：2023-09-25

Applicant: Apple Inc.

Inventor： Joonhoi Hur ,  Andreas Menkhoff ,  Bernhard Sogl ,  Jochen Schrattenecker ,  Rastislav Vazny

IPC: G01S13/42 ,  H01Q3/34

CPC classification number: G01S13/426 ,  H01Q3/34

Abstract: An electronic device may include wireless circuitry having a set of two or more antennas coupled to voltage standing wave ratio (VSWR) sensors. The VSWR sensors may gather VSWR measurements from radio-frequency signals transmitted using the set of antennas. The antennas may be disposed on one or more substrates and/or may be formed from conductive portions of a housing. Control circuitry may process the VSWR measurements to identify the ranges between each of the antennas in the set of antennas and an external object. The control circuitry may process the ranges to identify an angular location of the external object with respect to the device. The control circuitry may adjust subsequent communications based, adjust the direction of a signal beam produced by a phased antenna array, identify a user input, or perform any other desired operations based on the angular location.

公开(公告)号：US20230291432A1

公开(公告)日：2023-09-14

申请号：US18319664

申请日：2023-05-18

Applicant: Apple Inc.

Inventor： Andreas Menkhoff ,  Andreas Boehme ,  Bernhard Sogl ,  Jochen Schrattenecker ,  Joonhoi Hur

IPC: H04B1/40 ,  H03K5/01

CPC classification number: H04B1/40 ,  H03K5/01 ,  H03K2005/00013

Abstract: An electronic device may include wireless circuitry. The wireless circuitry may include a quadratic phase generator for outputting a perfectly interpolated constant amplitude zero autocorrelation (CAZAC) sequence for a transmit path. The quadratic phase generator may include a numerically controlled oscillator, a switch controlled based on a value output from the numerically controlled oscillator, a first integrator stage, and a second integrator stage connected in series with the first integrator stage. The numerically controlled oscillator may receive as inputs a chirp count and a word length. The switch may be configured to switchably feed one of two input values that are a function of the chirp count and the word length to the first integrator stage. The quadratic phase generator may output full-bandwidth chirps or reduced-bandwidth chirps. Bandwidth reduction can be achieved by scaling the two input values of the switches.

公开(公告)号：US20230102526A1

公开(公告)日：2023-03-30

申请号：US17716724

申请日：2022-04-08

Applicant: Apple Inc.

Inventor： Joonhoi Hur ,  Jochen Schrattenecker ,  Bin Xiao ,  Andre Hanke ,  Harald Pretl ,  Rastislav Vazny ,  Bernhard Sogl ,  Andreas Menkhoff

IPC: H04B1/10 ,  H04B15/00 ,  H04B1/12

Abstract: An electronic device may include wireless circuitry with a transmit antenna that transmits signals and a receive antenna that receives reflected signals. The wireless circuitry may detect a range between the device and an external object based on the transmitted signals and the reflected signals. When the range exceeds a first threshold, the wireless circuitry may use the transmitted signals and received signals to record background noise. When the range is less than a second threshold value, the wireless circuitry may detect the range based on the reflected signals and the recorded background noise. This may allow the range to be accurately measured within an ultra-short range domain even when the device is placed in different device cases, placed on different surfaces, etc.

公开(公告)号：US20220413094A1

公开(公告)日：2022-12-29

申请号：US17899360

申请日：2022-08-30

Applicant: Apple Inc.

Inventor： Joonhoi Hur ,  Bernhard Sogl ,  Jochen Schrattenecker ,  Andreas Menkhoff ,  Bin Xiao ,  Lucas Calderin ,  Andre Hanke ,  Harald Pretl ,  Rastislav Vazny

IPC: G01S7/41 ,  G01S7/00 ,  G01S7/03

Abstract: An electronic device may include a processor and wireless circuitry with transmit and receive antennas. Radar circuitry may use the transmit and receive antennas to perform spatial ranging on external objects farther than a threshold distance (e.g., 1-2 cm) from the transmit antenna. The wireless circuitry may include a voltage standing wave ration (VSWR) sensor coupled to the transmit antenna to detect the presence of objects within the threshold distance from the transmit antenna. This may serve to cover a blind spot for the radar circuitry near to the transmit antenna. The VSWR sensor may gather background VSWR measurements when other wireless performance metric data for the wireless circuitry is within a predetermined range of satisfactory values. The background VSWR measurements may be subtracted from real time VSWR measurements to perform accurate and robust ultra-short range object detection near to the transmit antenna.