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公开(公告)号：US12052047B2
公开(公告)日：2024-07-30
申请号：US18319664
申请日：2023-05-18
Applicant: Apple Inc.
Inventor： Andreas Menkhoff , Andreas Boehme , Bernhard Sogl , Jochen Schrattenecker , Joonhoi Hur
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.
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公开(公告)号：US20220229155A1
公开(公告)日：2022-07-21
申请号：US17150974
申请日：2021-01-15
Applicant: Apple Inc.
Inventor： Jochen Schrattenecker , Bernhard Sogl , Andreas Menkhoff , Joonhoi Hur , Harald Pretl , Christian Mayer , Andreas Langer , Rastislav Vazny
IPC: G01S7/40
Abstract: An electronic device may include radar circuitry. Control circuitry may calibrate the radar circuitry using a multi-tone calibration signal. A first mixer may upconvert the calibration signal for transmission by a transmit antenna. A de-chirp mixer may mix the calibration signal output by the first mixer with the calibration signal as received by a receive antenna or loopback path to produce a baseband multi-tone calibration signal. The baseband signal will be offset from DC by the frequency gap. This may prevent DC noise or other system effects from interfering with the calibration signal. The control circuitry may sweep the first mixer over the radio frequencies of operation of the radar circuitry to estimate the power droop and phase shift of the radar circuitry based on baseband calibration signal. Distortion circuitry may distort transmit signals used in spatial ranging operations to invert the estimated power droop and phase shift.
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公开(公告)号：US10897733B2
公开(公告)日：2021-01-19
申请号：US16328741
申请日：2017-08-01
Applicant: Apple Inc.
Inventor： Zhibin Yu , Bernhard Sogl , Markus Dominik Mueck , Biljana Badic
Abstract: The present disclosure relates to a user equipment (200) for a wireless communication system. The user equipment comprises a transmitter (210) configured to generate a transmit signal (220), a transmitter feedback receiver (230) coupled to the transmitter and configured to measure a power of the transmit signal in a first mode of operation, and control circuitry (240) configured to select a second mode of operation of the transmitter feedback receiver, in which the transmitter feedback receiver (230) is configured to measure one or more neighboring inter-frequency or inter-RAT base stations.
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公开(公告)号：US20240333325A1
公开(公告)日：2024-10-03
申请号：US18743593
申请日：2024-06-14
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Jochen Schrattenecker , Bin Xiao , Andre Hanke , Harald Pretl , Rastislav Vazny , Bernhard Sogl , Andreas Menkhoff
CPC classification number: H04B1/1027 , H04B1/123 , H04B15/005
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.
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公开(公告)号：US20230417900A1
公开(公告)日：2023-12-28
申请号：US18456429
申请日：2023-08-25
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Andreas Menkhoff , Bernhard Sogl , Jochen Schrattenecker , Rastislav Vazny
Abstract: An electronic device may include a voltage standing wave ratio (VSWR) sensor disposed along a radio-frequency transmission line between a signal generator and an antenna. The VSWR sensor may gather VSWR measurements from radio-frequency signals transmitted by the signal generator over the transmission line. Control circuitry may identify a variation in the VSWR measurements over time and may compare the variation to a threshold value to determine whether an external object in the vicinity of the antenna is animate or inanimate. The control circuitry may reduce the maximum transmit power level of the antenna when the external object is animate and may maintain or increase the maximum transmit power level when the external object is inanimate. This may serve to maximize the wireless performance of the electronic device while also ensuring that the device complies with regulatory limits on radio-frequency energy exposure.
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Patent Agency Ranking
公开(公告)号：US20230327929A1
公开(公告)日：2023-10-12
申请号：US18167017
申请日：2023-02-09
Applicant: Apple Inc.
Inventor： Jochen Schrattenecker , Michael Hofstadler , Andreas Springer , Reinhard Feger , Andreas Stelzer , Harald Pretl , Bernhard Sogl , Andreas Menkhoff
IPC: H04L27/26 , G01S17/66 , G01S7/4865
CPC classification number: H04L27/2605 , G01S7/4865 , G01S17/66
Abstract: An electronic device may include wireless circuitry that conveys data with a base station according to a communication standard and that detects range to an external object using a first antenna that transmits a waveform compliant with the standard. The waveform may be a Sounding Reference Signal (SRS) waveform, a transmit data waveform, or another waveform. A second antenna may receive a reflected signal that includes the transmitted waveform. The communications circuitry may perform element-wise division on symbols of a selected subcarrier in the reflected signal using corresponding phases and magnitudes of a set of complex OFDM symbols used to generate the transmitted waveform. Peak detection may be performed to detect the range. Using standard-compliant transmit waveforms to also perform spatial ranging may allow the communications circuitry to avoid dedicated radar circuitry while also minimizing impact to the transfer of the data.
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公开(公告)号：US11782151B2
公开(公告)日：2023-10-10
申请号：US17332221
申请日：2021-05-27
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Andreas Menkhoff , Bernhard Sogl , Jochen Schrattenecker , Rastislav Vazny
Abstract: An electronic device may include a voltage standing wave ratio (VSWR) sensor disposed along a radio-frequency transmission line between a signal generator and an antenna. The VSWR sensor may gather VSWR measurements from radio-frequency signals transmitted by the signal generator over the transmission line. Control circuitry may identify a variation in the VSWR measurements over time and may compare the variation to a threshold value to determine whether an external object in the vicinity of the antenna is animate or inanimate. The control circuitry may reduce the maximum transmit power level of the antenna when the external object is animate and may maintain or increase the maximum transmit power level when the external object is inanimate. This may serve to maximize the wireless performance of the electronic device while also ensuring that the device complies with regulatory limits on radio-frequency energy exposure.
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公开(公告)号：US20250039805A1
公开(公告)日：2025-01-30
申请号：US18358516
申请日：2023-07-25
Applicant: Apple Inc.
Inventor： Franz J Eder , Carlo Tosetti , Josef Hagn , Andre Janssen , Abbas Komijani , Iliah Konstantinovsky , Roman Rainov , Amit Freiman , Amitoj Singh , Bernhard Sogl
Abstract: A user equipment (UE) device may communicate with a wireless base station (BS). Each antenna in a phased antenna array on the UE may receive a reference signal transmitted by the BS during the beam training interval. Transceiver circuitry may measure wireless performance metric data from the reference signal. While receiving the reference signal, control circuitry may selectively activate different individual antennas, may selectively activate different subsets of antennas, or may concurrently activate all of the antennas in the array. The control circuitry may identify, based on the wireless performance metric data, a first set of the antennas in the array to that are being blocked by an external object and a second set of antennas array that are not blocked. After the beam training interval, the transceiver may use the second set of antennas to convey wireless data with the BS while the first set of antennas are disabled.
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公开(公告)号：US20240411006A1
公开(公告)日：2024-12-12
申请号：US18814253
申请日：2024-08-23
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Andreas Menkhoff , Bernhard Sogl , Jochen Schrattenecker , Rastislav Vazny
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.
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公开(公告)号：US12047101B2
公开(公告)日：2024-07-23
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
CPC classification number: H04B1/1027 , H04B1/123 , H04B15/005
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.
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