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公开(公告)号：US20230055562A1
公开(公告)日：2023-02-23
申请号：US17404930
申请日：2021-08-17
Applicant: Apple Inc.
Inventor： Damir Hamidovic , Harald Pretl , Peter Leopold Preyler
Abstract: Multiphase signal generation circuitry receives input signals that are out-of-phase with one another by a quadrature delay (e.g., 90°), and generates output signals that are out-of-phase with one another by half of the quadrature delay. A first input signal may be provided to a first delay circuitry, which is then input to a first phase interpolator. The first delay circuitry is also input to second delay circuitry, which also generates an output that is input to the first phase interpolator. The first phase interpolator outputs a first output signal. The second delay circuitry is input to third delay circuitry, which in turn is input to a second phase interpolator with a second input signal that is out-of-phase with the first input signal by the quadrature delay. The second phase interpolator outputs a second output signal that is out-of-phase with the first output signal by the half of the quadrature delay.
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公开(公告)号：US20230011044A1
公开(公告)日：2023-01-12
申请号：US17947813
申请日：2022-09-19
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Harald Pretl , Rastislav Vazny
Abstract: Embodiments disclosed herein relate to improving an available bandwidth for a transceiver of an electronic device and to reducing a footprint of an associated integrated circuit of the electronic device. To do so, an isolation circuit is disposed between a transmit circuit and a receive circuit. The isolation circuit has first and second signal paths. A first portion of the signal propagates along the first signal path and a second portion of the signal propagates along the second signal path. A non-reciprocal phase shifter is disposed on the first signal path to shift a phase of the first portion to match a phase of the second portion and improve isolation between the transmit circuit and the receive circuit. The phase-shifted first portion may be combined with the second portion to reduce or substantially eliminate an insertion loss caused by the isolation circuit.
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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：US20220094514A1
公开(公告)日：2022-03-24
申请号：US17031440
申请日：2020-09-24
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Harald Pretl , Rastislav Vazny
Abstract: Embodiments disclosed herein relate to improving an available bandwidth for a transceiver of an electronic device and to reducing a footprint of an associated integrated circuit of the electronic device. To do so, an isolation circuit is disposed between a transmit circuit and a receive circuit. The isolation circuit has first and second signal paths. A first portion of the signal propagates along the first signal path and a second portion of the signal propagates along the second signal path. A non-reciprocal phase shifter is disposed on the first signal path to shift a phase of the first portion to match a phase of the second portion and improve isolation between the transmit circuit and the receive circuit. The phase-shifted first portion may be combined with the second portion to reduce or substantially eliminate an insertion loss caused by the isolation circuit.
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25.发明授权公开(公告)号：US11258506B2
公开(公告)日：2022-02-22
申请号：US16761441
申请日：2018-03-29
Applicant: Apple Inc.
Inventor： Harald Pretl , Werner Schelmbauer , Josef Holzleitner
IPC: H04L5/00 , H04B7/08 , H04B1/00 , H04B7/0413
Abstract: A method and apparatus for receiving and processing multiple carriers with multiple antennas. The device includes a plurality of antennas for receiving signals over a plurality of carriers, and a plurality of receive chains connected to each antenna for processing a signal received on each antenna. The signal received on each antenna is split into multiple receive chains for receive processing. The antennas are grouped into a plurality of sub-groups and a signal on a first carrier is received on a first sub-group of antennas and a signal on a second carrier is received on a second sub-group of antennas. A signal on a third carrier may be received on all antennas. Multiple-input multiple-output (MIMO) on the first and second carriers may be implemented using the first and second sub-group of antennas, respectively, and MIMO on the third carrier may be implemented using all antennas.
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Patent Agency Ranking
公开(公告)号：US12244546B2
公开(公告)日：2025-03-04
申请号：US17947813
申请日：2022-09-19
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Harald Pretl , Rastislav Vazny
Abstract: Embodiments disclosed herein relate to improving an available bandwidth for a transceiver of an electronic device and to reducing a footprint of an associated integrated circuit of the electronic device. To do so, an isolation circuit is disposed between a transmit circuit and a receive circuit. The isolation circuit has first and second signal paths. A first portion of the signal propagates along the first signal path and a second portion of the signal propagates along the second signal path. A non-reciprocal phase shifter is disposed on the first signal path to shift a phase of the first portion to match a phase of the second portion and improve isolation between the transmit circuit and the receive circuit. The phase-shifted first portion may be combined with the second portion to reduce or substantially eliminate an insertion loss caused by the isolation circuit.
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公开(公告)号：US20240322782A1
公开(公告)日：2024-09-26
申请号：US18680493
申请日：2024-05-31
Applicant: Apple Inc.
Inventor： Björn Lenhart , Joonhoi Hur , Harald Pretl , Rastislav Vazny
CPC classification number: H03H7/40 , G06N20/00 , H04B1/0458 , H04B17/104 , H04B17/12
Abstract: This disclosure provides techniques for impedance matching. A radio frequency (RF) device includes a power detector to determine a transmitter leakage and a post-processing unit to determine a receiver leakage, and determines if isolation is acceptable based on the leakages. The RF device may include a device for measuring antenna impedance. Otherwise, the RF device may select multiple tuner settings (e.g., capacitor values) for test signals to be transmitted and received at a target frequency, determine multiple sets of leakage values, determine multiple reflection coefficients based on the multiple sets of leakage values, and determine an estimated antenna impedance at the target frequency based on the reflection coefficients. The RF device then determines impedance tuner settings based on the measured or estimated antenna impedance. Alternatively, the RF device determines impedance tuner settings using an inverse machine-learning model based on a determined matching impedance.
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公开(公告)号：US12057821B2
公开(公告)日：2024-08-06
申请号：US17211391
申请日：2021-03-24
Applicant: Apple Inc.
Inventor： Ehrentraud Hager , Harald Pretl
Abstract: An integrated circuit may include a resonator formed from FinFET devices. The resonator may include drive cells of alternating polarities and sense cells interposed between the drive cells. Each of the drive cells may include at least two drive transistors having fins coupled to a drive terminal. Each sense cell may include two sense transistors having one fin coupled to a sense terminal and another fin coupled to ground. Adjacent drive and sense cells may be separated by an intervening region that can accommodate a number of fins. Configured in this way, the resonator can exhibit a high quality factor, low phase noise, and can operate at a frequency that is less than the characteristic resonant frequency as defined by the fin pitch of the drive and sense transistors.
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公开(公告)号：US12013455B2
公开(公告)日：2024-06-18
申请号：US17200311
申请日：2021-03-12
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Bernhard Sogl , Jochen Schrattenecker , Andreas Menkhoff , Bin Xiao , Lucas Calderin , Andre Hanke , Harald Pretl , Rastislav Vazny
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.
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公开(公告)号：US20240097639A1
公开(公告)日：2024-03-21
申请号：US17945826
申请日：2022-09-15
Applicant: Apple Inc.
Inventor： Christof Pfannenmüller , Joonhoi Hur , Dominic Koehler , Harald Pretl , Rastislav Vazny
Abstract: A differential double balanced duplexer (dDBD) includes a transmitter and a first balun are coupled to a first impedance tuner that produces a first impedance that blocks received signals at a first frequency range from travelling across the first balun and into the transmitter, and a second impedance that passes transmitted signals at a second frequency range to travel across the first balun to the antenna. The dDBD also includes a receiver and a second balun coupled to a second impedance tuner that produces a first impedance that allows the received signals at the first frequency range to travel across the second balun and into the receiver, and a second impedance that blocks the transmitted signals at the second frequency range from travelling across the second balun and into the receiver. As such, the dDBD allows for increased isolation and decreased insertion loss.
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