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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
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：US11632224B2
公开(公告)日：2023-04-18
申请号：US17832171
申请日：2022-06-03
Applicant: Apple Inc.
Inventor： Nedim Muharemovic , Joonhoi Hur , Rastislav Vazny
Abstract: Systems and method are described for improving electrical isolation between a transmission signal and receiver circuitry of a transceiver communicating over one or more wireless networks via one or more shared antennas. The transceiver may include isolation circuitry to facilitate isolation of the transmission signal from the receiver circuitry. However, a leakage current of the transmission signal and noise signals may appear at the receiver circuitry. Presence of the leakage current or the noise signals in the receiver circuitry may cause interference with the reception signal. As such, the isolation circuitry may benefit from additional isolation between the transmission signal and the receiver circuitry to reduce an effect of the leakage current and the noise signals on the reception signal.
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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
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：US20230012540A1
公开(公告)日：2023-01-19
申请号：US17932665
申请日：2022-09-15
Applicant: Apple Inc.
Inventor： Oliver Georg Dorn , Björn Lenhart , Joonhoi Hur , Rastislav Vazny
IPC: H04L27/26
Abstract: Embodiments disclosed herein relate to reducing or substantially eliminating an insertion loss caused by isolating a transmit circuit from a receive circuit of an electronic device. To do so, an isolation circuit may be disposed between the transmit circuit and the receive circuit. The isolation circuit may have a first signal path and a second signal path. A first portion of the signal may propagate along the first signal path and a second portion of the signal may propagate along the second signal path. A phase shifter may be disposed on the first signal path to shift a phase of the first portion to match a phase of the second portion. 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：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
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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Patent Agency Ranking
公开(公告)号：US20220303107A1
公开(公告)日：2022-09-22
申请号：US17832171
申请日：2022-06-03
Applicant: Apple Inc.
Inventor： Nedim Muharemovic , Joonhoi Hur , Rastislav Vazny
Abstract: Systems and method are described for improving electrical isolation between a transmission signal and receiver circuitry of a transceiver communicating over one or more wireless networks via one or more shared antennas. The transceiver may include isolation circuitry to facilitate isolation of the transmission signal from the receiver circuitry. However, a leakage current of the transmission signal and noise signals may appear at the receiver circuitry. Presence of the leakage current or the noise signals in the receiver circuitry may cause interference with the reception signal. As such, the isolation circuitry may benefit from additional isolation between the transmission signal and the receiver circuitry to reduce an effect of the leakage current and the noise signals on the reception signal.
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公开(公告)号：US11424900B2
公开(公告)日：2022-08-23
申请号：US17065397
申请日：2020-10-07
Applicant: Apple Inc.
Inventor： Nedim Muharemovic , Joonhoi Hur , Rastislav Vazny
Abstract: Systems and method are described for improving electrical isolation between a transmission signal and receiver circuitry of a transceiver communicating over one or more wireless networks via one or more shared antennas. The transceiver may include isolation circuitry to facilitate isolation of the transmission signal from the receiver circuitry. However, a leakage current of the transmission signal and noise signals may appear at the receiver circuitry. Presence of the leakage current or the noise signals in the receiver circuitry may cause interference with the reception signal. As such, the isolation circuitry may benefit from additional isolation between the transmission signal and the receiver circuitry to reduce an effect of the leakage current and the noise signals on the reception signal.
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公开(公告)号：US20210091812A1
公开(公告)日：2021-03-25
申请号：US17084283
申请日：2020-10-29
Applicant: Apple Inc.
Inventor： Rastislav Vazny , Joonhoi Hur
IPC: H04B1/10 , H01Q1/52 , H04B7/0413 , H01Q21/00 , H04B7/08
Abstract: Systems and methods for extracting polarized sub-signals from a dual-polarized signal includes isolating the polarized sub-signals using one or more filters. When a single filter is used to derive a first sub-signal, analog interference cancellation may be used to derive the second sub-signal. When two filters are used, the first and second sub-signals may each be derived using a corresponding filter.
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公开(公告)号：US10812049B2
公开(公告)日：2020-10-20
申请号：US16123826
申请日：2018-09-06
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Rastislav Vazny , Ronald W. Dimpflmaier
Abstract: Systems, methods, and devices for reducing insertion loss and/or swapping transmitter (TX) and receiver (RX) frequencies in an electrical balance duplexer (EBD) used in a transceiver device for frequency division duplexing (FDD) applications are provided. Feed-forward receiver path from the antenna to a low noise amplifier (LNA) and a feed-forward path from the antenna to a power amplifier (PA) of the EBD may be used for reducing insertion loss of the RX and TX signals. In some embodiments, switches may be used to selectively alter operational modes for varied levels of isolation and/or swapping of TX and RX frequencies.
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公开(公告)号：US20200304168A1
公开(公告)日：2020-09-24
申请号：US16356855
申请日：2019-03-18
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Rastislav Vazny , Ronald William Dimpflmaier
IPC: H04B1/525 , H04B1/04 , H04L5/14 , H04B1/7107 , H04L5/00
Abstract: The representative embodiments discussed in the present disclosure relate to techniques in which isolation between transmission signals and received signals in a transceiver may be maintained during downlink carrier aggregation. More specifically, in some embodiments, the transceiver may be implemented to include an electrical balance duplexer that isolates a signal component of a signal transmitted via the transceiver from a receiver signal path of the transceiver. The transceiver may also include analog interference cancellation circuitry implemented to isolate a noise component of the signal transmitted via the transceiver from the receiver signal path (e.g., from one or more downlink receiver channels). As such, the transceiver may operate using inter-band, non-contiguous downlink carrier aggregation, intra-band, non-contiguous downlink carrier aggregation, intra-band, contiguous carrier aggregation, and/or the like.
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