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公开(公告)号：US20220109552A1
公开(公告)日：2022-04-07
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：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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公开(公告)号：US10715204B2
公开(公告)日：2020-07-14
申请号：US16145857
申请日：2018-09-28
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Rastislav Vazny , Ronald W. Dimpflmaier
Abstract: Systems, methods, and devices for operating in either frequency division duplexing (FDD) or time division duplexing (TDD) for wireless communications using the same electrical balance duplexer (EBD) circuitry in a transceiver device are provided. A series of switches may selectively couple components of the EBD, such as a low noise amplifier (LNA), a power amplifier (PA), and balancing impedance, to ground based on selected operation mode (e.g., FDD or TDD) while reducing insertion loss of the receiver (RX) and transmitter (TX) signals. Tuned matching network blocks for the LNA and PA may be used in addition to the series of switches to provide impedance matching for additional reduction of insertion loss.
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公开(公告)号：US20200083867A1
公开(公告)日：2020-03-12
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：US10530615B1
公开(公告)日：2020-01-07
申请号：US16297235
申请日：2019-03-08
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Rastislav Vazny , Ronald William Dimpflmaier
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 across a range of transceiver operating conditions, such as across range of output powers of a power amplifier of the transceiver. More specifically, an electrical balance duplexer may be implemented to include an adaptive power equalizer and a power equalizer control such that the attenuation of the electrical balance duplexer may be adjusted based on the transceiver operating conditions. For instance, a method may be employed to determine the output power of the power amplifier and to adjust the attenuation of the adaptive power equalizer based in part on the output power to maintain isolation between the transmission signals and the received signals.
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Patent Agency Ranking
公开(公告)号：US20190097671A1
公开(公告)日：2019-03-28
申请号：US15715739
申请日：2017-09-26
Applicant: Apple Inc.
Inventor： Ronald W. Dimpflmaier , Rastislav Vazny , Lydi R. Smaini
Abstract: The present disclosure relates to radiofrequency (RF) communications systems that may operate efficiently over a broad range of signal output levels. Electronic devices may employ amplification circuitry in the communication RF systems to provide output signal power. For example, amplification provided by external power amplifiers disposed in front-end modules may be more efficient at a higher range of output signal power, but may be inefficient at a lower range of output signal power. The disclosure relates to architectures for RF communication systems having transceivers and front-end modules that may provide power-efficient over broad ranges. Front-end modules may, for example, be managed to disable and/or enable external power amplifiers based of the output signal power. Transceivers may, for example, include internal power amplifier which may provide amplification for low output signals, and may operate as a driver to the external power amplifier of the front-end module for high output signals. Methods for managing the circuitry are also discussed.
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公开(公告)号：US20250150249A1
公开(公告)日：2025-05-08
申请号：US19015313
申请日：2025-01-09
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：US12143145B2
公开(公告)日：2024-11-12
申请号：US17939657
申请日：2022-09-07
Applicant: Apple Inc.
Inventor： Christof Pfannenmüller , Dominic Koehler , Julian W Zuber , Oliver Georg Dorn , Bjoern Lenhart , Harald Pretl , Rastislav Vazny , Christian F Tanzer
Abstract: Systems and methods combine a test signal with a wanted (downlink or uplink) signal at an input of a duplexer of a communication device, and receive the test signal at an output of the duplexer. The test signal may include a radio frequency signal having less power than the wanted signal to avoid interference, or a digital signal that is added to or extracted from the wanted signal when the wanted signal does not have a radio frequency. A processor of the communication device causes the duplexer to operate in a tuning state (e.g., to transmit signals having a transmission frequency and receive signals having a receive frequency). The measurement system determines a difference or ratio in power between the test signal at the duplexer output and the duplexer input, and adjusts the tuning state based on the difference or ratio (e.g., to decrease or minimize the difference or ratio).
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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：US12108496B2
公开(公告)日：2024-10-01
申请号：US17723071
申请日：2022-04-18
Applicant: Apple Inc.
Inventor： Rastislav Vazny , Matthias Sauer , Ronald W. Dimpflmaier
CPC classification number: H04W88/085 , H04B1/40 , H04M1/003 , H04W40/06
Abstract: A portable electronic device includes a baseband integrated circuit configured to generate communication data and control signals. The portable electronic device also includes an optical path configured to be coupled to the baseband integrated circuit to transmit the data signals from the baseband integrated circuit. The portable electronic device additionally includes a radiohead configured to be coupled to the optical path to receive the data signals transmitted along the optical path from the baseband integrated circuit.
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