-
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.
-
公开(公告)号：US11705927B2
公开(公告)日：2023-07-18
申请号：US17481114
申请日：2021-09-21
Applicant: Apple Inc.
Inventor： Joonhoi Hur , Rastislav Vazny
CPC classification number: H04B1/0057 , H03F1/0288 , H03F1/56 , H04B1/123 , H03F2200/451
Abstract: A duplexer may be used to isolate a transmitter and a receiver that share a common antenna. By using impedance gradients to provide impedances that cause balance-unbalance transformers (balun) of the duplexer to cut-off access to the common antenna rather than duplicate the antenna impedance, the duplexer is balanced. Such cut-offs may have a lower insertion loss than a duplexer that merely duplicates the antenna impedance to separate the differential signals of the receiver and transmitter from the common mode signal.
-
公开(公告)号：US11652675B2
公开(公告)日：2023-05-16
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
CPC classification number: H04L27/2601
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.
-
公开(公告)号：US11438131B2
公开(公告)日：2022-09-06
申请号：US17188574
申请日：2021-03-01
Applicant: Apple Inc.
Inventor： Nedim Muharemovic , Joonhoi Hur , Rastislav Vazny
Abstract: An electrical balance duplexer (EBD) may be used to isolate a transmitter and receiver that share a common antenna. By using impedance gradients to provide impedances that cause balance-unbalance transformers (balun) of the EBD to cut-off access to the common antenna rather than duplicate the antenna impedance, the EBD is balanced. Such cut-offs may have a lower insertion loss than an EBD that merely duplicates the antenna impedance to separate the differential signals of the receiver/transmitter from the common mode signal.
-
公开(公告)号：US11368181B2
公开(公告)日：2022-06-21
申请号：US16916914
申请日：2020-06-30
Applicant: Apple Inc.
Inventor： Oliver Georg Dorn , Joonhoi Hur , Rastislav Vazny
Abstract: An electrical balance duplexer has multiple impedance gradients and multiple impedance tuners. The electrical balance duplexer transmits an outgoing signal from a transmitter during a transmission mode when a first set of impedance gradients of the multiple impedance gradients is operating in a first impedance state and a first set of impedance tuners of the multiple impedance tuners is operating in a second state. The electrical balance duplexer isolates the outgoing signal from a receiver during the transmission mode when a second set of impedance gradients of the multiple impedance gradients and a second set of impedance tuners of the multiple impedance tuners are operating in the second impedance state.
-
Patent Agency Ranking
公开(公告)号：US20220182079A1
公开(公告)日：2022-06-09
申请号：US17582872
申请日：2022-01-24
Applicant: Apple Inc.
Inventor： Nedim Muharemovic , Joonhoi Hur , Rastislav Vazny
Abstract: Embodiments disclosed herein relate to isolating a receiver circuit of an electronic device from a transmission signal and leakage of the transmission signal. To do so, an isolation circuit is disposed between the receiver circuit and a transmission circuit. The isolation circuit may include multiple variable impedance devices and one or more antennas. The impedances of the variable impedance devices may be balanced such that a signal at a particular frequency or within a particular frequency band can pass through or is blocked by the isolation circuit. The isolation circuit may include one or more double balanced duplexers to achieve the improved isolation. The isolation circuit may also increase bandwidth available for wireless communications of the electronic device.
-
公开(公告)号：US11356078B2
公开(公告)日：2022-06-07
申请号：US17073590
申请日：2020-10-19
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.
-
公开(公告)号：US20220078060A1
公开(公告)日：2022-03-10
申请号：US17480909
申请日：2021-09-21
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.
-
公开(公告)号：US11265038B1
公开(公告)日：2022-03-01
申请号：US17116360
申请日：2020-12-09
Applicant: Apple Inc.
Inventor： Nedim Muharemovic , Joonhoi Hur , Rastislav Vazny
Abstract: Embodiments disclosed herein relate to isolating a receiver circuit of an electronic device from a transmission signal and leakage of the transmission signal. To do so, an isolation circuit is disposed between the receiver circuit and a transmission circuit. The isolation circuit may include multiple variable impedance devices and one or more antennas. The impedances of the variable impedance devices may be balanced such that a signal at a particular frequency or within a particular frequency band can pass through or is blocked by the isolation circuit. The isolation circuit may include one or more double balanced duplexers to achieve the improved isolation. The isolation circuit may also increase bandwidth available for wireless communications of the electronic device.
-
公开(公告)号：US20210136629A1
公开(公告)日：2021-05-06
申请号：US17081785
申请日：2020-10-27
Applicant: Apple Inc.
Inventor： Anatoliy Sergey Ioffe , Lydi Smaini , Rastislav Vazny , Ronald William Dimpflmaier , Alexander Sayenko
Abstract: An electronic device discussed herein may include radio frequency communication circuitry for communication on a radio frequency network according to a communication configuration, a processor, and memory. The memory may store instructions that, when executed by the processor, cause the electronic device to perform operations including receiving, a first muting configuration indicating when the radio frequency communication circuitry is to communicate using a first type of communication on a first frequency band and when the radio frequency communication circuitry is to communicate using a second type of communication on a second frequency band, where the first frequency band may overlap with the second frequency band. The memory may store instructions that, when executed by the processor, cause the electronic device to perform operations including transmitting or receiving a data packet using the radio frequency communication circuitry according to the communication configuration.
-
-
-
-
-
-
-
-
-
Search Results
98
records
(took 0.022 seconds)
