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

IPC: H04B1/48 ,  H03H7/42 ,  H03F3/24

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

IPC: H04W28/20 ,  H04W28/26 ,  H04W28/08 ,  H04W72/04

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.

公开(公告)号：US20210091917A1

公开(公告)日：2021-03-25

申请号：US16582769

申请日：2019-09-25

Applicant: Apple Inc.

Inventor： Nedim Muharemovic ,  Joonhoi Hur ,  Rastislav Vazny

IPC: H04L5/14 ,  H04B1/04 ,  H04B1/16 ,  H03H11/28 ,  H03H11/34 ,  H03H7/42

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：US20210036688A1

公开(公告)日：2021-02-04

申请号：US17073590

申请日：2020-10-19

Applicant: Apple Inc.

Inventor： Joonhoi Hur ,  Rastislav Vazny ,  Ronald W. Dimpflmaier

IPC: H03H9/72 ,  H03H7/46 ,  H04L5/14 ,  H04B1/12 ,  H03H9/145 ,  H03H9/64 ,  H04B1/52 ,  H04B1/38

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：US10826545B1

公开(公告)日：2020-11-03

申请号：US16582783

申请日：2019-09-25

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.

公开(公告)号：US20200106474A1

公开(公告)日：2020-04-02

申请号：US16145857

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Joonhoi Hur ,  Rastislav Vazny ,  Ronald W. Dimpflmaier

IPC: H04B1/58 ,  H04B1/44 ,  H04B1/525 ,  H03H7/46 ,  H04L5/14 ,  H04B1/04

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.

公开(公告)号：US10541716B1

公开(公告)日：2020-01-21

申请号：US16146064

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Rastislav Vazny ,  Joonhoi Hur ,  Ronald W. Dimpflmaier

IPC: H04B1/40 ,  H04B1/405 ,  H04B1/18 ,  H04B17/16 ,  H03F3/195

Abstract: Systems and methods for improving operational efficiency of a radio frequency system, which includes an antenna amplifier unit that amplifies a data stream while the data stream is being wirelessly communicated and another antenna amplifier unit that amplifies another data stream while the other data stream is being wirelessly communicated. The radio frequency system includes a transceiver amplifier unit coupled to the antenna amplifier unit via an electrical connector, in which the transceiver amplifier unit amplifies the data stream while the data stream is being wirelessly communicated, another transceiver amplifier unit coupled to the other antenna amplifier unit via another electrical connector, in which the other transceiver amplifier unit amplifies the other data stream while the other data stream is being wirelessly communicated, and an electrical connector switching device coupled between antenna-sides of the electrical connector and the other electrical connector.

公开(公告)号：US12283739B2

公开(公告)日：2025-04-22

申请号：US17932275

申请日：2022-09-14

Applicant: Apple Inc.

Inventor： Christof Pfannenmüller ,  Dominic Koehler ,  Harald Pretl ,  Rastislav Vazny

IPC: H01P5/22 ,  H04B1/04 ,  H04B1/16 ,  H04B1/48

Abstract: An electronic device may include isolation circuitry coupled between a transmitter, a receiver, and one or more antennas. The isolation circuitry may include a 90 degree hybrid coupler configured receive a transmission (TX) signal from the transmitter, split the TX signal into a first portion and a second portion, and phase-shift a portion such that the portions are +90 degrees out-of-phase. The isolation circuitry may include phase shifters that phase-shift the portions such that the portions are in-phase prior to propagating to the antenna. The phase shifters may receive a first portion and a second portion of a receiver (RX) signal from splitter circuitry. The phase shifters may phase-shift the portions such that the portions are out-of-phase by −90 degrees. The 90 degree hybrid coupler may phase-shift the first portion and/or the second portion such that the portions are in-phase and constructively combine prior to propagating to the receiver.

公开(公告)号：US20250119113A1

公开(公告)日：2025-04-10

申请号：US18987161

申请日：2024-12-19

Applicant: Apple Inc.

Inventor： Oliver Georg Dorn ,  Joonhoi Hur ,  Rastislav Vazny

IPC: H03H7/38 ,  H03F3/24 ,  H04B1/44

Abstract: Embodiments presented herein relate to isolating a receiver circuit of an electronic device from a transmission signal and from a noise signal at a frequency range of a received 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 and the one or more antennas may be balanced such that the receiver circuit is effectively removed from the transceiver circuitry and isolated from the transmission signal. The impedance of the variable impedance devices and the one or more antennas may also be configured to isolate the receiver circuit from a noise signal generated at the transmission circuit having a frequency in the range of the receive signal.

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

IPC: G01S13/42 ,  H01Q3/34

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.