公开(公告)号：US20230006629A1

公开(公告)日：2023-01-05

申请号：US17366692

申请日：2021-07-02

Applicant: Apple Inc.

Inventor： Björn Lenhart ,  Joonhoi Hur ,  Harald Pretl ,  Rastislav Vazny

IPC: H03H7/40 ,  H04B17/12 ,  G06N20/00 ,  H04B17/10 ,  H04B1/04

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.

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：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：US11522742B2

公开(公告)日：2022-12-06

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：US11368342B2

公开(公告)日：2022-06-21

申请号：US17015513

申请日：2020-09-09

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：US12040772B2

公开(公告)日：2024-07-16

申请号：US17366692

申请日：2021-07-02

Applicant: Apple Inc.

Inventor： Björn Lenhart ,  Joonhoi Hur ,  Harald Pretl ,  Rastislav Vazny

IPC: H03H7/40 ,  G06N20/00 ,  H04B1/04 ,  H04B17/10 ,  H04B17/12

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.

公开(公告)号：US20220078059A1

公开(公告)日：2022-03-10

申请号：US17015513

申请日：2020-09-09

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：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

IPC: H03H7/40 ,  G06N20/00 ,  H04B1/04 ,  H04B17/10 ,  H04B17/12

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.

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.