公开(公告)号：US20210392585A1

公开(公告)日：2021-12-16

申请号：US17460941

申请日：2021-08-30

Applicant: Apple Inc.

Inventor： Christian Drewes ,  Giuseppe Patane ,  Thomas Mayer ,  Christian Wicpalek ,  Ram Kanumalli ,  Burkhard Neurauter

IPC: H04W52/02 ,  H04B1/00 ,  H04W72/04

Abstract: A receiver includes a tunable receiving chain, configured to receive a subframe header when tuned to a first receiving bandwidth; a decoder, configured to decode an allocation information from the subframe header, the allocation information indicating an allocation of a plurality of resource blocks in the subframe; and a controller, configured to derive a second receiving bandwidth from the allocation information and to tune the receiving chain to the second receiving bandwidth.

公开(公告)号：US12003244B2

公开(公告)日：2024-06-04

申请号：US17469272

申请日：2021-09-08

Applicant: Apple Inc.

Inventor： Helena Deirdre O'Shea ,  Dmitry Cherniavsky ,  Tim Schoenauer ,  Ali Moaz ,  Rahmi Hezar ,  Ram Kanumalli

IPC: H04B1/10 ,  G06F1/08 ,  G06F13/40 ,  H03K5/1252

CPC classification number: H03K5/1252 ,  G06F1/08 ,  G06F13/4027

Abstract: Embodiments relate to updating spur cancellation at a victim integrated circuit (IC) in accordance with dynamic changes in the operating frequencies of an aggressor IC. The aggressor IC changes its operating frequencies at an update time that is determined in advance. The update time and the changes to the operating frequencies are shared with the victim IC. The victim IC dynamically updates the relationships between frequencies of local clock signals for the victim IC and the aggressor IC. The victim IC generates a spur cancellation parameter based on the updated relationships of local clock frequencies, the update time and the changes to the operating frequencies of the aggressor IC, and configures a spur cancellation circuit. In this way, the victim IC may perform effective spur cancellation despite changes in the operating frequencies of the aggressor IC and deviation of the local clock frequencies.

公开(公告)号：US11109317B2

公开(公告)日：2021-08-31

申请号：US15760859

申请日：2016-08-22

Applicant: Apple Inc.

Inventor： Christian Drewes ,  Giuseppe Patane ,  Thomas Mayer ,  Christian Wicpalek ,  Ram Kanumalli ,  Burkhard Neurauter

IPC: H04W4/00 ,  H04W52/02 ,  H04B1/00 ,  H04W72/04

Abstract: A receiver includes a tunable receiving chain, configured to receive a subframe header when tuned to a first receiving bandwidth; a decoder, configured to decode an allocation information from the subframe header, the allocation information indicating an allocation of a plurality of resource blocks in the subframe; and a controller, configured to derive a second receiving bandwidth from the allocation information and to tune the receiving chain to the second receiving bandwidth.

公开(公告)号：US11902899B2

公开(公告)日：2024-02-13

申请号：US17460941

申请日：2021-08-30

Applicant: Apple Inc.

Inventor： Christian Drewes ,  Giuseppe Patane ,  Thomas Mayer ,  Christian Wicpalek ,  Ram Kanumalli ,  Burkhard Neurauter

IPC: H04W52/02 ,  H04B1/00 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W52/0235 ,  H04B1/0082 ,  H04W72/0446 ,  H04W72/23

Abstract: A receiver includes a tunable receiving chain, configured to receive a subframe header when tuned to a first receiving bandwidth; a decoder, configured to decode an allocation information from the subframe header, the allocation information indicating an allocation of a plurality of resource blocks in the subframe; and a controller, configured to derive a second receiving bandwidth from the allocation information and to tune the receiving chain to the second receiving bandwidth.

公开(公告)号：US20230072903A1

公开(公告)日：2023-03-09

申请号：US17469272

申请日：2021-09-08

Applicant: Apple Inc.

Inventor： Helena Deirdre O'Shea ,  Dmitry Cherniavsky ,  Tim Schoenauer ,  Ali Moaz ,  Rahmi Hezar ,  Ram Kanumalli

IPC: H03K5/1252 ,  G06F13/40 ,  G06F1/08

Abstract: Embodiments relate to updating spur cancellation at a victim integrated circuit (IC) in accordance with dynamic changes in the operating frequencies of an aggressor IC. The aggressor IC changes its operating frequencies at an update time that is determined in advance. The update time and the changes to the operating frequencies are shared with the victim IC. The victim IC dynamically updates the relationships between frequencies of local clock signals for the victim IC and the aggressor IC. The victim IC generates a spur cancellation parameter based on the updated relationships of local clock frequencies, the update time and the changes to the operating frequencies of the aggressor IC, and configures a spur cancellation circuit. In this way, the victim IC may perform effective spur cancellation despite changes in the operating frequencies of the aggressor IC and deviation of the local clock frequencies.

公开(公告)号：US10992335B2

公开(公告)日：2021-04-27

申请号：US16095761

申请日：2017-06-01

Applicant: Apple Inc.

Inventor： Ahmed Elmaghraby ,  Ram Kanumalli ,  Werner Schelmbauer ,  Stefan Herzinger ,  Peter Noest

IPC: H04B1/525 ,  H04B1/12

Abstract: A transceiver for reducing a distortion component within a baseband receive signal is provided. The distortion component is caused by a baseband transmit signal. The transceiver includes a filter configured to filter the baseband transmit signal using a configurable transfer function to generate a modified baseband transmit signal. The configurable transfer function is based on a leakage component in the baseband receive signal, wherein the leakage component is caused by the baseband transmit signal. The transceiver further includes a processing unit configured to generate, based on the modified baseband transmit signal, an envelope signal representing the envelope of the modified baseband transmit signal. Moreover, the transceiver includes a combiner configured to combine the baseband receive signal and a signal related to the envelope signal.