公开(公告)号：US10299242B2

公开(公告)日：2019-05-21

申请号：US15811115

申请日：2017-11-13

Applicant: Apple Inc.

Inventor： Navid Lashkarian ,  Marcellus D. Forbes ,  Ling Su

IPC: H04W64/00 ,  H01Q3/26 ,  G01S3/14 ,  H04B17/309 ,  H04B7/06 ,  H01Q3/24 ,  H01Q3/36 ,  H01Q21/06

Abstract: The representative embodiments discussed in the present disclosure relate to techniques in which the transmission and reception of phase array antennas may be measured to more accurately and more efficiently estimate incidence angles of the associated RF signals. More specifically, in some embodiments, RF signals may be transmitted and received by various subsets of antennas in a pair of phased antenna arrays, and the resulting signals may adaptively filtered and fed back to perform iterations until incidence angles may be accurately determined.

公开(公告)号：US10122391B2

公开(公告)日：2018-11-06

申请号：US14870768

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Navid Lashkarian ,  Ehsan Adabi ,  Albert Chia-Wen Jerng ,  Arya Behzad ,  Ali Parsa

IPC: H04B1/04 ,  H04L27/36 ,  H03F1/32 ,  H03C5/00

Abstract: Systems and method provided herein relate to reducing distortion of signals introduced by components on a phase path of a radio frequency system polar architecture. To reduce phase path distortion, a pre-distortion is introduced prior to a distortion caused by the components on the phase path. The pre-distortion in conjunction with the component distortion results in a transmission signal that forms its expected shape.

公开(公告)号：US20180227878A1

公开(公告)日：2018-08-09

申请号：US15811115

申请日：2017-11-13

Applicant: Apple Inc.

Inventor： Navid Lashkarian ,  Marcellus D. Forbes ,  Ling Su

IPC: H04W64/00

CPC classification number: H04W64/003 ,  G01S3/143 ,  H01Q3/24 ,  H01Q3/2605 ,  H01Q3/2658 ,  H01Q3/36 ,  H01Q21/061 ,  H04B7/0617 ,  H04B17/309

Abstract: The representative embodiments discussed in the present disclosure relate to techniques in which the transmission and reception of phase array antennas may be measured to more accurately and more efficiently estimate incidence angles of the associated RF signals. More specifically, in some embodiments, RF signals may be transmitted and received by various subsets of antennas in a pair of phased antenna arrays, and the resulting signals may adaptively filtered and fed back to perform iterations until incidence angles may be accurately determined.

公开(公告)号：US20170093444A1

公开(公告)日：2017-03-30

申请号：US14870768

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Navid Lashkarian ,  Ehsan Adabi ,  Albert Chia-Wen Jerng ,  Arya Behzad ,  Ali Parsa

IPC: H04B1/04 ,  H04L27/36

CPC classification number: H04B1/0475 ,  H03C5/00 ,  H03F1/3241 ,  H04B1/0483 ,  H04B2001/0425 ,  H04L27/36 ,  H04L27/361 ,  H04L27/368

Abstract: Systems and method provided herein relate to reducing distortion of signals introduced by components on a phase path of a radio frequency system polar architecture. To reduce phase path distortion, a pre-distortion is introduced prior to a distortion caused by the components on the phase path. The pre-distortion in conjunction with the component distortion results in a transmission signal that forms its expected shape.

公开(公告)号：US09577771B1

公开(公告)日：2017-02-21

申请号：US15218923

申请日：2016-07-25

Applicant: Apple Inc.

Inventor： Navid Lashkarian ,  Saeed Chehrazi ,  Ali Parsa

IPC: H04L25/03 ,  H04B17/21 ,  H04B17/24

CPC classification number: H04B17/21 ,  H03F1/0227 ,  H03F1/0266 ,  H03F3/19 ,  H03F2200/102 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/465 ,  H04B17/11 ,  H04B17/13 ,  H04B17/14 ,  H04B17/24

Abstract: Systems and method for improving operation of a radio frequency system are provided. One embodiment provides a radio frequency system that includes an amplifier device with a first data path and a second data path. Additionally, the radio frequency system includes a controller that instructs the radio frequency system to transmit a calibration signal, which includes a first portion that excites the first data path and a second portion that excites the second data path; determines time skew between the first and second data paths based at least in part on phase shift between a first sample of a feedback signal and the first portion, phase shift between a second sample of the feedback signal and the second portion, or both; and instructs the radio frequency system to adjust delay applied on the first data path, the second data path, or both based at least on the time skew.

Abstract translation: 提供了改善射频系统操作的系统和方法。 一个实施例提供一种射频系统，其包括具有第一数据路径和第二数据路径的放大器装置。 另外，射频系统包括指示射频系统发送校准信号的控制器，该校准信号包括激励第一数据路径的第一部分和激励第二数据路径的第二部分; 至少部分地基于反馈信号的第一采样与第一部分之间的相移，反馈信号的第二采样与第二部分之间的相移或两者，确定第一和第二数据路径之间的时间偏移; 并且至少基于时间偏差来指示射频系统调整应用于第一数据路径，第二数据路径或两者的延迟。