公开(公告)号：US12063060B2

公开(公告)日：2024-08-13

申请号：US18198255

申请日：2023-05-16

Applicant: QUALCOMM Incorporated

Inventor： Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian

IPC: H04W52/38 ,  H04B1/3827 ,  H04B17/10

CPC classification number: H04B1/3838 ,  H04B17/104 ,  H04W52/38

Abstract: According to certain aspects a wireless device includes transmitters, and a processor coupled to the transmitters. The processor is configured to determine a radio frequency (RF) exposure value at a peak location based on transmission power levels for the transmitters, determine a contribution of each one of the transmitters to the RF exposure value at the peak location, and reduce the transmission power level for each one of one or more of the transmitters based on the contributions of the transmitters to the RF exposure value at the peak location.

公开(公告)号：US11870478B2

公开(公告)日：2024-01-09

申请号：US17384682

申请日：2021-07-23

Applicant: QUALCOMM Incorporated

Inventor： Udara Fernando ,  Lin Lu

IPC: H01Q1/24 ,  H01Q3/24 ,  H01Q3/26 ,  H04B1/38 ,  H04B1/3827 ,  H04W52/28

CPC classification number: H04B1/3838 ,  H01Q1/243 ,  H01Q1/245 ,  H04W52/28

Abstract: An apparatus including a housing; sensors configured to sense one or more locations upon which a user is gripping the housing; sensors including antenna modules configured to transmit a signal based on the one or more locations upon which the user is gripping the housing. Another aspect relates to an apparatus including a housing; a set of antenna modules situated proximate at different surface locations along the housing; and a controller configured to operate the set of antenna modules to determine at least one or more electromagnetic leakage coupling between at least one pair of antenna modules of the set. In this aspect, the controller may be configured to select one or more of the set of antenna modules for transmitting a signal based on the one or more electromagnetic leakage coupling associated with one or more of the different locations where a user grips the housing, respectively.

公开(公告)号：US11101834B2

公开(公告)日：2021-08-24

申请号：US16696743

申请日：2019-11-26

Applicant: QUALCOMM Incorporated

Inventor： Udara Fernando ,  Lin Lu

IPC: H04B1/3827 ,  H01Q1/24 ,  H04W52/28

Abstract: An apparatus including a housing; sensors configured to sense one or more locations upon which a user is gripping the housing; sensors including antenna modules configured to transmit a signal based on the one or more locations upon which the user is gripping the housing. Another aspect relates to an apparatus including a housing; a set of antenna modules situated proximate at different surface locations along the housing; and a controller configured to operate the set of antenna modules to determine at least one or more electromagnetic leakage coupling between at least one pair of antenna modules of the set. In this aspect, the controller may be configured to select one or more of the set of antenna modules for transmitting a signal based on the one or more electromagnetic leakage coupling associated with one or more of the different locations where a user grips the housing, respectively.

公开(公告)号：US09781683B2

公开(公告)日：2017-10-03

申请号：US14572214

申请日：2014-12-16

Applicant: QUALCOMM Incorporated

Inventor： Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian

IPC: H04W52/18 ,  H04W24/02 ,  H04B1/3827 ,  H04W52/36 ,  H04B17/10

CPC classification number: H04W52/18 ,  H04B1/3838 ,  H04B17/102 ,  H04W24/02 ,  H04W52/367

Abstract: A method and apparatus for determining transmit power limits for multiple transmitter devices is provided. The method begins when a two-dimensional area scan and a localized three-dimensional volume scan are performed for each transmitter and antenna. These two-dimensional area scans are converted to a three-dimensional full volume data using analytical estimations to determine the peak averaged SAR value, and subsequently determining the error associated with the analytical estimation. The error associated with the analytical estimation is determined by comparison with the measured value. The combined peak averaged SAR may then be determined for simultaneous transmissions of multiple transmitters with varying transmit powers by combining the scaled and analytically determined three-dimensional full volume data for each transmitter. The value is then further scaled by the worst-case conversion error for all active transmitters. This value is compared with the SAR limit and the maximum allowable transmit power determined for the multiple transmitters.

公开(公告)号：US11817926B2

公开(公告)日：2023-11-14

申请号：US17448651

申请日：2021-09-23

Applicant: QUALCOMM Incorporated

Inventor： Thawatt Gopal ,  Sridhar Bandaru ,  Brian Clarke Banister ,  Reza Shahidi ,  Troy Curtiss ,  Akhil Deodhar ,  Lin Lu ,  Jagadish Nadakuduti

IPC: H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0602 ,  H04B7/0465 ,  H04B7/0623

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an apparatus may determine a time-averaged power limit of a set of antennas. The apparatus may modify an antenna switching configuration based at least in part on the time-averaged power limit. The apparatus may transmit a signal using an antenna, from the set of antennas, associated with the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas. Numerous other aspects are described.

公开(公告)号：US09622187B2

公开(公告)日：2017-04-11

申请号：US15052378

申请日：2016-02-24

Applicant: QUALCOMM Incorporated

Inventor： Theodore Logan ,  Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian

IPC: H04B1/04 ,  H04W52/18 ,  H04W52/36 ,  H04B1/034

CPC classification number: H04W52/18 ,  H04W52/226 ,  H04W52/36 ,  H04W52/367

Abstract: Embodiments disclosed herein provide a method and apparatus for optimizing time-averaged transmitter power of a communications device. A time-averaged SAR is computed over a predefined time window using past transmitter power levels with minimum transmitter power equal to reserve transmitter power for any time interval. Based on the time-averaged SAR a maximum allowable transmitter power for a future fixed time interval is determined. The communication device then transmits at a power equal to or less than the maximum allowable transmitter power. The communication device may back off from high transmitter power to a reserve transmitter power when calculated time-averaged SAR approaches the SAR limit. When old high power transmissions expire, the communication device gains SAR margin and may then transmit at high power. The apparatus comprises: at least one antenna, a transmitter in communication with a power supply, a receiver, a timer in communication with a processor, and a memory.

公开(公告)号：US09575108B2

公开(公告)日：2017-02-21

申请号：US14574095

申请日：2014-12-17

Applicant: QUALCOMM Incorporated

Inventor： Lin Lu ,  Jagadish Nadakuduti ,  Paul Guckian

IPC: G08B21/00 ,  G01R29/08 ,  B60L11/18 ,  B60L3/12

CPC classification number: G01R29/0878 ,  B60L3/12 ,  B60L11/182 ,  B60L11/1838 ,  B60L2230/10 ,  B60L2260/44 ,  B60L2270/147 ,  G01R29/0814 ,  G01R29/0857 ,  Y02T10/7005 ,  Y02T10/7088 ,  Y02T90/121 ,  Y02T90/122 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163

Abstract: This disclosure provides systems, methods and apparatus for assessing electromagnetic exposure. In one aspect an apparatus is provided. The apparatus includes at least a first circuit configured to calculate electromagnetic exposure of at least a portion of at least one human in proximity to a wireless electric vehicle charging system. The portion of the at least one human is modeled by at least one homogeneous phantom model having dielectric properties that are representative of human tissue. The apparatus further includes at least a second circuit configured to scale the calculated electromagnetic exposure to simulate an electromagnetic exposure based on an inhomogeneous anatomical model of the portion of the at least one human.

Abstract translation: 本公开提供了用于评估电磁辐射的系统，方法和装置。 在一个方面，提供一种装置。 该装置至少包括第一电路，其被配置为计算接近无线电动车辆充电系统的至少一个人的至少一部分的电磁辐射。 至少一个人的部分由具有代表人体组织的介电性质的至少一个均匀体模型建模。 该装置还包括至少第二电路，其被配置为基于所述至少一个人的该部分的不均匀解剖模型来缩放所计算的电磁暴露以模拟电磁暴露。

公开(公告)号：US20160352379A1

公开(公告)日：2016-12-01

申请号：US14723711

申请日：2015-05-28

Applicant: QUALCOMM Incorporated

Inventor： Shriram Ganesh ,  Babak Forutanpour ,  Lin Lu

IPC: H04B1/3827 ,  G06F9/46 ,  H04W4/00

CPC classification number: H04B1/3838 ,  G06F9/46 ,  H04W4/60

Abstract: Embodiments described herein provide a method for scheduling background processes. The method begins when a task scheduler requests a SAR severity level from the application processor. The application processor then requests the SAR severity level from the modem. Upon receipt of the SAR severity level the task scheduler then determines if the SAR severity level is high. If the SAR severity level is high, the task scheduler waits a predetermined time and then requests a further SAR severity level. This process continues until the SAR severity level returned in within a normal level. At that time, the background process is scheduled. This prioritizes transmission. The apparatus includes a task scheduler in communication with an application processor and a modem in communication with the application processor. The task scheduler may include a memory and a timer.

Abstract translation: 本文描述的实施例提供了一种用于调度后台进程的方法。 当任务调度程序从应用程序处理器请求SAR严重性级别时，该方法开始。 然后应用处理器从调制解调器请求SAR严重性级别。 在收到SAR严重性级别后，任务调度程序将确定SAR严重性级别是否高。 如果SAR严重性级别较高，则任务调度程序等待预定时间，然后再请求SAR严重性级别。 此过程一直持续到SAR严重级别返回到正常级别之内。 那时候，这个后台进程是安排的。 这将优先传输。 该装置包括与应用处理器通信的任务调度器和与应用处理器通信的调制解调器。 任务调度器可以包括存储器和定时器。

公开(公告)号：US20150197155A1

公开(公告)日：2015-07-16

申请号：US14489386

申请日：2014-09-17

Applicant: QUALCOMM Incorporated

Inventor： Lin Lu ,  Paul Guckian ,  Jagadish Nadakuduti

IPC: B60L11/18

CPC classification number: B60L11/182 ,  B60L53/12 ,  B60L2270/147 ,  H02J50/90 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/122 ,  Y02T90/14

Abstract: This disclosure provides systems, methods and apparatus for mitigating electromagnetic radiation emissions. In one aspect, a power transfer device of a wireless electric vehicle charging (WEVC) system is provided. The power transfer device includes a ferrite material and at least one electrically conductive coil. The ferrite material and the at least one coil are configured to wirelessly transfer energy either from or to a second power transfer device of the WEVC system. The power transfer device further includes at least one shield comprising a plurality of electrically conducting regions and one or more electrically insulating regions. The plurality of electrically conducting regions and one or more electrically insulating regions are configured to mitigate electromagnetic radiation emissions from the WEVC system that do not contribute to the wireless power transfer between the at least one electrically conductive coil and the second power transfer device.

Abstract translation: 本公开提供了用于减轻电磁辐射发射的系统，方法和装置。 一方面，提供了一种无线电动车辆充电（WEVC）系统的电力传送装置。 功率传递装置包括铁氧体材料和至少一个导电线圈。 所述铁氧体材料和所述至少一个线圈被配置为从WEVC系统的第二电力传送装置或从所述WEVC系统的第二电力传送装置无线地传输能量。 功率传输装置还包括至少一个屏蔽，其包括多个导电区域和一个或多个电绝缘区域。 多个导电区域和一个或多个电绝缘区域被配置为减轻来自WEVC系统的电磁辐射发射，其不对至少一个导电线圈和第二功率传输装置之间的无线功率传输有贡献。

公开(公告)号：US20150177302A1

公开(公告)日：2015-06-25

申请号：US14574095

申请日：2014-12-17

Applicant: QUALCOMM Incorporated

Inventor： Lin Lu ,  Jagadish Nadakuduti ,  Paul Guckian

IPC: G01R29/08

CPC classification number: G01R29/0878 ,  B60L3/12 ,  B60L11/182 ,  B60L11/1838 ,  B60L2230/10 ,  B60L2260/44 ,  B60L2270/147 ,  G01R29/0814 ,  G01R29/0857 ,  Y02T10/7005 ,  Y02T10/7088 ,  Y02T90/121 ,  Y02T90/122 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163

Abstract: This disclosure provides systems, methods and apparatus for assessing electromagnetic exposure. In one aspect an apparatus is provided. The apparatus includes at least a first circuit configured to calculate electromagnetic exposure of at least a portion of at least one human in proximity to a wireless electric vehicle charging system. The portion of the at least one human is modeled by at least one homogeneous phantom model having dielectric properties that are representative of human tissue. The apparatus further includes at least a second circuit configured to scale the calculated electromagnetic exposure to simulate an electromagnetic exposure based on an inhomogeneous anatomical model of the portion of the at least one human.

Abstract translation: 本公开提供了用于评估电磁辐射的系统，方法和装置。 在一个方面，提供一种装置。 该装置至少包括第一电路，其被配置为计算接近无线电动车辆充电系统的至少一个人的至少一部分的电磁辐射。 至少一个人的部分由具有代表人体组织的介电性质的至少一个均匀体模型建模。 该装置还包括至少第二电路，其被配置为基于所述至少一个人的该部分的不均匀解剖模型来缩放所计算的电磁暴露以模拟电磁暴露。