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1. 发明授权

US09781683B2 Determining transmit power limits using a combined specific absorption measurement for multiple transmitters 有权
公开(公告)号：US09781683B2
公开(公告)日：2017-10-03
申请号：US14572214
申请日：2014-12-16
申请人： QUALCOMM Incorporated
发明人： Jagadish Nadakuduti , Lin Lu , Paul Guckian
IPC分类号： H04W52/18 , H04W24/02 , H04B1/3827 , H04W52/36 , H04B17/10
CPC分类号： H04W52/18 , H04B1/3838 , H04B17/102 , H04W24/02 , H04W52/367
摘要： 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.

2. 发明授权

US10652833B2 Evaluating radio frequency (RF) exposure in real time 有权
公开(公告)号：US10652833B2
公开(公告)日：2020-05-12
申请号：US16460894
申请日：2019-07-02
申请人： QUALCOMM Incorporated
发明人： Jagadish Nadakuduti , Lin Lu , Paul Guckian , Mingming Cai , Junsheng Han , Udara Fernando , Raghu Challa
IPC分类号： H04B7/00 , H04W52/22 , H04W52/12 , H04B1/3827
摘要： In certain aspects, a method implemented in a wireless device includes determining a specific absorption rate (SAR) distribution for a first wireless communication technology, determining a power density (PD) distribution for a second wireless communication technology, and combining the SAR distribution and the PD distribution to generate a combined RF exposure distribution. The method also includes determining at least one first maximum allowable power level and at least one second maximum allowable power level for a future time slot based on the combined RF exposure distribution, setting at least one transmission power limit for a first transmitter in the future time slot based on the at least one first maximum allowable power level, and setting at least one transmission power limit for a second transmitter in the future time slot based on the at least one second maximum allowable power level.

3. 发明授权

US10447413B1 Evaluating radio frequency exposure 有权
公开(公告)号：US10447413B1
公开(公告)日：2019-10-15
申请号：US16189274
申请日：2018-11-13
申请人： QUALCOMM Incorporated
发明人： Jagadish Nadakuduti , Lin Lu , Paul Guckian
IPC分类号： H04W52/02 , H04B17/10 , H04W52/22 , H04B1/3827 , H04W52/36 , H04B17/40
摘要： Methods and systems for assessing radio frequency (RF) exposure from a wireless device. An example apparatus generally includes at least one processor configured to determine a time-averaged radio frequency (RF) exposure measurement over a time window, comprising a number of time slots, accounting for a future time slot; determine a maximum allowed transmission power level for the future time slot based on a reduced power limit and the time-averaged RF exposure measurement, the reduced power limit being less than a transmission power limit for the time window; and set a transmission power level for the future time slot based on the maximum allowed transmission power level. The example apparatus also includes an interface configured to output one or more signals for transmission during the future time slot at the transmission power level.

4. 发明授权

US09237531B2 Real-time exposure assessment 有权
标题翻译：实时曝光评估
公开(公告)号：US09237531B2
公开(公告)日：2016-01-12
申请号：US13801232
申请日：2013-03-13
申请人： QUALCOMM Incorporated
发明人： Lin Lu , Jagadish Nadakuduti , Paul Guckian
IPC分类号： H04B7/00 , H04W52/36
CPC分类号： H04W52/367
摘要： Efficient techniques for determining compliance of a wireless device with radio-frequency (RF) exposure standards and regulations. In an aspect, two-dimensional surface scans of a device are determined and stored in a memory during a certification phase. Each scan corresponds to a basis surface scan wherein only one transmitter and one antenna of the device are active. During real-time operation, the basis surface scans corresponding to the real-time active transmitters and antennas of the device are retrieved. The retrieved scans are processed according to the real-time operating parameters to determine an estimated RF exposure metric, e.g., a peak specific absorption rate (SAR). The transmit power levels of the device may be adjusted in real time to ensure compliance of the estimated RF exposure metric with applicable standards and regulations.
摘要翻译：确定无线设备符合射频（RF）暴露标准和法规的有效技术。在一方面，设备的二维表面扫描在认证阶段被确定并存储在存储器中。每个扫描对应于基础表面扫描，其中只有一个发射机和一个天线的设备是活动的。在实时操作期间，检索对应于实时有源发射机和设备天线的基础表面扫描。根据实时操作参数来处理检索的扫描以确定估计的RF暴露度量，例如峰值比吸收率（SAR）。可以实时调整设备的发射功率电平，以确保估计的RF辐射度量符合适用的标准和规定。

5. 发明授权

US09622187B2 Real-time specific absorption rate implementation in wireless devices 有权
公开(公告)号：US09622187B2
公开(公告)日：2017-04-11
申请号：US15052378
申请日：2016-02-24
申请人： QUALCOMM Incorporated
发明人： Theodore Logan , Jagadish Nadakuduti , Lin Lu , Paul Guckian
IPC分类号： H04B1/04 , H04W52/18 , H04W52/36 , H04B1/034
CPC分类号： H04W52/18 , H04W52/226 , H04W52/36 , H04W52/367
摘要： 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.

6. 发明授权

US09575108B2 Compliance assessment of human exposure from wireless electric vehicle charging system using at least one phantom model 有权
标题翻译：使用至少一个幻影模型对无线电动车辆充电系统的人体暴露进行合规性评估
公开(公告)号：US09575108B2
公开(公告)日：2017-02-21
申请号：US14574095
申请日：2014-12-17
申请人： QUALCOMM Incorporated
发明人： Lin Lu , Jagadish Nadakuduti , Paul Guckian
IPC分类号： G08B21/00 , G01R29/08 , B60L11/18 , B60L3/12
CPC分类号： 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
摘要： 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.
摘要翻译：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。

7. 发明申请

US20150197155A1 CONTROLLING CURRENT FLOW PATH IN WIRELESS ELECTRIC VEHICLE CHARGING SYSTEMS FOR MITIGATING RF RADIATED EMISSIONS 审中-公开
标题翻译：控制无线电动车辆充电系统中的电流流动路径，以减少射频辐射发射
公开(公告)号：US20150197155A1
公开(公告)日：2015-07-16
申请号：US14489386
申请日：2014-09-17
申请人： QUALCOMM Incorporated
发明人： Lin Lu , Paul Guckian , Jagadish Nadakuduti
IPC分类号： B60L11/18
CPC分类号： B60L11/182 , B60L53/12 , B60L2270/147 , H02J50/90 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
摘要： 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.
摘要翻译：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。

8. 发明申请

US20150177302A1 COMPLIANCE ASSESSMENT OF HUMAN EXPOSURE FROM WIRELESS ELECTRIC VEHICLE CHARGING SYSTEM 有权
标题翻译：无线电动车辆充电系统人员接触的合规评估
公开(公告)号：US20150177302A1
公开(公告)日：2015-06-25
申请号：US14574095
申请日：2014-12-17
申请人： QUALCOMM Incorporated
发明人： Lin Lu , Jagadish Nadakuduti , Paul Guckian
IPC分类号： G01R29/08
CPC分类号： 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
摘要： 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.
摘要翻译：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。

9. 发明授权

US10511191B2 Apparatus and methods for wireless power transmitter coil configuration 有权
公开(公告)号：US10511191B2
公开(公告)日：2019-12-17
申请号：US15094801
申请日：2016-04-08
申请人： QUALCOMM Incorporated
发明人： Zhe Zhang , Jagadish Nadakuduti , Lin Lu , Paul Guckian
IPC分类号： H02J50/12 , H02J7/02 , H01F38/14 , H02J50/10
摘要： Methods and apparatus are disclosed for wirelessly transmitting power. In one aspect, an apparatus for wireless transmitting power is provided. The apparatus comprises a first coil loop defining a first area, the first coil loop conducting current at a first current value for generating a first magnetic field. The apparatus further comprises a second coil loop surrounding the first coil loop and defining a second area, the second coil loop conducting current at a second current value generating a second magnetic field, wherein a ratio of the first current value to the first area is substantially equal to a ratio of the second current value to the second area.

10. 发明申请

US20170012475A1 APPARATUS AND METHODS FOR WIRELESS POWER TRANSMITTER COIL CONFIGURATION 审中-公开
标题翻译：无线发射机线圈配置的装置和方法
公开(公告)号：US20170012475A1
公开(公告)日：2017-01-12
申请号：US15094801
申请日：2016-04-08
申请人： QUALCOMM Incorporated
发明人： Zhe Zhang , Jagadish Nadakuduti , Lin Lu , Paul Guckian
IPC分类号： H02J50/12 , H02J7/02 , H01F38/14
摘要： Methods and apparatus are disclosed for wirelessly transmitting power. In one aspect, an apparatus for wireless transmitting power is provided. The apparatus comprises a first coil loop defining a first area, the first coil loop conducting current at a first current value for generating a first magnetic field. The apparatus further comprises a second coil loop surrounding the first coil loop and defining a second area, the second coil loop conducting current at a second current value generating a second magnetic field, wherein a ratio of the first current value to the first area is substantially equal to a ratio of the second current value to the second area.
摘要翻译：公开了用于无线发射功率的方法和装置。一方面，提供了一种用于无线发射功率的装置。该装置包括限定第一区域的第一线圈环路，第一线圈环路以第一电流值传导电流以产生第一磁场。所述装置还包括围绕所述第一线圈环并限定第二区域的第二线圈环路，所述第二线圈环路以第二电流值传导电流产生第二磁场，其中所述第一电流值与所述第一区域的比率基本上等于第二电流值与第二区域的比率。

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