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    Near-field equivalent source representation for SAR estimation
    21.
    发明授权
    Near-field equivalent source representation for SAR estimation 有权
    SAR估计的近场等效源表示

    公开(公告)号：US09083452B2

    公开(公告)日：2015-07-14

    申请号：US13801328

    申请日：2013-03-13

    Applicant: QUALCOMM Incorporated

    Inventor： Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian

    IPC: H04B5/00 ,  H04B17/00 ,  H04B1/3827 ,  H04B17/10

    CPC classification number: H04B17/10 ,  H04B1/3838 ,  H04B5/0025 ,  H04B5/0043 ,  H04B17/102

    Abstract: Efficient techniques for estimating specific absorption rate (SAR) for wireless devices. In an aspect, electric and/or magnetic field measurements are made over a two-dimensional (2D) surface in the proximity of a wireless device. The field measurements are used to generate a near-field equivalent source representation of the wireless device. Specific absorption rate over, e.g., a 1 g/10 g mass may then be calculated by performing electromagnetic simulations using the near-field equivalent source representation. In an aspect, an elementary dipole array may be used to generate the near-field equivalent source representation from the field measurements.

    Abstract translation: 用于估计无线设备的特定吸收率（SAR）的高效技术。 在一个方面，在无线设备附近的二维（2D）表面上进行电场和/或磁场测量。 场测量用于生成无线设备的近场等效源表示。 然后可以通过使用近场等效源表示进行电磁模拟来计算例如1g / 10g质量的比吸收率。 在一方面，可以使用基本偶极阵列来从场测量生成近场等效源表示。

    REAL-TIME EXPOSURE ASSESSMENT
    22.
    发明申请
    REAL-TIME EXPOSURE ASSESSMENT 有权
    实时曝光评估

    公开(公告)号：US20140274190A1

    公开(公告)日：2014-09-18

    申请号：US13801232

    申请日：2013-03-13

    Applicant: QUALCOMM INCORPORATED

    Inventor： Lin Lu ,  Jagadish Nadakuduti ,  Paul Guckian

    IPC: H04B17/00

    CPC classification number: H04W52/367

    Abstract: 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.

    Abstract translation: 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。

    Evaluating radio frequency (RF) exposure in real time
    23.
    发明授权
    Evaluating radio frequency (RF) exposure in real time 有权

    公开(公告)号：US12213080B2

    公开(公告)日：2025-01-28

    申请号：US18487557

    申请日：2023-10-16

    Applicant: QUALCOMM Incorporated

    Inventor： Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian ,  Mingming Cai ,  Junsheng Han ,  Udara Fernando ,  Raghu Challa

    IPC: H04W52/12 ,  H04B1/3827 ,  H04W52/22

    Abstract: 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.

    Radio frequency (RF) exposure compliance
    25.
    发明授权
    Radio frequency (RF) exposure compliance 有权

    公开(公告)号：US12143938B2

    公开(公告)日：2024-11-12

    申请号：US17454614

    申请日：2021-11-11

    Applicant: QUALCOMM Incorporated

    Inventor： Lin Lu ,  Jagadish Nadakuduti ,  Paul Guckian ,  Reza Shahidi

    IPC: H04W52/22 ,  H04W52/28 ,  H04W52/36

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for determining a transmit power based on a pattern and/or future conditions for a transmission while maintaining radio frequency (RF) exposure compliance. An example method generally includes obtaining a pattern associated with one or more first transmissions, determining a transmit power for one or more second transmissions based at least in part on the pattern and an RF exposure limit, and transmitting the one or more second transmissions at the determined transmit power.

    Evaluating radio frequency (RF) exposure in real time
    27.
    发明授权
    Evaluating radio frequency (RF) exposure in real time 有权

    公开(公告)号：US11792740B2

    公开(公告)日：2023-10-17

    申请号：US17949976

    申请日：2022-09-21

    Applicant: QUALCOMM Incorporated

    Inventor： Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian ,  Mingming Cai ,  Junsheng Han ,  Udara Fernando ,  Raghu Challa

    IPC: H04M1/00 ,  H04W52/22 ,  H04B1/3827 ,  H04W52/12

    CPC classification number: H04W52/225 ,  H04B1/3838 ,  H04W52/12

    Abstract: 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.

    Evaluating radio frequency (RF) exposure in real time
    30.
    发明授权
    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

    Applicant: QUALCOMM Incorporated

    Inventor： Jagadish Nadakuduti ,  Lin Lu ,  Paul Guckian ,  Mingming Cai ,  Junsheng Han ,  Udara Fernando ,  Raghu Challa

    IPC: H04B7/00 ,  H04W52/22 ,  H04W52/12 ,  H04B1/3827

    Abstract: 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.

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