TERAHERTZ SPECTROSCOPY AND IMAGING IN DYNAMIC ENVIRONMENTS WITH SPECTRAL RESPONSE ENHANCEMENTS

    公开(公告)号:US20210041293A1

    公开(公告)日:2021-02-11

    申请号:US16536245

    申请日:2019-08-08

    Applicant: Apple Inc.

    Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a method comprises emitting a continuous electromagnetic (EM) wave in a terahertz (THz) frequency band into a dynamic environment. The EM THz wave is reflected off an object in the environment. A spectral response of a received signal indicative of the reflected EM wave is determined that includes absorption spectra at a frequency in the THz frequency band. The absorption spectra is indicative of a transmission medium in the environment. The spectral response of the received signal is compensated for fixed and frequency-specific losses. The compensated absorption spectra is compared with known absorption spectra of target transmission mediums. Based on results of the comparing, a particular target transmission medium is identified as being the transmission medium in the environment. The absorption spectra loss is used to determine a concentration level of the target transmission medium.

    Dynamic adjustment of transmission parameters

    公开(公告)号:US11601897B2

    公开(公告)日:2023-03-07

    申请号:US16887832

    申请日:2020-05-29

    Applicant: Apple Inc.

    Abstract: Manners of complying with SAR limits at a user equipment (UE) configured to establish a first communication connection using a first radio and a second communication connection using a second radio. The UE determines that a first application associated with the first communication connection is to be prioritized over a second application associated with the second communication connection, determines a specific absorption rate (SAR) value associated with the UE and modifies, responsive to the SAR value associated with the UE, a parameter associated with the first radio or the second radio based on at least the priority of the first application relative to the second application.

    Terahertz spectroscopy and imaging in dynamic environments

    公开(公告)号:US11513004B2

    公开(公告)日:2022-11-29

    申请号:US16536233

    申请日:2019-08-08

    Applicant: Apple Inc.

    Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a transmitter of an electronic device emits a continuous electromagnetic (EM) wave in the terahertz (THz) frequency band into a dynamic environment that includes a transmission medium that changes over time. A receiver of the electronic device, receives an EM wave reflected off an object in the environment and determines a spectral response of the reflected EM wave. The spectral response includes absorption spectra at a frequency in the THz frequency band that is indicative of a known target transmission medium. The absorption spectra of the target transmission medium and a path length of the reflected EM wave signal are used to obtain the concentration level of the target transmission medium from a reference library of known concentration levels.

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