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公开(公告)号：WO2022039883A1
公开(公告)日：2022-02-24
申请号：PCT/US2021/042765
申请日：2021-07-22
Applicant: QUALCOMM INCORPORATED
Inventor： KING, Jay , DOROSENCO, Alexander , ABDELGHAFFAR, Muhammad Sayed Khairy , SORIAGA, Joseph Binamira , HARDIN, Carl , MANOLAKOS, Alexandros , KRYSL, James , KONGELF, Michael Allen , MUKKAVILLI, Krishna Kiran , JI, Tingfang , BURKE, Joseph Patrick
Abstract: The transmission and reception group delay in a front end structure of a mobile device may be determined using closed loop calibration. The closed loop may be a near field radiated closed loop between pairs of antennas in an antenna array of the mobile device. The delay based on time of transmission and time of reception may be measured for a plurality of pairs of antennas, from which the transmit and receive group delay within a single path may be determined. The propagation delay of the signal between antennas may be included in the group delay calibration for increased accuracy. In another implementation, a conducted closed loop in the transceiver or in a radio frequency switching network may be used to calibrate the group delay. Precharacterization of the delay caused by components between the closed loop and antennas may be included in the group delay calibration for increased accuracy.
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公开(公告)号：EP4197130A1
公开(公告)日：2023-06-21
申请号：EP21762844.5
申请日：2021-07-22
Applicant: QUALCOMM INCORPORATED
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