公开(公告)号：US11637640B2

公开(公告)日：2023-04-25

申请号：US16948618

申请日：2020-09-25

Applicant: Apple Inc.

Inventor： Kai Bai ,  Wassim El-Hassan ,  Linchao Liao ,  Ding Nie

IPC: H04B17/14 ,  H04B7/06 ,  H04B17/19 ,  H04B17/11 ,  H04B17/21

Abstract: A user equipment (UE) configured to perform self-calibration. The UE includes a first radio configured to perform implicit beamforming and further configured to transmit and receive signals during the calibration procedure. The UE further includes a first plurality of antennas communicatively coupled to the first radio, a second radio configured to transmit and receive signals during the calibration procedure and at least one second antenna communicatively coupled to the second radio. The calibration procedure includes the second radio transmitting a tone signal over the calibration frequency and a first antenna of the first radio receiving the tone signal and a second antenna of the first radio receiving the tone signal.