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公开(公告)号：US10707974B1
公开(公告)日：2020-07-07
申请号：US16600579
申请日：2019-10-14
Applicant: Industrial Technology Research Institute
Inventor： Jan-Shin Ho , Shih-Hao Fang , Jen-Yuan Hsu , Jia-Ming Chen
Abstract: The disclosure provides a transceiver of a communication system using hybrid beamforming and performing an antenna calibration method. In an exemplary embodiment in accordance with the disclosure, the transceiver may generate a plurality of scrambling sequences. The transceiver may comprise a plurality of coupling circuits to receive a feedback signal. The transceiver may use the plurality of scrambling sequences to recover the transmit signals output by the antenna elements from the feedback signal. Thus, the transmitter may perform antenna calibration for each antenna element.
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公开(公告)号：US20190190574A1
公开(公告)日：2019-06-20
申请号：US15847941
申请日：2017-12-20
Applicant: Industrial Technology Research Institute
Inventor： Chih-Yu Chen , Hsien-Wen Chang , Jen-Yuan Hsu , Jan-Shin Ho
CPC classification number: H04B7/0482 , H04B7/0617
Abstract: A wireless communication device with hybrid beamforming and a control method thereof are provided. The wireless communication device includes a plurality of antennas, a beamforming digital circuit, a plurality of radio frequency (RF) chains, a beamforming analog circuit, a controller and a storage. The RF chains receive signals processed by the beamforming digital circuit to generate antenna signals. The RF chains are connected to a part or all of the antennas through the beamforming analog circuit to transmit the antenna signal to the corresponding antennas. The number of the RF chains is smaller than the number of the antennas. The storage stores a plurality of candidate analog codebooks. The controller selects one of the candidate analog codebooks as a selected analog codebook according to scenario or environmental information, and adjusts the beamforming analog circuit according to the selected analog codebook.
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