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公开(公告)号：US09859982B2
公开(公告)日：2018-01-02
申请号：US15426418
申请日：2017-02-07
Applicant: SOLID, INC.
Inventor： Yeongshin Yeo , Hwansun Lee , Youngju You
IPC: H04J14/00 , H04B10/2575 , H04B10/40 , H04B7/022
CPC classification number: H04B10/25753 , H04B7/022 , H04B10/40
Abstract: A distributed antenna system includes a headend device for generating a downlink transmission signal by combining a plurality of downlink RF signals in different frequency bands, received from a plurality of base stations, and converting the downlink transmission signal into a downlink optical signal, a main remote device for receiving the downlink optical signal from the headend device, converting the downlink optical signal into the downlink transmission signal, and amplifying the plurality of downlink RF signals included in the downlink transmission signal, and a sub-remote device for receiving the downlink transmission signal distributed from the main remote device, and amplifying the plurality of downlink RF signals included in the received downlink transmission signal.
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公开(公告)号：US10090941B2
公开(公告)日：2018-10-02
申请号：US15501002
申请日：2015-12-04
Applicant: SOLiD, INC.
Inventor： Youngju You
Abstract: A remote apparatus includes: a plurality of sub amplification units amplifying radio frequency (RF) signals of different frequency bands, respectively; a test signal generation unit generating test signals of a frequency band for any one sub amplification unit among the plurality of sub amplification units; a conversion unit converting intermodulation (IM) signals generated in response to the test signals into a plurality of conversion IM signals by using a conversion signal of which a frequency is swept; and a control unit determining a degree of an intermodulation distortion by the any one sub amplification unit based on signal levels of the plurality of the conversion IM signals.
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公开(公告)号：US10516492B2
公开(公告)日：2019-12-24
申请号：US16127591
申请日：2018-09-11
Applicant: SOLiD, INC.
Inventor： Youngju You
Abstract: A remote apparatus includes: a plurality of sub amplification units amplifying radio frequency (RF) signals of different frequency bands, respectively; a test signal generation unit generating test signals of a frequency band for any one sub amplification unit among the plurality of sub amplification units; a conversion unit converting intermodulation (IM) signals generated in response to the test signals into a plurality of conversion IM signals by using a conversion signal of which a frequency is swept; and a control unit determining a degree of an intermodulation distortion by the any one sub amplification unit based on signal levels of the plurality of the conversion IM signals.
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公开(公告)号：US09602211B2
公开(公告)日：2017-03-21
申请号：US15079783
申请日：2016-03-24
Applicant: SOLiD, INC.
Inventor： Yeongshin Yeo , Hwansun Lee , Youngju You
IPC: H04B10/00 , H04B10/2575
CPC classification number: H04B10/25753 , H04B7/022 , H04B10/40
Abstract: A distributed antenna system includes a headend device for generating a downlink transmission signal by combining a plurality of downlink RF signals in different frequency bands, received from a plurality of base stations, and converting the downlink transmission signal into a downlink optical signal, a main remote device for receiving the downlink optical signal from the headend device, converting the downlink optical signal into the downlink transmission signal, and amplifying the plurality of downlink RF signals included in the downlink transmission signal, and a sub-remote device for receiving the downlink transmission signal distributed from the main remote device, and amplifying the plurality of downlink RF signals included in the received downlink transmission signal.
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