公开(公告)号：US10334663B2

公开(公告)日：2019-06-25

申请号：US15785921

申请日：2017-10-17

Applicant: SOLiD, INC.

Inventor： Hwansun Lee

IPC: H04W88/08 ,  H04B1/00 ,  H04B1/40 ,  H04B1/3888

Abstract: A signal processing device according to an exemplary embodiment of the inventive concept can integrate a power amplifier, a duplexer, and a linearizer as a module to improve the convenience of management and to improve flexibility and extensibility so as to be transformable corresponding to a change in system development concept.

公开(公告)号：US10333481B2

公开(公告)日：2019-06-25

申请号：US15538529

申请日：2015-12-21

Applicant: SOLiD, INC.

Inventor： Hwansun Lee

IPC: H03G3/30 ,  H03F3/68 ,  H03F3/189 ,  H03F1/32

Abstract: According to one mode of the inventive concept, an amplification device includes a first amplifier configured to amplify an input multi-band signal to a first level, a separating unit configured to separate the multi-band signal having the first level into a first band signal and a second band signal, and a second amplifier configured to amplify the second band signal to a second level.

公开(公告)号：US10530313B2

公开(公告)日：2020-01-07

申请号：US15540668

申请日：2015-12-30

Applicant: SOLiD, INC.

Inventor： Hwansun Lee ,  Jitaek Park

IPC: H03F1/14 ,  H03F1/52 ,  H03F3/68 ,  H03F1/02

Abstract: According to one mode of the inventive concept, an amplification device includes a first amplification unit configured to amplify an input signal when a power level of the input signal is within a first range, a second amplification unit configured to amplify the input signal when the power level of the input signal is within a second range, and an abnormality sensing unit configured to sense an occurrence of an abnormality in the second amplification unit. The abnormality sensing unit senses reverse power regarding an output of the second amplification unit to generate a sensed voltage and compares the sensed voltage with a reference voltage to sense whether an abnormality occurs in the second amplification unit.

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.

公开(公告)号：US09826573B2

公开(公告)日：2017-11-21

申请号：US15395720

申请日：2016-12-30

Applicant: SOLiD, INC.

Inventor： Hwansun Lee

IPC: H04W88/08 ,  H04B1/40

CPC classification number: H04W88/085 ,  H04B1/00 ,  H04B1/3888 ,  H04B1/40

Abstract: A signal processing device according to an exemplary embodiment of the inventive concept can integrate a power amplifier, a duplexer, and a linearizer as a module to improve the convenience of management and to improve flexibility and extensibility so as to be transformable corresponding to a change in system development concept.

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.