公开(公告)号：EP3827517A1

公开(公告)日：2021-06-02

申请号：EP19903804.3

申请日：2019-12-23

申请人： Samsung Electronics Co., Ltd.

发明人： KIM, Kihyun ,  PARK, Hyunchul ,  AN, Kyuhwan ,  JANG, Jaesik ,  CHO, Yunsung

IPC分类号： H03F1/02 ,  H03F1/22 ,  H03F1/56

公开(公告)号：EP4047820A1

公开(公告)日：2022-08-24

申请号：EP20877033.9

申请日：2020-10-16

申请人： Samsung Electronics Co., Ltd.

发明人： MINN, Donggyu ,  YOON, Youngchang ,  KANG, Daehyun ,  AN, Kyuhwan

IPC分类号： H03H11/28 ,  H03H11/40 ,  H03H1/00

摘要： The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as Long-Term Evolution (LTE). The present disclosure provides a device for variable signal attenuation equipped in a stack-up structure inside an RFIC. The device for signal attenuation comprises: a first transmission line positioned on a first layer inside the RFIC; a second transmission line positioned on a second layer, which is adjacent to the first layer, and electromagnetically coupled to the first transmission line; and a control unit. The first transmission line comprises an impedance control unit on one side. The control unit can variably control the impedance control unit.

公开(公告)号：EP3864750A1

公开(公告)日：2021-08-18

申请号：EP20738913.1

申请日：2020-01-06

申请人： Samsung Electronics Co., Ltd.

发明人： KIM, Jihoon ,  YOON, Youngchang ,  AN, Kyuhwan ,  LEE, Sangho

IPC分类号： H03F1/32 ,  H03F1/56