公开(公告)号：US10700437B2

公开(公告)日：2020-06-30

申请号：US16100765

申请日：2018-08-10

Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Ho-Jin Song ,  Wonbin Hong ,  Yoonyoung Chung ,  Sungmin Cho

IPC: H01Q15/04 ,  H01Q3/26 ,  H01Q3/46 ,  H01Q19/06 ,  H01Q15/12

Abstract: A communication device for controlling a beam in a wireless communication system and a method therefor are provided. The communication device includes a lens including at least one layer in which unit cells are disposed, at least one processor configured to determine a beam pattern and control capacitance of each of the unit cells based on the beam pattern, and a transceiver for transmitting a signal in the determined beam pattern through the lens, which is capacitance-controlled. Each unit cell includes a first conductive member, a second conductive member overlapping at least a portion of the first conductive member, and spaced apart from the first conductive member, and a dielectric interposed between the overlapped portions of the first conductive member and the second conductive member. An overlap region of the first and second conductive members is arranged in a direction shielded from an external electromagnetic wave.

公开(公告)号：US11785370B2

公开(公告)日：2023-10-10

申请号：US16973405

申请日：2019-03-08

Applicant: CENTER FOR ADVANCED SOFT ELECTRONICS ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Kilwon Cho ,  Siyoung Lee ,  Yoonyoung Chung

IPC: H04R1/08 ,  H04R31/00 ,  H04R1/40 ,  H04R3/00 ,  H04R7/04 ,  H04R7/16 ,  G10L25/78 ,  H04R1/14

CPC classification number: H04R1/083 ,  G10L25/78 ,  H04R1/14 ,  H04R1/406 ,  H04R3/005 ,  H04R7/04 ,  H04R7/16 ,  H04R31/003 ,  H04R31/006 ,  H04R2307/025

Abstract: Proposed is a vibration sensor including: a substrate; a first electrode positioned on the substrate; a support positioned on the first electrode and including a cylindrical hollow hole; and a diaphragm including a thin film positioned on the support and a second electrode positioned on the thin film. According to the present disclosure, it is possible to manufacture a skin-attachable vibration sensor that is attached to a user's neck to detect vibration acceleration in user's neck skin, thus exhibiting a uniform and high sensitivity to a user's voice over the frequency range of the human voice. In addition, the sensor sensitively detects a user's voice through neck skin vibrations rather than through air, thus being free from the influence of external noise or wind, and can recognize the user's voice even in a situation where a user's mouth is covered.