公开(公告)号：US20230420823A1

公开(公告)日：2023-12-28

申请号：US18107883

申请日：2023-02-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dong-Uk SIM ,  Sangil KWAK ,  Seung Keun PARK ,  Hyeyeon KWON

IPC: H01Q1/22 ,  G01R29/08 ,  H01Q1/12 ,  H02K7/075

CPC classification number: H01Q1/22 ,  G01R29/0878 ,  G01R29/0814 ,  H01Q1/125 ,  H02K7/075

Abstract: Provided is a mode stirring device. The mode stirring device includes a transmission antenna configured to output a wireless signal to measure wireless performance in an electromagnetic (EM) wave reverberation chamber, an antenna connection bar having one end coupled to a lower end of the transmission antenna, a crankshaft connected to another end of the antenna connection bar, and a motor configured to change a position of the transmission antenna by rotating the crankshaft.

公开(公告)号：US20150017926A1

公开(公告)日：2015-01-15

申请号：US14489135

申请日：2014-09-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyeyeon KWON ,  Kyung Yul CHEON ,  Mi Jeong YANG ,  Aesoon PARK

IPC: H04W24/04 ,  H04W52/00

CPC classification number: H04W24/04 ,  G01R31/3689 ,  H04W52/00

Abstract: Provided is a machine type communication system including a machine type communication device operating with a battery. The machine type communication system may monitor a residual power of the battery supplying power to the machine type communication device, and may output the monitored residual power to a device of a manager that manages the machine type communication device. Also, a point in time when the residual power of the battery is to be monitored may be determined based on the residual power.

Abstract translation: 提供一种包括与电池一起操作的机器型通信装置的机器型通信系统。 机器型通信系统可以监视向机器型通信设备供电的剩余电力，并且可以将监视的​​剩余电力输出到管理机器类型通信设备的管理器的设备。 此外，可以基于剩余功率来确定要监视电池的剩余功率的时间点。

公开(公告)号：US20240429970A1

公开(公告)日：2024-12-26

申请号：US18679853

申请日：2024-05-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dongho KIM ,  Seung Keun PARK ,  Sang il KWAK ,  Hyeyeon KWON ,  Dong-Uk SIM ,  jeongwoo HUR ,  seong ju KIM ,  Hanjun MAENG

IPC: H04B7/04 ,  H04B7/06

Abstract: A signal conversion method and device for generating a modulation signal are provided. The signal conversion method includes receiving an input signal and a reflection coefficient of a reconfigurable intelligent surface (RIS) according to a sample time, selecting an optimized reflection coefficient of the RIS corresponding to the sample time, and generating the modulation signal by applying the optimized reflection coefficient of the RIS to the input signal.

公开(公告)号：US20230384360A1

公开(公告)日：2023-11-30

申请号：US18120213

申请日：2023-03-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong-Uk SIM ,  Sangil KWAK ,  Seung Keun PARK ,  Hyeyeon KWON

IPC: G01R31/28 ,  H04B17/00

CPC classification number: G01R31/2822 ,  H04B17/0085

Abstract: Provided is a wireless channel reproduction device having a structure of an reverberation chamber. More specifically, the wireless channel reproduction device may minimize a measurement uncertainty by satisfying recommendations on spatial uniformity or field uniformity of a working volume and may be designed as an internal structure of an reverberation chamber including a plurality of mode agitators.