公开(公告)号：US09031119B2

公开(公告)日：2015-05-12

申请号：US13778572

申请日：2013-02-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Won Kim ,  Byung Jang Jeong

IPC: H04B1/40

CPC classification number: H04B1/403

Abstract: A wideband transmitting and receiving apparatus including a local oscillator (LO) synthesizer providing a constant output to a wide band is provided. The LO synthesizer may generate LO signals of different amplitudes according to channels. The LO synthesizer may store the amplitudes of the LO signals different according to the channels and compensate the amplitudes of the LO signals using the stored amplitudes. Accordingly, the LO synthesizer may output the LO signals of uniform amplitudes irrespective of the channels.

Abstract translation: 提供一种包括向宽带提供恒定输出的本地振荡器（LO）合成器的宽带发送和接收装置。 LO合成器可以根据信道产生不同幅度的LO信号。 LO合成器可以根据信道存储LO信号的幅度不同，并使用所存储的幅度来补偿LO信号的振幅。 因此，LO合成器可以输出均匀振幅的LO信号，而与通道无关。

公开(公告)号：US11782107B2

公开(公告)日：2023-10-10

申请号：US17538288

申请日：2021-11-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Joon Lee ,  Jang Yeol Kim ,  Jae Woo Lee ,  In Kui Cho ,  Sang Won Kim ,  Seong Min Kim ,  Jung Ick Moon ,  Je Hoon Yun ,  Dong Won Jang

IPC: G01R33/26

CPC classification number: G01R33/26

Abstract: An atomic magnetometer, which operates in a communication system using a magnetic signal in a very low frequency (VLF) band, may comprise: a vapor cell comprising one or more alkaline metal atoms; a pump light source configured to provide circularly polarized pump beams to the vapor cell; an irradiation light source configured to provide linearly polarized irradiation beams to the vapor cell; a magnetic signal detecting unit configured to detect a magnetic signal by measuring a polarization rotation angle from the linearly polarized irradiation beam passing through the vapor cell; and a bias magnetic field control unit configured to control a bias magnetic field applied to the vapor cell.

公开(公告)号：US11677272B2

公开(公告)日：2023-06-13

申请号：US17509277

申请日：2021-10-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Je Hoon Yun ,  Sang Won Kim ,  Seong Min Kim ,  Jung Ick Moon ,  Woo Jin Byun ,  Dong Won Jang ,  In Kui Cho

IPC: H02J50/12 ,  H01F38/14 ,  H02J50/40

CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J50/402

Abstract: A wireless power transmitting device includes: an upper coil including a first tubular spiral coil and a first planar spiral coil disposed beneath the first tubular spiral coil; a lower coil including a second planar spiral coil disposed to face the first planar spiral coil and a second tubular spiral coil disposed beneath the second planar spiral coil; a connecting stub configured to connect the upper coil and the lower coil to each other; and a power source configured to supply a power to the upper coil or the lower coil. The first planar spiral coil and the second planar spiral coil generate an electric field and a magnetic field in a resonance state to transfer at least some of the power from the power source to an external wireless power receiving device through the electric field and the magnetic field.

公开(公告)号：US11804874B2

公开(公告)日：2023-10-31

申请号：US17734286

申请日：2022-05-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： In Kui Cho ,  Jang Yeol Kim ,  Jung Hoon Oh ,  Jae Woo Lee ,  Jae Ho Lee ,  Hyun Joon Lee ,  Sang Won Kim ,  Seong Min Kim ,  Jung Ick Moon ,  Woo Jin Byun ,  Je Hoon Yun

IPC: H04B5/00

CPC classification number: H04B5/0031 ,  H04B5/0081 ,  H04B5/0087

Abstract: An antenna device for magnetic field communication may include: a first coil; a second coil; a third coil; a first capacitor connected to a 1-1 terminal of the first coil; a second capacitor connected to a 2-1 terminal of the second coil; a third capacitor connected to a 3-1 terminal of the third coil; and an input port including a first input terminal connected to a 1-2 terminal of the first coil, a 2-2 terminal of the second coil, and a 3-2 terminal of the third coil, and a second input terminal connected to the first capacitor, the second capacitor, and the third capacitor.

公开(公告)号：US09571316B2

公开(公告)日：2017-02-14

申请号：US15007755

申请日：2016-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chung Sup Kim ,  Kang Hee Kim ,  Ki Cheol Tae ,  Sang Won Kim ,  Heung Yong Kang ,  Yong Seok Choi

IPC: H04L27/148

CPC classification number: H04L27/148 ,  H04L27/265

Abstract: Provided herein is a method and apparatus for realizing a frequency-spatial filter with variable bandwidth, the method including generating M number of FFT channel blocks having N number of channels by performing an N point FFT (Fast Fourier Transform) processing using M number of array antenna inputs; combining some of the N number of channels of each FFT channel block according to a frequency bandwidth variable parameter value; combining some of spatial response vector channels in a combined channel of each FFT channel block according to a spatial bandwidth variable parameter value; and combining all the channels and outputting the same.

Abstract translation: 本文提供了一种用于实现具有可变带宽的频率 - 空间滤波器的方法和装置，该方法包括通过使用M个数组阵列执行N点FFT（快速傅里叶变换）处理来产生具有N个信道数的M个FFT信道块 天线输入; 根据频率带宽可变参数值组合每个FFT通道块的N个通道中的一些; 根据空间带宽可变参数值，在每个FFT通道块的组合通道中组合一些空间响应矢量通道; 并组合所有通道并输出相同的通道。