公开(公告)号：US09166680B2

公开(公告)日：2015-10-20

申请号：US14027445

申请日：2013-09-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chun Ju Youn ,  Jong-Hoi Kim ,  Joong-Seon Choe ,  Duk Jun Kim ,  Yong-Hwan Kwon ,  Eun Soo Nam

IPC: H04B10/073 ,  H04B10/61 ,  H04L27/22 ,  H04L27/36 ,  H04L27/00

CPC classification number: H04B10/0731 ,  H04B10/613 ,  H04L27/223 ,  H04L27/364 ,  H04L2027/0083

Abstract: Provided is an apparatus and method for measuring IQ imbalance, and in particular, is an apparatus and method for measuring IQ imbalance for an optical receiver. The apparatus for measuring IQ imbalance for an optical receiver includes a light generating unit generating optical and reference signals to provide the optical and reference signals to an optical receiver, a graph creating unit creating a Lissajous figure by using an in-phase (I) signal and a quadrature-phase (Q) signal output from the optical receiver in response to the optical and reference signals, and a calculating unit calculating IQ imbalance for the optical receiver with reference to the Lissajous figure.

Abstract translation: 提供了一种用于测量IQ不平衡的装置和方法，特别是用于测量光接收机的IQ不平衡的装置和方法。 用于测量光接收机的IQ不平衡的装置包括产生光学和参考信号以向光学接收器提供光学参考信号的光产生单元，通过使用同相（I）信号产生李萨如图的图形创建单元 以及响应于光学参考信号从光学接收器输出的正交相位（Q）信号，以及计算单元，参考利萨如图来计算光学接收机的IQ不平衡。

公开(公告)号：US20140240691A1

公开(公告)日：2014-08-28

申请号：US13916250

申请日：2013-06-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bongki MHEEN ,  MyoungSook Oh ,  Kisoo Kim ,  Jae-Sik Sim ,  Yong-Hwan Kwon ,  Eun Soo Nam

IPC: G01S17/89

CPC classification number: G01S17/89 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/4863

Abstract: Disclosed are a laser radar system and a method for acquiring an image of a target, and the laser radar system includes: a beam source to emit the laser beam; a beam deflector disposed between the beam source and the target, and configured to deflect the laser beam emitted from the beam source in a scanning direction of the target as time elapses; and an optical detector configured to detect the laser beam reflected from the target, which is provided a plurality of beam spots having a diameter DRBS; and a receiving optical system disposed between the target and the optical detector and configured to converge the laser beam reflected from the target, and the optical detector includes a detecting area having a diameter DDA that satisfies an equation of √{square root over (/2)}×PRBS+2×DRBS≦DDA≦2×Dlens and an equation of (4/π)×λ×F_number

Abstract translation: 公开了一种用于获取目标图像的激光雷达系统和方法，并且激光雷达系统包括：发射激光束的光束源; 光束偏转器，设置在所述光束源和所述目标之间，并且被配置为随着时间的过去使从所述光束源发射的激光束沿所述目标的扫描方向偏转; 以及光检测器，被配置为检测从所述目标物反射的激光束，所述激光束设置有多个具有直径DRBS的光束点; 以及接收光学系统，设置在所述目标和所述光学检测器之间并且被配置为会聚从所述目标物反射的所述激光束，并且所述光学检测器包括具有直径DDA的检测区域，所述检测区域满足以下等式：√{平方根超过（/ 2 ）}×PRBS + 2×DRBS＆nlE; DDA＆nlE; 2×Dlens和（4 /＆pgr;）×λ×F_number

公开(公告)号：US09234964B2

公开(公告)日：2016-01-12

申请号：US13916250

申请日：2013-06-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bongki Mheen ,  MyoungSook Oh ,  Kisoo Kim ,  Jae-Sik Sim ,  Yong-Hwan Kwon ,  Eun Soo Nam

IPC: G01C3/08 ,  G01S17/89 ,  G01S7/481 ,  G01S7/484 ,  G01S7/486

CPC classification number: G01S17/89 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/4863

Abstract: Disclosed are a laser radar system and a method for acquiring an image of a target, and the laser radar system includes: a beam source to emit the laser beam; a beam deflector disposed between the beam source and the target, and configured to deflect the laser beam emitted from the beam source in a scanning direction of the target as time elapses; and an optical detector configured to detect the laser beam reflected from the target, which is provided a plurality of beam spots having a diameter DRBS; and a receiving optical system disposed between the target and the optical detector and configured to converge the laser beam reflected from the target, and the optical detector includes a detecting area having a diameter DDA that satisfies an equation of √{square root over (2)}×PRBS+2×DRBS≦DDA≦2×Dlens and an equation of (4/π)×λ×F_number

Abstract translation: 公开了一种用于获取目标图像的激光雷达系统和方法，并且激光雷达系统包括：发射激光束的光束源; 光束偏转器，设置在所述光束源和所述目标之间，并且被配置为随着时间的过去使从所述光束源发射的激光束沿所述目标的扫描方向偏转; 以及光检测器，被配置为检测从所述目标物反射的激光束，所述激光束设置有多个具有直径DRBS的光束点; 以及接收光学系统，其设置在所述目标和所述光学检测器之间并且被配置为会聚从所述目标物反射的所述激光束，并且所述光学检测器包括检测区域，所述检测区域具有满足方程式（2）的直径DDA， }×PRBS + 2×DRBS＆nlE; DDA＆nlE; 2×Dlens和（4 /＆pgr;）×λ×F_number

公开(公告)号：US09031421B2

公开(公告)日：2015-05-12

申请号：US13934589

申请日：2013-07-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joong-Seon Choe ,  Chun Ju Youn ,  Jong-Hoi Kim ,  Duk Jun Kim ,  Yong-Hwan Kwon ,  Kwang-Seong Choi ,  Eun Soo Nam

IPC: H04B10/06 ,  H04B10/077

CPC classification number: H04B10/0779

Abstract: Provided is a method of measuring signal transmission time difference of a measuring device. The measuring device according to embodiments, by measuring a skew on two optical paths through signal delays of sufficient sizes for skew measurement on the optical paths, even a skew having a minute size can be measured within a measurable range.

Abstract translation: 提供了测量装置的信号传输时间差的测量方法。 根据实施例的测量装置可以在可测量的范围内测量通过在光路上经过足够尺寸的信号延迟的信号延迟测量两个光路上的偏斜测量，甚至具有微小尺寸的偏斜。

公开(公告)号：US10134854B2

公开(公告)日：2018-11-20

申请号：US15248676

申请日：2016-08-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ho Kyun Ahn ,  Dong Min Kang ,  Yong-Hwan Kwon ,  Dong-Young Kim ,  Seong Il Kim ,  Hae Cheon Kim ,  Eun Soo Nam ,  Jae Won Do ,  Byoung-Gue Min ,  Hyung Sup Yoon ,  Sang-Heung Lee ,  Jong Min Lee ,  Jong-Won Lim ,  Hyun Wook Jung ,  Kyu Jun Cho

IPC: H01L29/40 ,  H01L29/20 ,  H01L29/205 ,  H01L29/778 ,  H01L29/66

Abstract: A high electron mobility transistor includes a substrate including a first surface and a second surface facing each other and having a via hole passing through the first surface and the second surface, an active layer on the first surface, a cap layer on the active layer and including a gate recess region exposing a portion of the active layer, a source electrode and a drain electrode on one of the cap layer and the active layer, an insulating layer on the source electrode and the drain electrode and having on opening corresponding to the gate recess region to expose the gate recess region, a first field electrode on the insulating layer, a gate electrode electrically connected to the first field electrode on the insulating layer, and a second field electrode on the second surface and contacting the active layer through the via hole.

公开(公告)号：US08929731B2

公开(公告)日：2015-01-06

申请号：US13687741

申请日：2012-11-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chun Ju Youn ,  Joong-Seon Choe ,  Jong-Hoi Kim ,  Duk Jun Kim ,  Yong-Hwan Kwon ,  Eun Soo Nam

IPC: H04B10/08 ,  H04B17/00 ,  H04B10/06 ,  H04B10/61 ,  H04B10/079

CPC classification number: H04B10/614 ,  H04B10/0799

Abstract: An apparatus for measuring performance of a coherent optical receiver includes a beam splitter splitting light into first and second paths, a first optical modulator modulating the first path light, a variable optical attenuator controlling an optical power of the first optical modulator, a first polarization controller transmitting a signal controlling polarization of an output of the variable optical attenuator to the coherent optical receiver, a second optical modulator modulating the second path light, a variable optical delay line delaying time of an output of the second optical modulator, a second polarization controller transmitting a signal controlling polarization of an output of the variable optical delay line to the coherent optical receiver, a network analyzer measuring performance of the coherent optical receiver and controlling the optical modulators, and a controller transmitting a control signal to the optical modulators.

Abstract translation: 一种用于测量相干光接收机性能的装置，包括将光分成第一和第二路径的光束分配器，调制第一路径光的第一光调制器，控制第一光调制器的光功率的可变光衰减器，第一偏振控制器 将所述可变光衰减器的输出的偏振信号控制到所述相干光接收器，调制所述第二路径光的第二光调制器，所述第二光调制器的输出的可变光延迟线延迟时间，第二偏振控制器发送 控制可变光延迟线到相干光接收机的输出的偏振的信号，测量相干光接收机的性能并控制光调制器的网络分析仪，以及向光调制器发送控制信号的控制器。