• Journal of the Korea Society of Computer and Information
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• v.6 no.1
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• pp.51-59
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• 2001

In this paper, performance of the double circular array antenna was analyzed, which has sharp directivity with specific direction and is compatible to shape pencil beam. The character of each array geometry which N numbers of isotropic point source is arranged in planar with type of a square, circular and double circular was compared and analyzed. As a result, we fined that double circular geometry was good performance rather than square and circular array geometry in the point of directivity. SLL and HPBW.

• Annual Conference on Human and Language Technology
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• 1995.10a
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• pp.233-239
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• 1995

기존의 이중언어정보 처리 모형을 기억 모형과 상호 작용 모형으로 나누고 기억모형은 다시 발달적 관점을 지닌 모형과 개념 표상과의 관계 구조에 촛점을 둔 모형으로 분류하여 개관하였다. 이중 언어 정보 처리 과정에 관한 이상적인 모형은 심성 어휘집의 관계 구조. 언어이해와 산출의 자동성, 두 언어 체계간의 작용에 관하여 설명할 수 있어야 한다. 이러한 관점에서 지금까지 개관된 모형을 비판하였다. 일부 모형에서는 위의 가정들을 언급하고 있으나 대부분의 모형들이 각각의 가정을 체계적으로 반영하고 있지 않았다. 비판점들을 보완하여 한국인에게 적합한 외국어 교육 프로그램을 개발하고 한국어-영어 번역시스템의 효과적인 운용과 일반적인 언어 정보 처리 기제에 대한 이해를 돕기 위한 새로운 이중 언어 모형을 제안하였다.

• Journal of the Korean Magnetics Society
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• v.27 no.4
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• pp.115-122
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• 2017

The antiferromagnet IrMn based four different GMR-SV multilayers on Corning glass were prepared by using ion beam deposition and DC magnetron sputtering system. The magnetoresistance (MR) properties for single-type and dual-type GMR-SV multilayer films were investigated through the measured major and minor MR curves. The exchange bias coupling field ($H_{ex}$) and coercivity ($H_c$) of pinned layer, the $H_c$ and interlayer exchange coupling field ($H_{int}$) of free layer for the dual-type structure GMR-SV multilayer films consisted of top IrMn layer were 410 Oe, 60 Oe, 1.6 Oe, and 7.0 Oe, respectively. The minor MR curve of two free layers was performed the squarelike feature having a MR ratio of 8.7 % as the sum of 3.7 % and 5.0 %. The value of average magnetic field sensitivity (MS) was maintained at 2.0 %/Oe. Also, the magnetoresistance properties of the single-type and dual-type structure GMR-SV multilayer films consisted of bottom IrMn layer were decreased more than those of top IrMn layer. Two antiparallel states of magnetization spin arrays of the pinned and free layers in the dual-type GMR-SV multilayer films occurred the maximum MR value by the effect of spin dependence scattering.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.26 no.5
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• pp.463-470
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• 2015

In this paper, a new dual-band bandpass filter(BPF) that has resonators and feed lines with Stepped-Impedance Resonator(SIR) structures is proposed. Feed lines with SIR structure provide maximum magnetic field points which occur at the same locations of the input and output feed lines, so the insertion loss of BPF was reduced. Applying the SIR structure to the BPF for the first passband improves rejection characteristics between the first passband and the second passband. It reduces the coupling between the BPF for the first passband and the BPF for the second passband, so it makes the dual-band BPF more compact. The proposed design method provides independent changes of both the center frequency and the bandwidth for each resonator, and also improves filtering characteristics. The validity of the proposed design method is confirmed by comparisons between the designed parameters and the measured results satisfying WLAN specifications.

• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.146-155
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• 2012

This study made an attempt to apply and meaningful research of the analysis of the scene with the actual creative work about the contradictory structure and the love of duality appeared in the Shakespeare's "Romeo and Juliet". The researcher set up the meaning of versus (對) between the contradictory structure and the duality of love. So I analyzed the duality of love appeared on the creative performance named "Romiet & Julio zwei Versus". With the Laban's behavior analysis, the analyzing instruments were separated into four parts as the body, the effort, the space and the shape. As a result of the analyzing, the duality of love in the original work was the expression of the artist's pluralistic vision, and dramatic structure of homogeneity rather than the paradoxical contrast. After analyzing a creative work, the duality of love has been proven as an important factor with ultimately a new dimension of absolute balance.

• Journal of IKEEE
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• v.15 no.2
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• pp.164-170
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• 2011

In this paper, we present a novel Lateral Insulated-Gate Bipolar Transistor(LIGBT) structure. The proposed structure has extra emitter between emitter and collector of the conventional structure. The added emitter can significantly improve latch-up current densities, forward voltage drop (Vce,sat) and turn-off characteristics. From the simulation results, the proposed LIGBT has the lower forward voltage drop(1.05V), the higher latch-up current densities($2.5{\times}10^3\;A/{\mu}m^2$), and the shorter turn-off time(7.4us) than those of the conventional LIGBT.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.42 no.1
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• pp.119-123
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• 2005

In this paper. It is proposed and fabricated that the new antenna of dual T type structure is shifted easily center frequency. This antenna consists of dual dipoles resemblance to dual T type, which are fed by a coplanar waveguide (CPW) on signal plane. The analyzed and measured characteristic of new antenna is controled between distance of two dipoles for shifting center frequency. The proposed antenna is 450MHz bandwidth for using IMT2000 band. The characteristic parameters of the proposed antenna are analyzed by using a FDTD methods.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.3
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• pp.654-659
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• 2011

We propose a novel method to reduce laser chirp and improve modulation performance in semiconductor laser by using dual-electrode structure. Dual-electrode structure is realized by segmenting a electrode on top of gain medium, as was the case of edge emitting laser diode, into electrically isolated two electrodes. By using the proposed structure, we have experimentally achieved a reduction of laser spectral width of 0.23 nm and an improvement of 2.5-dB receiver sensitivity at an 80-km fiber transmission for 10-Gbps NRZ (non-return-to zero) data stream.

• Proceedings of the KIEE Conference
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• 1999.07b
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• pp.865-867
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• 1999

본 논문은 국산 개발 분산제어시스템의 신뢰성을 향상시키기 위하여 Power Supply System, Control Processor, Communication System에 대한 이중화 구조를 분석하고 외국 시스템과의 비교를 통해 국산 시스템의 미비점을 파악하고 이를 개선하기 위한 이중화 구조 설계 방안을 제시하고자 한다.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2002.11a
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• pp.268-272
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• 2002

슬롯이 있는 직사각형 마이크로스트립 안테나의 이중주파수 동작 특성을 연구하였다. 마이크로스트립 안테나의 급전방식은 전자기적으로 결합된 단일 마이크로스트립 안테나이며, 패치구조는 직사각형 패치의 대각선 방향에 "ㄱ"형 슬롯을 대칭으로 배치시켰다. 본 논문에서 제안된 "ㄱ"형 슬롯의 장점으로는 패치의 크기를 줄이는 효과와 동시에 이중 대역의 주파수를 갖는 것으로 확인되었다. 제안된 마이크로스트립 안테나의 반사손실은 S11에서 -10 dB 기준으로 첫 번째 공진점 4.808 ㎓ 에서는 120 MHz의 대역폭을 가졌고, 두 번째 공진점 6.175 GHz 에서는 100 MHz의 대역폭을 가졌다.는 100 MHz의 대역폭을 가졌다.