• 전력전자학회:학술대회논문집
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• 전력전자학회 2012년도 추계학술대회 논문집
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• pp.141-142
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• 2012

포스코 에너지에서는 약 13개월에 걸쳐 3MW급 발전용 연료전지용 전력변환장치인 EBOP 시스템의 UL(Underwriters Laboratories) 인증을 추진한 결과 2012년 6월부로 UL 인증을 획득하였다.

• 전자공학회논문지D
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• 제34D권10호
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• pp.1-6
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• 1997

This paper presents the theoretical derivaion relating and image correlationcoeffcient capable of assessing image quality, with phase-error variance in antenna aperture domain. We show that when the phase-error variance of a range bin selected as an adaptive beamformer is known, the quality of the reconstructed image is predictable and moreover, the resultant correlation coeffcient is obviously greater than the derive dlower boudn. To support the derivation, real data are used for image formation where the dominant scatterer algorithm (DSA) is applied for phase compensations.

• 전자공학회논문지A
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• 제32A권4호
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• pp.40-46
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• 1995

The characteristics of the shielded suspended substrate coplanar waveguide(SSCPW) are analyzed by applying the point matchning method to the quasi-TEM mode approximation. The characteristic impedances and the effective dielectric constants are also calculated by changing the height of air and dielectric layer, and the strip width of SSCPW. Approaching the side strip width of SSCPW to zero, values of characteristic impedances and effective dielectric constants are agreed well with the results obtained by the variational method.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 추계종합학술대회 논문집
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• pp.821-824
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• 1999

In this article, as a way of pursuing high spectral efficiency and flexible cell planning, co-channel dual-polarization techniques are suggested for B-WLL applications. It provides a double down stream capacity compared with conventional scheme and also makes some flexibility in cell planning. In order to implement co-channel B-WLL system, some frequency plans, interference cancellation methods, and system block diagrams are presented here.

• 전자공학회논문지A
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• 제32A권9호
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• pp.1236-1243
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• 1995

The propagation characteristics of the symmetric and the asymmetric shielded coplanar waveguide with finite metallization thickness is analyzed by boundary integral method employing the equivalence principle. Since the Green's function and the basis functions are composed of sinusoidal functions, the integration in Galerkin's method is solved analytically. The propagation constants of the fundamental and the first higher order mode are obtained and the effects of strip thickness, substrate permittivity, and the asymmetry of the structure are calculated.

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2007년도 학술발표회
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• pp.190.1-190.1
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• 2007

• 전력전자학회:학술대회논문집
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• 전력전자학회 2010년도 하계학술대회 논문집
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• pp.279-280
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• 2010

본 논문의 Quench System은 KSTAR의 토카막의 초전도 코일인 플로이달 코일과 토로이달 코일의 보호장치로서 코일에서 Arc 발생 시 코일과 전원을 차단, 분리하고 코일전류를 Dump 저항으로 급속하게 방전시켜, 코일을 보호하는 System 이다.

• 전자공학회논문지D
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• 제34D권6호
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• pp.1-10
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• 1997

By using the boundary element method, the cahracterization and the circuit modelling of the coplanar waveguide (CPW) discontinuities are performed bvia quasi-static approximation. The capacitive equivalent circuits are obtained by developing the 3-D boundary element method with collocation method. On the triangular patch, the numerical scheme employed the linear basis functions and the analytic solutions of the integrals on the singular points. The capacitive discontinuities of gaps, end-gaps, and open-ends are characterized and the results compared with the conductor backed coplanar waveguides.

• 전자공학회논문지A
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• 제30A권12호
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• pp.36-42
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• 1993

By the variational method, the coplanar waveguide(C.P.W) shielded by two conducting plates has been analyzed. The particular potential solution has been obtained for the boundary conditions in C.P.W. The characteristic impedance and the effective dielectric constant in C.P.W. have been obtained by the variational method using the potential function and the assumed basis function for charge distributions. To consider the effect of the conducting plate in C.P.W. two cases, with and without the top plate, have been analyzed and compared respectively.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2019년도 추계학술대회
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• pp.220-221
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• 2019

본 논문에서는 자기유도방식의 드론용 무선전력 전송 시스템에 적합한 송·수신 패드의 모델을 제안하고, 드론의 수평 이격 거리에 따른 특성을 비교하였다. 송·수신 코일 간 결합계수, 저항 성분 등을 통하여 송·수신 패드의 성능을 비교하였으며, 해당 모델에서 최적의 성능을 보이는 코일의 턴 수 및 위치를 연구하였다.