• JSTS:Journal of Semiconductor Technology and Science
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• 제3권4호
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• pp.205-210
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• 2003

A 3-Transistor cell CMOS OTP ROM array using standard CMOS antifuse (AF) based on permanent breakdown of MOSFET gate oxide is proposed, fabricated and characterized. The proposed 3-T OTP cell for ROM array is composed of an nMOS AF, a high voltage (HV) blocking nMOS, and cell access transistor, all compatible with standard CMOS technology. The experimental results show that the proposed structure can be a viable technology option as a high density OTP ROM array for modern digital as well as analog circuits.

• 한국광학회:학술대회논문집
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• 한국광학회 2009년도 동계학술발표회 논문집
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• pp.293-294
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• 2009

The spectral responsivity of solar cells has been measured under high background irradiance using an LED-based differential spectral responsivity Comparator (DSR-C). The comparator developed is fully automated and has some advantages: It does not need a chopper to modulate the light. Unlike the conventional method, it does not require a monochromator to select wavelength. It covers a wavelength range up to 1200 nm. The wavelength range of the comparator is limited by the spectral power distribution of the LEDs and the spectral responsivity of the standard detector. An active temperature control was utilized to meet the specified standard conditions of solar cell test. This work shows the effect of different levels of background irradiance on the spectral responsivity and the importance of same background irradiance for solar cell test as specified by the corresponding standard.

• 대한전자공학회논문지
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• 제22권1호
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• pp.68-74
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• 1985

이 논문에서는 standard cell의 layout을 위한 doglegging을 하지 않는 channel 배선 시스템에 대하여 서술할 것이다. 이 시스템은 주어진 net list specification을 만족시키기 위하여, 각각 standard cell 의 직선 배열 결합인 두 row 사이의 구평 track에서 이층의 최종 배선 패턴을 만들어 준다. 이 논문에서 사용한 CMOS cell library는 9개의 기본 cell을 가지고 있으며, Mead-Cogway 방식에서의 A-2micron을 사용하여 CIF(Caltech Intermediate From) 형태로 표현되었다. Component library에는 각 cell 내의 pin들의 이름. 위치 및 layer type 등의 입출력 port 특성이 저장되어서, CROUT라는 channel routing program에서 입력 자료로 사용된다. 또 다른 program NETPLOT은 routing 결과를 개략적으로 도시하여 주며, NETCIF에서는 최종의 자세한 layout을 CIF file로 만들어 주고 있다. 기본 cell을 이온하여 set/reset이 있는 dynamic Raster-slave형 D flip-flop에 대한 channel routing의 경우 VAX l1/780 에서 4초의 CPU 시간이 소요되었다.

• 대한전자공학회논문지
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• 제24권2호
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• pp.254-259
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• 1987

This paper describes the CMOS standard cell library implemented in double metal single poly gate process with 3\ulcornerm design rule, and its results of testing. This standard cell library contains total 33 cells of random logic gates, flip-flop gates and input/output buffers. All of cell was made to have the equal height of 98\ulcornerm, and width in multiple constant grid of 9 \ulcornerm. For cell data base, the electric characteristics of each cell is investigated and delay is characterized in terms of fanout. As the testing results of Ring Oscillator among the cell library, the average delay time for Inverter is 1.05 (ns), and the delay time due to channel routing metal is 0.65(ps)per unit length.

• 전기전자학회논문지
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• 제24권3호
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• pp.845-852
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• 2020

3 나노미터 아래의 미래공정에서는 작은 면적의 표준셀(Standard Cell)을 구현하는 데에 많은 기술적인 개선을 요구한다. 따라서 어떠한 기술을 통해 얼마나 작은 면적의 표준셀을 구현할 수 있는지, 그리고 그 영향이 어떠한지 알아보는 것은 매우 중요하다. 본 논문에서는 3 나노미터와 이하의 미래공정에서 표준셀 설계를 위해 묻힌 전력망(Buried Power Rail, BPR)과 상호보완 FET(Complementary FET, CFET)이 면적 감소에 얼마나 기여하는지 살펴보며 그 영향을 기생 캐패시턴스 관점에서 분석한다. 본 논문을 통해 상호보완 FET은 4T 이하의 표준셀을 구현할 수 있는 기술이지만, Z-축으로 증가하는 높이만큼 상당한(+18.0% 이상) 기생 Cap의 영향을 받는다는 점을 밝힌다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2002년도 생물공학의 동향 (X)
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• pp.293-296
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• 2002

Hyperosmotic pressure increased specific antibody productivity ($q_{Ab}$) of recombinant CHO cells (SH2-0.32) while it depressed cell growth. Thus, the use of hyperosmolar medium did not increase the maximum antibody concentration substantially. To overcome this drawback, the feasibility of biphasic culture strategy was investigated. In the biphasic culture, cells were first cultivated in the standard medium with physiological osmolality(294 mOsm/kg) for cell growth. When cells reached the late exponential phase of growth, the spent standard medium was replaced with the fresh hyperosmolar medium (522 mOsm/kg) for antibody production. The ($q_{Ab}$) in growth phase with the standard medium was 2.1 ${\mu}g/10^6cell/day$ while the ($q_{Ab}$) in antibody production phase with the hyperosmolar medium (522 mOsm/kg) was 11.1 ${\mu}g/10^6cell/day$. Northern blot analysis showed a positive relationship between the relative contenet of Ig mRNA and ($q_{Ab}$), indicating that transcriptional regulation was involved in the response of rCHO cells to hyperosmotic pressure. Due to the enhanced ($q_{Ab}$) and increased cell concentration in biphasic culture, the maximum antibody concentration obtained in biphasic culture with 522 mOsm/kg medium exchange was 161% higher than that obtained in batch culture with the standard medium. Taken together, simple biphasic culture strategy based on hyperosmotic culture for improved foreign protein production from rCHO cells is effective in improving antibody production of rCHO cells.

• 한국강구조학회 논문집
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• 제11권3호통권40호
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• pp.259-270
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• 1999

본 연구에서는 대수심 해안에서 호안 구조물의 조성에 적합한 근입식 강판셀 구조의 표준설계절차를 확립하고 최적제원 결정을 위한 연구를 수행하였다. 최적 제원의 결정을 위해 셀 안전성 검토용 전산프로그램을 개발하고 강도가 다른 사질토 지반에 대해 수심별로 가능한 제원을 프로그램을 사용하여 도출한 뒤 최적 강판셀 제원 결정을 위한 일반식을 제안하였다. 아울러 강판셀의 관입을 위한 진동햄머 시스템의 소요 기진력 산정식의 타당성을 확인하는 모형실험을 수행하였으며, 제안한 셀제원에 대한 소요 기진력의 데이터를 제시하였다.

• 한국전자파학회논문지
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• 제20권1호
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• pp.91-99
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• 2009

본 논문에서는 micro-TEM cell을 사용한 표준 전자기장 발생법을 기술하고 측정불확도를 평가하였다. 표준 전자기장 발생 시스템은 auto-leveling 기능을 가진 신호발생부, 최대 1.2 GHz까지 동작하는 micro-TEM cell, 서미스터 마운트를 사용한 전력측정부로 구성된다. 표준 전자기장 발생법의 타당성을 보이기 위해 $10\;MHz{\sim}1\;GHz$ 대역에서 전자기장의 세기 20 V/m에 대해 실시된 전자기장의 세기 국제비교(CCEM.RF-K20)의 참여 결과를 제시하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 하계종합학술대회 논문집
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• pp.333-336
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• 1999

In this paper, a new high speed parallel input and parallel output GF(2$^{m}$ ) multiplier based on standard basis is proposed. The concept of the multiplication in standard basis coordinates gives an easier VLSI implementation than that of the dual basis. This proposed algorithm and method of implementation of the GF(2$^{m}$ ) multiplication are represented by two kinds of basic cells (which are the generalized and fixed basic cell), and the minimum critical path with pipelined operation. In the case of the generalized basic cell, the proposed multiplier is composed of $m^2$ basic cells where each cell has 2 two input AND gates, 2 two input XOR gates, and 2 one bit latches Specifically, we show that the proposed multiplier has smaller complexity than those proposed in 〔5〕.

• 약학회지
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• 제47권5호
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• pp.261-265
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• 2003

Near-infrared (NIR) system was used to determine rapidly and simply indomethacin in buffer solution for a dissolution test of tablets and capsules. Indomethacin standards were prepared ranging from 10 to 50 ppm using the mixture of phosphate buffer (pH 7.2) and water (1 : 4). The near-infrared (NIR) transmittance spectra of indomethacin standard solutions were collected by using a quartz cell in 1 mm and 2 mm pathlength. Partial least square regression (PLSR) was explored to develop calibration models over the spectral range 1100∼1700 nm. The model using 1 mm quartz cell was better than that using 2 mm quartz cell. The PLSR models developed gave standard error of prediction (SEP) of 0.858 ppm. In order to validate the developed calibration model, routine analysis was performed using another standard solutions. The NIR routine analysis showed good correlation with actual values. Standard error of prediction (SEP) is 1.414 ppm for 7 indomethacin samples in routine analysis and its error was permeable in the regulation of Korean Pharmacopoeia (VII). These results show the potential use of the real time monitoring for indomethacin during a dissolution test.