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Planar Active Rectrodirective Array With Subharmonic Phase Conjugation Mixers
Kim. Gi-Rae, Park. Ji-Yong 한국해양정보통신학회 International journal of maritime information and communication sciences 4 Pages
한국해양정보통신학회 International journal of maritime information and communication sciences 2004, Vol.2 No.3 153-156 (4 pages)
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Dispersion Management and Optical Phase Conjugation in Optical Transmission Links with a Randomly Distributed Single-Mode Fiber Length
Lee. Seong-Real 한국정보통신학회 Journal of information and communication convergence engineering 6 Pages
한국정보통신학회 Journal of information and communication convergence engineering 2013, Vol.11 No.1 1-6 (6 pages)
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Bit Error Characteristics of Passive Phase Conjugation Underwater Acoustic Communication Due to a Drifting Source
Lin. Chun-Dan, Ro. Yong Ju, Rouseff. Daniel, Yoon. Jong Rak 한국음향학회 The journal of the Acoustical Society of Korea 6 Pages
한국음향학회 The journal of the Acoustical Society of Korea 2005, Vol.24 61-66 (6 pages)
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제초제 Alachlor의 선택성에 관한 연구;I. 약해와 글루타치온 Conjugation 반응
박창규, 황을철, Park. Chang-Kyu, Hwang. Eul-Chul 한국환경농학회 한국환경농학회지 6 Pages
한국환경농학회 한국환경농학회지 1987, Vol.6 No.1 44-49 (6 pages)
conjugate로 전환됨을 관찰하였으며, 이어 수행한 공시작물의 유묘시험에서는 처리한 C-14 표지 alachlor이 단시간(24hrs)에 4∼5개의 수용성 대사물로 전환되 었으며, 주요대사물로 대두에서는 homoglutathione-alachlor, 깨, 배추 그리고 피에서는 glutathione-alachlor conjugates를 잠정적으로 확인하였다. 본 연구에서 채택한 3종의 공시식물의 경우, 식물체 내에서 glutathione (및 homoglutathione)과 alachlor와의 phase Ⅱreaction인 conjugation 반응이 해독반응으로 작용, alachlor의 선택성에 공헌하는 것으로 해석하였다. -
Magnetic nanoparticle based purification and enzyme-linked immunosorbent assay using monoclonal antibody against enrofloxacin
Nam-Gun Kim, Myeong-Ae Kim, Young-Il Park, Tae-Sung Jung, Seong-Wan Son, ByungJae So, Hwan-Goo Kang 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 4호 6 431-437 (7 pages)
Monoclonal anti-enrofloxacin antibody was prepared for a direct competitive enzyme-linked immunosorbent assay (ELISA) and purification system using monoclonal antibody (mAb) coupled magnetic nanoparticles (MNPs). The IC50 values of the developed mAb for enrofloxacin (ENR), ciprofloxacin, difloxacin, sarafloxacin, pefloxacin, and norfloxacin were 5.0, 8.3, 9.7, 21.7, 36.0, and 63.7 ng/mL, respectively. The lowest detectable level of ENR was 0.7 ng/mL in the prepared ELISA system. To validate the... -
Distribution and accumulation of Cy5.5-labeled thermally cross-linked superparamagnetic iron oxide nanoparticles in the tissues of ICR mice
Jin Joo Hue, Hu-Jang Lee, Sangyong Jon, Sang Yoon Nam, Young Won Yun, Jong-Soo Kim, Beom Jun Lee 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 4호 14 473-479 (7 pages)
Free Cy5.5 dye and Cy5.5-labeled thermally cross-linked superparamagnetic iron oxide nanoparticles (TCL-SPION) have been routinely used for in vivo optical imaging. However, there is little information about the distribution and accumulation of free Cy5.5 dye and Cy5.5-labeled TCL-SPION in the tissues of mice. Free Cy5.5 dye (0.1 mg/kg body weight) and Cy5.5-labeled TCL-SPION (15 mg/kg body weight) were intravenously injected into the tail vein of ICR mice. The biodistribution and accumulation... -
Development of a monoclonal antibody against deoxynivalenol for magnetic nanoparticle-based extraction and an enzyme-linked immunosorbent assay
Hyuk-Mi Lee, Sung-Ok Song, Sang-Ho Cha, Sung-Bok Wee, Karyn Bischoff, Sung-Won Park, Seong-Wan Son, Hwan-Goo Kang*, Myung-Haing 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 2호 5 143-150 (8 pages)
Monoclonal antibody (mAb, NVRQS-DON) against deoxynivalenol (DON) was prepared. DON-Ag coated enzyme linked immunosorbent assay (ELISA) and DON-Ab coated ELISA were prepared by coating the DON-BSA and DON mAb. Quantitative DON calculation ranged from 50 to 4,000 ng/mL for DON-Ab coated ELISA and from 25 to 500 ng/mL for DON-Ag coated ELISA. 50% of inhibitory concentration values of DON, HT-2, 15-acetyl-DON, and nivalenol were 23.44, 22,545, 5,518 and 5,976 ng/mL based on the DON-Ab coated ELISA.... -
Production of a highly group-specific monoclonal antibody against zearalenone and its application in an enzyme-linked immunosorbent assay
Sang-Ho Cha, Sung-Hee Kim, Karyn Bischoff, Hyun-Jeong Kim, Seong-Wan Son, Hwan-Goo Kang* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 2호 2 119-125 (7 pages)
A monoclonal antibody (mAb) against zearalenone (ZEN) was produced using ZEN-carboxymethoxylamine and -BSA conjugates. Antibody produced by one clone showing a very high binding ability was selected and found to have a higher affinity for ZEN compared to a commerciall ZEN antibody. We developed two direct competitive ELISA systems using the selected antibody (ZEN-coated and anti-ZEN antibody-coated ELISA). Quantitative ranges for the anti-ZEN antibody-coated ELISA and ZEN-coated ELISA were from... -
In vivo metabolism of Talosin A, new isoflavonol glycoside from Kitasatospora kifunensis, in rats
Jong-Hwan Lim, In-Bae Song, Youn-Hwan Hwang, Myoung-Seok Kim, Jong-Woo Kim, Jin-Yong Kim, Joo Won Suh, Hyo-In Yun 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 2 115-120 (6 pages)
The isoflavonol glycoside Talosin A, genistein (GT)-7-a-L-6- deoxy talopyranose (GT-Tal), was first isolated from the culture broth of Kitasatospora kifunensis MJM341. The aim of the present study was to evaluate the oral absorption and metabolism of the newly isolated isoflavonol glycoside, GT-Tal compared to genistin (GT-7-O-b-D-glucopyranoside; GT- Glu). Free GT-Glu and GT-Tal could not be detected prior to enzymatic hydrolysis of the corresponding conjugates in rat plasma. Following oral... -
All blood, No stool: enterohemorrhagic Escherichia coli O157:H7 infection
Jang W. Yoon, Carolyn J. Hovde 대한수의학회 Journal of Veterinary Science 14 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 1 219-232 (14 pages)
Enterohemorrhagic Escherichia coli serotype O157:H7 is a pathotype of diarrheagenic E. coli that produces one or more Shiga toxins, forms a characteristic histopathology described as attaching and effacing lesions, and possesses the large virulence plasmid pO157. The bacterium is recognized worldwide, especially in developed countries, as an emerging food-borne bacterial pathogen, which causes disease in humans and in some animals. Healthy cattle are the principal and natural reservoir of E.... -
Differential Effects of Tautomycetin and Its Derivatives on Protein Phosphatase Inhibition, Immunosuppressive Function and Antitumor Activity
MingshanNiu, YanSun, BoLiu, LiTang, RongguoQiu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.2 10 145-151 (7 pages)
In the present work, we studied the structure-activity relationship (SAR) of tautomycetin (TMC) and its derivatives. Further, we demonstrated the correlation between the immunosuppressive fuction, anticancer activity and protein phosphatase type 1 (PP1) inhibition of TMC and its derivatives. We have prepared some TMC derivatives via combinatorial biosynthesis, isolation from fermentation broth or chemical degradation of TMC. We found that the immunosuppressive activity was correlated with... -
Amyloid Precursor Protein Binding Protein-1 Is Up-regulated in Brains of Tg2576 Mice
HyunJungYang, YuyoungJoo, Bo-HyunHong, Sung-JiHa, Ran-SookWoo, SangHyungLee, Yoo-HunSuh, Hye-SunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.4 5 229-233 (5 pages)
Amyloid precursor protein binding protein-1 (APP-BP1) binds to the carboxyl terminus of amyloid precursor protein and serves as a bipartite activation enzyme for the ubiquitin-like protein, NEDD8. Previously, it has been reported that APP-BP1 rescues the cell cycle S-M checkpoint defect in Ts41 hamster cells, that this rescue is dependent on the interaction of APP-BP1 with hUba3. The exogenous expression of APP-BP1 in neurons has been reported to cause DNA synthesis and apoptosis via a signaling... -
Glycochenodeoxycholic Acid Induces Cell Death in Primary Cultured Rat Hepatocyte Apoptosis and Necrosis
SangHuiChu, WolMiPark, KyungEunLee, YoungSookPae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 4 565-570 (6 pages)
Intracellular accumulation of bile acids in the hepatocytes during cholestasis is thought to be pathogenic in cholestatic liver injury. Due to the detergent-like effect of the hydrophobic bile acids, hepatocellular injury has been attributed to direct membrane damage. However histological findings of cholestatic liver diseases suggest apoptosis can be a mechanism of cell death during cholestatic liver diseases instead of necrosis. To determine the pattern of hepatocellular toxicity induced by... -
Distribution, Content and Molecular Heterogeneity of Gastrin- Releasing Peptide in Rat Pancreas
HyungSeoParkHyoungJinPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.4 7 427-432 (6 pages)
very identical to GRP-27, bombesin-24 and neuromedin C, were observed in the rat pancreas by using reversed phase C18 HPLC and Sephadex G-50 superfine column chromatography. Cell bodies of neurons containing immunoreactive GRP were scattered in pancreatic connective tissues and their nerve fibers innervated pancreatic acini and large ducts as determined by immunohistochemistry. The present results suggest that three distinct forms of GRP exist in intrapancreatic GRPergic neurons, which exert a... -
Ethanol Prevents from Acetaminophen Inducible Hepatic Necrosis by Inhibiting its Metabolic Activation in Mice
Sun-MeeLee, Tai-SoonCho, Young-NamCha 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 15 261-269 (9 pages)
Concomitant administration of a single acute dose of ethanol (4 g/kg) protected mice from the hepatocellular injury observed upon administration of a large dose of acetaminophen (400 mg/kg). This was evidenced by the normal histological appearances of liver sections and by the lowered serum aminotransferase activities in mice treated with ethanol and acetaminophen together. In the mice treated with acetaminophen alone, along with the hepatic necrosis, the hepatic microsomal aminopyrine... -
Thiobenzamide S-oxidation in Perfused Rat Liver Ex Vivo Determination of Hepatic Flavin-Containing Monooxygenase Activity
Woon-GyeChung, Hyung-KeunRoh, Young-NamCha 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.5 15 591-595 (5 pages)
that reduction of the oxidized TBSO back to the parent compound (TB) is negligible. Hydrolysis of the collected perfusates with either β- glucuronidase or arylsulfatase did not increase the TBSO level and thus, TBSO does not appear to undergo conjugation either to glucuronide or sulfate esters. Thus, measuring the rate of TB S-oxidation in the isolated perfused liver with 1 mM TB for 50 min provides a useful tool for evaluation of the hepatic FMO activity in the absence of hepatic necrosis and... -
Nortriptyline이 가토 혈중 주정농도에 미치는 영향에 관한 실험적 연구
대한신경정신의학회 신경정신의학 1977, 제 16권 제 4호 4 349-357 (9 pages)
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Bromobenzene 간손상에 대한 Diallyl Disulfide의 예방효과
이상일(Sang-Il Lee), 윤종국(Chong-Guk Yoon), 허근(Keun Huh) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1990, 제 26권 제 2호 11 185-192 (8 pages)
Diallyl disulfide의 간손상 예방효과를 검토할 목적으로 mouse에 bromobenzene을 투여해 간 손상의 model을 만든 다음 실험을 행하였을 때, diallyl disulfide를 전처치한 실험군이 대조군에 비하여 간손상의 정도가 경미하게 나타났다. 한편 diallyl disulfide의 간손상예방 효과 기전을 구명할 목적으로 bromobenzene의 활성화 및 해독 관련 효소들의 활성을 검토하였을때 활성화 효소인 aniline hydroxylase와 해독 효소의 일종인 epoxide hydrolase의 활성은 diallyl disulfide 전처치에 의해 변동이 없었으나, 나머지 해독 효소인... -
Production and Characterization of Specific Antibodies to Bombesin
Kwon, Hyeok-Yil, Lee, Yun-Lyul, Park, Hyoung-Jin 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 1호 9 91-98 (8 pages)
a specific bombesin antiserum far very sensitive radioimmunoassay, synthetic [lys3]-bombesin conjugated to bovine serum albumin was subcutaneously injected into guinea pigs. The conjugation was performed using either carbodiimide or gIutaraldehyde as a coupling agent. The antisera were characterized by analysis of Scatchard and Sips plots. The antiserum LBE 2G/2 raised by repeat injection of the immunogen conjugated with carbodiimide showed the titer of 1 : 188,000, very low cross-reactivity to... -
신성고혈압 백서의 신장절편에서 Renin 유리의 Negative Feedback 조절기전의 변조
김현종(Kim, Hyun-J.), 조경우(Cho, Kyung-W.) 대한생리학회 대한생리학회지 13 Pages
대한생리학회 대한생리학회지 1986, 제 20권 제 2호 10 236-248 (13 pages)
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수뇨관 결찰이 신장에 미치는 영향
김신곤(Kim, Shin G.), 조경우(Cho, Kyung W.) 대한생리학회 대한생리학회지 16 Pages
대한생리학회 대한생리학회지 1985, 제 19권 제 2호 7 173-188 (16 pages)
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vfr, A Global Regulatory Gene, is Required for Pyrrolnitrin but not for Phenazine-1-carboxylic Acid Biosynthesis in Pseudomonas chlororaphis G05
Xia Wu, Xiaoyan Chi, Yanhua Wang, Kailu Zhang, Le Kai, Qiuning He, Jinxiu Tang, Kewen Wang, Longshuo Sun, Xiuying Hao, Weihai Xie, Yihe Ge 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 4호 7 351-361 (11 pages)
In our previous study, pyrrolnitrin produced in Pseudomonas chlororaphis G05 plays more critical role in suppression of mycelial growth of some fungal pathogens that cause plant diseases in agriculture. Although some regulators for pyrrolnitrin biosynthesis were identified, the pyrrolnitrin regulation pathway was not fully constructed. During our screening novel regulator candidates, we obtained a white conjugant G05W02 while transposon mutagenesis was carried out between a fusion mutant... -
The Roles of Two hfq Genes in the Virulence and Stress Resistance of Burkholderia glumae
Jieun Kim, Mohamed Mannaa, Namgyu Kim, Chaeyeong Lee, Juyun Kim, Jungwook Park, Hyun-Hee Lee, Young-Su Seo 한국식물병리학회 The Plant Pathology Journal 14 Pages
한국식물병리학회 The Plant Pathology Journal 2018, 34권 5호 7 412-425 (14 pages)
The Hfq protein is a global small RNA chaperone that interacts with regulatory bacterial small RNAs (sRNA) and plays a role in the post-transcriptional regulation of gene expression. The roles of Hfq in the virulence and pathogenicity of several infectious bacteria have been reported. This study was conducted to elucidate the functions of two hfq genes in Burkholderia glumae, a causal agent of rice grain rot. Therefore, mutant strains of the rice-pathogenic B. glumae BGR1, targeting each of the... -
Management of Citrus Canker in Argentina, a Success Story
한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2017, 33권 5호 1 441-449 (9 pages)
Citrus canker is an important bacterial disease of citrus in several regions of the world. Strains of Xanthomonas citri type-A (Xc-A) group are the primary pathogen where citrus canker occurs. After Xc-A entered the Northeast of Argentina in 1974, the disease spread rapidly from 1977 to 1980 and then slowed down and remained moving at slow pace until 1990 when it became endemic. Citrus canker was detected in Northwest Argentina in 2002. This paper presents the main steps in the fight of the... -
A Rice Gene Homologous to Arabidopsis AGD2-LIKE DEFENSE1 Participates in Disease Resistance Response against Infection with Magnaporthe oryzae
한국식물병리학회 The Plant Pathology Journal 6 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 4호 9 357-362 (6 pages)
ALD1 (ABERRANT GROWTH AND DEATH2 [AGD2]-LIKE DEFENSE1) is one of the key defense regulators in Arabidopsis thaliana and Nicotiana benthamiana. In these model plants, ALD1 is responsible for triggering basal defense response and systemic resistance against bacterial infection. As well ALD1 is involved in the production of pipecolic acid and an unidentified compound(s) for systemic resistance and priming syndrome, respectively. These previous studies proposed that ALD1 is a potential candidate for... -
대장암 환자의 옥살리플라틴(oxaliplatin) 유도 말초신경병증에 대한 약물유전학적 접근: 체계적 문헌고찰
안수정, 최소영, 정혜정, 추상희 한국기초간호학회 Journal of Korean Biological Nursing Science 12 Pages
한국기초간호학회 Journal of Korean Biological Nursing Science 2018, Volume 20, No 2 1 55-66 (12 pages)
Purpose: Peripheral neuropathy is common among colorectal cancer (CRC) patients who undergo oxaliplatin-based (OXL) chemotherapy. A pharmacogenetic approach can be used to identify patients at high-risk of developing severe neuropathy. This type of approach can also help clinicians determine the best treatment option and prevent severe neurotoxicity. The purpose of this study is to investigate the evidence of pharmacogenetic markers for OXL-induced peripheral neuropathy (OXIPN) in patients with... -
EC개념을 사용하여 환경 표본안에 항생제 저항 군집에 관한 연구
김성표, 김이형 한국습지학회 한국습지학회지 7 Pages
한국습지학회 한국습지학회지 2011, Vol.13 No.2 3 181-187 (7 pages)
본 연구의 전체적인 목적은 공학 분야 사람들이 쉽게 환경 미생물군집내의 항생제 내성균의 거동을 조사할 수 있는 방법론을 개발하는 것이다. 이 목적을 위해서, 공학에 널리 사용되는 배양 기법을 이용한 유효농도(EC)기법을 사용될 수 있는지를 본 연구에서 알아보았다. 활성슬러지내 중에 테트라싸이클린이 주입되어(존재)하여 항생제 내성균이 자라기에 좋은 조건이 되었을 때, 테트라싸이클린에 대한 50% 및 90% 유효값 (EC50, EC90)은 대조군(테트라싸이클린 항생제가 포함되지 않은 것)과 비교하였을 때, 통계적으로 증가하였다.... -
분산 제어와 Mid-Span Spectral Inversion이 적용된 광전송 링크에서 반 전송 구획의 잉여 분산이 전체 잉여 분산에 미치는 영향
이성렬, Lee. Seong-Real 한국항행학회 한국항행학회논문지 6 Pages
한국항행학회 한국항행학회논문지 2014, Vol.18 No.5 455-460 (6 pages)
현상에 의한 왜곡을 보상할 수 있는 분산 제어 (DM; dispersion management)와 광 위상 공액 기술이 결합된 전송 링크의 최적 설계를 위한 성능 분석을 수행하였다. 즉 전체 전송 링크의 중간에 위치한 광위상 공액기 (OPC; optical phase conjugator) 양쪽의 전송 구획에서의 잉여 분산의 상호 관계가 최적 전체 잉여 분산 (NRD; net residual dispersion)에 미치는 영향을 살펴보았다. 시뮬레이션 결과 전반 전송 구획에서의 잉여 분산과 후반 전송 구획에서의 잉여 분산의 차이를 10 ps/nm로 하여 전체 전송 링크의 NRD를 10 ps/nm로... -
SMF 길이와 RDPS의 분포 패턴에 따른 왜곡된 WDM 신호의 보상 특성
이성렬, Lee. Seong-Real 한국항행학회 한국항행학회논문지 7 Pages
한국항행학회 한국항행학회논문지 2014, Vol.18 No.2 158-164 (7 pages)
고품질 초고속 광 신호 전송을 위해서는 그룹 속도 분산과 비선형 현상에 의한 왜곡을 억제하거나 줄여주는 기술이 필요하다. 가장 대표적인 기술로 분산 제어 (DM; dispersion management), 광 위상 공액 기술과 이 둘을 결합한 기술이 있다. 하지만 이러한 기술들에서 현재 사용되고 있는 단일 모드 광섬유의 고정 길이와 중계 구간 당 잉여 분산 (RDPS; residual dispersion per span)의 고정값은 유연한 링크 구성을 제한하고 있다. 본 연구의 목적은 광전송 링크를 구성하는 모든 중계 구간의 SMF 길이와 RDPS의 인위적 분포와 랜덤... -
RDPS가 랜덤하게 분포하는 분산 제어 광전송 링크에서 전체 전송 거리에 따른 유효 전체 잉여 분산
이성렬, Lee. Seong-Real 한국항행학회 한국항행학회논문지 8 Pages
한국항행학회 한국항행학회논문지 2013, Vol.17 No.4 413-420 (8 pages)
광 위상 공액 (optical phase conjugation)이 적용된 파장 다중 (WDM; wavelength division multiplexing) 시스템의 유연한 구성을 위하여 중계 구간 당 잉여 분산 (RDPS; residual dispersion per span)이 랜덤하게 분포하는 전송 링크에서 전체 전송 거리에 따른 설계 기준을 도출하였다. 설계기준 분석에 사용된 DM 파라미터는 유효 전체 잉여 분산 (NRD; net residual dispersion)과 유효 입사 전력이다. 단일 모드 광섬유 (SMF; single mode fiber) 기준 전체 전송 거리가 1,000 km 이하인 링크에 랜덤 분포의 RDPS가 적용되는 경우... -
분산 제어 광전송 링크에서 중계 구간의 RDPS 기울기에 따른 WDM 신호의 보상 특성
이성렬, Lee. Seong-Real 한국항행학회 한국항행학회논문지 10 Pages
한국항행학회 한국항행학회논문지 2013, Vol.17 No.2 208-217 (10 pages)
위상 공액 (optical phase conjugation)이 적용된 광전송 링크에서 중계 구간 당 잉여 분산 (RDPS; residual dispersion per span) 기울기 (slope)에 따른 파장 분할 다중 전송 (WDM; wavelength division multiplexed) 채널의 보상 특성을 분석하여 최적의 RDPS 기울기를 도출하였다. RDPS 기울기가 증가할수록 WDM 채널의 유효 입사 전력 범위를 더욱 증가시키고 채널 간 성능 차이를 더욱 감소시키는 것을 확인하였다. 아울러 RDPS 기울기가 증가할수록 유효 전체 잉여 분산 (NRD; net residual dispersion) 범위도 증가하여 큰 RDPS... -
고속 추적 특성을 위한 디지털 역지향성 배열 안테나 시스템 설계와 특성 평가
김소라, 유흥균, Kim. So-Ra, Ryu. Heung-Gyun 한국통신학회 한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신 6 Pages
한국통신학회 한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신 2013, No.0 623-628 (6 pages)
역지향성 배열 안테나 시스템은 기존의 빔형성 기술들에 비하여 복잡도가 낮고 간단하여 시스템 동작 속도가 빠르다. 따라서 고속이동체 환경에서의 빔추적에 용이하다. 하지만 역지향성 배열 안테나는 다중경로 환경 또는 다중 사용자 신호에 따른 AOA(anle of arrival) 추정에 어려움이 있다. 이러한 AOA 추정의 불확실성을 개선 하기 위해 MUSIC 알고리즘과 결합한 디지털 역지향성 배열 안테나 시스템을 제안한다. 본 논문에서는 위상을 추정하는 디지털 PLL 하나를 통하여 위상을 찾는 디지털 역지향성 배열 안테나 시스템을... -
디지털 역 지향성 배열 안테나 시스템 설계와 성능 평가
김소라, 이승환, 신동진, 유흥균, Kim. So-Ra, Lee. Seug Hwan, Shin. Dong Jin, Ryu. Heung-Gyoon 한국통신학회 한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신 7 Pages
한국통신학회 한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신 2013, No.0 217-223 (7 pages)
디지털 역 지향성 안테나 시스템은 사전 정보 없이 입사된 신호의 위상을 추적하고 위상을 반대로 돌려 수신된 방향으로 재전송을 할 수 있는 시스템으로써 아날로그 역 지향성 안테나와 비교하여 수정과 업그레이드가 쉽다는 장점이 있다. 이러한 특성으로 디지털 역 지향성 안테나는 고속 이동체 환경에서의 빠른 빔 추적이 가능할 것이다. 먼저 본 논문에서는 위상을 추정하는 디지털 PLL 하나를 통하여 각각의 array마다 수신된 신호의 지연된 위상을 찾는 디지털 역지향성 배역 안테나 시스템을 설계하며 array 개수에 따른 성능을...


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