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Journal of the Korean Institute of Electromagnetic Engineering and Science最新文献

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Characteristics of BCI-Monitoring Probe System Using Electro-Magnetic Field Simulation 基于电磁场仿真的bci监控探头系统特性研究
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-06-01 DOI: 10.5515/kjkiees.2023.34.6.466
Hyo-gyun Kim, Gyeong-Ryun Choi, Sungsoo Choi, Young-gi Hong, Joosung Hwang, Chan-Kyu Kim, W. Nah
{"title":"Characteristics of BCI-Monitoring Probe System Using\u0000 Electro-Magnetic Field Simulation","authors":"Hyo-gyun Kim, Gyeong-Ryun Choi, Sungsoo Choi, Young-gi Hong, Joosung Hwang, Chan-Kyu Kim, W. Nah","doi":"10.5515/kjkiees.2023.34.6.466","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.6.466","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78225213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phase Adjustable 4T4R Sector Antenna for 5G 相位可调4T4R扇形天线，用于5G
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-06-01 DOI: 10.5515/kjkiees.2023.34.6.450
Jong-In Choi, Bom-Son Lee
{"title":"Phase Adjustable 4T4R Sector Antenna for 5G","authors":"Jong-In Choi, Bom-Son Lee","doi":"10.5515/kjkiees.2023.34.6.450","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.6.450","url":null,"abstract":"In this study, we present a 4T (transmit) 4R (receive) base station antenna for 5G. Furthermore we design, manufacture, and analyze phase-adjustable antennas that allow four RF signals supplied from the base station equipment to match the phase of each of the four ports of the antenna. The bandwidth was designed based on the 5G band (3,400~3,700 MHz) used by three mobile telecommunication companies. The radiation element of the antenna is configured to supply power to four ports consisting of two columns of dual polarization 10 arrays. Each transmission line fed to the four ports has a phase controller that can control the phase of the port, and each transmission line that has passed through it includes a module that includes a coupler that separates small signals and a coupler to combine into one. The combined signal was connected to a connector for signal detection outside the antenna and used as a test port. Using this configuration, the phase of the signal supplied from the base station equipment to each port of the antenna can be adjusted equally, and the phase difference for each port can be realized within 5°. Thus, separate services for each port and combined services of the ports were freely implemented without significant loss to enable beamforming.","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135046020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the Precise Measurement of Sea Level Altitude of Monopulse Radar on a Ship 舰船单脉冲雷达海平面高度精确测量研究
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-06-01 DOI: 10.5515/kjkiees.2022.34.6.477
Tae-Hyung Kim, Junehyune Park, Joon-Tae Park, Myoung-Il Kang, Hang-Soo Lee
{"title":"Study on the Precise Measurement of Sea Level Altitude of Monopulse\u0000 Radar on a Ship","authors":"Tae-Hyung Kim, Junehyune Park, Joon-Tae Park, Myoung-Il Kang, Hang-Soo Lee","doi":"10.5515/kjkiees.2022.34.6.477","DOIUrl":"https://doi.org/10.5515/kjkiees.2022.34.6.477","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86103699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the Precise Measurement of Sea Level Altitude of Monopulse Radar on a Ship 舰船单脉冲雷达海平面高度精确测量研究
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-06-01 DOI: 10.5515/kjkiees.2023.34.6.477
Tae-Hyung Kim, June-Hyune Park, Joon-Tae Park, Myoung-Il Kang, Hang-Soo Lee
{"title":"Study on the Precise Measurement of Sea Level Altitude of Monopulse Radar on a Ship","authors":"Tae-Hyung Kim, June-Hyune Park, Joon-Tae Park, Myoung-Il Kang, Hang-Soo Lee","doi":"10.5515/kjkiees.2023.34.6.477","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.6.477","url":null,"abstract":"Some monopulse radars on a ship require an altitude value of the radar relative to the sea level with error levels of several tens of centimeters (cm). In conventional methods, it is difficult to frequently measure the radar altitude relative to the sea level, which changes according to ship conditions, while maintaining error levels of several tens of centimeters. In this study, a monopulse radar irradiates a radar beam, measures the distance from the radar to the sea surface at the beam irradiation position, and presents a method for precisely measuring the radar altitude by considering the radar mounting error. The proposed method can be operated whenever necessary in a radar operating environment. We analyzed and verified the performance of the proposed method using simulations.","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135046262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Path Loss Prediction Applying Empirical Model in Civil Buildings with External Trees 基于经验模型的外树民用建筑路径损失预测
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-05-01 DOI: 10.5515/kjkiees.2022.34.5.399
Ki-Tae Park, Han-Hee Lee, Jae-Wook Lee, J. Kwon, Changhee Hyoung, Junghwan Hwang
{"title":"Path Loss Prediction Applying Empirical Model in Civil Buildings\u0000 with External Trees","authors":"Ki-Tae Park, Han-Hee Lee, Jae-Wook Lee, J. Kwon, Changhee Hyoung, Junghwan Hwang","doi":"10.5515/kjkiees.2022.34.5.399","DOIUrl":"https://doi.org/10.5515/kjkiees.2022.34.5.399","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"39 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89150380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A High Efficiency Wireless Power Transfer Drone Coil Structure for Interoperability and Robust Misalignment 一种高效无线电力传输无人机线圈结构的互操作性和鲁棒失调
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-05-01 DOI: 10.5515/kjkiees.2023.34.5.385
Sungjin Lee, Dong-Min Kim, Suhyun Kim, Junhwan Lim, Jeongho Lee, Joey Noel, D. Kim
{"title":"A High Efficiency Wireless Power Transfer Drone Coil Structure for\u0000 Interoperability and Robust Misalignment","authors":"Sungjin Lee, Dong-Min Kim, Suhyun Kim, Junhwan Lim, Jeongho Lee, Joey Noel, D. Kim","doi":"10.5515/kjkiees.2023.34.5.385","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.5.385","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"205 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72540164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Radar Performance Using Measured Domestic Atmospheric Data 利用国内大气测量数据分析雷达性能
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-05-01 DOI: 10.5515/kjkiees.2023.34.5.415
Myung-Hoon Park, Woo-Joong Jeon, Hyun-Wook Moon, Se-Woong Kwon, Sang-Hyun Kim, Ki-Won Lee
{"title":"Analysis of Radar Performance Using Measured Domestic Atmospheric\u0000 Data","authors":"Myung-Hoon Park, Woo-Joong Jeon, Hyun-Wook Moon, Se-Woong Kwon, Sang-Hyun Kim, Ki-Won Lee","doi":"10.5515/kjkiees.2023.34.5.415","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.5.415","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76696655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement in Shielding Effectiveness by Electromagnetic Absorbers Applied to Aperture of Metallic Enclosure 电磁吸收体应用于金属外壳孔径增强屏蔽效能
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-05-01 DOI: 10.5515/kjkiees.2022.34.5.409
J. Kwon, Changhee Hyoung, Junghwan Hwang, Hyunho Park
{"title":"Enhancement in Shielding Effectiveness by Electromagnetic Absorbers\u0000 Applied to Aperture of Metallic Enclosure","authors":"J. Kwon, Changhee Hyoung, Junghwan Hwang, Hyunho Park","doi":"10.5515/kjkiees.2022.34.5.409","DOIUrl":"https://doi.org/10.5515/kjkiees.2022.34.5.409","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"387 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76448058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wideband High-Precision Multi-Baseline Two-Dimensional Direction Finding Using Combination Phase Differences 基于组合相位差的宽带高精度多基线二维测向
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-05-01 DOI: 10.5515/kjkiees.2022.34.5.424
Chang-Ryul Yun, Dae-Gyu Choi, Kyu-Song Lee
{"title":"Wideband High-Precision Multi-Baseline Two-Dimensional Direction\u0000 Finding Using Combination Phase Differences","authors":"Chang-Ryul Yun, Dae-Gyu Choi, Kyu-Song Lee","doi":"10.5515/kjkiees.2022.34.5.424","DOIUrl":"https://doi.org/10.5515/kjkiees.2022.34.5.424","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82456821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gain Enhanced Fabry-Perot Cavity Antenna by Changing the Source Feeding Position 改变馈源位置增强法布里-珀罗腔天线增益
Journal of the Korean Institute of Electromagnetic Engineering and Science Pub Date : 2023-05-01 DOI: 10.5515/kjkiees.2023.34.5.331
Daeun Choi, Jieun Han, Dongho Kim
{"title":"Gain Enhanced Fabry-Perot Cavity Antenna by Changing the Source\u0000 Feeding Position","authors":"Daeun Choi, Jieun Han, Dongho Kim","doi":"10.5515/kjkiees.2023.34.5.331","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.5.331","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83886134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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