Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.145
S. Yoo, Minchul Kim, Chae-Hyun Jung, Jae Kyu Park, Jaemin Lee, Sunghoon Jang
{"title":"Development for Wide-Band Active Array System with Photonics-Based\u0000 Optical Transceiver","authors":"S. Yoo, Minchul Kim, Chae-Hyun Jung, Jae Kyu Park, Jaemin Lee, Sunghoon Jang","doi":"10.5515/kjkiees.2023.34.2.145","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.145","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78003402","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.130
Jun Heo, Hyoi Moon, Sang Su Kim, N. Choi, Yong-Bae Park
{"title":"M&S Technique for Burn Through Range Analysis Considering\u0000 Terrain Environment and Earth Curvature","authors":"Jun Heo, Hyoi Moon, Sang Su Kim, N. Choi, Yong-Bae Park","doi":"10.5515/kjkiees.2023.34.2.130","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.130","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81455094","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.111
Kyeong-Jun Lee, J. Park, Moon‐Que Lee
{"title":"Design of Wideband Vertically Installed Planar (VIP)\u0000 Coupler","authors":"Kyeong-Jun Lee, J. Park, Moon‐Que Lee","doi":"10.5515/kjkiees.2023.34.2.111","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.111","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78141513","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.167
Dong Geun Lee, Won Bin Park, Hyosang Moon, Changyong Rhee, Namwoo Choi, Keum Cheol Hwang
In this study, a direction-finding array antenna with an improved front-to-back ratio was developed by inserting meander slots into the ground plane of an electrically small antenna. The proposed ground slot structure improves direction-finding capabilities while maintaining the electrically compact structure of the antenna. The overall size of the antenna is 58 mm×58 mm×40 mm, with each array element measuring 40 mm×22 mm×1.6 mm. The antenna consists of eight elements attached to a vertical column, forming an octagonal structure that affords omnidirectional detection. The measured S11 bandwidth (≤−10 dB) is between 2.37 and 2.48 GHz. At 2.44 GHz, the maximum gain is −2.71 dBi, the 3-dB beamwidth occurs at an elevation angle of 74.2° and azimuth angle of 84.4°, and the front-to-back ratio is 8.89 dB.
{"title":"ISM Band Direction-Finding Antenna with Improved Front-to-Back Ratio","authors":"Dong Geun Lee, Won Bin Park, Hyosang Moon, Changyong Rhee, Namwoo Choi, Keum Cheol Hwang","doi":"10.5515/kjkiees.2023.34.2.167","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.167","url":null,"abstract":"In this study, a direction-finding array antenna with an improved front-to-back ratio was developed by inserting meander slots into the ground plane of an electrically small antenna. The proposed ground slot structure improves direction-finding capabilities while maintaining the electrically compact structure of the antenna. The overall size of the antenna is 58 mm×58 mm×40 mm, with each array element measuring 40 mm×22 mm×1.6 mm. The antenna consists of eight elements attached to a vertical column, forming an octagonal structure that affords omnidirectional detection. The measured S11 bandwidth (≤−10 dB) is between 2.37 and 2.48 GHz. At 2.44 GHz, the maximum gain is −2.71 dBi, the 3-dB beamwidth occurs at an elevation angle of 74.2° and azimuth angle of 84.4°, and the front-to-back ratio is 8.89 dB.","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135147023","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.97
Jisu Lee, Jeahoon Cho, J. Choi, Kyung‐Young Jung
{"title":"Bow-Tie Quasi-Yagi Antenna with the Modified Ground Plane Structure\u0000 for Bandwidth-Enhanced Characteristics","authors":"Jisu Lee, Jeahoon Cho, J. Choi, Kyung‐Young Jung","doi":"10.5515/kjkiees.2023.34.2.97","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.97","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73957835","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.88
Duk-Kyu Park
{"title":"Changes of the Japanese Periodic Inspection System for Mobile\u0000 Communication Base Stations and Their Implications","authors":"Duk-Kyu Park","doi":"10.5515/kjkiees.2023.34.2.88","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.88","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"333 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79730183","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.103
Myeongha Hwang, Gyoungdeuk Kim, I. Lee, Sangkil Kim
{"title":"Design of Miniaturized 360° Analog Phase Shifter for\u0000 Multi-Functional Transmit-Array Antenna","authors":"Myeongha Hwang, Gyoungdeuk Kim, I. Lee, Sangkil Kim","doi":"10.5515/kjkiees.2023.34.2.103","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.103","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75895087","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.79
Tae-In Kim, Sanghoek Kim
{"title":"Characteristics of Land Clutter Signals and Their Synthesis\u0000 Methods","authors":"Tae-In Kim, Sanghoek Kim","doi":"10.5515/kjkiees.2023.34.2.79","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.79","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77849577","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2022.34.2.155
Ki-Jun Rah, Geon Lee, Ki-Bong Kang, Min Kim, Si-Ho Kim, Kyung-Tae Kim
{"title":"A Study on Improving the Performance of Low-Altitude, High-Speed\u0000 Target Detection at Sea Using Dual-Band Radar","authors":"Ki-Jun Rah, Geon Lee, Ki-Bong Kang, Min Kim, Si-Ho Kim, Kyung-Tae Kim","doi":"10.5515/kjkiees.2022.34.2.155","DOIUrl":"https://doi.org/10.5515/kjkiees.2022.34.2.155","url":null,"abstract":"","PeriodicalId":55817,"journal":{"name":"Journal of the Korean Institute of Electromagnetic Engineering and Science","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84532163","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}
Pub Date : 2023-02-01DOI: 10.5515/kjkiees.2023.34.2.138
In-Cheol Cho, Choung-Hyun Lee, Jae-Yup Shin, Hyun-Wook Moon, Sunghwan Sohn
{"title":"A Study on the Suppression of Secondary Reflected Signals during\u0000 Naval Gun Fire Using Naval Surveillance Radar","authors":"In-Cheol Cho, Choung-Hyun Lee, Jae-Yup Shin, Hyun-Wook Moon, Sunghwan Sohn","doi":"10.5515/kjkiees.2023.34.2.138","DOIUrl":"https://doi.org/10.5515/kjkiees.2023.34.2.138","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":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85103589","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}
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