Dmitriy A. Buhtiyarov, A. Gorbachev, Svetlana Yu. Zhelezko
{"title":"A Novel Approach to Improve the Quasi-Yagi Antenna Perfomances by Using an Ends-Fed Dipole Driver","authors":"Dmitriy A. Buhtiyarov, A. Gorbachev, Svetlana Yu. Zhelezko","doi":"10.9734/bpi/nupsr/v6/2339f","DOIUrl":"https://doi.org/10.9734/bpi/nupsr/v6/2339f","url":null,"abstract":"We present a novel method for improving the performance of quasi-Yagi antennas by employing the so-called ends-fed dipole radiator. A cylindrical prototype operating at 790 MHz is developed and tested to demonstrate this concept. The proposed radiator is a good candidate for producing high polarisation purity radiation because the area around the radiating arms is free of any conductors.The measured results show that such a driver can achieve an effective area reduction of up to 20% while improving the front-to-back ratio up to 17 dB without reducing bandwidth.","PeriodicalId":257537,"journal":{"name":"Newest Updates in Physical Science Research Vol. 6","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130813737","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}
You-Young Kim, Jae-Young Joo, Jong-Min Kim, Sun-Kyu Lee
{"title":"Compact Measurement of the Optical Power in High-Power LED Using a Light-Absorbent Thermal Sensor: A Recent Study","authors":"You-Young Kim, Jae-Young Joo, Jong-Min Kim, Sun-Kyu Lee","doi":"10.9734/bpi/nupsr/v6/7146d","DOIUrl":"https://doi.org/10.9734/bpi/nupsr/v6/7146d","url":null,"abstract":"","PeriodicalId":257537,"journal":{"name":"Newest Updates in Physical Science Research Vol. 6","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121732341","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}