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Miniaturized Electronically Steerable Parasitic Array Antenna 微型化电子操纵寄生阵列天线
天线与传播(英文) Pub Date : 2023-01-01 DOI: 10.4236/ojapr.2023.111001
Shafaq Kausar, A. Kausar, H. Mehrpouyan, M. Hadi, Salahuddin Tariq
{"title":"Miniaturized Electronically Steerable Parasitic Array Antenna","authors":"Shafaq Kausar, A. Kausar, H. Mehrpouyan, M. Hadi, Salahuddin Tariq","doi":"10.4236/ojapr.2023.111001","DOIUrl":"https://doi.org/10.4236/ojapr.2023.111001","url":null,"abstract":"","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595620","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
Investigation of Tablet Defects by AI Based Terahertz Technology 基于人工智能的太赫兹技术研究片剂缺陷
天线与传播(英文) Pub Date : 2023-01-01 DOI: 10.4236/ojapr.2023.112003
Nagendra P. Yadav, Guozhen Hu, R. Singh
{"title":"Investigation of Tablet Defects by AI Based Terahertz Technology","authors":"Nagendra P. Yadav, Guozhen Hu, R. Singh","doi":"10.4236/ojapr.2023.112003","DOIUrl":"https://doi.org/10.4236/ojapr.2023.112003","url":null,"abstract":"Recently a lot of medical tablets with special packets in the global market are available. For the safety and purity of the tablet, we need to scan it by developed scanner technology, which should be not more expensive and easily available in the market. The THz technology is one of them. In the proposed work, we have tasted tablet images with the help of the THz super-resolution scanner, which is already available in our lab. The AI machine learning data concept has been investigated. Good resolution of images has been obtained. Furthermore, the challenging research problems are discussed. Finally, it summarizes the recent updates in terahertz technology for drug inspection and medical applications with potential research challenges.","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595691","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
Modeling and Simulation of High Frequency Electromagnetics Wave Propagation on Vivaldi Antenna Using Finite Element Method 高频电磁波在维瓦尔第天线上传播的有限元建模与仿真
天线与传播(英文) Pub Date : 2023-01-01 DOI: 10.4236/ojapr.2023.113005
Jean Ndoumbe, Nelly Tchuenbou, Charles Hubert Kom
{"title":"Modeling and Simulation of High Frequency Electromagnetics Wave Propagation on Vivaldi Antenna Using Finite Element Method","authors":"Jean Ndoumbe, Nelly Tchuenbou, Charles Hubert Kom","doi":"10.4236/ojapr.2023.113005","DOIUrl":"https://doi.org/10.4236/ojapr.2023.113005","url":null,"abstract":"The simulation of the electromagnetic wave propagation plays an important role in predicting the performance of wireless transmission and communication systems. This research paper performs a numerical simulation using the finite element method (FEM) to study electromagnetic propagation through both conductive and dielectric media. The simulations are made using the COMSOL Multiphysics software which notably implements the finite element method. The microwave is produced by a Vivaldi antenna at the respective frequencies of 2.6 and 5 GHz and the propagation equation is formulated from Maxwell’s equations. The results obtained show that in the air, strong electric fields are observed in the slot and the micro-strip line for the two frequencies, they are even greater when the wave propagates in the glass and very weak for the copper. The 3D evolutions of the wave in air and glass present comparable values at equal frequencies, the curves being more regular in air (dielectric). The radiation patterns produced for air and glass are directional, with a large main lobe, which is narrower at 5 GHz. For copper, the wave propagation is quite uniform in space, and the radiation patterns show two main lobes with a much larger size at 2.6 GHz than at 5 GHz. The propagation medium would therefore influence the range of values of the gain of the antenna.","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135800070","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 Review on Conductive and Transparent Materials Used in the Design of Transparent Antennas 透明天线设计中导电和透明材料的研究进展
天线与传播(英文) Pub Date : 2023-01-01 DOI: 10.4236/ojapr.2023.112002
A. Sissoko, Cheick Sanogo, B. Diourte
{"title":"A Review on Conductive and Transparent Materials Used in the Design of Transparent Antennas","authors":"A. Sissoko, Cheick Sanogo, B. Diourte","doi":"10.4236/ojapr.2023.112002","DOIUrl":"https://doi.org/10.4236/ojapr.2023.112002","url":null,"abstract":"","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595680","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
Developing Three-Dimensional Beamshaping Techniques on Volumetric Random Arrays to Suppress Array Sidelobes 基于体积随机阵列的三维波束成形技术抑制阵列副瓣
天线与传播(英文) Pub Date : 2023-01-01 DOI: 10.4236/ojapr.2023.112004
Shihyuan Yeh
{"title":"Developing Three-Dimensional Beamshaping Techniques on Volumetric Random Arrays to Suppress Array Sidelobes","authors":"Shihyuan Yeh","doi":"10.4236/ojapr.2023.112004","DOIUrl":"https://doi.org/10.4236/ojapr.2023.112004","url":null,"abstract":"","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595745","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
Optimization of Coupled Periodic Antenna Using Genetic Algorithm with Floquet Modal Analysis and MoM-GEC 结合Floquet模态分析和MoM-GEC的遗传算法优化耦合周期天线
天线与传播(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojapr.2022.101001
Nader Ben Latifa, T. Aguili
{"title":"Optimization of Coupled Periodic Antenna Using Genetic Algorithm with Floquet Modal Analysis and MoM-GEC","authors":"Nader Ben Latifa, T. Aguili","doi":"10.4236/ojapr.2022.101001","DOIUrl":"https://doi.org/10.4236/ojapr.2022.101001","url":null,"abstract":"","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595569","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: 5
Design and Construction of Axial Mode Mono-Filar Helical Antenna for Hydrogen Line Emission Studies with 4NEC2 Tool 基于4NEC2工具的氢线发射轴向单丝螺旋天线设计与构建
天线与传播(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojapr.2022.103003
Emmanuel Okpanachi Musa, Ikechukwu Anthony Obi, Eugene Anibe Idogbe, Jacob Okpe Ali, Cyril Osamhonyi Ogbeiwi, Prosper Chukwuebuka Chukwuka, Ndubuisi Francis Eze
{"title":"Design and Construction of Axial Mode Mono-Filar Helical Antenna for Hydrogen Line Emission Studies with 4NEC2 Tool","authors":"Emmanuel Okpanachi Musa, Ikechukwu Anthony Obi, Eugene Anibe Idogbe, Jacob Okpe Ali, Cyril Osamhonyi Ogbeiwi, Prosper Chukwuebuka Chukwuka, Ndubuisi Francis Eze","doi":"10.4236/ojapr.2022.103003","DOIUrl":"https://doi.org/10.4236/ojapr.2022.103003","url":null,"abstract":"","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595609","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
Low-Cost Metamaterial Loaded Microstrip Antenna for Defense Applications 用于国防的低成本超材料加载微带天线
天线与传播(英文) Pub Date : 2021-01-01 DOI: 10.4236/OJAPR.2021.91001
Krushi Modi, Parth Kachhadiya, J M Rathod, P. H. Panchal, K. Parikh
{"title":"Low-Cost Metamaterial Loaded Microstrip Antenna for Defense Applications","authors":"Krushi Modi, Parth Kachhadiya, J M Rathod, P. H. Panchal, K. Parikh","doi":"10.4236/OJAPR.2021.91001","DOIUrl":"https://doi.org/10.4236/OJAPR.2021.91001","url":null,"abstract":"We have designed a Metamaterial unit-cell for 9 GHz frequency. Periodic structure was used at 4.25 × 4.25 mm with a thickness of 0.35 mm and giving us the 99.99% of absorbance at 9 GHz in simulated results. We have implemented a rectangular microstrip antenna and loaded it with Metamaterial unit-cells which provided improved results. There were results available for reflection coefficient (s11 parameter) at 9 GHz and also helping for the reduction of the Radar Cross Section of an antenna, which reduced more than 20 dB and not affected its directivity and gain.","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595435","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: 3
Stitched Ground Planes for Textile Antenna Application: An Experimental Study 纺织天线中缝合接地面的实验研究
天线与传播(英文) Pub Date : 2021-01-01 DOI: 10.4236/OJAPR.2021.92002
A. Wiri
{"title":"Stitched Ground Planes for Textile Antenna Application: An Experimental Study","authors":"A. Wiri","doi":"10.4236/OJAPR.2021.92002","DOIUrl":"https://doi.org/10.4236/OJAPR.2021.92002","url":null,"abstract":"This paper presents an application of stitched ground plane for microstrip patch antenna design. In this work Matlab interface to computer embroidery techniques were used to implement the felt and denim substrates on microstrip patch antenna. These antennas were simulated using a commercial full 3D electromagnetic CST Microwave Studio 2019. A method to optimize the stitch patterns with conductive thread for antenna ground plane for 2.45 GHz industrial, scientific, and medical (ISM) band and 5 GHz wearable wireless local area networks (WLAN) frequencies was achieved. Rigid and flexible wearable antennas (microstrip patch antennas) were fabricated using the stitched ground plane. The electrical resistance was reduced between the meshes during the stitching design process. Results in terms of bandwidth, radiation patterns and reflection coefficients (S 11 ) are presented.","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595470","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: 3
Design of Carbon Nanotube Antenna in Nanoscale Range 纳米尺度碳纳米管天线的设计
天线与传播(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojapr.2021.94005
Muna Hajjyahya, M. Ishtaiwi, Jeelan Sayyed, Ayyam Saddouq
{"title":"Design of Carbon Nanotube Antenna in Nanoscale Range","authors":"Muna Hajjyahya, M. Ishtaiwi, Jeelan Sayyed, Ayyam Saddouq","doi":"10.4236/ojapr.2021.94005","DOIUrl":"https://doi.org/10.4236/ojapr.2021.94005","url":null,"abstract":"In this paper, new values of efficiency for coated and non-coated carbon nanotube dipole antennas are found at different ranges of length and constant radius to have an effective model in wireless communication technology, biomedical engineering, sensors and solar cells. The main issue is to get matching between the antenna and the feeding source (discreet port). To have the best value of matching impedance by optimization method through entering trials of impedance value the aim of this paper is to have the best result of efficiency in each length. A new value of efficiency is shown for coated carbon nanotube dipole antennas, it is about 59%.","PeriodicalId":60503,"journal":{"name":"天线与传播(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70595487","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: 2
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