Pub Date : 2024-08-06DOI: 10.1109/mmm.2024.3412427
Gopika R, Chinmoy Saha, Yahia M. M. Antar
Energy-harvesting (EH) and wireless power transmission devices using microwaves have garnered considerable attention recently. Generating energy from ambient signals or a dedicated source improves the chances of replacing conventional battery-based systems. Batteries have been the most important power source in applications where mobility is essential. These portable devices eliminated the need for extensive transmission cables and ac power outlets. From watches to automobiles, batteries reigned as the power source over many decades. However, as time goes on, the disposal of dead batteries poses a relevant concern and real threat. Harmful chemicals, such as lead, mercury, cadmium, zinc, and chromium [1] , from dumped batteries can change the soil composition, which affects agriculture and, eventually, the biochain. With the evolving food chain, these harmful compounds affect the equilibrium of the entire ecosystem. Therefore, a viable replacement for battery-based devices becomes imperative.
{"title":"An Insight to Compact Rectenna Architectures: Potential Battery Alternatives","authors":"Gopika R, Chinmoy Saha, Yahia M. M. Antar","doi":"10.1109/mmm.2024.3412427","DOIUrl":"https://doi.org/10.1109/mmm.2024.3412427","url":null,"abstract":"Energy-harvesting (EH) and wireless power transmission devices using microwaves have garnered considerable attention recently. Generating energy from ambient signals or a dedicated source improves the chances of replacing conventional battery-based systems. Batteries have been the most important power source in applications where mobility is essential. These portable devices eliminated the need for extensive transmission cables and ac power outlets. From watches to automobiles, batteries reigned as the power source over many decades. However, as time goes on, the disposal of dead batteries poses a relevant concern and real threat. Harmful chemicals, such as lead, mercury, cadmium, zinc, and chromium <xref ref-type=\"bibr\" r xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">[1]</xref>\u0000, from dumped batteries can change the soil composition, which affects agriculture and, eventually, the biochain. With the evolving food chain, these harmful compounds affect the equilibrium of the entire ecosystem. Therefore, a viable replacement for battery-based devices becomes imperative.","PeriodicalId":55023,"journal":{"name":"IEEE Microwave Magazine","volume":"72 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1109/mmm.2024.3420528
{"title":"IEEE Transactions on Microwave Theory and Techniques: Special Issue on Latest Advances on Radar-Based Physiological Sensors and Their Applications","authors":"","doi":"10.1109/mmm.2024.3420528","DOIUrl":"https://doi.org/10.1109/mmm.2024.3420528","url":null,"abstract":"","PeriodicalId":55023,"journal":{"name":"IEEE Microwave Magazine","volume":"27 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1109/mmm.2024.3412488
Satya Prasad Mishra, Sudipta Maity
Metamaterials [1] are artificially engineered structures that, unlike other conventional materials, are capable of manipulating the properties of an electromagnetic (EM) wave. There are three types of metamaterials: 1) single negative, where the material has either a negative permittivity value or a negative permeability value; 2) double negative, the most common type, in which both permeability and permittivity have negative values; and 3) zero index, where either ${epsilon}$ or ${mu}$ is zero, which leads to a zero-refractive index. In 1968, Veselago [2] studied these types of materials theoretically and discovered various fascinating properties, including the Doppler effect reversal, reversal of Snell’s law, change in the reflection properties of a concave and convex lens, and reversal of the boundary conditions used to analyze an EM wave interaction with a medium. An important characteristic of a double-negative metamaterial is its ability to support wave transmission in the reverse direction, where the phase and group velocities exhibit opposing orientations, (i.e., the incident wave direction is opposite to that of the maximum power). By employing a repetitive arrangement of thin wires with periodicity $p$ and diameter $a$ , as shown in Figure 1(a) , Pendry et al. [3] have obtained negative permittivity.
{"title":"Metamaterial-Based Microwave Absorbers: The Current State of the Art: Microwave Absorbers","authors":"Satya Prasad Mishra, Sudipta Maity","doi":"10.1109/mmm.2024.3412488","DOIUrl":"https://doi.org/10.1109/mmm.2024.3412488","url":null,"abstract":"Metamaterials <xref ref-type=\"bibr\" r xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">[1]</xref> are artificially engineered structures that, unlike other conventional materials, are capable of manipulating the properties of an electromagnetic (EM) wave. There are three types of metamaterials: 1) single negative, where the material has either a negative permittivity value or a negative permeability value; 2) double negative, the most common type, in which both permeability and permittivity have negative values; and 3) zero index, where either <inline-formula xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><tex-math notation=\"LaTeX\">${epsilon}$</tex-math></inline-formula> or <inline-formula xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><tex-math notation=\"LaTeX\">${mu}$</tex-math></inline-formula> is zero, which leads to a zero-refractive index. In 1968, Veselago <xref ref-type=\"bibr\" r xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">[2]</xref> studied these types of materials theoretically and discovered various fascinating properties, including the Doppler effect reversal, reversal of Snell’s law, change in the reflection properties of a concave and convex lens, and reversal of the boundary conditions used to analyze an EM wave interaction with a medium. An important characteristic of a double-negative metamaterial is its ability to support wave transmission in the reverse direction, where the phase and group velocities exhibit opposing orientations, (i.e., the incident wave direction is opposite to that of the maximum power). By employing a repetitive arrangement of thin wires with periodicity <inline-formula xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><tex-math notation=\"LaTeX\">$p$</tex-math></inline-formula> and diameter <inline-formula xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><tex-math notation=\"LaTeX\">$a$</tex-math></inline-formula>\u0000, as shown in <xref ref-type=\"fig\" r xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">Figure 1(a)</xref>\u0000, Pendry et al. <xref ref-type=\"bibr\" r xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">[3]</xref> have obtained negative permittivity.","PeriodicalId":55023,"journal":{"name":"IEEE Microwave Magazine","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1109/mmm.2024.3411995
Maurizio Bozzi
The IEEE Microwave Theory and Technology Society (MTT-S) is a global community, with 40% of its members in North America (Regions R1–R7); 22% in Europe, Africa, and Middle East (R8); 2% in Latin America (R9); and 36% in Asia and Oceania (R10) ( Figure 1 ).
{"title":"The Global Outreach of the MTT-S [President’s Column]","authors":"Maurizio Bozzi","doi":"10.1109/mmm.2024.3411995","DOIUrl":"https://doi.org/10.1109/mmm.2024.3411995","url":null,"abstract":"The IEEE Microwave Theory and Technology Society (MTT-S) is a global community, with 40% of its members in North America (Regions R1–R7); 22% in Europe, Africa, and Middle East (R8); 2% in Latin America (R9); and 36% in Asia and Oceania (R10) (\u0000<xref ref-type=\"fig\" r xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">Figure 1</xref>\u0000).","PeriodicalId":55023,"journal":{"name":"IEEE Microwave Magazine","volume":"31 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1109/mmm.2024.3428708
{"title":"IEEE TECH RXIV:Share Your Preprint Research with the World!","authors":"","doi":"10.1109/mmm.2024.3428708","DOIUrl":"https://doi.org/10.1109/mmm.2024.3428708","url":null,"abstract":"","PeriodicalId":55023,"journal":{"name":"IEEE Microwave Magazine","volume":"30 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1109/mmm.2024.3412548
Nosherwan Shoaib
Provides society information that may include news, reviews or technical notes that should be of interest to practitioners and researchers.
提供从业人员和研究人员感兴趣的社会信息，包括新闻、评论或技术说明。
{"title":"Future Fusion: Bridging Paths for Professionals and Students [MGA News]","authors":"Nosherwan Shoaib","doi":"10.1109/mmm.2024.3412548","DOIUrl":"https://doi.org/10.1109/mmm.2024.3412548","url":null,"abstract":"Provides society information that may include news, reviews or technical notes that should be of interest to practitioners and researchers.","PeriodicalId":55023,"journal":{"name":"IEEE Microwave Magazine","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：