Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing最新文献

Resonant Systems for Measurement of Electromagnetic Properties of Substances at V-Band Frequencies 测量物质在v波段电磁特性的共振系统

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.73643

K. Igor, P. Yu

{"title":"Resonant Systems for Measurement of Electromagnetic Properties of Substances at V-Band Frequencies","authors":"K. Igor, P. Yu","doi":"10.5772/INTECHOPEN.73643","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73643","url":null,"abstract":"Hemispherical open resonator (OR) with the segment of the oversized circular waveguide is considered. The cavity is formed by cylindrical, conical and spherical surfaces, and only axial-symmetric modes are excited. The power and spectral characteristics of such cavity with a dielectric bead and a rod have been studied. The quasi-periodic behavior of those dependencies was found out. Their qualitative agreement with similar dependencies for a cylindrical cavity is shown. It was found that physical processes in the cavity and in the hemispherical О R with the segment of the oversized circular waveguide are identical. Dielectric permittivity and loss-angle tangent measurements have been carried out in millimeter wavelength range for the Teflon and Plexiglas samples having the shape of the bead as well as for the fused quartz and glass samples of the rod shape. It was found out that such a resonant system allows measuring samples with high losses, that is, especially important for quality control of food stuffs and analysis of biological liquids. Energy analysis of the О R with the segment of the oversized rectangular waveguide has been performed. Basic possibility to apply such a resonant system for measurement of the dielectric permittivity of cylindrical samples with high losses has been shown as well.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134422135","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: 1

Microwave Energy and Light Energy Transformation: Methods, Schemes and Designs 微波能与光能转换:方法、方案与设计

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.73755

G. Churyumov, T. Frolova

{"title":"Microwave Energy and Light Energy Transformation: Methods, Schemes and Designs","authors":"G. Churyumov, T. Frolova","doi":"10.5772/INTECHOPEN.73755","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73755","url":null,"abstract":"Nowadays, electrodeless sulfur lamps with microwave excitation (ESLME) are finding ever-widening application in energy-efficiency lighting systems. A reason of increased interest to these lamps is due to high values of their parameters including a high light flux (120-145 klm), a light intensity (~ 9000 cd), a high value of light output (80-110 lm/W), color rendition coefficient (Ra ~ 90), as well as an application of environmentally friendly materials (argon and sulfur). This chapter presents a novel approach of creating an energy-efficiency lighting source on the basis of the ESLME. For an electrodynamic struc - ture of the lighting system, one can propose to use an optically transparent (mesh) wave guide instead of a microwave cavity. It is shown that the use of proximity of the spectra of optical radiation generated by the sulfur lamp and solar radiation allows more efficiently (in comparison with other light sources) their application as the simulators of sunlight for testing photoelectric converters and solar cells. For extending application of the light ing systems on the basis of the sulfur lamp and further increasing an energy efficiency of these systems, their integration with other electron devices (for example, solar cells) is proposed.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128835957","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

Introductory Chapter: RF/Microwave Applications 导论章:射频/微波应用

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.73574

K. You

引用次数: 3

Electromagnetic Computation of the Short-range Wireless Linkbuget for Biomedical Communication 生物医学通信短距离无线链路预算的电磁计算

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.76141

Ilkyu Kim

{"title":"Electromagnetic Computation of the Short-range Wireless Linkbuget for Biomedical Communication","authors":"Ilkyu Kim","doi":"10.5772/INTECHOPEN.76141","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.76141","url":null,"abstract":"The biomedical monitoring and imaging system requires data and power transmission through short-range communication, and the interference between large antennas placed within near-field region becomes the important consideration in designing an entire system. For the short-range communication, the electromagnetic computation becomes more complex, which requires huge computational resources. The efficient numerical methods that can be used in short-range communication are (1) Friis formula with correction term and (2) integral coupling formula. Both formulas are similar in an aspect that far-field gain pattern is used to calculate the link budget in a short range. The range of the communication link between two antennas can be defined as reactive near- field, radiating near-field including Fresnel region, a far-field region in the order of nearest distance. Friis formula with correction term can be useful for the simple on-axis antenna displacement in Fresnel region. The integral coupling formula is flexible to compute the mutual coupling of diverse antenna geometries within an entire radiating near-field and a far-field region. Those two methods are evaluated using several exam-ples of short-range communication and interference, and indoor measurement evalu- ates the validity of the calculated results.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125984911","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: 1

Microwave-Assisted Green Extraction Technology for Sustainable Food Processing 可持续食品加工的微波辅助绿色萃取技术

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.76140

R. Uzel

{"title":"Microwave-Assisted Green Extraction Technology for Sustainable Food Processing","authors":"R. Uzel","doi":"10.5772/INTECHOPEN.76140","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.76140","url":null,"abstract":"Today, the relationship between the concepts of environment, food, society, and health are frequently examined. It is necessary for people to understand the process consciously from the time when the foodstuffs are procured to reach their hands in order to prepare healthy living conditions for them. Previously used techniques for the production of foodstuffs, although adequate in terms of yield, can hardly adapt to environmental criteria. Instead, green techniques are being used that provide savings both in time and energy and that nutrients in foods can be obtained without loss as much as in traditional techniques. Green technology is most obviously applied to extraction. Microwave-assisted extraction (MAE), which is known as a kind of green extraction technology, can be easily and innovatively compared with other extraction techniques. Within the scope of this study, the concept of sustainability in food production has been explained, and the traditional and new extraction techniques have been explained. As a new extraction technique, information about the types of green extraction method has been given, and explanations have been made to explain the definition, mechanism, application fields, advantages, and disadvantages of MAE technique.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130155415","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: 7

3D Holographic Millimeter-Wave Imaging for Concealed Metallic Forging Objects Detection 用于隐藏金属锻件检测的三维全息毫米波成像

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.73655

Lulu Wang

引用次数: 4

Additive Manufacturing of 3D Printed Microwave Passive Components 3D打印微波无源元件的增材制造

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.74275

Irene O. Saracho-Pantoja, J. R. Montejo-Garai, J. Ruiz‐Cruz, J. Rebollar

{"title":"Additive Manufacturing of 3D Printed Microwave Passive Components","authors":"Irene O. Saracho-Pantoja, J. R. Montejo-Garai, J. Ruiz‐Cruz, J. Rebollar","doi":"10.5772/INTECHOPEN.74275","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.74275","url":null,"abstract":"This chapter presents a comprehensive analysis of the applications of a low-cost version of additive manufacturing (AM). The technique called Fused Filament Fabrication (FFF), which makes use of plastic as raw material, is explained in the context of its applications to the microwave waveguide engineering field. The main advantages of this technology include the promptness to print models, the variety of feasible geometries, and specially the reduced cost. The main limitations are also explained. Two important applications are considered: (1) rapid prototyping of complex devices and (2) manufacturing of fully functional devices. The former is relevant to get a more realistic perspective of the actual geometry in computer-aided designs, as shown in several examples. It also helps to forecast possible issues in the fabrication process that the computer sometimes fails to detect at the design stage. In the latter case (2), the subsequent and necessary metallization of plastic devices is also addressed. Several examples of state-of-the-art passive waveguide devices are presented, including waveguide filters, a diplexer, a branch-line coupler, a load or horn antennas, which have been printed, metallized, and measured. The results show the potential of three-dimensional (3D) printing and provide a different insight into this innovative technology.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131828576","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: 7

From Field to Shelf: How Microwave-Assisted Extraction Techniques Foster an Integrated Green Approach 从田间到货架:微波辅助提取技术如何促进综合绿色方法

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.73651

R. Rosa, E. Ferrari, P. Veronesi

{"title":"From Field to Shelf: How Microwave-Assisted Extraction Techniques Foster an Integrated Green Approach","authors":"R. Rosa, E. Ferrari, P. Veronesi","doi":"10.5772/INTECHOPEN.73651","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73651","url":null,"abstract":"Microwave-assisted extraction of organic compounds from vegetal matrixes is a relatively young field of research. The exceptional results achievable at the laboratory scale by microwave-assisted extraction, like shorter extraction times, lower average temperatures, reduction of organic solvents use, higher yields and selectivity, as well as energy and cost saving, are not always accompanied by a successful scale up. Nevertheless, microwave-assisted techniques of extraction have been multiplying during last decades. In this framework, a deeper knowledge of microwave applicator design criteria is mandatory. This chapter starts from the basis of microwave heating and the relevant material properties involved in a successful microwave-assisted extraction application, to continue with a short overview on how such properties can be measured and used to optimize the experimental setup or a possible scale up of the process under investigation. A comprehensive review of recent applications of microwave-assisted extraction, applied to vegetal matrixes, is presented next. The chapter ends reviewing duplex treatments of vegetal matrixes for extraction purposes, where microwave heating is coupled to other techniques, like ultrasounds, and indicating new paths, where the recent advent of new microwave solid-state generators has led to better process control and higher yields and energy efficiency.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132539480","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: 10

Fractal Array Antennas and Applications 分形阵列天线及其应用

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-03-31 DOI: 10.5772/INTECHOPEN.74729

V. A. S. Ponnapalli, P. Jayasree

{"title":"Fractal Array Antennas and Applications","authors":"V. A. S. Ponnapalli, P. Jayasree","doi":"10.5772/INTECHOPEN.74729","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.74729","url":null,"abstract":"Modern celestial and other advanced wireless communication systems require feasible array antennas with reconfigurable multibeams, broadband, high end of coverage, high gain, less side-lobe level with wider side-lobe level angles, better signal-to-noise ratio and small in size than conventionally achievable. This has initiated array antenna research in different tracks, one of which is by using fractal array antennas. The investigation on fractal-shaped antennas is basically focused on two fundamental areas such as the analysis and design of fractal antenna elements and the application of fractal geometric technology to the design of array antennas. These recursively generated antennas provide new insights into the antenna properties due to their self-similar behaviour. Owing to the feasible geometric construction and advanced properties, fractal antennas find applications in advanced wireless communications, MIMO radars, satellite communications and space observations. This work concentrated here is primarily aimed on the design of fractal array antennas using concentric elliptical ring sub-array fractal geometric design methodology and the reduction of total number of antenna elements at higher expansion factors of both conventional and proposed fractal array antennas.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129081159","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

Microwave Technology in Freeze-Drying Process 冷冻干燥过程中的微波技术

Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing Pub Date : 2018-03-14 DOI: 10.5772/INTECHOPEN.74064

M. Kalantari

{"title":"Microwave Technology in Freeze-Drying Process","authors":"M. Kalantari","doi":"10.5772/INTECHOPEN.74064","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.74064","url":null,"abstract":"Dehydrating is one of the most common processes in industry. This process is implemented by various techniques, such as freeze-drying. It is an energy-consuming process. Microwave sources are a good choice to supply the energy needed for this process. In reality, it is microwave-assisted freeze-drying. The microwave sources can be delivered around a few kilowatts. Electromagnetic energy is converted into thermal energy due to the interaction of electromagnetic fields and materials. In addition to providing energy, the microwave-assisted freeze-drying is time-saving. This method is fast due to penetrating electromagnetic fields in the material. It results in volumetrically heating instead of heating from the surface of the material in conventional methods. Usually, the frequency of electromagnetic fields is 2450 MHz, which is allocated by regulatory commissions in dielectric heating methods. In the following, the mechanism of this method is described. All relations governing the transfer of mass and heat are mentioned. How to transfer and dissipate energy is described. Dielectric properties of different materials are listed. The effective parameters in determining dielectric properties are discussed.","PeriodicalId":306073,"journal":{"name":"Emerging Microwave Technologies in Industrial, Agricultural, Medical and Food Processing","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133205359","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