Journal of Microwave Power and Electromagnetic Energy最新文献

Electromagnetic interference shielding effectiveness and microwave absorption performance of plaster mortars containing metal waste chips in X-band frequency range 含金属废屑抹灰砂浆x波段电磁干扰屏蔽效能及微波吸收性能

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-07-19 DOI: 10.1080/08327823.2023.2235553

K. Ateş, Tolga Ziya Kocaer, S. Ozen, N. Kockal

{"title":"Electromagnetic interference shielding effectiveness and microwave absorption performance of plaster mortars containing metal waste chips in X-band frequency range","authors":"K. Ateş, Tolga Ziya Kocaer, S. Ozen, N. Kockal","doi":"10.1080/08327823.2023.2235553","DOIUrl":"https://doi.org/10.1080/08327823.2023.2235553","url":null,"abstract":"Abstract Exposure to electromagnetic radiation from digital devices, especially in the radio frequency range, affects human health in buildings. Furthermore, various electronic devices might be vulnerable to electromagnetic pollution in the same manner. Therefore, the electromagnetic interference (EMI) shielding technique is one of the electromagnetic compatibility (EMC) engineering phenomena that prevents the detrimental effects by means of electromagnetic pollution, especially in building areas. This work investigates the EMI shielding effectiveness and electromagnetic absorbing activities of plaster mortars containing various waste metals with different ratios. Measurements have been carried out in the frequency range of 8.2–12 GHz. Results concluded that the reference material shows the lowest total shielding effectiveness. The plaster mortar sample containing 20% iron, 3% steel, and 3% chromium showed the maximum EMI shielding effectiveness with a range of 20–24 dB. Measurement results indicated that the absorption capability is the dominant component of the total shielding effectiveness, except for the reference sample. Furthermore, the apparent porosity of each sample was analyzed. The maximum apparent porosity was obtained by chromium chips waste added sample. It was obtained that the iron waste chips increased the apparent porosity of samples.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"201202 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77696383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the microwave heating temperature uniformity of an intelligent synergistic mode stirrer 智能协同式搅拌器微波加热温度均匀性研究

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-07-03 DOI: 10.1080/08327823.2023.2235550

Biao Yang, Feiyun Peng, Cheng Cheng, Zhaogang Wu, Hongbin Huang

{"title":"Study on the microwave heating temperature uniformity of an intelligent synergistic mode stirrer","authors":"Biao Yang, Feiyun Peng, Cheng Cheng, Zhaogang Wu, Hongbin Huang","doi":"10.1080/08327823.2023.2235550","DOIUrl":"https://doi.org/10.1080/08327823.2023.2235550","url":null,"abstract":"Abstract Aiming at the intercoupling of multiple physics and the time-varying characteristics of boundary conditions in the microwave heating process, how to optimize the temperature uniformity of materials with a cooperative-mode stirrer is focused in this paper. First, the formation of standing waves can be effectively avoided by introducing the mode stirrer, thereby improving the heating efficiency of the material. Description of pattern stirrer motion processes using implicit functions and level set methods. Second, in order to optimize the temperature uniformity of the material, the stirrer is made intelligent, and the electromagnetic field distribution can be optimized by using different stirrer positions and directions, and the temperature uniformity is improved through intelligent coordination of stirrers in different positions. Finally, the finite element method is used to perform numerical simulation calculations on integer and continuous variables. The results show that the proposed method can improve the temperature uniformity of the conventional microwave heating model by 28.2%–81.44% and 23.2%∼63.91% at each level and lead hammer section respectively, and can improve the heating efficiency by 14.8%∼36.4%. According to its performance when heating different shapes and different materials, the proposed method is efficient and feasible.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"23 1","pages":"178 - 202"},"PeriodicalIF":1.5,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77015725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dielectric properties of Sphenarium purpurascens at 2.4 GHz 2.4 GHz时紫癜属植物的介电特性

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-04-03 DOI: 10.1080/08327823.2023.2203633

Tejinder Kaur, J. Olvera-Cervantes, R. Rojas‐Laguna, María Elena Sosa-Morales, A. Corona‐Chavez

引用次数: 0

Investigating the influence of marination and storage on microwave dielectric properties of chicken breast meat 研究腌制和贮藏对鸡胸肉微波介电特性的影响

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-04-03 DOI: 10.1080/08327823.2023.2207604

S. Trabelsi

{"title":"Investigating the influence of marination and storage on microwave dielectric properties of chicken breast meat","authors":"S. Trabelsi","doi":"10.1080/08327823.2023.2207604","DOIUrl":"https://doi.org/10.1080/08327823.2023.2207604","url":null,"abstract":"Abstract Simultaneous influence of marination and storage on dielectric properties of chicken meat was investigated through dielectric measurements at microwave frequencies. For this purpose, an open-ended coaxial probe and a vector network analyzer were used for measurement of the dielectric properties between 200 MHz and 20 GHz and at a room temperature of 22 °C. For all chicken samples, the same general trend was observed for the variations of dielectric properties with frequency. The dielectric constant decreased with frequency with significant slope change at about 5 GHz. The dielectric loss factor decreased sharply up to 2 GHz and then increased with frequency showing a broad relaxation above 8 GHz. Values of the dielectric constant and dielectric loss factor measured for marinated chicken meat samples were greater than those of non-marinated samples and this was more significant for the dielectric loss factor at lower frequencies. In addition, each level of marination was distinctly observed over the same frequency range. Investigation of the influence of storage revealed that the dielectric loss factor of marinated samples decreased over the storage period while those of non-marinated sample slightly increased with storage time. For both marinated and non-marinated samples, water loss increased with storage time.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"1 1","pages":"117 - 128"},"PeriodicalIF":1.5,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76987093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of multi-frequency heating based on the nonlinear response characteristics of magnetron to improve uniformity 基于磁控管非线性响应特性的多频加热改善均匀性研究

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-01-02 DOI: 10.1080/08327823.2023.2166003

Mengna Du, Zihao Zhang, Jie Huang, Huacheng Zhu, Yang Yang

{"title":"Study of multi-frequency heating based on the nonlinear response characteristics of magnetron to improve uniformity","authors":"Mengna Du, Zihao Zhang, Jie Huang, Huacheng Zhu, Yang Yang","doi":"10.1080/08327823.2023.2166003","DOIUrl":"https://doi.org/10.1080/08327823.2023.2166003","url":null,"abstract":"Abstract The majority of microwave ovens on the market are powered by magnetrons, which can only produce a narrow-band frequency that has a large peak, resulting in poor uniformity. A method is proposed to improve nonuniform heating based on nonlinear response characteristics of the magnetron to produce multi-frequency. First, a multi-physics model of microwave heating is established to realize the calculation of multi-frequency heating. Second, a multi-frequency heating experimental system based on the characteristics of the magnetron is built and verified with the calculated results. The results show that the calculated results are in good agreement with the experimental results. Finally, based on the multi-physics model, the influences of different parameters, such as frequency intervals, cavity size, location of the object to be heated and material properties, on microwave heating uniformity have also been discussed. The results show that the method adopted in this paper is feasible, and the heating uniformity of microwaves is improved.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"7 1","pages":"71 - 88"},"PeriodicalIF":1.5,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74439005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of microwave dryers on the properties of Jerusalem artichoke: physico-chemical, thermo-physical, energy consumption 微波干燥机对菊芋理化、热物理、能耗的影响

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-01-02 DOI: 10.1080/08327823.2023.2166005

Burcu Aksüt, S. Dursun, H. Polatcı, M. Taşova

{"title":"Effects of microwave dryers on the properties of Jerusalem artichoke: physico-chemical, thermo-physical, energy consumption","authors":"Burcu Aksüt, S. Dursun, H. Polatcı, M. Taşova","doi":"10.1080/08327823.2023.2166005","DOIUrl":"https://doi.org/10.1080/08327823.2023.2166005","url":null,"abstract":"Abstract Effects of pretreatments and drying methods on physico-chemical, thermo-physical, energy values were investigated. The longest drying duration was seen in control samples dried in hybrid microwave dryer at 350 W + 50 °C and the shortest in citric acid-treated samples dried in temperature-controlled microwave dryer. Citric acid-treated samples dried in temperature-controlled microwave dryer at 70 °C had the closest color values to fresh ones. Effective diffusion values of dried Jerusalem artichoke samples varied between 4.66 x 10−8 − 1.33 x 10−7 m2 s−1 and activation energy values varied between 14.53 − 41.74 kJ mol−1. Drying date was estimated with the Midilli-Küçük model. The highest specific heat, thermal conductivity and thermal diffusivity values were observed in control samples dried in temperature-controlled microwave oven at 60 °C and the highest density values were seen in citric acid-treated samples dried in hybrid microwave oven at 70 °C. The highest SMER value was observed in control samples dried in temperature-controlled microwave dryer at 60 °C. The lowest SEC value was seen in control samples dried in temperature-controlled microwave dryer at 60 °C. The lowest total energy consumption was encountered in citric acid-treated samples dried in temperature-controlled microwave dryer at 70 °C.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"105 1","pages":"28 - 43"},"PeriodicalIF":1.5,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77571000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Dielectric properties of cereal stubble infected with Bipolaris sorokiniana, Fusarium pseudograminearum and Pyrenophora teres in the microwave frequency range 微波频率范围内稻谷镰刀菌、伪稻谷镰刀菌和焦磷菌感染的介电特性研究

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2022-11-18 DOI: 10.1080/08327823.2022.2142754

Toni Petronaitis, G. Brodie, S. Simpfendorfer, R. Flavel, N. Warwick

{"title":"Dielectric properties of cereal stubble infected with Bipolaris sorokiniana, Fusarium pseudograminearum and Pyrenophora teres in the microwave frequency range","authors":"Toni Petronaitis, G. Brodie, S. Simpfendorfer, R. Flavel, N. Warwick","doi":"10.1080/08327823.2022.2142754","DOIUrl":"https://doi.org/10.1080/08327823.2022.2142754","url":null,"abstract":"Abstract Cereal production in Australia is severely impacted by stubble-borne pathogens which can survive multiple seasons within cereal residues (stubble). Microwave radiation may be able to reduce or eliminate the pathogens, but the energy requirements first need defining. Hence, the dielectric properties of wheat and barley stubble with different pathogen loads were investigated at 10%, 15%, 30% and 100% moisture content using an open-ended coaxial probe in a spectral band covering 915, 2450, and 5800 MHz. A significant increase in dielectric constant and loss factor was observed with increasing stubble moisture. The dielectric constant and loss factor were lower in the crown (basal) section of stubble compared with the stem (20 cm from base), due to differences in density. When stubble moisture was 100%, the loss factor of barley was higher than wheat. Infection of stubble by different pathogens did not affect the dielectric properties. Microwave heating could therefore be an effective method to heat cereal stubble to eradicate a range of cereal pathogens, especially at lower frequencies and high moisture content, at which the loss factor is high. This research serves as a starting point to define requirements for further development of effective microwave radiation treatments under field conditions.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"83 2 1","pages":"219 - 237"},"PeriodicalIF":1.5,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77418793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calculation of microwave heating temperature distribution based on SVD truncation 基于奇异值分解截断的微波加热温度分布计算

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2022-11-04 DOI: 10.1080/08327823.2022.2137748

Biao Yang, Hongbin Huang, Hongtao Ma, Lie-xing Zhou, Q. Du

{"title":"Calculation of microwave heating temperature distribution based on SVD truncation","authors":"Biao Yang, Hongbin Huang, Hongtao Ma, Lie-xing Zhou, Q. Du","doi":"10.1080/08327823.2022.2137748","DOIUrl":"https://doi.org/10.1080/08327823.2022.2137748","url":null,"abstract":"Abstract In mathematical models of microwave heating with infinite-dimensional characteristics, it is difficult to use traditional numerical methods to improve computational efficiency. In this work, we propose a fast and accurate method to calculate the temperature distribution of materials under microwave heating. First, we analysed the relationship between the choice of model order and the solution accuracy by downscaling the infinite-dimensional heat conduction partial differential equation (PDE) model into a finite-dimensional ordinary differential equation (ODE) model. Additionally, the effect of different boundary conditions on the global temperature distribution was analysed. Second, the equilibrium conversion matrix was calculated using the singular value decomposition (SVD) truncation method under homogeneous boundary conditions. Using this matrix, a lower-dimensional microwave heating ODE model was further obtained. Finally, the numerical simulation results showed that the root mean square error (RMSE) was only 0.07 and the maximum relative error was only −0.85%. The computation time of the equilibrium conversion matrix was 2.12 ∼ 3.00 ms, and the model calculation time was reduced by 97.78%. We compared the calculated temperature rise curves with those obtained using the conventional COMSOL model. The SVD truncation method achieved an efficient and accurate solution for the microwave heating model.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"6 8","pages":"238 - 258"},"PeriodicalIF":1.5,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72447450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Drops deformation influence on the microwaves interaction with a magnetodielectric emulsion 降低变形对磁介电乳液微波相互作用的影响

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2022-10-31 DOI: 10.1080/08327823.2022.2141043

S. Turkin, Yuri Dikansky, A. Zakinyan

引用次数: 0

Dielectric behavior of soil as a function of frequency, temperature, moisture content and soil texture: a deep neural networks based regression model 频率、温度、含水量和土壤质地对土壤介电特性的影响:基于深度神经网络的回归模型

IF 1.5 4区工程技术

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2022-07-22 DOI: 10.1080/08327823.2022.2103630

Prachi Palta, Prabhdeep Kaur, K. S. Mann

{"title":"Dielectric behavior of soil as a function of frequency, temperature, moisture content and soil texture: a deep neural networks based regression model","authors":"Prachi Palta, Prabhdeep Kaur, K. S. Mann","doi":"10.1080/08327823.2022.2103630","DOIUrl":"https://doi.org/10.1080/08327823.2022.2103630","url":null,"abstract":"Abstract Dielectric behavior of soil has utmost applications in microwave remote sensing and soil treatment. In the present study, the soil's dielectric properties (Ɛ' and Ɛ\") were measured using the vector network analyzer and an open-ended coaxial probe (85070E, Agilent Technologies) in the region of 0.2 to 14 GHz. The observed results showed that Ɛ' and Ɛ\" strongly depend on frequency, texture, moisture content and temperature. A deep neural network (DNN) based multivariable regression model has been developed to model their behavior, using experimentally observed data to learn its parameters automatically. It shows a five-fold cross-validation root mean square errors (RMSE) of 0.0258 and 0.0336, and R2-scores of 1.0000 and 0.9998, between actual recorded and predicted values of Ɛ' and Ɛ\", respectively. The results of the proposed DNN-based model have been compared with the response surface method (RSM) based model; among these, the DNN-based model shows significantly better results. Further, the DNN-based estimates of Ɛ' and Ɛ\" for loam texture at a moisture content of 18% (i.e. in between observed experiments of 15% and 20%) are made and plotted with actual observed values at 15% and 20% to verify the predictive ability of the proposed DNN-based model. It shows an acceptable estimate of dielectric properties and the effectiveness of the fast and innovative DNN-based approach for predicting soil's dielectric properties depending upon multiple factors.","PeriodicalId":16556,"journal":{"name":"Journal of Microwave Power and Electromagnetic Energy","volume":"25 1","pages":"145 - 167"},"PeriodicalIF":1.5,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75022366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1