Journal of Microwaves, Optoelectronics and Electromagnetic Applications最新文献_第9页

Mathematical Model of a Square Waveguide Polarizer with Diaphragms 方形波导膜片偏振器的数学模型

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-12-01 DOI: 10.1590/2179-10742021v20i41368

A. Bulashenko, S. Piltyay, O. Bulashenko

引用次数: 9

Electro-Optical Modulator Requirements for 1 Tb/s per Channel Coherent Systems 每通道1tb /s相干系统的电光调制器要求

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-12-01 DOI: 10.1590/2179-10742021v20i41211

S. Rossi, T. Sutili, Andre L. N. Souza, R. Figueiredo

引用次数: 1

Multi-Symmetric Level (MSL) Optimization Technique Based on Genetic Algorithm for Photonic Devices Design 基于遗传算法的光子器件设计多对称水平优化技术

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-12-01 DOI: 10.1590/2179-10742021v20i41338

M. S. Gonçalves, C. H. Silva-Santos, Wilton M. Ferraz Júnior, F. Arnold

引用次数: 0

An Analysis of Minor Hysteresis Loops Behavior under PWM Voltage - Electromagnetic Device at No-Load and Loaded Conditions PWM电压电磁装置空载和负载条件下小磁滞回路的特性分析

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-12-01 DOI: 10.1590/2179-10742021v20i4254768

R. A. Elias, C. A. C. Wengerkievicz, Guilherme H. Souza Reis, N. Sadowski, N. Batistela, J. Bastos

引用次数: 0

A New Method for Iron Loss Separation 一种新的铁损分离方法

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-11-15 DOI: 10.1590/2179-10742021v20i4254770

Filomena B. R. Mendes, Fredy M. S. Suárez, N. Batistela, J. Leite, N. Sadowski, J. Bastos

{"title":"A New Method for Iron Loss Separation","authors":"Filomena B. R. Mendes, Fredy M. S. Suárez, N. Batistela, J. Leite, N. Sadowski, J. Bastos","doi":"10.1590/2179-10742021v20i4254770","DOIUrl":"https://doi.org/10.1590/2179-10742021v20i4254770","url":null,"abstract":"Abstract In this work we propose a new method to separate iron losses by removing low frequency tests and reducing the number of experiments. The article deals with methodologies that use numerical methods to find the mathematical model coefficients of magnetic loss separation in hysteresis loss (Wh), eddy current loss (Wed) and excess loss (Wex). Three methodologies are presented and depend on experimental tests such as (i) varying magnetic induction Bm and constant supply frequency (f) of 50 Hz, (ii) constant magnetic induction around 1 T and varying frequency. The first methodology is based on Newton’s method to solve the numerical system generated with experimental data from two laboratory experiments. These data were reported in past references. Another two methodologies are based on genetic algorithms (GA). One of them depends on experimental data from both experiments and the another depends on experimental data only from experiment (i). Results indicate that genetic algorithms method presents excellent solutions in comparison with other ones. The GA method with two tests allows a better representation of the experimental behavior of the sample with maximum errors varying from 1.10% to 0.20%. In GA method with one test, minimization varied from 6.924 × 10−05 to 3.186 × 10−05.","PeriodicalId":53567,"journal":{"name":"Journal of Microwaves, Optoelectronics and Electromagnetic Applications","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42420578","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

Methodology for Minimizing Electric Field at Ground Level from Transmission Lines Using Sensitivity Analysis 利用灵敏度分析最小化输电线路地面电场的方法

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-11-15 DOI: 10.1590/2179-10742021v20i4254763

A. Paganotti, R. Saldanha, A. C. Lisboa, M. Afonso, M. Q. Melo, M. Schroeder

引用次数: 1

Entire-Domain Basis Function with Segmented Edge Condition Applied for Scattering Structures 具有分段边缘条件的整个域基函数在散射结构中的应用

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-09-01 DOI: 10.1590/2179-10742021v20i31197

E. Schlosser, M. Heckler, J. Bergmann

引用次数: 0

Tri-Band, Stable and Compact Patch Frequency Selective Surface Optimized via Hybrid Bioinspired Computing for Applications at 2.4, 3.5 and 5.8 GHz 三波段，稳定和紧凑的贴片频率选择表面通过混合生物启发计算优化应用于2.4,3.5和5.8 GHz

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-09-01 DOI: 10.1590/2179-10742021v20i31120

Flávio H. C. S. Ferreira, J. Araújo, A. Gomes Neto, I. B. G. Coutinho, F. Barros, G. Cavalcante, M. C. A. Alcântara Neto

{"title":"Tri-Band, Stable and Compact Patch Frequency Selective Surface Optimized via Hybrid Bioinspired Computing for Applications at 2.4, 3.5 and 5.8 GHz","authors":"Flávio H. C. S. Ferreira, J. Araújo, A. Gomes Neto, I. B. G. Coutinho, F. Barros, G. Cavalcante, M. C. A. Alcântara Neto","doi":"10.1590/2179-10742021v20i31120","DOIUrl":"https://doi.org/10.1590/2179-10742021v20i31120","url":null,"abstract":"Abstract This work addresses the synthesis of a multi-band frequency selective surface (FSS) through bioinspired computing and a general regression neural network (GRNN). This hybrid computational method, which utilizes the multi-objective cuckoo search algorithm combined to a GRNN, determine the best physical dimensions of the FSS in order to achieve a multi-band filtering at the 2.4, 3.5 and 5.8 GHz spectrums. Therefore, the results are to be applied to aid the propagation of Wi-Fi, WLAN, WiMAX and future sub-6 GHz 5G systems. The resonant frequencies were measured and a -10 dB cutoff value has been considered for the transmission coefficient. The triple rectangular loop conductor geometry of the device is printed upon a glass epoxy (FR-4) substrate. Measurements were made for different wave incidence angles, from 0° up to 45°, to demonstrate how signal incidence would affect the device’s functioning. The agreement between simulated and measured data display satisfactory results.","PeriodicalId":53567,"journal":{"name":"Journal of Microwaves, Optoelectronics and Electromagnetic Applications","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48844552","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

SIW Based Cavity Backed Self-Quadplexing Slot Antenna 基于SIW的背腔自四弯缝隙天线

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-09-01 DOI: 10.1590/2179-10742021v20i31213

P. Nigam, A. Muduli, Sandeep Sharma, A. Pal

{"title":"SIW Based Cavity Backed Self-Quadplexing Slot Antenna","authors":"P. Nigam, A. Muduli, Sandeep Sharma, A. Pal","doi":"10.1590/2179-10742021v20i31213","DOIUrl":"https://doi.org/10.1590/2179-10742021v20i31213","url":null,"abstract":"Abstract In this paper, a low profile substrate integrated waveguide (SIW) based self-quadplexing antenna with high isolation is demonstrated for multiband wireless applications. Here the SIW based resonator cavity is integrated with an “X”-shaped resonator and formed the four quarter mode cavities having the individual microstrip feed lines. Each quarter mode cavity consists of “V”-shaped slots of different lengths; are in front to feed line and produce the four distinct resonant frequencies at 7.8 GHz, 8.5 GHz, 10.2 GHz, and 10.6 GHz, respectively. The working principle depends upon the perturbation of higher-order modes in a particular quarter mode cavity. The minimum intrinsic isolation of below than −26dB is attained between any of the two input ports by adequately modifying the antenna dimensions. Hence, a single antenna consists of four individual signals without interfering with each other, which determines the self-quadplexing property of the antenna. The proposed antenna is realized for maximum efficiency and minimum value of frequency ratio. The measured gain of the proposed antenna is 4.5 dBi, 5.28 dBi, 7.1 dBi, and 7.4 dBi at the four resonant frequencies, respectively.","PeriodicalId":53567,"journal":{"name":"Journal of Microwaves, Optoelectronics and Electromagnetic Applications","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48102779","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

Efficiency Determination of Compressor Embedded Induction Motors 压缩机嵌入式感应电动机的效率测定

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2021-09-01 DOI: 10.1590/2179-10742021v20i3254761

C. A. C. Wengerkievicz, Cristian F. Mazzola, N. Sadowski, N. Batistela, Ernane Silva, C. Deschamps

引用次数: 0