Journal of Microwaves, Optoelectronics and Electromagnetic Applications最新文献_第4页

Coexistence Analysis Between IMT-2020 and AES operating in L Band on a Final Approach L波段IMT-2020与AES的共存分析

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2023-03-01 DOI: 10.1590/2179-10742023v22i1270772

L. Alexandre, A. Linhares, T. H. Brandão, I. F. D. Costa, Arismar Cerqueira S. Jr.

{"title":"Coexistence Analysis Between IMT-2020 and AES operating in L Band on a Final Approach","authors":"L. Alexandre, A. Linhares, T. H. Brandão, I. F. D. Costa, Arismar Cerqueira S. Jr.","doi":"10.1590/2179-10742023v22i1270772","DOIUrl":"https://doi.org/10.1590/2179-10742023v22i1270772","url":null,"abstract":"− This paper is regarding the statistical coexistence analysis between a cluster of International Mobile Telecommunication 2020 (IMT-2020) Base Stations and an Aircraft Earth Station (AES) operating during flight time in the L Band on a final approach. We assess the cumulative distribution function (CDF) of interference-over-noise ratio (INR) considering the fuselage attenuation contribution and compare it with the AES protection criteria. Our coexistence analysis approach considers the use of a high gain AES commercial antenna model, for an aircraft at two different altitudes, 187 m and 83 m, for 3600 m and 1600 m of horizontal distance from the runway threshold, respectively. Therefore, considering the IMT-2020 suburban scenario near the airport, simulation results presented an INR that met the protection criteria for 100% and 99.95% of the time for the distances of 3600 m and 1600 m from the runway, respectively, making the spectrum sharing feasible between systems. To the best of our knowledge, this is the first time in the literature that fuselage attenuation","PeriodicalId":53567,"journal":{"name":"Journal of Microwaves, Optoelectronics and Electromagnetic Applications","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47568180","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

Microstrip 3-Bit Fractal-based Phase Shifter 微带3位分形移相器

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4259521

L. P. Pontes, E. M. F. D. Oliveira, C. P. N. Silva, A. G. Barboza, M. T. Melo, I. Llamas-Garro

引用次数: 0

Experimental Loss Segregation in a Solid Rotor Induction Motor 实心转子异步电动机损耗偏析的实验研究

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4268098

C. A. C. Wengerkievicz, N. Batistela, N. Sadowski, Thomas Huguet, Y. Lefèvre

引用次数: 1

Electromagnetic Transients in Multiconductor Transmission Lines 多导体传输线中的电磁暂态

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4268097

R. R. A. Coelho, Domingos T. da Silva Neto, J. Cardoso

引用次数: 1

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air 空气中针平面几何中局部放电产生的电流脉冲和声波的模拟

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4263644

Luís Victor Muller Fabris, J. Silva

引用次数: 1

A Wideband and Wide Axial Ratio Bandwidth Circularly Polarized Antenna Loaded with Circular Ring Slot 一种宽带宽轴比环形槽负载圆极化天线

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4264867

S. Patil, A. Verma, A. Pandey, Amit Kumar Kesarwani, V. Pandey, V. Kapse

引用次数: 0

A High-Gain Hemispherical Dielectric Lens Antenna Operating Simultaneously in Narrowband or Wideband for X-band Applications 一种用于x波段应用的窄带或宽带同时工作的高增益半球形介质透镜天线

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4262508

R. A. D. Santos, G. L. Fre, D. Spadoti

引用次数: 0

Design and Simulation of Broadband Horn Nanoantennas for Nanophotonic Applications 用于纳米光子应用的宽带喇叭纳米天线的设计与仿真

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4268099

Larissa da Silva Brito, R. A. Felix

引用次数: 0

Methodology to Generate a Reluctance Network Applied to Permanent Magnet Synchronous Generators 永磁同步发电机磁阻网络的生成方法

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4268100

João Vitor Gerevini Kasper, P. Kuo-Peng, T. Bazzo, Gustavo Garbelini de Menezes

引用次数: 0

Equipment for Monitoring Synchronous Generators Condition through External Magnetic Field Waveforms 通过外磁场波形监测同步发电机状态的设备

Journal of Microwaves, Optoelectronics and Electromagnetic Applications Pub Date : 2022-12-01 DOI: 10.1590/2179-10742022v21i4268102

L. O. S. Grillo, C. A. C. Wengerkievicz, H. F. Santos, N. Batistela, P. Kuo-Peng, N. Sadowski, T. K. Matsuo, C. Souza, L. M. D. Freitas, R. J. Nascimento

{"title":"Equipment for Monitoring Synchronous Generators Condition through External Magnetic Field Waveforms","authors":"L. O. S. Grillo, C. A. C. Wengerkievicz, H. F. Santos, N. Batistela, P. Kuo-Peng, N. Sadowski, T. K. Matsuo, C. Souza, L. M. D. Freitas, R. J. Nascimento","doi":"10.1590/2179-10742022v21i4268102","DOIUrl":"https://doi.org/10.1590/2179-10742022v21i4268102","url":null,"abstract":"— This paper presents an equipment for monitoring synchronous generators condition through characteristics of the time derivative of the external magnetic field. The developed monitoring methodology allows the identification of established or incipient faults, by detecting changes in the magnetic signature of the synchronous generator. In this methodology, the measurement of signals outside the machine gives this equipment a non-invasive characteristic, allowing its monitoring without interfering or disturbing its operation. The developed system includes the specification of magnetic field sensors, signal measurement and processing equipment, as well as software for analysis and monitoring. The validation of the methodology used in this system was carried out through the analysis of experimental data, presenting efficient results in the detection of electrical and mechanical faults in synchronous generators of an experimental test bench and a hydroelectric power plant. As a result, the commercial specification of this equipment was obtained and two units were implemented in a hydroelectric power plant to monitor 305 MVA synchronous generators.","PeriodicalId":53567,"journal":{"name":"Journal of Microwaves, Optoelectronics and Electromagnetic Applications","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49623459","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