Progress in Electromagnetics Research C最新文献

Angle Independent Metamaterial Absorber for S and C Band Application S和C波段应用的角度无关超材料吸收体

Progress in Electromagnetics Research C Pub Date : 2023-07-06 DOI: 10.2528/pierc22120501

Goriparthi Rajyalakshmi, Y. Ravikumar, D. Ramakrishna, Samba Siva Rao Kumbha

{"title":"Angle Independent Metamaterial Absorber for S and C Band Application","authors":"Goriparthi Rajyalakshmi, Y. Ravikumar, D. Ramakrishna, Samba Siva Rao Kumbha","doi":"10.2528/pierc22120501","DOIUrl":"https://doi.org/10.2528/pierc22120501","url":null,"abstract":"\u0000 In this paper, the development and designing of angle-independent metamaterial microwave absorbers are presented. The unit cell consists of two concentric circle that are linked by consolidated resistors. The absorber is built on a dielectric substrate (FR4) with a thickness of 3.2 mm (λ/0.07) and a dielectric constant of 4.3. The wideband absorption is acquired in the range of 2.8 to 10.42 GHz with a wide band of 7.62 GHz with absorptivity above 90%. In the area of interest, a flat band is obtained, and to examine the current distribution and electric field in the respective region, two peaks are considered at a frequency of 3.66 and 9.54 GHz, with maximum absorptivity of 99.99% and 99.44%, respectively. The presented absorber is examined under different angles for phi and theta variation. From the phi variation, it is observed that for all the angles, absorptivity does not vary, which confirms that the absorber is acting as an angle independent. The fabricated sheet consists of an array of a unit cell, which is examined inside the anechoic chamber with the help of two horn antennas and vector network analyzer. The tested and simulated results are compared, and it was observed that they are close in their agreement. At the end of the manuscript, the presented and already reported arts are compared, and it is observed that the presented one operates for the low frequency with higher bandwidth. The presented absorber can be practically used for defense applications for Radar Cross Sections reduction.","PeriodicalId":20699,"journal":{"name":"Progress in Electromagnetics Research C","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48744752","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}

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Method for Calculating True Value of Landslide Deformation Based on Micro Deformation Monitoring Radar 基于微变形监测雷达的滑坡变形真值计算方法

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23032004

Yaolong Qi, Lei Zhang, Weixian Tan, Pingping Huang, Zhonggen Wei, Haikun Liu

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A Conformal Wearable Antenna Based on Artificial Magnetic Conductor for GPS Applications 基于人工磁导体的GPS保形可穿戴天线

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23080804

Shuqi Wang, Yuqin Shi

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A Novel Design Method for Unequal Coupled Line Dual-band Wilkinson Power Divider 非等耦合线双带威尔金森功率分压器的一种新设计方法

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23091701

Puria Salimi, Mohsen Katebi Jahromi, Alireza Khoddam Astaneh Hossein

引用次数: 0

Coupling Analysis of Multi-physical Fields of Magnetic Gear Motor with Nonuniform Air-gap Halbach Array Magnetization 非均匀气隙Halbach阵列磁化磁性齿轮电机多物理场耦合分析

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23061402

Zhangtao Kui, Kun Yang, Weizhao Tang, Libing Jing

{"title":"Coupling Analysis of Multi-physical Fields of Magnetic Gear Motor with Nonuniform Air-gap Halbach Array Magnetization","authors":"Zhangtao Kui, Kun Yang, Weizhao Tang, Libing Jing","doi":"10.2528/pierc23061402","DOIUrl":"https://doi.org/10.2528/pierc23061402","url":null,"abstract":"|In this paper, a novel magnetic gear motor (MGM) with nonuniform air gap Halbach array magnetization is proposed to study the in(cid:13)uence of temperature change on its electromagnetic performance. The inner PM adopts the Halbach array magnetization structure, which makes the inner rotor air gap have an uneven air gap structure, thereby improving the air gap (cid:13)ux density. In addition, the air gap magnetic (cid:12)eld of MGM is analyzed by the (cid:12)nite element method (FEM), and the 3D model of the motor is established. The main losses of the motor, including copper loss, eddy current loss, and hysteresis loss are coupled to each component as a thermal source and studied by magneto-thermal coupling. The transient variation characteristics of loss distribution during MGM operation are comprehensively considered. The temperature variation of each component of the MGM with time during load operation is studied in detail. The results show that the temperature of the PM of the MGM is close to 91.8 ◦ C when the rated load is running, and the PM of the motor does not undergo irreversible demagnetization.","PeriodicalId":20699,"journal":{"name":"Progress in Electromagnetics Research C","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496150","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}

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Compact Reconfigurable Patch Antenna for Wirelesss Applications 无线应用的紧凑型可重构贴片天线

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23090102

Prathipati Rakesh Kumar, Pamarthi Sunitha, Mokkapat Venkata Siva Prasad

引用次数: 0

Compact Wideband Four Elements MIMO Antenna for 5G Applications 5G应用的紧凑型宽带四元MIMO天线

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23051501

Shubhangi Mangesh Verulkar, Alka Khade, Mahadu Annarao Trimukhe, Rajiv Kumar Gupta

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Three-dimensional Imaging Method of Target Based on Time-domain Sparse Representation of Multi-view SAR Data 基于多视点SAR数据时域稀疏表示的目标三维成像方法

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23031002

Jinrong Zhong, Shengqi Liu, Xing Zhang

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A Multi-slot UWB Monopole Antenna with Dual Band Notch Characteristics 一种具有双带陷波特性的多槽超宽带单极天线

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23071401

Pasumarthi Srinivasa Rao, Bondili Siva Hari Prasad, Jagabathuni Kavitha, Uppala Jayaram

引用次数: 0

Performance Improvement of the Vertical Cavity Surface Emitting Laser Based on Active Hybrid Design and MIMO Configuration 基于主动混合设计和MIMO配置的垂直腔面发射激光器性能改进

Progress in Electromagnetics Research C Pub Date : 2023-01-01 DOI: 10.2528/pierc23080710

Mohammed Quasim, Haider J. Abd

{"title":"Performance Improvement of the Vertical Cavity Surface Emitting Laser Based on Active Hybrid Design and MIMO Configuration","authors":"Mohammed Quasim, Haider J. Abd","doi":"10.2528/pierc23080710","DOIUrl":"https://doi.org/10.2528/pierc23080710","url":null,"abstract":"|The performance of the Vertical Cavity Surface Emitting Laser (VCSEL) for hybrid optical links SMF/FSO based on diﬀerent data rates and MIMO con(cid:12)guration techniques was obtained using OptiSystem TM which is close to the results of the experimental system. The developed system was tested with various transmission distances: 20, 30, 40, and 50 km, and in the existence of many con(cid:12)guration kinds and modulations. In addition to that, the hybrid system was estimated with diﬀerent weather cases: clear, rain, and snow. The results state that the performance of the OOK-NRZ system is better than OOK-RZ system under the same conditions. Also, the performance of the free space link is better than the (cid:12)ber link for most of the considered link ranges and con(cid:12)gurations. For OOKNRZ of the (cid:12)ber link, it was found that the MIMO 8 (cid:2) 8 technique has better system performance than other con(cid:12)gurations, and the Q-factor = 11 : 39 and BER = 5 : 4 (cid:2) 10 (cid:0) 30 for a length of 50 km while for the FSO link, it was found that MIMO 8 (cid:2) 8 indicates a high performance for Q-factor = 12 : 7 and BER = 1 : 8 (cid:2) 10 (cid:0) 37 . The maximum FSO link distances under diﬀerent weather conditions and coupling ratios were found. For BER (cid:20) 10 (cid:0) 9 , in NRZ format for SMF 50 km utilizing MISO 8 (cid:2) 1 technology in clear weather for 10 Gbps, 15 Gbps, and 20 Gbps for FSO links, the maximum accessible lengths are 0.6 km, 0.51 km, and 0.43 km, respectively. The process is expanded to include snow conditions for data rates of 10 Gbps, 15 Gbps, and 20 Gbps for FSO links with lengths of 0.4 km, 0.3 km, and 0.26 km, respectively.","PeriodicalId":20699,"journal":{"name":"Progress in Electromagnetics Research C","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843405","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