IEEE Antennas and Wireless Propagation Letters最新文献_第3页

Efficient Machine Learning-Assisted Multiobjective Antenna Design for Internet-of-Things Applications 面向物联网应用的高效机器学习辅助多目标天线设计

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-22 DOI: 10.1109/LAWP.2025.3532623

Wen Tao Li;Han Qi Li;Lei Li;Yong Qiang Hei;Xiao Wei Shi

{"title":"Efficient Machine Learning-Assisted Multiobjective Antenna Design for Internet-of-Things Applications","authors":"Wen Tao Li;Han Qi Li;Lei Li;Yong Qiang Hei;Xiao Wei Shi","doi":"10.1109/LAWP.2025.3532623","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3532623","url":null,"abstract":"In this letter, an efficient machine learning framework tailored for multiobjective antenna design is proposed. A hybrid neural network is designed as the decoder for training, possessing the ability to automatically determine the optimal number of network layers. This adaptability vastly speeds up electromagnetic (EM) response generation for antennas, eliminating the need for intensive EM simulations. Subsequently, encoders, mapping networks, and pretrained decoders are sequentially connected to train the encoders and mapping network, with the purpose of learning features associated with multiple metrics. To this end, when the multiobjective changes, our proposed framework has the merit of facilitating swift retraining of the neural network. Simulation results of an split-ring resonator (SRR)-loaded patch antenna and an 8-element multiple-input–multiple-output antenna, both for Internet-of-Things (IoT) terminals, are provided to verify the proposed framework. The two antennas, respectively, achieve bandwidths of 6 GHz (21.20 GHz to 27.20 GHz) and 2.76 GHz (3.26 GHz to 6.02 GHz). Numerical results reveal the superiority and effectiveness of the proposed framework.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1263-1267"},"PeriodicalIF":3.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Locally Optimal Periods in Periodic Optically Transparent Two-Metal-Layered Refractive Metasurfaces for Outdoor-to-Indoor Communication 用于室内外通信的周期性光透明双金属层折射率超表面的局部最优周期

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-21 DOI: 10.1109/LAWP.2025.3532301

Byeongjin Kim;Seungwoo Bang;Sunghyun Kim;Doyle Kwon;Seongkwan Kim;Jungsuek Oh

引用次数: 0

High-Order-Mode Antenna With Pattern Reconfigurability for Intelligent IoT Applications 智能物联网应用中具有模式可重构性的高阶模天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-21 DOI: 10.1109/LAWP.2025.3532352

Zhan Wang;Yuandan Dong

{"title":"High-Order-Mode Antenna With Pattern Reconfigurability for Intelligent IoT Applications","authors":"Zhan Wang;Yuandan Dong","doi":"10.1109/LAWP.2025.3532352","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3532352","url":null,"abstract":"This letter introduces a novel high-gain, high-order-mode-based pattern-reconfigurable antenna designed for intelligent wireless applications. To achieve a higher gain, a high-order-mode slot radiator is employed. Then, by manipulating the field distributions of the long slot, different excitation modes are activated, leading to the development of a novel high-order-mode control concept. The long slot can switch between broadside and dual-beam patterns by exciting different slot modes (full-wavelength slot or second-order slot mode). To validate the high-order-mode control concept, a pattern-reconfigurable slot antenna is designed, fabricated, and measured. By switching different feeding paths, the reconfigurable antenna can obtain a pair of complementary beams. Besides, the measured peak gains for these two modes are 11.1 dBi and 7.0 dBi, respectively. The proposed reconfigurable antenna boasts a simple yet ingenious structure (low cost), high gain, broadband capabilities, and excellent pattern diversity. It is an ideal candidate for intelligent wireless applications, including Internet of Things (IoT), WiFi, Fiber-to-the-Room (FTTR), and microcells.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1258-1262"},"PeriodicalIF":3.7,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wideband Slot Antenna Array With Stable Low-Sidelobe Performance 具有稳定低旁瓣性能的宽带缝隙天线阵列

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-20 DOI: 10.1109/LAWP.2025.3532116

Fengyuan Zhang;Hanlin Zhang;Qingchun You;Jifu Huang

引用次数: 0

Compact Shared-Aperture Wideband Endfire Antennas Embedded in a Heteromorphic Cavity 异型腔内嵌入的紧凑型共享孔径宽带端射天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-20 DOI: 10.1109/LAWP.2025.3531566

Xi Chen;Hexiang Kong;Xinyu Liu

{"title":"Compact Shared-Aperture Wideband Endfire Antennas Embedded in a Heteromorphic Cavity","authors":"Xi Chen;Hexiang Kong;Xinyu Liu","doi":"10.1109/LAWP.2025.3531566","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3531566","url":null,"abstract":"In this letter, a novel scheme for dual wideband endfire antennas operating within a shared aperture is presented. Confined by the installation aperture, we have developed a low-frequency (S-C band) endfire antenna (L-EFA) and a high-frequency (X band) endfire antenna (H-EFA), both coexisting in a compact metallic heteromorphic cavity. The L-EFA is developed from a half-mode tapered slot radiator, integrating slotted lines and gradient pectinate top loading to achieve optimal impedance matching while preserving a low-profile (0.13<inline-formula><tex-math>$lambda_text{L}$</tex-math></inline-formula>) design. Positioned in front of the L-EFA, the H-EFA employs a small and lightweight dielectric lens to ensure wide and stable azimuth radiation patterns. The design of the compact metallic cavity has been optimized to enhance wideband impedance matching and maximize radiation efficiency for both antennas. To validate this scheme, we fabricated and measured prototypes embedded within a metallic cylinder. The dimensions of the cavity are limited to 0.38<inline-formula><tex-math>$lambda_text{L}$</tex-math></inline-formula> × 0.54<inline-formula><tex-math>$lambda_text{L}$</tex-math></inline-formula> (where <inline-formula><tex-math>$lambda_text{L}$</tex-math></inline-formula> represents the wavelength at the lowest operational frequency). Measurement results demonstrate that shared-aperture antennas effectively cover dual bandwidths of 2.1 GHz to 6 GHz and 6 GHz to 18 GHz, while exhibiting stable endfire radiation performance with high radiation efficiency (≥85%) across both operational bands.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1243-1247"},"PeriodicalIF":3.7,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Estimation Method of Time Step Bound in DGTD for Periodic Structure Analysis 用于周期结构分析的DGTD时间步长界估计方法

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3530873

Ming Yu Xi;Yan Shi;Shi Chen Zhu;Jia Hao Zhang;Zhe Xin Luo

引用次数: 0

Theory of an Arbitrarily Oriented Multifeed Linear Antenna in a Cold Magnetoplasma 冷磁等离子体中任意取向多馈源线性天线理论

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3531111

Yu Li;Zheng Xu Li;Hui Ran Zeng;Tong He;Kai Li

引用次数: 0

A Broadband High-Power Mode Transducer Used for Horn Antennas 用于喇叭天线的宽带大功率模式换能器

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3531201

Hai-Xu Liu;Yong-Hong Zhang;Xiao-Dong Gong

引用次数: 0

Improved Measurement Method With Distance Correction of the Near-Field Radar Cross Section 改进的近场雷达截面距离校正测量方法

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3530975

Lin Qin;En Li;Chong Gao;Jinshi Liu;Haoyu Wen;Hui Zhu;Yong Gao;Yunpeng Zhang;Chengyong Yu;Jiawei Long

{"title":"Improved Measurement Method With Distance Correction of the Near-Field Radar Cross Section","authors":"Lin Qin;En Li;Chong Gao;Jinshi Liu;Haoyu Wen;Hui Zhu;Yong Gao;Yunpeng Zhang;Chengyong Yu;Jiawei Long","doi":"10.1109/LAWP.2025.3530975","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3530975","url":null,"abstract":"Near-field radar cross section (RCS) measurement is an important method for determining the RCS of a target. For near-field RCS measurements, the distance between the target and the antenna is insufficient for far-field measurements. The far-field RCS of the target is derived from the near-field data based on a multiple scattering center model. Conventional algorithms make several approximate assumptions about the measurement distance, which results in the calculated far-field RCS being independent of the measurement distance, introducing unnecessary RCS measurement errors. We propose a near-field quasi-monostatic RCS measurement distance correction method. In addition, the components related to the measurement distance are separated and corrected in the near-field to far-field transformation (NF2FFT) algorithm. Finally, the method was used to calculate the RCS of a metal plate and a metal cylinder for the different distances in the simulation and practical measurement in X band. The final results show that the method reduces the average RCS error by 0.64 dB for a 500 mm × 100 mm × 4 mm metal plate at 2 m measurement distance in the X band, confirming the effectiveness of the proposed method.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1223-1227"},"PeriodicalIF":3.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Band Antenna With 2.4 GHz Omnidirectional and 5.8 GHz Pattern-Reconfigurable Radiation Modes 2.4 GHz全向和5.8 GHz模式可重构辐射模式双频天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3531482

Sen Lin;Yunfei Cao;Fangjiong Chen;Quan Xue;Wenquan Che

引用次数: 0