IEEE Antennas and Wireless Propagation Letters最新文献_第4页

Dual-Beam Dual-Circularly Polarized Leaky Elliptical Waveguide Antenna With 2×2 MIMO Capability 具有2×2 MIMO能力的双波束双圆极化漏椭圆波导天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-17 DOI: 10.1109/LAWP.2026.3724503

Jian-Xin Chen;Xin- Yu Huang;Longlong Lin;Yi-Xuan Huang;Yun-Li Li

{"title":"Dual-Beam Dual-Circularly Polarized Leaky Elliptical Waveguide Antenna With 2×2 MIMO Capability","authors":"Jian-Xin Chen;Xin- Yu Huang;Longlong Lin;Yi-Xuan Huang;Yun-Li Li","doi":"10.1109/LAWP.2026.3724503","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3724503","url":null,"abstract":"Dual-beam and dual-polarized leaky-wave antennas (LWAs) can provide spatial and polarization diversity within a single radiating structure, which is attractive for multiple-input–multiple-output (MIMO) systems. This letter presents a dual-beam dual-circularly polarized (CP) leaky elliptical waveguide antenna (LEWGA) with 2 × 2 MIMO capability. The proposed design utilizes the TEc11 mode of the elliptical waveguide, where the optimal slot positions for CP radiation are theoretically determined. A dual-slot unit cell is further introduced to simultaneously suppress the open stopband (OSB) and undesired higher-order space harmonics, enabling stable dual-beam CP radiation across the operating band. Measured results show that the proposed antenna operates from 5.1 GHz to 5.9 GHz with axial ratios below 3 dB and a peak realized gain of 10.84 dBi. The antenna generates orthogonal left- and right-hand CP beams from two ports within a single waveguide structure and exhibits excellent cross-polarization isolation for 2 × 2 MIMO operation. The proposed design provides an effective dual-diversity solution for MIMO LWAs.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4058-4062"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125445","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

Modeling Study on the Influence of Spatial Distribution of Loop Magnetic Field on the Propagation of Low Frequency Electromagnetic Waves in Plasma 环形磁场空间分布对等离子体中低频电磁波传播影响的建模研究

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-25 DOI: 10.1109/LAWP.2026.3727689

Shaoshuai Guo;Kai Xie;Maixia Fu;Zhaoying Wang

{"title":"Modeling Study on the Influence of Spatial Distribution of Loop Magnetic Field on the Propagation of Low Frequency Electromagnetic Waves in Plasma","authors":"Shaoshuai Guo;Kai Xie;Maixia Fu;Zhaoying Wang","doi":"10.1109/LAWP.2026.3727689","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3727689","url":null,"abstract":"Low-frequency (LF) communication (1 MHz to 30 MHz) presents a promising pathway to mitigate reentry communication blackout. To overcome transmission limitations in high-density plasma sheaths and narrow bandwidth constraints, this work proposes a novel magnetic window strategy utilizing loop-distributed magnetic field modulation. By constructing a periodic magnetic field configuration aligned with plasma-induced loop currents, the scheme leverages weak-field integral effects to globally suppress induced currents, significantly enhancing LF wave transmissivity. An equivalent circuit model is derived and validated by numerical simulation. The results demonstrate that at 100 MHz, signal attenuation <inline-formula><tex-math>$S_{H}$</tex-math></inline-formula> reliably exceeds the <inline-formula><tex-math>$-{text{30}}$</tex-math></inline-formula> dB blackout threshold under optimized field parameters. The method achieves 25 dB to 30 dB attenuation reduction across a broad collision frequency range (0.1 GHz to 10 GHz), substantially outperforming nonmagnetic scenarios. This approach establishes an efficient, lightweight magnetic window solution for LF reentry communication systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4143-4147"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125517","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 Active Frequency Selective Surface With Independent Frequency and Amplitude Tunability 具有独立频率和幅度可调性的双频主动频率选择表面

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-10 DOI: 10.1109/LAWP.2026.3721632

Xuanye Wu;Juan Chen;Jianfeng Yang

{"title":"Dual-Band Active Frequency Selective Surface With Independent Frequency and Amplitude Tunability","authors":"Xuanye Wu;Juan Chen;Jianfeng Yang","doi":"10.1109/LAWP.2026.3721632","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3721632","url":null,"abstract":"This letter presents an active, dual-band frequency selective surface (ADDFSS) with miniaturized unit cells and independent frequency and amplitude tunabilities. The structure consists of a top graphene sandwich structure (GSS), an intermediate polymethyl methacrylate spacer, and a bottom reconfigurable FSS. Biasing varactors in different resonant units enables independent tuning of the two passbands. The low and high bands cover 1.61 GHz to 3.82 GHz and 2.54 GHz to 6.54 GHz, with relative bandwidths of 81.4% and 88.1%, respectively. Increasing the GSS bias from 0 V to 4 V lowers the graphene sheet resistance from about 230 <inline-formula><tex-math>$Omega$</tex-math></inline-formula>/sq to 60 <inline-formula><tex-math>$Omega$</tex-math></inline-formula>/sq, and enables over 54% amplitude tunability. An equivalent-circuit model agrees with the full-wave simulations and validates the independent frequency and amplitude tuning. The compact, coplanar, and conformal architecture suits adaptive radomes and electromagnetic skins requiring frequency-agile transmission and controllable in-band scattering.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"3953-3957"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124497","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

Multiband Wideband Shared-Aperture Array Based on Hybrid Electromagnetic Transparency Regulation 基于混合电磁透明调节的多频带宽带共享孔径阵列

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.1109/LAWP.2026.3723009

Jiao Yin;Bian Wu;Yu-Tong Zhao;Zhen Liu;Ying Liu;Tao Su

{"title":"Multiband Wideband Shared-Aperture Array Based on Hybrid Electromagnetic Transparency Regulation","authors":"Jiao Yin;Bian Wu;Yu-Tong Zhao;Zhen Liu;Ying Liu;Tao Su","doi":"10.1109/LAWP.2026.3723009","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3723009","url":null,"abstract":"This letter introduces a hybrid electromagnetic transparency regulation method that synergistically integrates low-loss transmission and high-impedance choke characteristics, applied to the design of a wideband multiband shared aperture array. A dual-nested square ring is employed as the fundamental transmission unit, which not only establishes the first passband over 1.7 GHz to 2.1 GHz (middle-band, MB) but also utilizes its outer ring as the radiator for the low-band (LB) antenna operating from 0.68 GHz to 0.86 GHz. Dual wideband parallel LC (PLC) resonators are subsequently incorporated into both the inner and outer square rings. At their resonance frequencies, the high-impedance characteristics effectively suppress the induced currents on the nested square rings, producing open-circuit effects that fragment the structure into discrete electrically small elements and thereby render it electromagnetically transparent, covering the two high-bands (HB, HB1: 3 GHz to 4 GHz and HB2: 4.6 GHz to 5.5 GHz). Consequently, a quad-band wideband shared-aperture array is successfully realized, demonstrating the effectiveness of the proposed hybrid design strategy.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4023-4027"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124512","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

Skeletonized Nested Iterative Solver for Characteristic Modes of Multiscale Metallic-Dielectric Objects 多尺度金属介质物体特征模态的骨架嵌套迭代求解器

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-18 DOI: 10.1109/LAWP.2026.3724999

Di Wu;Chenghong Gao;Qi Wu

引用次数: 0

A Geometric and Scattering Modeling Method for Chaff Clouds Containing Bending Fibers 含弯曲纤维箔条云的几何和散射建模方法

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.1109/LAWP.2026.3723034

Zuo Yanchun;Li Yue;Guo Lixin;Xu Jiahao;Yang Huaiyu

{"title":"A Geometric and Scattering Modeling Method for Chaff Clouds Containing Bending Fibers","authors":"Zuo Yanchun;Li Yue;Guo Lixin;Xu Jiahao;Yang Huaiyu","doi":"10.1109/LAWP.2026.3723034","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3723034","url":null,"abstract":"Chaff cloud is one of the effective passive jammers for target covering. The target releases generous of chaff fibers to generate strong radar echoes, thereby preventing radars from locking onto the valid target. Previous studies on the geometric and scattering modeling of the chaff cloud often idealized the chaff fiber as finite-length straight conductors. However, chaff fiber is bending due to the influence of wind and gravity. This bending effect then alters the scattering properties of the chaff cloud, which leads to inaccuracies in tactical effectiveness estimations for chaff clouds. Consequently, this letter describes the bending effect of chaff fibers based on the Euler–Bernoulli beam theory. The Method of Moments with pulse basis functions is employed to calculate the scattering of the chaff clouds that contains curved fibers. The letter also explores the relationship between the distribution of impedance matrix components, the monostatic scattering of the chaff cloud, and the curvature of the fibers. The results demonstrate that the bending effect of fibers is a nonnegligible factor in evaluating the interference effectiveness of chaff clouds.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4033-4037"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124565","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

Low-Profile Dual-ISM-Band Implantable Antenna for Deep Gastrointestinal Capsule Endoscopy 用于深层胃肠胶囊内窥镜的低轮廓双ism波段植入式天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-17 DOI: 10.1109/LAWP.2026.3724756

Sarosh Ahmad;Tayeb A. Denidni

{"title":"Low-Profile Dual-ISM-Band Implantable Antenna for Deep Gastrointestinal Capsule Endoscopy","authors":"Sarosh Ahmad;Tayeb A. Denidni","doi":"10.1109/LAWP.2026.3724756","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3724756","url":null,"abstract":"This letter presents a dual-band implantable antenna for gastrointestinal capsule endoscopy operating in the 0.915 GHz and 2.45 GHz Industrial, Scientific, and Medical (ISM) bands. The proposed antenna occupies an ultracompact volume of only 4 mm × 4 mm × 0.127 mm (<bold>2.03 mm<inline-formula><tex-math>$^{3}$</tex-math></inline-formula>), making it well suited for highly space-constrained capsule platforms. Miniaturization is achieved by employing a high-permittivity Rogers RO3010 substrate together with a slot-loaded radiating element, a shorting via, and an optimized ground structure, which effectively increases the current path without enlarging the antenna footprint. The design provides −<bold>10 dB impedance bandwidths of <bold>0.88 GHz to 1.02 GHz (<bold>15.3%) and <bold>2.32 GHz to 2.60 GHz (<bold>11.4%), fully covering both target ISM bands. Performance evaluation in a tissue-equivalent small-intestine environment demonstrates stable impedance matching together with peak realized gains of −<bold>39.5 dBi at 0.915 GHz and −<bold>13.8 dBi at 2.45 GHz. Compliance with electromagnetic exposure requirements is confirmed through specific absorption rate (SAR) analysis. The computed 1 g SAR values are <bold>437 W/kg and <bold>578 W/kg, corresponding to maximum permissible input powers of <bold>3.66 mW and <bold>2.77 mW, respectively, under the Federal Communications Commission (FCC) exposure limits. Owing to its extremely small volume, dual-band capability, and reliable in-body performance, the proposed design constitutes a practical choice for next-generation capsule endoscopy and implantable biomedical telemetry.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4068-4072"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125535","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

Flexible and Optically Transparent Wideband Low-RCS Metasurface Based on Spin-Decoupled and Diffusion Scattering 基于自旋解耦和扩散散射的柔性光透明宽带低rcs超表面

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-26 DOI: 10.1109/LAWP.2026.3727787

Qi Zheng;Yingying Fan;Zhongdian Wu;Xiaotong Li;Peyman PourMohammadi;Yu-Hui Ren;Junsuk Rho;Xue-Xia Yang

{"title":"Flexible and Optically Transparent Wideband Low-RCS Metasurface Based on Spin-Decoupled and Diffusion Scattering","authors":"Qi Zheng;Yingying Fan;Zhongdian Wu;Xiaotong Li;Peyman PourMohammadi;Yu-Hui Ren;Junsuk Rho;Xue-Xia Yang","doi":"10.1109/LAWP.2026.3727787","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3727787","url":null,"abstract":"A wideband low-scattering flexible and optically transparent metasurface (MS) by combining the theory of spin-decoupled and diffusion scatterings is proposed. First, a wideband and high-efficiency MS based on optical transparent indium tin oxide (ITO) is designed by generating multiple electric and magnetic resonances. Second, two MSs consisting of 1-D and 2-D arranged Pancharatnam–Berry (PB) phase elements are studied. The wideband radar cross section (RCS) reduction is obtained by spin-decoupled theory, which can redirect a linearly polarized electromagnetic (EM) wave into two abnormal circularly polarized EM waves. Finally, a MS based on spin-decoupled and diffusion scattering is proposed by arranging the 2-D PB MS in checkerboard pattern. Over 10 dB RCS reduction is obtained from 6.9 GHz to 39.7 GHz with a relative bandwidth of 140.80%. A significant RCS reduction remains for the conformal structures. Experimental results are in good agreement with the simulations. The measured light transmittance is 58.78%, indicating it can be used for transparent and conformal stealth platforms.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4153-4157"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125473","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

Perovskite Solar Cell-Based Integrated Photovoltaic Antennas 基于钙钛矿太阳能电池的集成光伏天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-26 DOI: 10.1109/LAWP.2026.3727911

Yao Li;Xin Yan;Yanbin Luo;Guanghui Xu;Xia Zhang

引用次数: 0

A K-Band Circularly Polarized SIW Phased Array With Wide-Angle Scanning 宽角扫描的k波段圆极化SIW相控阵

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-11 DOI: 10.1109/LAWP.2026.3722659

Ke Hu;Kun-Lai Li;Xuyong Yuan;Yuan Li;Ying Zhan

引用次数: 0