IEEE Antennas and Wireless Propagation Letters最新文献_第5页

A Dual-Mode 2-D Frequency-Scanning Microstrip Periodic Leaky-Wave Antenna Array 一种双模二维扫频微带周期性漏波天线阵列

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-24 DOI: 10.1109/LAWP.2025.3582781

Xiangqi Nie;Yuanxin Li;Zhixi Liang;Shao Yong Zheng;Yunliang Long

{"title":"A Dual-Mode 2-D Frequency-Scanning Microstrip Periodic Leaky-Wave Antenna Array","authors":"Xiangqi Nie;Yuanxin Li;Zhixi Liang;Shao Yong Zheng;Yunliang Long","doi":"10.1109/LAWP.2025.3582781","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3582781","url":null,"abstract":"A dual-mode two-dimensional (2-D) frequency-scanning microstrip periodic leaky-wave antenna array is presented. The antenna array consists of four rampart lines with 1-D frequency-scanning capability and a matching feeding structure. The antenna array has dual-mode 2-D frequency-scanning capability. In the low-frequency range, the antenna array is in a four-beam scanning mode, and as the frequency increases, the four beams gradually move toward the broadside direction. In the high-frequency range, the antenna array is in a bowl-shaped radiation mode, and as the frequency increases, the bowl-shaped radiation gradually moves away from the broadside direction. A prototype of antenna array is fabricated and tested. The measurement results verify that the antenna array achieves dual-mode 2-D frequency scanning. In the low-frequency range, the four beam radiation scans from 8° to 49° in the <inline-formula><tex-math>$varphi $</tex-math></inline-formula> = 45° plane. The bowl-shaped radiation in the high-frequency range scans from 17° to 38° in the <inline-formula><tex-math>$varphi $</tex-math></inline-formula> = 0°(<italic>x-z)-plane.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3084-3088"},"PeriodicalIF":4.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998248","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

Compact Wideband Wide-Angle Scanning Millimeter-Wave Planar Antenna Array With WAIM 小型宽频带广角扫描毫米波平面天线阵

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-24 DOI: 10.1109/LAWP.2025.3583007

Yu-Qi Ma;Zhi-Hong Tu;Fu-Chang Chen

引用次数: 0

An Ultrahigh Numerical Aperture Microwave Metalens With Ultrathin Thickness 一种超薄厚度的超高数值孔径微波超透镜

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-23 DOI: 10.1109/LAWP.2025.3582161

Yong-Qiang Liu;Wei Dai;Jinhai Sun;Yue-Yi Zhang;Chao-Hai Du

{"title":"An Ultrahigh Numerical Aperture Microwave Metalens With Ultrathin Thickness","authors":"Yong-Qiang Liu;Wei Dai;Jinhai Sun;Yue-Yi Zhang;Chao-Hai Du","doi":"10.1109/LAWP.2025.3582161","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3582161","url":null,"abstract":"Ultrahigh numerical aperture (NA) metalenses can produce a tight focusing spot with highest resolution very close to diffraction limit. So far, several ultrahigh metalenses have been presented, but mostly with dielectric metasurfaces for experimentally reported NA < 1 and with bulky device thickness compared to its wavelength <italic>λ. In this letter, an ultrahigh NA metalens (spot size is as small as 0.5<italic>λ, NA = 1) by using multilayer plasmonic metasurface with only 0.24<italic>λ thickness is demonstrated both numerically and experimentally. Notably, this measured NA = 1 is the highest level among all of the reported ultrahigh NA metalenses in the free space. Besides, the measured focusing efficiency can reach a large 31%, which can also be compared to the state-of-the-art ultrahigh NA metalenses. Such an ultrahigh resolution focusing in axial also produces a tight longitudinal depth of focus (DOF) of 2.3<italic>λ and 3<italic>λ according to simulations and measurements, respectively. The presented metalens can find potential applications such as ultrahigh resolution microwave imaging, compact wireless power harvesting or transfer systems, miniaturized communication or sensing systems, and many others.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3064-3068"},"PeriodicalIF":4.8,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998222","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

Radiation Characteristics of a Slot Antenna With Two Parasitically Excited Wires 双寄生激励导线槽天线的辐射特性

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-23 DOI: 10.1109/LAWP.2025.3582422

Junming Ding;Min Tang;Binshan Zhao;Yueping Zhang

{"title":"Radiation Characteristics of a Slot Antenna With Two Parasitically Excited Wires","authors":"Junming Ding;Min Tang;Binshan Zhao;Yueping Zhang","doi":"10.1109/LAWP.2025.3582422","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3582422","url":null,"abstract":"The formulation and validation of the radiation characteristics of a slot antenna with two parasitically excited wires (SCPW) is presented in this letter. First, the coupled currents at the driving point of wires are derived. Then, the far-fields of a slot antenna and two wires excited with same amplitude but out of phase are derived under the commonly assumed electrically thin condition for the slot and wires, respectively. The antenna’s overall radiation field is then obtained by combining these components and the directivity is deduced. Next, the amplitude and the phase of the far-field of the wires are calculated and analyzed to obtain a cancelation to the far-field of the slot antenna. Finally, the slot antenna coupled with two parasitically excited monopoles (SCPM) achieves uniform radiation patterns in both <italic>E- and <italic>H-planes. A slot antenna coupled with two parasitically excited inverted-Ls (SCPI) broadens the radiation pattern in both principal planes, resulting in a half-power beamwidth of 90° in the <italic>H-plane and 88° in the <italic>E-plane. Furthermore, the interelement mutual coupling in the <italic>E-plane achieved around 6 dB reduction for SCPW elements compared to using a slot alone. For verification, the prototypes of SCPM, SCPI, and their 1 × 2 arrays were simulated, fabricated, and measured. Acceptable agreements among the calculated, simulated and measured results are achieved.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3079-3083"},"PeriodicalIF":4.8,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998313","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

A Dual-Band Dual-Circularly Polarized Folded Transmitarray Antenna With Compact Aperture 小口径双频双圆极化折叠发射阵列天线

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-23 DOI: 10.1109/LAWP.2025.3581942

Jin Wang;Jinbo Liu;Qingxin Guo;Hui Zhang;Zengrui Li;Jiming Song

引用次数: 0

Si-Cylinder Arrays on InAs for Electromagnetic Nonreciprocal Radiation With 0.5 T Magnetic Field and 3° Angle 磁场为0.5 T、角度为3°的电磁非互反辐射中硅柱阵列在InAs上的应用

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-23 DOI: 10.1109/LAWP.2025.3582272

Junhui Huang;Bo Wang

{"title":"Si-Cylinder Arrays on InAs for Electromagnetic Nonreciprocal Radiation With 0.5 T Magnetic Field and 3° Angle","authors":"Junhui Huang;Bo Wang","doi":"10.1109/LAWP.2025.3582272","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3582272","url":null,"abstract":"In recent years, nonreciprocity of nonequilibrium radiation has demonstrated significant possibility for practical value, where the nonreciprocal radiation has successfully mitigated the limitations imposed by Kirchhoff’s law. In this study, we investigate the pronounced nonreciprocal radiation characteristics of a dual-polarized silicon cylindrical array under low magnetic field and small angle. The array structure consists of multiple layers: a silicon cylindrical layer, a silicon rectangular layer, an InAs layer, and an Ag rectangular layer. This unique configuration enables the exploration of novel radiation phenomena in the weak external magnetic field and less angle. By investigating the physical mechanisms governing electromagnetic field energy distribution, we have achieved a nonreciprocity exceeding 90% between TE polarization and TM polarization in radiation. This remarkable result is obtained at low magnetic fields, specifically at an intensity of 0.5 T and an angle of 3°. In contrast to conventional nonreciprocal radiation structures, this study significantly diminishes reliance on external magnetic fields and incidence angles. It is anticipated that it will offer fresh perspectives and innovative approaches in the field of nonreciprocal radiation and energy transfer research.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3069-3073"},"PeriodicalIF":4.8,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998164","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

A Broadband Rectifying Metasurface Antenna Based on Frequency Diversity for Simultaneous Wireless Information and Power Transfer 一种基于频分集的宽带整流超表面天线，用于同时传输无线信息和能量

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-19 DOI: 10.1109/LAWP.2025.3581212

Xiaofeng Sun;Qiqi Xie;Yingzhi Tian;Yunhao Li;Xiangyong Mou;Guohong Du;Yi Xie

{"title":"A Broadband Rectifying Metasurface Antenna Based on Frequency Diversity for Simultaneous Wireless Information and Power Transfer","authors":"Xiaofeng Sun;Qiqi Xie;Yingzhi Tian;Yunhao Li;Xiangyong Mou;Guohong Du;Yi Xie","doi":"10.1109/LAWP.2025.3581212","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3581212","url":null,"abstract":"In this letter, a broadband rectifying metasurface (RMS) antenna for simultaneous wireless information and power transfer (SWIPT) is proposed. By integrating an RMS with a slot-coupled antenna, the proposed design enables the concurrent collection of energy and information in different frequency bands, simplifying the SWIPT receiving system. First, an RMS is developed to harvest broadband electromagnetic energy across 4.4 GHz to 6.4 GHz. The top patch of the RMS unit is designed as an asymmetric orthogonal dipole, which expands the impedance bandwidth by optimizing the length ratio of its long and short arms. Rectifier diodes and inductors are directly integrated into the RMS unit to realize rectification and form direct current transmission path. Then, a 5 × 5 patch on the top of the RMS is regarded as a radiating patch, and a rectangular slot is etched in the center of the ground plane of the RMS, to form a slot-coupled antenna for information collection in the 2.4 GHz to 2.5 GHz. Measurement results indicate the energy harvesting efficiency exceeding 60% in the 4.4 GHz to 6.4 GHz, along with the gain of over 4 dBi in the 2.4 GHz to 2.5 GHz, confirming its effectiveness in both energy and information collection.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3054-3058"},"PeriodicalIF":4.8,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998371","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

Agile Bessel Beam Leaky-Wave Launcher With Suppressed Open Stopband and Multiport Feeding 具有抑制开阻带和多端口馈电的敏捷贝塞尔波束漏波发射器

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-19 DOI: 10.1109/LAWP.2025.3581066

Sadia Riaz;Davide Comite;Paolo Baccarelli;Symon K. Podilchak

{"title":"Agile Bessel Beam Leaky-Wave Launcher With Suppressed Open Stopband and Multiport Feeding","authors":"Sadia Riaz;Davide Comite;Paolo Baccarelli;Symon K. Podilchak","doi":"10.1109/LAWP.2025.3581066","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3581066","url":null,"abstract":"This work investigates the generation of Bessel beams from a double-strip bull-eye planar leaky-wave launcher. The structure offers wideband operation and an extended non-diffracting range, thanks to the suppression of the open stopband, which typically affects periodic leaky-wave antennas. A comparative analysis is reported with a single-strip implementation, which shows the stopband and therefore offers a reduced non-diffracting range. To enhance functionality with respect to conventional bull-eye structures operating in the near-field, the double-strip launcher is excited through a flexible substrate integrated waveguide multiport feeder, which enables dual-polarization and controllable aperture fields and allows for the generation of both zeroth- and first-order Bessel beams. Both simulations and measurements are reported, demonstrating beam focusing over larger distances in the near-field. Also, for the first time, an adaptable and polarization agile launcher is studied and experimentally validated to increase the non-diffractive range of a planar and compact structure.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3044-3048"},"PeriodicalIF":4.8,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998277","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

A Directionally Grouping Multilevel Green’s Function Interpolation Method With a Novel Low-Rank Compression Scheme 一种新的低秩压缩方案的定向分组多阶格林函数插值方法

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-19 DOI: 10.1109/LAWP.2025.3581187

Shidong Jiang;Haogang Wang

{"title":"A Directionally Grouping Multilevel Green’s Function Interpolation Method With a Novel Low-Rank Compression Scheme","authors":"Shidong Jiang;Haogang Wang","doi":"10.1109/LAWP.2025.3581187","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3581187","url":null,"abstract":"In this letter, we propose a novel low-rank compression scheme for implementing the Directionally Grouping Multilevel Green’s Function Interpolation Method (DGMLGFIM), a fast electromagnetic scattering solver. In this scheme, a directional grouping is performed to construct the tree structure of the DGMLGFIM so that the rank of Green’s function (GF) matrix of a direction <inline-formula> <tex-math>${d}$</tex-math></inline-formula> is constant. Subsequently, at each level of the tree, a low-cost procedure is devised to obtain a common unitary matrix Q, which is shared by groups in one directional interaction list. The common Q enables the constructions of interpolation coefficient matrix G and interpolation basis matrices W, C with their dimensions being compressed from the number of interpolation points (NIP) to the rank of GF matrix. Consequently, in the DGMLGFIM, the computational cost of the upper pass, translation and down pass operations is related to the constant rank instead of the NIP. As a result, the time and memory complexities of DGMLGFIM scale as <inline-formula> <tex-math>${O}( {{N log N}} )$</tex-math></inline-formula> and <inline-formula> <tex-math>${O}( {N} )$</tex-math></inline-formula>, respectively, in solving electrically large problems where <inline-formula> <tex-math>${N}$</tex-math></inline-formula> is the number of unknowns. Numerical results of the scatterings from a sphere of diameter 128-wavelength and a squared patch array of size 50-wavelength by 50-wavelength are presented to demonstrate its efficiency and accuracy.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3049-3053"},"PeriodicalIF":4.8,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998152","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

Characterizing Low-Frequency Scattering by Discontinuous Galerkin Integral Equation Method in the Time Domain 时域不连续伽辽金积分方程法表征低频散射

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-17 DOI: 10.1109/LAWP.2025.3580364

Rongchuan Bai;Ming- Da Zhu;Li Huang;Haoxuan Zhang;Zhe Chen;Xiude Tu;Ruisang Liu;Xiaomeng Ren;Hao Xie;Wen-Yan Yin

引用次数: 0