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

Anti-Third-Order-Mode Antenna Excited by Multipoint Feed Method for Compact Size, Gain Enhancement, and Sidelobe Level Suppression 小尺寸、增益增强和旁瓣抑制的多点馈源反三阶模天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-19 DOI: 10.1109/LAWP.2026.3725413

Yangkun Song;Yu Luo;Ningning Yan;Yuefeng Hou;Wenxing An;Kaixue Ma

{"title":"Anti-Third-Order-Mode Antenna Excited by Multipoint Feed Method for Compact Size, Gain Enhancement, and Sidelobe Level Suppression","authors":"Yangkun Song;Yu Luo;Ningning Yan;Yuefeng Hou;Wenxing An;Kaixue Ma","doi":"10.1109/LAWP.2026.3725413","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3725413","url":null,"abstract":"A novel higher-order mode (anti-third-order mode) is proposed in this letter. Furthermore, the anti-third-order-mode is excited by utilizing the multipoint feed method. First, feed at the two current nulls or E-field nulls of the third-order mode of the dipole or slot to make the middle section current or E-field in the same direction as the currents or E-field on both sides, and we describe the higher-order mode in this case as the anti-third-order mode. Furthermore, capacitive coupling elements (CCEs) are introduced to excite the anti-third-order mode of the dipole antenna. For the slot antenna, impedance matching is improved by adjusting the microstrip coupling feed branch. An anti-third-order-mode dipole and slot antenna with compact size, gain enhancement, and sidelobe level (SLL) suppression performance is designed and measured based on this method. The designed dipole achieves a compact size of 1.1λ (λ is the wavelength at the lowest frequency in free space) and a measured gain of 6.29 dBi, with a guaranteed SLL of less than −12.3 dB. The proposed slot antenna achieves a compact size of 0.62λ and a measured gain of 7.04 dBi. Both antennas operate over the UNII-1 (5.15 GHz to 5.25 GHz) band. The proposed anti-third-order mode antenna units are suitable candidates for use in high-gain antenna arrays.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4093-4097"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124547","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

Ambiguity-Free Direction Finding Based on Time-Modulated Array Using Multiharmonic Amplitudes 基于多谐幅时调制阵列的无歧义测向

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-07-24 DOI: 10.1109/LAWP.2026.3716654

Kebin Liu;Chi Zhang;Shiyuan Li;Chong He

{"title":"Ambiguity-Free Direction Finding Based on Time-Modulated Array Using Multiharmonic Amplitudes","authors":"Kebin Liu;Chi Zhang;Shiyuan Li;Chong He","doi":"10.1109/LAWP.2026.3716654","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3716654","url":null,"abstract":"This letter presents a low-complexity, ambiguity-free direction-finding (DF) method for two-element time-modulated arrays (TMAs) using harmonic amplitude information alone. By analytically deriving both sine and cosine components of the spatial phase difference from the fundamental and <inline-formula><tex-math>$pm$</tex-math></inline-formula>1st-order harmonics, the proposed method eliminates DF ambiguity without the necessity of reducing element spacing. This approach enables signal acquisition via a simple scalar frequency sweeper, bypassing spectrum phase measurement. Simulation and experimental results on an S-band TMA prototype demonstrate that the proposed method achieves a root-mean-square error of 1.28<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> within a <inline-formula><tex-math>$pm {text{50}}^{circ }$</tex-math></inline-formula> incident range, closely rivaling the 1.21<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> precision of traditional phase-dependent harmonic analysis methods. The results validate that the proposed amplitude-only strategy offers a robust, low-cost solution for DF applications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"3863-3867"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125435","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

Single-Layer Large Frequency-Ratio Dual-Band Vivaldi-Leaky-Wave Embedded Antenna for Coverage Enhancement 用于增强覆盖的单层大频率比双带vivaldi漏波嵌入式天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-28 DOI: 10.1109/LAWP.2026.3728260

Yuchen Ma;Wei Zheng;Junhong Wang;Yujian Li;Zheng Li;Wonbin Hong

引用次数: 0

A Stretchable Metasurface Absorber With Deformation-Resilient S-Band Absorption Enabled by Symmetry-Restoring Design 对称恢复设计实现变形弹性s波段吸收的可拉伸超表面吸收体

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-20 DOI: 10.1109/LAWP.2026.3725876

Jin Xu;Hao Li;Ruizhe Xing;Jiayi Yang;Bowen Bai

{"title":"A Stretchable Metasurface Absorber With Deformation-Resilient S-Band Absorption Enabled by Symmetry-Restoring Design","authors":"Jin Xu;Hao Li;Ruizhe Xing;Jiayi Yang;Bowen Bai","doi":"10.1109/LAWP.2026.3725876","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3725876","url":null,"abstract":"A stretchable metasurface absorber with deformation-resilient S-band absorption is proposed using a symmetry-restoring liquid-metal resonator design. It comprises six resistor-loaded concentric split elliptical EGaIn resonators, a polydimethylsiloxane (PDMS) spacer and encapsulation layers, and a liquid-metal ground plane. By tailoring the initial axis ratio of the elliptical resonators, the initially anisotropic geometry progressively evolves toward a near-isotropic configuration as the uniaxial tensile strain increases from 0% to 30%. Full-wave simulations and equivalent-circuit analysis indicate that this symmetry-restoring evolution provides passive deformation compensation through the opposing strain dependences of the effective inductance and capacitance, thereby limiting resonance drift and stabilizing the dominant S-band resonance. Measurements demonstrate effective absorption up to 30% strain, with a measured resonance frequency shift of only 5.1%, a retained −10 dB bandwidth of 2.55 GHz at 30% strain, and wide-angle absorption ranging from 0° to 40°. The proposed design offers a promising approach for deformable stealth platforms and wearable electromagnetic devices.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4108-4112"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125448","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-Scan-Loss Dual-Polarized Millimeter-Wave Phased Array With Metallic Pin Array-Generated Beam Shaping 金属引脚阵列产生波束整形的低扫描损耗双极化毫米波相控阵

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-04 DOI: 10.1109/LAWP.2026.3719834

Yanfeng Meng;Lang Gao;Guanghui Xu;Luyu Zhao;Yingsong Li;Lixia Yang;Zhixiang Huang

引用次数: 0

Efficient FDTD Subgridding Algorithm Based on Tree Data Structure and Morton Encoding 基于树形数据结构和Morton编码的高效FDTD子网格算法

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.2026.3722858

Linbo Yan;Xinbo He;Bing Wei;Ning Shen;Ye Wang;Haonan Feng

引用次数: 0

RCS Frequency Extrapolation Based on Improved ESPRIT Algorithm and Joint Correction Estimation of Frequency-Dependent Factors 基于改进ESPRIT算法和频率相关因子联合校正估计的RCS频率外推

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.2026.3722061

Tian-Ci Xiang;Hong-Cheng Yin;Hua Yan

{"title":"RCS Frequency Extrapolation Based on Improved ESPRIT Algorithm and Joint Correction Estimation of Frequency-Dependent Factors","authors":"Tian-Ci Xiang;Hong-Cheng Yin;Hua Yan","doi":"10.1109/LAWP.2026.3722061","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3722061","url":null,"abstract":"Acquiring target electromagnetic scattering data over a wide frequency range may significantly increase the computational or measurement costs. The parametric scattering center model can accurately represent the frequency-dependent relationship of the scattering field, and can be utilized for radar cross-section (RCS) frequency extrapolation, thereby significantly reducing the cost of data acquisition. This letter addresses the insufficient extrapolation performance of the widely used estimation of signal parameters via rotational invariance techniques (ESPRIT)-based parameter estimation algorithm for the geometrical theory of diffraction model. Two major factors affecting its extrapolation accuracy are analyzed, and an improved ESPRIT algorithm is subsequently proposed. This algorithm first corrects the frequency-dependent factors by exploiting the wide-angle correlation of scattering centers. In addition, a ‘‘Zero Processing’’ method is proposed to further iteratively update the position and amplitude parameters of scattering center components corresponding to different frequency-dependent factors. Simulation and measurement results demonstrate that the proposed method achieves a substantial improvement in extrapolation performance, with the extrapolation bandwidth ranging from 5 GHz–10 GHz.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"3973-3977"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124514","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 Design Method for a Dual-Band and Dual-Polarized Patch Antenna Based on a Single-Layer Dielectric Substrate for UAV Communication Applications 基于单层介质基板的无人机通信用双频双极化贴片天线设计方法

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-20 DOI: 10.1109/LAWP.2026.3725799

Shixuan Wang;Yuefeng Hou;Xihui Teng;Zhenshuai Fu;Kaixue Ma

{"title":"A Design Method for a Dual-Band and Dual-Polarized Patch Antenna Based on a Single-Layer Dielectric Substrate for UAV Communication Applications","authors":"Shixuan Wang;Yuefeng Hou;Xihui Teng;Zhenshuai Fu;Kaixue Ma","doi":"10.1109/LAWP.2026.3725799","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3725799","url":null,"abstract":"This letter proposes a design method for a single-layer dual-band dual-polarized patch antenna targeting the 2.4 GHz/5 GHz bands. First, dual-band broadside radiation is realized by exciting two resonant modes within a shared architecture. At the low band, the antenna operates in the first-order mode, with radiation mainly contributed by the outer square-ring patch. At the high band, the third-order mode is effectively excited, and radiation is mainly provided by the inner square patch. Dual polarization is realized through structural symmetry. Second, to accommodate dual-band scenarios with a relatively large frequency ratio, the mode-isolation technique is introduced. By loading choke stubs, the low- and high-band operating modes are effectively separated. Third, to improve impedance matching without increasing feeding complexity, the capacitive-loading technique is adopted. Specifically, appropriate slots are introduced to provide additional capacitance in the high band, thereby achieving good dual-band impedance matching. Finally, a prototype antenna is designed, fabricated, and measured. The measured results show good impedance matching in both bands with a frequency ratio of 2.35; the isolation between the two orthogonal polarization ports is better than 20.0 dB in the low band and 14.5 dB in the high band. In addition, a 1 × 4 antenna array is designed and measured, achieving interelement isolation better than 17.0 dB in the low band and 30.0 dB in the high band, further confirming the good scalability of the proposed design for array applications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4098-4102"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124507","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

Design of Irregular Cavity Slot Subarray Antenna With Arbitrary Linear Polarization 任意线极化的不规则空腔缝隙子阵列天线设计

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-04 DOI: 10.1109/LAWP.2026.3719843

Changpu Shao;Dong Xiang;Xianling Liang;Wei Wang;Steven Gao

引用次数: 0

A Low-Profile and Broadband Circularly Polarized Folded Transmitarray Antenna Using Metasurfaces 基于超表面的低轮廓宽带圆极化折叠发射阵列天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-07-23 DOI: 10.1109/LAWP.2026.3716693

Yan Liu;Lei Quan;Fangfang Duan;Bingqi Li;Kai Xie

{"title":"A Low-Profile and Broadband Circularly Polarized Folded Transmitarray Antenna Using Metasurfaces","authors":"Yan Liu;Lei Quan;Fangfang Duan;Bingqi Li;Kai Xie","doi":"10.1109/LAWP.2026.3716693","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3716693","url":null,"abstract":"This letter presents a low-profile and broadband folded transmitarray antenna for linear-to-circular polarization conversion using metasurfaces (MSs). The antenna consists of a top and a bottom MSs, along with an open waveguide feed located within the top MS. The top MS is designed to reflect linearly polarized waves and convert them into circularly polarized waves for full transmission, whereas the bottom MS enables a 90<inline-formula><tex-math>$^circ$</tex-math></inline-formula> polarization rotation of incident linear polarization waves. Operating at a central frequency of 10.5 GHz, the electromagnetic waves emitted by the feed undergo three reflections between the top and bottom MSs, effectively reducing the antenna profile height to one-fourth that of traditional focusing transmitarray antennas. Excellent agreement is observed between the simulation and measurement results, demonstrating a 3 dB axial ratio bandwidth of 27%, a 3 dBi gain bandwidth of 28.7%, and a peak gain of 20.6 dBi at 10.5 GHz. The proposed folded array antenna shows substantial potential for applications in circularly polarized satellite communications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"3868-3872"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124599","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