IEEE Transactions on Antennas and Propagation最新文献_第2页

Compensation of Bending Due to Gravity for MetOp-SG Scatterometer Antenna On-Ground Calibration at the DTU-ESA Antenna Test Facility DTU-ESA天线试验台MetOp-SG散射计天线地面标定重力弯曲补偿

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-14 DOI: 10.1109/TAP.2026.3691644

Javier Fernández Álvarez;Jeppe Majlund Bjørstorp;Samel Arslanagić;Michael Mattes

{"title":"Compensation of Bending Due to Gravity for MetOp-SG Scatterometer Antenna On-Ground Calibration at the DTU-ESA Antenna Test Facility","authors":"Javier Fernández Álvarez;Jeppe Majlund Bjørstorp;Samel Arslanagić;Michael Mattes","doi":"10.1109/TAP.2026.3691644","DOIUrl":"https://doi.org/10.1109/TAP.2026.3691644","url":null,"abstract":"The on-ground calibration of the MetOp-SG scatterometer antenna subsystem (SAS) requires spherical near-field measurements of large and heavy antennas mounted on a roll-over-azimuth positioner. Due to the significant mass of the antenna under test (AUT), the supporting structure experiences gravity-induced deformation; this results in the near-field signal of the AUT to be measured in points that are nonuniformly distributed on the measurement sphere. This article proposes a compensation technique based on a nonuniform 2-D fast Fourier transform to compute the spectral representation of the irregularly sampled near-field signal. The near-field values at the nominal sampling locations are subsequently reconstructed from this spectrum by interpolation, enabling recovery of the field corresponding to the ideal measurement geometry. The method was validated using measured and simulated data from an antenna with characteristics comparable to those of the MetOp-SG instruments, demonstrating negligible reconstruction error, and robustness with respect to uncertainty of the bending angle. Then, the technique was successfully applied to real data from the MetOp-SG SAS FM2 near-field measurement campaign conducted at the Technical University of Denmark in 2022, confirming its effectiveness in practical measurement scenarios. Additionally, it is proposed that the method can be adapted to compensate for a variety of systematic measurement setup errors; this is demonstrated by applying the method to real measured data of a standard gain horn affected by an axis-intersection error.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7561-7574"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IEEE Transactions on Antennas and Propagation Information for Authors IEEE天线与传播信息学报

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-08-05 DOI: 10.1109/TAP.2026.3716108

引用次数: 0

A Compact Polarization and Pattern Diversity Antenna With Enhanced Azimuthal Gain for Vehicular Communications 一种用于车载通信的增强方位增益的紧凑型极化和方向分集天线

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-11 DOI: 10.1109/TAP.2026.3690119

Xiaohan Zhai;Jiaxin Kuang;Lei Zhu

{"title":"A Compact Polarization and Pattern Diversity Antenna With Enhanced Azimuthal Gain for Vehicular Communications","authors":"Xiaohan Zhai;Jiaxin Kuang;Lei Zhu","doi":"10.1109/TAP.2026.3690119","DOIUrl":"https://doi.org/10.1109/TAP.2026.3690119","url":null,"abstract":"A compact tri-polarized antenna providing both polarization and pattern diversity is proposed in this article. The antenna integrates a vertically polarized omnidirectional radiator with enhanced azimuthal gain for vehicle-to-vehicle (V2V) communication and a pair of orthogonal dipoles with ±45° polarizations for vehicle-to-base (V2B) station communication. Unlike conventional omnidirectional antennas that rely on collinear arrays to improve gain, the proposed omnidirectional element employs a cylindrical cavity surrounded by eight parasitic open cavities acting as magnetic dipoles. By carefully optimizing the coupling between the cylindrical cavity and the parasitic elements, a field-interference-based beam-shaping mechanism is realized, resulting in elevation beamwidth compression and azimuthal gain enhancement without increasing antenna height. The proposed omnidirectional radiator achieves an impedance bandwidth of 5.8–6.2 GHz and an azimuth plane gain enhancement of 2.5 dB. Subsequently, a compact dual-band dual-polarized dipole antenna covering 1.7–1.9 GHz and 3.2–4.1 GHz is integrated atop the omnidirectional radiator to support vehicular LTE and sub-6 GHz 5G-NR communication. The overall antenna size is only <inline-formula> <tex-math>$0.37lambda _{mathrm {L}} times 0.37lambda _{mathrm {L}} times 0.11lambda _{mathrm {L}}$ </tex-math></inline-formula> (<inline-formula> <tex-math>$lambda _{mathrm {L}}$ </tex-math></inline-formula> is the wavelength at the lowest operating frequency), and the port-to-port isolation exceeds 28 dB. Simulated and measured results are in good agreement. The feasibility on metallic platforms is demonstrated, confirming the proposed design a promising solution for compact vehicular communications.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7526-7537"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Near-Field Wideband Frequency-Invariant FIR Filter Beamforming With Shallow Residual Convolutional Neural Network 基于浅残差卷积神经网络的近场宽带频率不变FIR滤波器波束形成

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-18 DOI: 10.1109/TAP.2026.3692677

Wen Tao Li;Meng Fei Zhang;Xiao Yan Ju;Yong Qiang Hei;Xiao Wei Shi

{"title":"Near-Field Wideband Frequency-Invariant FIR Filter Beamforming With Shallow Residual Convolutional Neural Network","authors":"Wen Tao Li;Meng Fei Zhang;Xiao Yan Ju;Yong Qiang Hei;Xiao Wei Shi","doi":"10.1109/TAP.2026.3692677","DOIUrl":"https://doi.org/10.1109/TAP.2026.3692677","url":null,"abstract":"The near-field antenna array synthesis problem has been known as a challenging issue because of variant wavefront curvature, which therefore attracts considerable interest to explore efficient synthesis techniques. In this article, near-field wideband frequency-invariant (FI) beampattern synthesis is investigated, for which an efficient shallow residual convolutional neural network (CNN) approach is proposed. By formulating the beamforming task as a filter coefficient optimization problem, a set of initialized finite-impulse-response (FIR) filter coefficients is obtained to establish feasible starting solutions, which are then taken as unlabeled inputs to the network. The CNN architecture is adopted for its powerful capability in learning complex nonlinear mappings and processing high-dimensional structured data, which is effective in addressing the coupling between frequency, angle, and range in near-field scenarios, while residual connections are incorporated in shallow layers to alleviate gradient vanishing and preserve computational efficiency. The network takes complex-valued filter coefficients as dual-channel inputs, and then optimizes them via a specialized composite loss function that simultaneously enforces frequency-invariance in both angle and distance dimensions, ensures precise near-field focusing, and suppresses sidelobe levels to achieve comprehensive performance optimization. Simulation results of desired near-field wideband patterns for numerical geometric array configurations are provided to verify the effectiveness and generality of the proposed approach.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7497-7510"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Guest Editorial Special Issue on Advanced Computational Methods and Multiphysics Simulation for Complex Electromagnetic Media 复杂电磁介质的先进计算方法与多物理场模拟特刊

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-08-06 DOI: 10.1109/TAP.2026.3714014

Kai Li;Vladimir Okhmatovski;Atef Z. Elsherbeni;Yuanguo Zhou

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IEEE Transactions on Antennas and Propagation Publication Information IEEE天线与传播学报出版信息

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-08-05 DOI: 10.1109/TAP.2026.3716104

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A Gain-Improvement Method Using Mixed Metasurface Superstrate With Channel Capacity Enhancement 信道容量增强的混合超表面层增益改进方法

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-21 DOI: 10.1109/TAP.2026.3693802

Jiayue Jiang;Luyu Zhao;Weijian Wang;Jiafeng Ge;Wei Lin;Mengguan Pan;Feng Liu;Jiayin Guo;Zhixiang Huang;J. C. Vardaxoglou

{"title":"A Gain-Improvement Method Using Mixed Metasurface Superstrate With Channel Capacity Enhancement","authors":"Jiayue Jiang;Luyu Zhao;Weijian Wang;Jiafeng Ge;Wei Lin;Mengguan Pan;Feng Liu;Jiayin Guo;Zhixiang Huang;J. C. Vardaxoglou","doi":"10.1109/TAP.2026.3693802","DOIUrl":"https://doi.org/10.1109/TAP.2026.3693802","url":null,"abstract":"A gain-improvement (GI) method using a mixed metasurface superstrate for the compact ±45° orthogonal dual-polarized base station antenna array is proposed in this article. The method consists of two metasurface-superstrates, the high permittivity ceramic lens (HPCLs) and the high refractive-index surface (HRIS) for ±45<sup>∘</sup> polarizations. The HPCL adjusts the phase distribution of radiated waves of every antenna in the array to form a quasi-plane wavefront, and the HRIS refracts the waves to further form a nearly planar wavefront to achieve GI. Moreover, the GI method does not affect the impedance match of the antenna array, and the realized gain of the array improves. Two GI examples, including the GI of a <inline-formula> <tex-math>$1times 3$ </tex-math></inline-formula> subarray and the GI of a <inline-formula> <tex-math>$4times 3$ </tex-math></inline-formula> array, are presented. The measured peak realized gain of the <inline-formula> <tex-math>$4times 3$ </tex-math></inline-formula> array is enhanced by up to 2 dBi, and the array achieves a measured realized aperture efficiency (RAE) up to 90% within a 1.71–2.17 GHz band. The GI method brings the increase up to 22% of the channel capacity of a <inline-formula> <tex-math>$4times 4$ </tex-math></inline-formula> MIMO system. The above improvement allows a <inline-formula> <tex-math>$4times 3$ </tex-math></inline-formula> array to be used, instead of a <inline-formula> <tex-math>$4times 4$ </tex-math></inline-formula>, which results in a 25% aperture reduction. The attractive features of this method make it a key candidate technology for future mobile communications for a massive MIMO application.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7720-7735"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Design of Ultrabroadband Metamaterial Absorber With Ultrawide-Angle and Polarization Stability 具有超广角和偏振稳定性的超宽带超材料吸收体设计

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-06 DOI: 10.1109/TAP.2026.3688981

Xianglin Kong;Lei Zhao;Yun Zhou;Zhongxiang Shen

{"title":"Design of Ultrabroadband Metamaterial Absorber With Ultrawide-Angle and Polarization Stability","authors":"Xianglin Kong;Lei Zhao;Yun Zhou;Zhongxiang Shen","doi":"10.1109/TAP.2026.3688981","DOIUrl":"https://doi.org/10.1109/TAP.2026.3688981","url":null,"abstract":"We investigate the underlying mechanisms of impedance mismatch under oblique incidence and propose a scan compensation method to design an ultra broadband absorber with ultrawide-angle and polarization stability. For realization, a dual-section dielectric layer is introduced to improve the input impedance, while magnetic material (MM) is primarily employed to mitigate frequency shift under oblique incidence, achieving much superior absorption performance of transverse electric (TE) and transverse magnetic (TM) waves at large incident angles. Integrating resistive surfaces, dielectric layers, and a grounded magnetic layer, an ultra broadband and ultrawide-angle microwave absorber is designed. Cube honeycomb structures are used to replace unavailable low-permittivity dielectrics to enable experimental validation. A prototype is fabricated, assembled and tested, and the measured results show that it achieves at least 90% absorption in 2.0–14.8 GHz under the normal incidence, with a fractional bandwidth (FBW) of 152.38%. When the incident angle reaches 60°, the absorber maintains absorptivity at least 90% for both TE and TM waves. Measured results indicate that the designed absorber achieves ultra broadband absorption performance with ultrawide-angle and polarization stability.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7957-7966"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Unified Frequency–Polarization Diversity for Simultaneous Wireless Information and Power Transfer (SWIPT) 同时无线信息和电力传输的统一频率极化分集（SWIPT）

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-20 DOI: 10.1109/TAP.2026.3693359

Mingyang Chang;Fan Yang;Maoguo Gong

{"title":"Unified Frequency–Polarization Diversity for Simultaneous Wireless Information and Power Transfer (SWIPT)","authors":"Mingyang Chang;Fan Yang;Maoguo Gong","doi":"10.1109/TAP.2026.3693359","DOIUrl":"https://doi.org/10.1109/TAP.2026.3693359","url":null,"abstract":"This article proposes a novel system architecture that integrates frequency diversity and polarization diversity to enable simultaneous wireless information and power transfer (SWIPT). At the transmitter, a dual-band, dual-polarized shared-aperture reflective metasurface array is designed, which implements dual-band operation through two distinct cross-shaped unit structures. Furthermore, the horizontal and vertical dipoles of each cross-shaped element can independently control the horizontal and vertical polarization components of the incident electromagnetic waves, thereby achieving dual-polarized manipulation. By exploiting both the polarization and frequency dimensions, the proposed system supports six distinct operation modes for concurrent wireless power and information transmission. Simulation and experimental results demonstrate that the reflective metasurface achieves gains of 21.9 dBi at 5.8 GHz and 28.3 dBi at 10 GHz while enabling independent control over horizontal and vertical polarizations across both frequency bands. At the receiver, a dual-polarized rectenna at 5.8 GHz and a rectenna at 10 GHz are designed. Experimental validation of SWIPT is conducted based on the proposed polarization diversity and frequency diversity system architecture. The experimental results show that, in the power transfer link, an LED lamp with a rated power of 20 mW can be lit up. In the data transfer link, the school emblem of Xidian University can be clearly transmitted from the transmitter to the receiver. This system can be applied to SWIPT scenarios in more complex electronic environments.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7761-7769"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Physics-Guided Surface Current Reconstruction of 3-D PEC Targets From a Single Image via Cascaded Neural Networks 利用级联神经网络从单幅图像重建三维PEC目标的物理引导表面电流

IF 5.9 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-27 DOI: 10.1109/TAP.2026.3695278

Xiangwei Liu;Te Shi;Kuisong Zheng;Haixuan Zhang;Chaoqun Fan;Jianzhou Li;Gao Wei;Changying Wu

{"title":"Physics-Guided Surface Current Reconstruction of 3-D PEC Targets From a Single Image via Cascaded Neural Networks","authors":"Xiangwei Liu;Te Shi;Kuisong Zheng;Haixuan Zhang;Chaoqun Fan;Jianzhou Li;Gao Wei;Changying Wu","doi":"10.1109/TAP.2026.3695278","DOIUrl":"https://doi.org/10.1109/TAP.2026.3695278","url":null,"abstract":"Accurate reconstruction of electromagnetic (EM) surface currents is essential for radar signature prediction, scattering-mechanism interpretation, and EM scene understanding. However, traditional computational EM (CEM) methods require complete geometric models and fine surface meshing, resulting in high computational costs and limiting applicability in vision-based scenarios where only single-view images are available. This article proposes a physics-guided cascaded neural network to infer the surface-current distribution of a target directly from a single optical image. The framework consists of three subnetworks for surface-normal estimation, depth reconstruction, and current refinement, together with an intermediate physics-guided module for coarse current initialization based on physical optics (POs). By progressively embedding geometric cues and EM priors, the proposed method effectively alleviates the ill-posed geometry-to-current mapping and enforces physical consistency. Extensive numerical experiments demonstrate that the proposed model accurately reconstructs high-fidelity surface currents and radar cross sections (RCSs) at 1 GHz, achieving agreement comparable to the method of moments (MoM) results while requiring only a single image as input. Experimental validations using 3-D-printed objects further confirm the robustness of the framework under real-world measurement uncertainties, including illumination variations and sensor noise. The results show that the proposed method eliminates the need for full geometric modeling and offers strong potential for real-time radar signature prediction, EM simulation acceleration, and autonomous perception.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 8","pages":"7819-7834"},"PeriodicalIF":5.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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