IEEE Transactions on Antennas and Propagation最新文献_第9页

Design of an Active Cloak for Canceling Scattering From an Object in Uniform Translation 设计用于消除物体均匀平移散射的主动式斗篷

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-01 DOI: 10.1109/TAP.2024.3467671

Hongyun Deng;George V. Eleftheriades

引用次数: 0

A Physics-Based Deep Learning to Extend Born Approximation Validity to Strong Scatterers

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-01 DOI: 10.1109/TAP.2024.3467700

Leila Ahmadi;Amir Ahmad Shishegar

{"title":"A Physics-Based Deep Learning to Extend Born Approximation Validity to Strong Scatterers","authors":"Leila Ahmadi;Amir Ahmad Shishegar","doi":"10.1109/TAP.2024.3467700","DOIUrl":"https://doi.org/10.1109/TAP.2024.3467700","url":null,"abstract":"In this study, we present a novel approach to address nonweak scattering problems by integrating deep learning (DL) into the Born series. Typically, the first-order Born approximation (BA) is limited to cases where the contrast between the scatterer and the background medium is exceptionally low. While higher-order terms in the Born series can be used for higher contrasts, convergence issues may arise due to highly oscillatory factors in Green’s function. To overcome this limitation, we introduce a physics-based DL method inspired by the Born series, which effectively predicts the distribution of the complex electromagnetic field. The proposed series assures convergence when scattering occurs from high-contrast objects, due to the use of a learning-based forward operator. Exploiting the physics-based nature of our model, we adopt a simple convolutional neural network (CNN) architecture, requiring significantly fewer training data. Our results demonstrate very good generalization capabilities of the proposed approach, showcasing its ability to handle unseen background fields and profiles. We deem this innovative series as an extension of the Born series that can be effectively employed in highly nonlinear problems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9392-9400"},"PeriodicalIF":4.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858562","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

Compact and High-Efficient Air-Filled Substrate Integrated Waveguide Broadband Endfire Leaky Wave Antenna

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-30 DOI: 10.1109/TAP.2024.3466392

Junjiang Chen;Jinlong Su;Fei Hu

{"title":"Compact and High-Efficient Air-Filled Substrate Integrated Waveguide Broadband Endfire Leaky Wave Antenna","authors":"Junjiang Chen;Jinlong Su;Fei Hu","doi":"10.1109/TAP.2024.3466392","DOIUrl":"https://doi.org/10.1109/TAP.2024.3466392","url":null,"abstract":"The air-filled substrate integrated waveguide (AFSIW) millimeter wave (MMW) broadband endfire leaky wave antenna (LWA) with compact and high efficiency is proposed in this communication. The antenna mainly includes a three-layer substrate. The first and third layers are the radiation main body, and the second layer is an AFSIW transmission line (TL). First, the AFSIW with air reduces the dielectric losses, thus improving the radiation efficiency of the antenna. Second, the AFSIW has weak dispersion characteristics, benefiting the wide operating bandwidth of the antenna. Additionally, a double-sided diamond-shaped slot exhibits a flatter phase constant in the slow wave region, further enhancing the antenna’s operating bandwidth. The electromagnetic energy of the AFSIW endfire LWA 1 is concentrated on the metal layer surface through a single diamond-shaped slot array, achieving endfire radiation along the waveguide structure. By utilizing the confinement of the dielectric layer on the field, the gain of the antenna is further improved. Finally, the AFSIW endfire LWA 2 utilizes multiple diamond-shaped slots as the unit cell, increasing the unit cell’s attenuation constant and further enhancing the radiation efficiency of the antenna. The prototypes of LWA are fabricated and tested. The measurement results show that the impedance bandwidth of LWA 2 is 29–42 GHz. The maximum radiation efficiency of LWA 2 is 90.3%.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9504-9509"},"PeriodicalIF":4.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859000","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

Dual-Polarized Microstrip Antenna With Single-Dimension-Constraint Resonant Frequency 具有单维度约束谐振频率的双极化微带天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-30 DOI: 10.1109/TAP.2024.3466399

Yongjian Zhang;Peihang Li;Xu Qin;Peiyu Liang;Kunpeng Wei;Yue Li

{"title":"Dual-Polarized Microstrip Antenna With Single-Dimension-Constraint Resonant Frequency","authors":"Yongjian Zhang;Peihang Li;Xu Qin;Peiyu Liang;Kunpeng Wei;Yue Li","doi":"10.1109/TAP.2024.3466399","DOIUrl":"https://doi.org/10.1109/TAP.2024.3466399","url":null,"abstract":"This article proposes an asymmetric dual-polarized microstrip antenna (DPMA) with single-dimension-constraint resonant frequencies for orthogonal polarizations. Different from regular DPMAs, the orthogonal modes of the proposed antenna are only determined by a single dimension, breaking the symmetry limitations of dual-polarized (DP) antennas and leading to the irrelevant dimension for optimized radiation properties of gain and beamwidth. The proposed antenna consists of a vertical-slot-etched rectangular patch with two groups of shorting vias and a horizontal slot on the ground. By feeding two ports with differential or common modes, the antiphase TM10 or antiphase epsilon-near-zero (ENZ) modes are excited for orthogonal polarizations in extremely asymmetric structures. As an application example for mobile terminals, a circular-polarized (CP) antenna with a 90°-phase-step two-way power divider is constructed and integrated onto the upper metal bezel with a high aspect ratio for satellite communications. The measured results show an overlapped bandwidth of 40 MHz and beamwidth beyond 80° in a volume of \u0000<inline-formula> <tex-math>$0.39times 0.026times 0.0065~lambda _{0}^{3}$ </tex-math></inline-formula>\u0000, exhibiting the unique design approach for DP or CP antennas in extremely asymmetric platforms.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8365-8374"},"PeriodicalIF":4.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540491","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

Investigating the Impact of Antenna Dispersion on Time Reversal Wideband THz Imaging Systems 研究天线色散对时间反转宽带太赫兹成像系统的影响

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-30 DOI: 10.1109/TAP.2024.3466473

Alireza Madannejad;Mohammad Mehrabi Gohari;Umer Shah;Joachim Oberhammer

{"title":"Investigating the Impact of Antenna Dispersion on Time Reversal Wideband THz Imaging Systems","authors":"Alireza Madannejad;Mohammad Mehrabi Gohari;Umer Shah;Joachim Oberhammer","doi":"10.1109/TAP.2024.3466473","DOIUrl":"https://doi.org/10.1109/TAP.2024.3466473","url":null,"abstract":"This article investigates the impact of antenna dispersion on wideband Terahertz (THz) imaging systems. It is demonstrated that the effective bandwidth is reduced from the nominal system bandwidth, and thus, the expected image resolution cannot be reached when the antenna system has inappropriate frequency dispersion characteristics. Besides a theoretical analysis and simulations, experiments were conducted using antennas with different dispersion characteristics in an ultra-wideband 500–750 GHz imaging setup to assess the impact on achievable resolution. When utilizing low dispersion dielectric-lens antennas, the system successfully detected multiple targets with a radius of 0.6 mm even when positioned at close distance (2 mm in cross-range and 3 mm in range). In contrast to that, when using higher dispersion horn antennas, the resolution of a dual-target scenario was reduced to 3 mm in cross-range and 4 mm in range. Furthermore, it is shown that the target position reconstruction accuracy, as well as the signal-to-clutter ratio (SCR), are also improved by 68% and 2.7 dB, respectively, when using low dispersion antennas in the same setup. This investigation, for the first time, highlights the importance of considering antenna dispersion for accurate image reconstruction, particularly for high-resolution wideband THz imaging systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8375-8384"},"PeriodicalIF":4.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10700650","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Planar Near-Field Antenna Measurements With a Uniform Step Larger Than Half-Wavelength

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-30 DOI: 10.1109/TAP.2024.3466471

Raffaele Moretta;Giovanni Petraglia;Fabio Pascariello;Maurizio Feo;Maria Antonia Maisto

{"title":"Planar Near-Field Antenna Measurements With a Uniform Step Larger Than Half-Wavelength","authors":"Raffaele Moretta;Giovanni Petraglia;Fabio Pascariello;Maurizio Feo;Maria Antonia Maisto","doi":"10.1109/TAP.2024.3466471","DOIUrl":"https://doi.org/10.1109/TAP.2024.3466471","url":null,"abstract":"In this article, a new sampling scheme of the near field radiated by a planar source is proposed and assessed. More in detail, this article shows a uniform sampling criterion that allows representing the near field over a plane with a number of measurements lower than the classical half-wavelength sampling. First, a discretization strategy of the near field based on the warping method is recalled from the literature. In the region of the observation domain located in front of the source, the warping sampling scheme employs a nonredundant number of measurements since it predicts the exact positions where the near-field samples must be collected. On the contrary, in the region of the measurement plane beyond the source, it does not return the exact positions of the field samples. For such a reason, a spatially varying oversampling can be used to avoid loss of information in the discretization process and maintain the number of field samples as low as possible. Despite that the warping method represents the state of the art in terms of the number of measurements, it requires acquiring the near field samples over a nonuniform grid. To overcome this drawback, in this article, the spatially varying oversampling is chosen in such a way that the resulting sampling becomes uniform. Such choice still ensures a growth of the sampling rate only at the edges of the observation domain permitting the retrieval of the near field by its samples with fewer measurements than the half-wavelength sampling. Finally, numerical simulations based on synthetic and experimental data corroborate the effectiveness of the approach in recovering both the near field and the far field.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9012-9023"},"PeriodicalIF":4.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859349","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

Millimeter-Wave Wideband, High-Gain, Dual-Polarized Filtering Patch Antenna With Y-Shaped Probe and Shorted C-Shaped Strip 毫米波宽带、高增益、双偏振滤波贴片天线，带 Y 型探头和短 C 型带

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-27 DOI: 10.1109/TAP.2024.3457168

Yiqing Sun;Hao-Tao Hu;Chi Hou Chan

引用次数: 0

A Millimeter-Wave Dual-Polarized Endfire Antenna With Ultrawideband and High Isolation for 5G Multibeam Systems 用于 5G 多波束系统的超宽带和高隔离度毫米波双极化端射天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-27 DOI: 10.1109/TAP.2024.3465604

Qingquan Tan;Kuikui Fan;Weiliang Yu;Leilei Liu;Guo Qing Luo

{"title":"A Millimeter-Wave Dual-Polarized Endfire Antenna With Ultrawideband and High Isolation for 5G Multibeam Systems","authors":"Qingquan Tan;Kuikui Fan;Weiliang Yu;Leilei Liu;Guo Qing Luo","doi":"10.1109/TAP.2024.3465604","DOIUrl":"https://doi.org/10.1109/TAP.2024.3465604","url":null,"abstract":"A ultrawideband, high isolation dual-polarized endfire antenna is presented in this article. Based on the high isolation of the substrate integrated waveguide (SIW) and stripline, we innovatively developed an SIW-fed magnetoelectric (ME) dipole as the vertically polarized (VP) endfire antenna and a stripline-fed tapered slot antenna (TSA) as horizontally polarized (HP) endfire antenna. These two antennas realize ultrawide bandwidth and can share a radiation aperture. Meanwhile, the ME dipole acts as a parasitic structure, which greatly improves the impedance matching of the TSA in the working band. Due to this innovative design, the proposed dual-polarized endfire antenna realizes an operating bandwidth of 60% and a port isolation level exceeding 35 dB. To satisfy the requirements of 5G communication systems, we designed a multibeam antenna system composed of seven dual-polarized endfire antennas and a 3-D-printed Luneburg lens. The measured results indicate that the multibeam antenna achieves an overlapped bandwidth of 58% and a maximum gain of about 20.5 dBi. The gain variation within the scanning range of ±66° was less than 1 dB. With the merits of low cross-polarization, wideband, and high isolation, the presented dual-polarized antenna is an ideal candidate for 5G millimeter-wave (mmWave) systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8251-8261"},"PeriodicalIF":4.6,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540472","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

A Deep Probabilistic Machine Learning Approach to Ray Tracing Path Loss Prediction at 900 MHz 900 MHz 射线跟踪路径损耗预测的深度概率机器学习方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-27 DOI: 10.1109/TAP.2024.3465840

Sotirios P. Sotiroudis;Mohammad A. Matin;Shaohua Wan;Christos Christodoulou;Sotirios K. Goudos

{"title":"A Deep Probabilistic Machine Learning Approach to Ray Tracing Path Loss Prediction at 900 MHz","authors":"Sotirios P. Sotiroudis;Mohammad A. Matin;Shaohua Wan;Christos Christodoulou;Sotirios K. Goudos","doi":"10.1109/TAP.2024.3465840","DOIUrl":"https://doi.org/10.1109/TAP.2024.3465840","url":null,"abstract":"Machine Learning (ML) is extensively being used in order to tackle the problem of radio propagation. Besides the models that rely on tabular data, Deep Learning (DL)-based image-driven models have also emerged. However, significant uncertainty is associated with path loss (PL) forecasting and deterministic ML predictions should be combined with a model for predictive uncertainty. As a result, we take a probabilistic approach by estimating prediction intervals using a deep probabilistic framework. The probabilistic framework attempts to address the issue of conditional bias, which frequently characterizes deterministic ML predictions obtained through error minimization. This is accomplished by quantifying uncertainty, making probabilistic predictions, and incorporating robust optimization techniques into the modeling process. The work at hand fuses images and tabular data into a deep probabilistic ensemble (DPE). More precisely, natural gradient boosting (NGBoost) is being used in order to obtain probabilistic predictions from each input modality separately. These unimodal predictions are then ensembled for each estimation point, according to the inverse of their variance. The proposed model’s results show a significant performance boost against the single-mode predictions in terms of prediction error and uncertainty. To the best of our knowledge, this is the first time that images and tabular data are being combined on the basis of a probabilistically structured ensemble model for a PL modeling problem in electromagnetics.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8728-8738"},"PeriodicalIF":4.6,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540393","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

A Novel Design Approach Using Zero-Pole-Based Multiport Model for Reconfigurable Intelligent Surfaces 基于零极多端口模型的可重构智能表面新设计方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-26 DOI: 10.1109/TAP.2024.3463872

Zhen Zhang;Jun Wei Zhang;Ying Juan Lv;Hui Dong Li;Jiang Luo;Jun Wei Wu;Qiang Cheng

{"title":"A Novel Design Approach Using Zero-Pole-Based Multiport Model for Reconfigurable Intelligent Surfaces","authors":"Zhen Zhang;Jun Wei Zhang;Ying Juan Lv;Hui Dong Li;Jiang Luo;Jun Wei Wu;Qiang Cheng","doi":"10.1109/TAP.2024.3463872","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463872","url":null,"abstract":"Reconfigurable intelligent surfaces (RISs) are of potential use in 5G/6G wireless communications due to their tunable electromagnetic (EM) parameters for flexible beam manipulations. Two important parameters for RIS design are the reflection coefficient of the RIS element and the scattering pattern of the RIS. To realize rapid design of RISs, we propose a zero-pole-based multiport model to calculate the reflection coefficients and scattering patterns of RISs in this work. Specifically, the developed model establishes an accurate mapping relation between the element reflection coefficient and the loads on multiple internal ports by using the multiport S-parameter matrix. Additionally, the vector fitting method is employed to reduce the time cost of data acquisition for multiport S-parameters, in which a hybrid sampling scheme is employed to accelerate computation speed while keeping high accuracy. Using this model, we further develop an efficient far-field pattern prediction and synthesis algorithm for large-scale RIS design based on the antenna radiation superposition principle. The feasibility of the proposed model is demonstrated by an example of 3-bit RIS design, where the simulation results agree well with the measurement.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8564-8574"},"PeriodicalIF":4.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540429","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