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

An Anderson Acceleration Inspired VBIM for Solving the Electromagnetic Inverse Scattering Problems 基于Anderson加速度的VBIM求解电磁逆散射问题

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2025.3528749

Hongguang Zhou;Yanwen Zhao;Yan Wang;Danfeng Han;Jun Hu

{"title":"An Anderson Acceleration Inspired VBIM for Solving the Electromagnetic Inverse Scattering Problems","authors":"Hongguang Zhou;Yanwen Zhao;Yan Wang;Danfeng Han;Jun Hu","doi":"10.1109/TAP.2025.3528749","DOIUrl":"https://doi.org/10.1109/TAP.2025.3528749","url":null,"abstract":"This article proposes an adaptive damping Anderson acceleration (ADAA) method that augments the variational Born iterative method (VBIM) for solving the electromagnetic inverse scattering problems (ISPs). Traditionally, the Anderson acceleration (AA) method accelerates convergence in fixed-point iterations by extrapolating solutions from a linear combination of previous iterations. However, different from the fixed-point iteration, whose operator is definite, the mapping operator in the VBIM is approximate and noncontractive. A necessary modification is made by substituting the gradient-acceptance-based strategy in standard AA to the total-quantity-acceptance-based strategy. Additionally, considering the later work in AA demonstrates a damping factor boosts the convergence speed of AA, we present an adaptive damping strategy to further augment the inversion’s convergence rate. The dual-enhancements significantly improve both the speed and robustness of convergence. From a mathematical perspective, the VBIM-ADAA method seeks an exact data equation solution in a subspace spanned by previous regularization solutions during each iteration. Furthermore, the robustness facilitated by VBIM-ADAA permits a broader range of choices for the regularization parameter. By leveraging QR factorization (via the Gram-Schmidt process), we analyze the VBIM-ADAA’s characteristics under different mapping operators. Extensive numerical experiments, involving both synthetic and real-world data, verify the superior convergence, robustness, and better accuracy of the VBIM-ADAA compared to the conventional VBIM. Moreover, numerical experiments demonstrate that the computational time consumed by the ADAA is negligible, which makes it a practical and efficient method for solving ISPs.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2585-2595"},"PeriodicalIF":4.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800773","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

Corrections to “Single-Transistor Impedance Matching Circuit for Over-Hundred-Octave Active Antennas” 修正“超过百倍频有源天线的单晶体管阻抗匹配电路”

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2024.3504004

Shuyu Wang;Yue Li

引用次数: 0

Numerical and Analytical Methods for Complex Electromagnetic Media 复杂电磁介质的数值与解析方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2024.3519911

引用次数: 0

The Combined Enforcement of Normal and Tangential Boundary Conditions on the PEC-Material Interfaces in the Volume-Surface Integral Equation 体-面积分方程中pec -材料界面法向和切向边界条件的联合实施

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2024.3524425

Jinbo Liu;Zengrui Li;Jiming Song

{"title":"The Combined Enforcement of Normal and Tangential Boundary Conditions on the PEC-Material Interfaces in the Volume-Surface Integral Equation","authors":"Jinbo Liu;Zengrui Li;Jiming Song","doi":"10.1109/TAP.2024.3524425","DOIUrl":"https://doi.org/10.1109/TAP.2024.3524425","url":null,"abstract":"In the moment method solution of the volume-surface integral equation (VSIE) modeling composite objects, the normal and tangential boundary conditions (TBCs) of electric and magnetic fields are combined and collectively enforced on the perfect electric conductor (PEC)–material interfaces (PMIs). The numbers of both electric and magnetic volumetric unknowns are therefore significantly reduced. Based on the enforcement of the normal boundary condition (BC), the Schaubert-Wilton-Glisson (SWG) coefficients of the volume currents that are defined on the PEC-terminated tetrahedral faces can be straightforwardly calculated, which are no longer volumetric unknowns. Similarly, due to the enforcement of the TBC, two coefficients of the four SWG bases defined on a tetrahedron, at least one of whose faces is PEC-terminated, can be determined by the other two using the weighted least-square (LS) method. Furthermore, due to the explicit satisfaction of BCs, the proposed BCs-based VSIE improves the solution accuracy. The efficiency and validity of the proposed approach are verified by reliable numerical experiments, in which both the isotropic and anisotropic materials are involved.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3364-3369"},"PeriodicalIF":4.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918569","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 Circularly Polarized Metasurface Antenna Based on Inward and Outward Surface Wave Duplexing 基于内外表面波双工的双圆极化超表面天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2025.3529257

Ravikanth Thanikonda;Marco Faenzi;Alberto Toccafondi;Enrica Martini;Stefano Maci

{"title":"Dual Circularly Polarized Metasurface Antenna Based on Inward and Outward Surface Wave Duplexing","authors":"Ravikanth Thanikonda;Marco Faenzi;Alberto Toccafondi;Enrica Martini;Stefano Maci","doi":"10.1109/TAP.2025.3529257","DOIUrl":"https://doi.org/10.1109/TAP.2025.3529257","url":null,"abstract":"This article proposes the design and numerical validation of a dual-polarized metasurface (MTS)-based antenna, in which the two polarizations share the same circular aperture. The design exploits the interaction of duplexed inward- and outward-traveling surface waves (SWs) with an unwinding spiral MTS impedance pattern. The two inward/outward illuminations share a common radiating aperture and are originated by an integrated triaxial-cable feeding. The inward cylindrical wave is launched in a parallel plate waveguide (PPWG) by the external part of the triaxial cable (TC) and then redirected inward by a corner reflector at the aperture rim. Interacting with the anisotropic-modulated impedance boundary condition (IBC), it provides a broadside left-handed circularly polarized (LHCP) beam. On the other hand, the outward SW originates from the center as excited by a monopole connected to the inner conductor of the TC and provides a right-handed circularly polarized (RHCP) broadside radiation. New design formulas are derived for the total efficiency of the two modes. A practical feeding structure is designed and validated, featuring a coplanar-to-triaxial waveguide transition for broadband performance, ensuring a low-profile and simple configuration.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"2700-2712"},"PeriodicalIF":4.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10847702","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929670","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

Editorial 2024 Reflections and Perspectives for the Year Ahead 社论 2024 对未来一年的思考与展望

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2025.3527376

Konstantina S. Nikita

引用次数: 0

An Efficient Beam Synthesis Method With Coupling Compensation in Wideband Tightly Coupled Arrays 宽带紧耦合阵列中一种有效的耦合补偿波束合成方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-17 DOI: 10.1109/TAP.2025.3528722

Jinyan Ma;Da Li;Ruifeng Li;Er-Ping Li

{"title":"An Efficient Beam Synthesis Method With Coupling Compensation in Wideband Tightly Coupled Arrays","authors":"Jinyan Ma;Da Li;Ruifeng Li;Er-Ping Li","doi":"10.1109/TAP.2025.3528722","DOIUrl":"https://doi.org/10.1109/TAP.2025.3528722","url":null,"abstract":"Wideband tightly coupled arrays (WTCAs) are essential components of modern advanced communication systems. However, the inevitable mutual coupling will lead to severe beam deterioration problems and heavy computational costs. This article introduces a notable and efficient beam synthesis methodology for WTCAs with coupling characterization and compensation. Specifically, the mutual coupling is represented by the modal excitation coefficients (MECs) via the generalized mutual impedance, which is efficiently obtained by the proposed full-wave partial element equivalent circuit method within a wide frequency band. Notably, this hybrid method demonstrates robustness in achieving beampattern calculation compared to traditional full-wave analysis methods. Subsequently, the modified excitation factor (MEF) is proposed to compensate the beampattern deterioration caused by coupling. Furthermore, a frequency-dependent tandem architecture is employed to enable real-time beam synthesis for WTCAs. Based on the MEF and tandem architecture, the proposed methodology shows excellent performance to address the challenges of beam deterioration and real-time beam synthesis. Finally, the versatility and efficiency of the proposed framework are comprehensively demonstrated through some numerical examples.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3156-3166"},"PeriodicalIF":4.6,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925116","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 Broadband Multipole Method for Accelerated Mutual Coupling Analysis of Large Irregular Arrays Including Rotated Antennas 包含旋转天线的大型不规则阵列的宽带多极子加速互耦合分析

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-17 DOI: 10.1109/TAP.2025.3528766

Quentin Gueuning;Eloy de Lera Acedo;Anthony Keith Brown;Christophe Craeye;Oscar O’Hara

引用次数: 0

Eigenmodes of Metafilm Waveguides With Nonlocal Two-Sided Boundary Conditions 具有非局部双面边界条件的元膜波导的本征模

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-17 DOI: 10.1109/TAP.2025.3528760

Sergey Bankov;Kirill Klionovski

{"title":"Eigenmodes of Metafilm Waveguides With Nonlocal Two-Sided Boundary Conditions","authors":"Sergey Bankov;Kirill Klionovski","doi":"10.1109/TAP.2025.3528760","DOIUrl":"https://doi.org/10.1109/TAP.2025.3528760","url":null,"abstract":"Metafilm waveguides are used in broad areas of microwave, millimeter-wave, and terahertz applications. In electromagnetic simulations, equivalent boundary conditions represent metafilms for their easy modeling. Nonlocal two-sided boundary conditions of the second order provide adequate modeling accuracy for most metafilms. This article considers a planar metafilm waveguide described by the indicated boundary conditions. It is demonstrated that the classic approach for waveguide eigenmode determination does not provide correct results when applied to the metafilms with nonlocal boundary conditions. The reasons for the incorrectness are some unusual properties of metafilms with nonlocal boundary conditions and the requirement to satisfy a so-called boundary-contact condition for an irregular metafilm, which provides the uniqueness of a boundary-contact problem solution. A novel approach is introduced for correctly determining continuous and discrete eigenmode spectrums in open and shielded waveguides with nonlocal two-sided boundary conditions. An irregular metafilm in a parallel-plate waveguide is considered. It is demonstrated that using the corrected eigenmodes satisfies the boundary-contact condition at the point of irregularity. Some numerical results are presented, demonstrating the calculating accuracy of the proposed analytical approach.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 3","pages":"1630-1639"},"PeriodicalIF":4.6,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553500","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

Theory and Computation of Substructure Characteristic Modes 子结构特征模态的理论与计算

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-17 DOI: 10.1109/TAP.2025.3528478

Mats Gustafsson;Lukas Jelinek;Miloslav Capek;Johan Lundgren;Kurt Schab

引用次数: 0