IEEE Transactions on Antennas and Propagation最新文献_第8页

A Constrained Lens Antenna Generating One Thousand Dual-Polarized Beams for High-Throughput Satellite Systems 高通量卫星系统中产生1000双极化波束的约束透镜天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-19 DOI: 10.1109/TAP.2025.3540285

Gianfranco Ruggerini;Lino Russo;Jaione Galdeano;Piero Angeletti;Giovanni Toso

引用次数: 0

Efficient Array Pattern Synthesis via Principal Angle-Based Sparse Sampling (PABSS) 基于主角稀疏采样（PABSS）的高效阵列方向图合成

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-17 DOI: 10.1109/TAP.2025.3539963

Liyang Chen;Yanhui Liu

引用次数: 0

High-Gain, Low-Cost Polarization-Reconfigurable Antenna With Switchable Single and Dual Beams by Digital Phase-Coding Method 基于数字相位编码方法的高增益、低成本极化可重构单波束和双波束可切换天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-17 DOI: 10.1109/TAP.2025.3539944

Menglong Chen;Shiwen Lei;Jing Shu;Kai Sun;Bo Chen;Haoquan Hu

{"title":"High-Gain, Low-Cost Polarization-Reconfigurable Antenna With Switchable Single and Dual Beams by Digital Phase-Coding Method","authors":"Menglong Chen;Shiwen Lei;Jing Shu;Kai Sun;Bo Chen;Haoquan Hu","doi":"10.1109/TAP.2025.3539944","DOIUrl":"https://doi.org/10.1109/TAP.2025.3539944","url":null,"abstract":"A high-gain polarization-reconfigurable antenna array with switchable single and dual beams is proposed in this article. To realize the polarization-reconfigurable and beam-switching functions, a compact digital phase-coding antenna (DPCA) element is first presented. By manipulating the operating probes and branches, right-/left-handed circular polarization (RHCP/LHCP) with 2-bit phase code and 0°-/90°-linear polarization (0°-LP/90°-LP) with 1-bit phase code are realized. Moreover, the realized gain is enhanced by introducing a novel annular-slotted parasitic patch. Then, beam-switching principle is explored and confirmed with a four-element array. As a result, both the single and dual beams are switchable by controlling the phase code of each element. The element and array are fabricated and verified, respectively. The array achieves 28 reconfigurable states, i.e., the single beam for CP states and the dual beam for CP/LP states are steered within ±30° and ±51°, respectively. Besides, the proposed array achieves high realized gains of 11.27 dBi (single beam)/9.03 dBi (dual beam) and efficiency up to 85.4% at the central operating frequency. The measured results indicate that the proposed DPCA has low cost, compact size, high gain, and excellent pattern/polarization control capacity, providing new insights into the realization of satellite antennas and smart antennas.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3639-3653"},"PeriodicalIF":4.6,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229473","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

Meta-Learning-Assisted Untrained Neural Network for Electromagnetic Inverse Scattering Problems 电磁逆散射问题的元学习辅助非训练神经网络

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-17 DOI: 10.1109/TAP.2025.3539938

Qian Huang;Chang Li;Xiuzhu Ye;Kuiwen Xu;Rencheng Song

引用次数: 0

Frequency-Selective Surface With Dual Polarization and Ultrawide Passband 双极化超宽通带频率选择表面

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-17 DOI: 10.1109/TAP.2025.3539960

Shi-Lin Yang;Fu-Shun Zhang;Li-Wei Song;Fan Zhang

引用次数: 0

Micro-Doppler-Coded Drone Identification via Resonant Tagging 共振标记的微多普勒编码无人机识别

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-14 DOI: 10.1109/TAP.2025.3540278

Dmytro Vovchuk;Mykola Khobzei;Vladyslav Tkach;Oleg Eliiashiv;Omer Tzidki;Konstantin Grotov;Aviel Glam;Pavel Ginzburg

{"title":"Micro-Doppler-Coded Drone Identification via Resonant Tagging","authors":"Dmytro Vovchuk;Mykola Khobzei;Vladyslav Tkach;Oleg Eliiashiv;Omer Tzidki;Konstantin Grotov;Aviel Glam;Pavel Ginzburg","doi":"10.1109/TAP.2025.3540278","DOIUrl":"https://doi.org/10.1109/TAP.2025.3540278","url":null,"abstract":"The forthcoming era of massive drone delivery deployment in urban environments raises a need to develop reliable control and monitoring systems. While active solutions, i.e., wireless sharing of a real-time location between air traffic participants and control units, are of use, developing additional security layers is appealing. Among various surveillance systems, radars offer distinct advantages by operating effectively in harsh weather conditions and providing high-resolution reliable detection overextended ranges. However, contrary to traditional airborne targets, small drones and copters pose a significant problem for radar systems due to their relatively small radar cross sections (RCSs). Here, we propose an efficient approach to label drones by attaching passive resonant scatterers to their rotor blades. While blades themselves generate micro-Doppler rotor-specific signatures, those are typically hard to capture at large distances owing to small signal-to-noise ratios (SNRs) in radar echoes. Furthermore, drones from the same vendor are indistinguishable by their micro-Doppler signatures. Here, we demonstrate that equipping the blades with multiple resonant scatterers not only extends the drone detection range but also assigns it a unique micro-Doppler encoded identifier. By extrapolating the results of our laboratory and outdoor experiments to real high-grade radar surveillance systems, we estimate that the clear-sky identification range for a small drone is approximately 3–5 km, whereas it would be barely detectable at 1000 m if not labeled. This performance places the proposed passive system on par with its active counterparts, offering the clear benefits of reliability and resistance to jamming.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3917-3927"},"PeriodicalIF":4.6,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219624","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

Accelerated Boundary Integral Solution of 3-D Maxwell’s Equations Using the Interpolated Factored Green Function Method 用插值格林函数法加速求解三维麦克斯韦方程组的边界积分

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-14 DOI: 10.1109/TAP.2025.3540288

Jagabandhu Paul;Constantine Sideris

{"title":"Accelerated Boundary Integral Solution of 3-D Maxwell’s Equations Using the Interpolated Factored Green Function Method","authors":"Jagabandhu Paul;Constantine Sideris","doi":"10.1109/TAP.2025.3540288","DOIUrl":"https://doi.org/10.1109/TAP.2025.3540288","url":null,"abstract":"This article presents an <inline-formula> <tex-math>$mathcal {O}(Nlog N)$ </tex-math></inline-formula> method for the numerical solution of Maxwell’s equations for dielectric scatterers using a 3-D boundary integral equation (BIE) method. The underlying BIE method used is based on a hybrid Nyström collocation method using Chebyshev polynomials. It is well known that such an approach produces a dense linear system, which requires <inline-formula> <tex-math>$mathcal {O}(N^{2})$ </tex-math></inline-formula> operations in each step of an iterative solver. In this work, we propose an approach using the recently introduced Interpolated Factored Green Function (IFGF) acceleration strategy to reduce the cost of each iteration to <inline-formula> <tex-math>$mathcal {O}(Nlog N)$ </tex-math></inline-formula>. To the best of our knowledge, this article presents the first-ever application of the IFGF method to fully vectorial 3-D Maxwell problems. The Chebyshev-based integral solver and IFGF method are first introduced, followed by the extension of the scalar IFGF to the full-vectorial Maxwell case. Several examples are presented, verifying the <inline-formula> <tex-math>$mathcal {O}(Nlog N)$ </tex-math></inline-formula> computational complexity of the approach, including scattering from spheres, complex computer-aided design (CAD) models, and nanophotonic waveguiding devices. In one particular example with more than 6 million unknowns, the accelerated IFGF solver runs <inline-formula> <tex-math>$42times $ </tex-math></inline-formula> faster than the unaccelerated method.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3814-3826"},"PeriodicalIF":4.6,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219622","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 Continuous Direct Antenna Modulation System Through Varactor Diode Tuning 通过变容二极管调谐的新型连续直接天线调制系统

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-14 DOI: 10.1109/TAP.2025.3540276

Ian M. Broadbooks;Matthew C. Smith;Rohith M. Radhakrishnan;Daniel F. Sievenpiper

{"title":"A Novel Continuous Direct Antenna Modulation System Through Varactor Diode Tuning","authors":"Ian M. Broadbooks;Matthew C. Smith;Rohith M. Radhakrishnan;Daniel F. Sievenpiper","doi":"10.1109/TAP.2025.3540276","DOIUrl":"https://doi.org/10.1109/TAP.2025.3540276","url":null,"abstract":"In this article, we propose and evaluate a direct antenna modulation (DAM) system. We attempt to bypass the upper bound on an efficiency bandwidth product (EBP) for an electrically small antenna (ESA), which is related to the lower bound on antenna Q established by Wheeler and Chu. We do this by using a time-varying system, breaking the time-invariance assumed in the derivation of these bounds. There is thus potential to see an EBP that exceeds the limitation for an antenna of a given size. The proposed antenna is based on a top-loaded monopole antenna and then utilizes varactor diodes to continuously vary the resonance frequency of the antenna as a function of time. We use a frequency-modulated (FM) input signal that is synchronous to the tuning of the antenna resonance, matching the instantaneous frequency of the input signal to the current resonance of the antenna, thus enabling the transmission of an arbitrary FM signal. We evaluate the performance of the antenna through the use of full-wave solver simulations, equivalent circuit model simulations, and prototype measurements. We demonstrate through both simulation and physical measurements that time variation in the antenna synchronized with the input signal improves the EBP of the antenna in comparison to the linear time-invariant (LTI) case.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2416-2426"},"PeriodicalIF":4.6,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800942","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 Forward Approach to Establish Parametric Scattering Center Model for Dielectric-PEC Composite Targets 建立介电-PEC 复合目标参数散射中心模型的前瞻性方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-13 DOI: 10.1109/TAP.2025.3539453

Yan Zhu;Siyuan He;Zhidan Bian;Yunhua Zhang;Qi Huang;Fan Zhang

{"title":"A Forward Approach to Establish Parametric Scattering Center Model for Dielectric-PEC Composite Targets","authors":"Yan Zhu;Siyuan He;Zhidan Bian;Yunhua Zhang;Qi Huang;Fan Zhang","doi":"10.1109/TAP.2025.3539453","DOIUrl":"https://doi.org/10.1109/TAP.2025.3539453","url":null,"abstract":"In this article, a forward approach is proposed to establish the 3-D scattering center (SC) model for dielectric-perfect electrically conducting (PEC) composite targets (including nested targets). First, various-order SCs are separated from computer-aided design (CAD) models by ray tracing and clustering technology applicable for the dielectric-PEC composite target; in particular, the multiple refraction-containing coupling scattering mechanisms are involved in the scattering of nested targets. Furthermore, a set of forward methods (FMs) is developed to determine the parameters of 3-D attribute SCs, including amplitude, frequency factor, position, and length. The method addresses the challenge of deriving the model parameters of multi-order refraction-containing coupling SCs generated by multiple bounces and complex propagation media. Finally, this approach is validated by establishing the parametric model of several composite targets (including nested targets), and the synthetic aperture radar (SAR) image reconstructed by the model behaves a good agreement with the result of the RLGO algorithm in FEKO. This approach provides a clear physical image of the SC formation process. It helps construct a target feature database and enables radar target recognition via image-domain characteristics and physically relevant model parameters.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2533-2547"},"PeriodicalIF":4.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800983","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

Interaction Between Switched Oscillator Sources and Their Loading Antennas in Determining System Performance 开关振荡器源与负载天线之间的相互作用决定系统性能

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-13 DOI: 10.1109/TAP.2025.3539450

Fatemeh Babaeian;J. Scott Tyo;John E. Fletcher

{"title":"Interaction Between Switched Oscillator Sources and Their Loading Antennas in Determining System Performance","authors":"Fatemeh Babaeian;J. Scott Tyo;John E. Fletcher","doi":"10.1109/TAP.2025.3539450","DOIUrl":"https://doi.org/10.1109/TAP.2025.3539450","url":null,"abstract":"Switched oscillators (SWOs) are compact mesoband sources for high-peak-power applications. SWOs create a quarter-wave standing wave oscillation by initiating a self-breakdown, short-circuit at one end of the SWO and an open circuit at the other. Often, the open-circuit condition is replaced with a high-impedance load, such as an antenna. However, the presence of an antenna impacts the oscillation performance, and characteristics such as spectral content are quite different for the combined system than expected from separate analyses of the SWO and antenna. Although significant efforts have been made in the literature to study and model the SWO, there is a gap in the understanding of the interaction between the source and any particular load antenna. In this work, several antennas commonly used with SWO systems are modeled to gain a better understanding of the impact of the antenna’s geometry and impedance on the system’s overall performance. Using a combination of circuit and full-wave modeling, the aspects of the loading antenna that have the greatest impact on overall system performance are identified.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2628-2639"},"PeriodicalIF":4.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800857","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