IEEE Transactions on Antennas and Propagation最新文献_第4页

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IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3540682

引用次数: 0

Design of MIMO Planar Sparse Array and Improved Back-Projection Algorithm for High-Performance 3-D Microwave Imaging 面向高性能三维微波成像的MIMO平面稀疏阵列设计及改进反投影算法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3544650

Zhengyue Dong;Yuke He;Kuiwen Xu;Shaoqing Hu;Qinyi Lv;Xiaokang Qi;Xuetiao Ma;Xiaotong Li;Chao Sun;Jiangtao Su;Wenjun Li

{"title":"Design of MIMO Planar Sparse Array and Improved Back-Projection Algorithm for High-Performance 3-D Microwave Imaging","authors":"Zhengyue Dong;Yuke He;Kuiwen Xu;Shaoqing Hu;Qinyi Lv;Xiaokang Qi;Xuetiao Ma;Xiaotong Li;Chao Sun;Jiangtao Su;Wenjun Li","doi":"10.1109/TAP.2025.3544650","DOIUrl":"https://doi.org/10.1109/TAP.2025.3544650","url":null,"abstract":"A novel two-step iterative optimization method could be used in microwave and mm-wave bands for optimal topology of 2-D sparse multiple-input multiple-output (MIMO) arrays, and an improved back-projection algorithm (IBPA) for near-range scenarios has been proposed to achieve high-resolution 3-D imaging. According to point spread functions (PSFs), the array topology results from the proposed design method have superior performance on sidelobe level both in the interference region (IR) and non-IR (NIR), and the obtained peak sidelobe levels (PSLs) are lower than the conventional topologies over 2 dB. The IBPA has weighting factors incorporated into its forward physical wave equations to improve accuracy of the model. The imaging capabilities of the proposed array and IBPA have been experimentally verified. The proposed array could further mitigate the artifact distribution in target image than conventional arrays which is consistent to theoretical analysis. The proposed IBPA could provide higher resolution and lower PSLs without increasing the computational complexity.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"4000-4010"},"PeriodicalIF":4.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219828","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

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

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3540690

引用次数: 0

Microwave, mm and THz Imaging and Sensing Systems and Technologies for Medical Applications 微波，毫米和太赫兹成像和传感系统和技术的医疗应用

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3540688

引用次数: 0

Differential Coaxial Coils for Frequency-Independent Deep Magnetic Focusing on Implantable Devices 用于植入式器件的非频率深磁聚焦的差分同轴线圈

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3545627

Syed Ahson Ali Shah;Ye R. Kim;Yun-Su Kim;Seog Y. Jeong;Chun T. Rim

{"title":"Differential Coaxial Coils for Frequency-Independent Deep Magnetic Focusing on Implantable Devices","authors":"Syed Ahson Ali Shah;Ye R. Kim;Yun-Su Kim;Seog Y. Jeong;Chun T. Rim","doi":"10.1109/TAP.2025.3545627","DOIUrl":"https://doi.org/10.1109/TAP.2025.3545627","url":null,"abstract":"Magnetic field focusing in longitudinal direction has been a missing link for 3-D synthesized magnetic focusing (3D SMF). Deep magnetic focusing (DMF) by multiple coaxial coils, a sort of 3D SMF, is first proposed in this article, where magnetic field becomes maximum at the focal range in longitudinal direction. DMF is requisite for transcranial magnetic stimulation (TMS) and wireless power transfer (WPT). As the simplest DMF, a set of differential coils with opposite current direction is implemented. Optimum coil currents, coil radii, and coil distance are designed to provide with zero magnetic field at zero range and maximum magnetic field at a focal range. This DMF performance is found to be achieved with a penalty of peak magnetic field reduction. Experiments for the differential coils of diameters 10 and 5 cm with 3 cm gap showed 4 cm depth DMF within 6 cm diameter. Specific numbers of turns make the DMF be driven by only a single-voltage source, which is first adopted in SMF. The frequency versatile DMF characteristic is experimentally verified for 60 Hz and 40 kHz, where 27 mW is delivered to a focal point that is a demonstration for safer WPT of implantable devices.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3792-3801"},"PeriodicalIF":4.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219829","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

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 : 2025-03-04 DOI: 10.1109/TAP.2025.3540686

引用次数: 0

Ray Launching-Based Computation of Exact Paths With Noisy Dense Point Clouds 基于光线发射的有噪声稠密点云精确路径计算

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3546110

Niklas Vaara;Pekka Sangi;Miguel Bordallo López;Janne Heikkilä

{"title":"Ray Launching-Based Computation of Exact Paths With Noisy Dense Point Clouds","authors":"Niklas Vaara;Pekka Sangi;Miguel Bordallo López;Janne Heikkilä","doi":"10.1109/TAP.2025.3546110","DOIUrl":"https://doi.org/10.1109/TAP.2025.3546110","url":null,"abstract":"Point clouds have been a recent interest for ray tracing (RT)-based radio channel characterization, as sensors such as RGB-D cameras and laser scanners can be utilized to generate an accurate virtual copy of a physical environment. In this article, a novel ray launching (RL) algorithm is presented, which operates directly on noisy point clouds acquired from sensor data. It produces coarse paths that are further refined to exact paths consisting of reflections and diffractions. A commercial RT tool is utilized as the baseline for validating the simulated paths. A significant majority of the baseline paths is found. The robustness to noise is examined by artificially applying noise along the normal vector of each point. It is observed that the proposed method is capable of adapting to noise and finds similar paths compared to the baseline path trajectories with noisy point clouds. This is prevalent especially if the normal vectors of the points are estimated accurately. Finally, a simulation is performed with a reconstructed point cloud and compared against channel measurements and the baseline paths. The resulting paths demonstrate similarity with the baseline path trajectories and exhibit an analogous pattern to the aggregated impulse response extracted from the measurements. The code is available at <uri>https://github.com/nvaara/NimbusRT</uri>","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3270-3283"},"PeriodicalIF":4.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10910023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918820","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

Pulsed Electromagnetic Field Interaction With a Transmission Line: An Analytical Traveling-Wave Approach Based on Reciprocity 脉冲电磁场与传输线的相互作用：基于互易性的行波解析方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3546055

Martin Štumpf;Giulio Antonini;Ioan E. Lager;Jonas Ekman

引用次数: 0

Nonvolatile 1-bit Intelligent Reflective Metasurface for RF Wave Manipulation and Control 用于射频波处理和控制的非易失性1位智能反射超表面

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI: 10.1109/TAP.2025.3544663

Xiaoyu Xiao;Zirui Zhang;Yize Li;Yifan Mao;Zhirun Hu

{"title":"Nonvolatile 1-bit Intelligent Reflective Metasurface for RF Wave Manipulation and Control","authors":"Xiaoyu Xiao;Zirui Zhang;Yize Li;Yifan Mao;Zhirun Hu","doi":"10.1109/TAP.2025.3544663","DOIUrl":"https://doi.org/10.1109/TAP.2025.3544663","url":null,"abstract":"Semiconductor switches have played a crucial role in electronically reconfigurable circuits and systems. However, their power consumption, especially static power dissipation is still a major challenge. As the number of switches increases in modern wireless communication and sensing systems, such as reconfigurable antenna arrays and large intelligent reflective surfaces for 5G wireless communications and microwave holography, static power consumption becomes enormous, resulting in low system power efficiency and requiring thermal dissipation management, which not only hinders their applications but also increases operational costs. To address this issue, nonvolatile switches enabled reconfigurable <inline-formula> <tex-math>$6times 6$ </tex-math></inline-formula> metasurface with zero static power consumption is demonstrated. We also report the fabrication and characterization of the nonvolatile switch that shows promising performance for high endurance. By controlling the switch states on the metasurface, the reflected electromagnetic wave can be effectively manipulated without any static power supply.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2640-2647"},"PeriodicalIF":4.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800858","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

Wideband RCS Reduction of Dual-Band Fabry-Perot Cavity Antenna Using Pancharatnam-Berry Phase Coding Metasurface and AMC Surface 基于Pancharatnam-Berry相位编码超表面和AMC表面的双频法布里-珀罗腔天线宽带RCS降低

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-03 DOI: 10.1109/TAP.2025.3545650

Lei Xu;Yufeng Liu;Wenmei Zhang

{"title":"Wideband RCS Reduction of Dual-Band Fabry-Perot Cavity Antenna Using Pancharatnam-Berry Phase Coding Metasurface and AMC Surface","authors":"Lei Xu;Yufeng Liu;Wenmei Zhang","doi":"10.1109/TAP.2025.3545650","DOIUrl":"https://doi.org/10.1109/TAP.2025.3545650","url":null,"abstract":"In this communication, we propose a dual-band Fabry-Perot (F-P) cavity antenna with a wideband low radar cross section (RCS) by integrating a Pancharatnam-Berry phase coding metasurface (PBPCM) and artificial magnetic conductor (AMC) surfaces. This antenna comprises two partially reflective surfaces (PRSs) that form two nested F-P cavities for signals in two bands. To reduce the monostatic RCS at high frequencies, a PBPCM is placed on the top side of the upper PRS, leveraging its ability to redirect reflected waves into different directions by encoding the phase on the metasurface. Additionally, two AMC surfaces etched on the top side of both the lower PRS and the ground plane further reduce the low-frequency RCS through phase cancellation. The overall antenna profile is also minimized, owing to the AMC’s flexible phase adjustment. The simulated and measured results verify the feasibility of the proposed method. The prototyped F-P cavity antenna exhibits a measured -10 dB impedance bandwidth of 4.15–4.8 and 7.8–8.4 GHz, with peak gains of 10 dBi at 4.45 GHz and 15.9 dBi at 8.3 GHz, respectively. Moreover, a wideband RCS-reduction bandwidth from 3 to 16 GHz is achieved under both x- and y-polarizations.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"4158-4163"},"PeriodicalIF":4.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219619","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