IEEE Open Journal of Antennas and Propagation最新文献_第4页

Dual-Mode, Dual-Polarization Fully-Woven Textile Antenna for Simultaneous Wireless Information and Power Transfer Applications in the 2.4 GHz Band 2.4 GHz频段双模双极化全编织纺织天线用于同时无线信息和电力传输

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-02-12 DOI: 10.1109/OJAP.2025.3541420

Miguel Fernández;Carlos Vázquez;Samuel Ver Hoeye

{"title":"Dual-Mode, Dual-Polarization Fully-Woven Textile Antenna for Simultaneous Wireless Information and Power Transfer Applications in the 2.4 GHz Band","authors":"Miguel Fernández;Carlos Vázquez;Samuel Ver Hoeye","doi":"10.1109/OJAP.2025.3541420","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3541420","url":null,"abstract":"In this work, a dual-mode, dual-polarization fully-woven textile antenna for simultaneous wireless information and power transfer in the 2.4 GHz band is presented. It is based on a square patch with two independent ports. The first port is implemented with an offset T-match structure, to which a singlediode rectifier is connected. The selected feeding technique allows to obtain complex-conjugate impedance matching with the rectifier and right-hand circular polarization for the wireless power transfer mode. On the other hand, for the information transfer mode, a coaxial probe is used to excite the antenna with left-hand circular polarization, in order to minimize the coupling between both modes. The combination of fully-woven technology with the implementation of the rectifier on a carrier thread provides a high degree of integration and robustness. A prototype was implemented and experimentally characterized, showing good agreement with simulation results. Furthermore, the measured RF-DC conversion efficiency in the wireless power transfer mode is about 50% when the available power at the rectifier input is -10 dBm, which is comparable with the state of the art for textile rectennas.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"603-612"},"PeriodicalIF":3.5,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10883645","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Fed DRA Subarrays Featuring Versatile Polarization Reconfigurability With High Port Isolation and Suppressed Cross-Polar Radiations 双馈DRA子阵列具有高端口隔离和抑制交叉极辐射的多功能偏振可重构性

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-02-04 DOI: 10.1109/OJAP.2025.3538686

Satyajit Chakrabarti;Debatosh Guha

{"title":"Dual-Fed DRA Subarrays Featuring Versatile Polarization Reconfigurability With High Port Isolation and Suppressed Cross-Polar Radiations","authors":"Satyajit Chakrabarti;Debatosh Guha","doi":"10.1109/OJAP.2025.3538686","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3538686","url":null,"abstract":"near square Dielectric Resonator Antenna (DRA) geometry with dual-aperture feeding has been explored. This aims in achieving a number of attractive features from a standalone unit as well as a 4-element subarray. Unlike the earlier designs, it demonstrates four reconfigurable polarization states which are realized by conceiving a new near square shape of the DRA along with a novel feeding concept, proposed for the first time. They enable the subarray to significantly enhance the cross-polar discrimination (XPD). The design principles for dual-linear and dual-circular polarizations have been demonstrated and experimentally verified using a set of S-band prototypes. A dedicated digital phase network cum controller incorporating active switches has also been fabricated for practical examinations. A standalone prototype exhibits over 24.59% 10-dB return loss bandwidth at both ports with more than 40 dB inter-port isolation. It promises about 5.9 dBi/dBic consistent peak gain for all polarization states with more than 20 dB XPD. The subarray prototype reveals comparable 10-dB return loss bandwidths with more than 30 dB port-isolation and 25 dB XPD. The peak gain appears consistently around 11 dBi/dBic for all polarization states.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"560-577"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10870296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stability Analysis of the EFIE-IBC Formulation and Regularization via Spatial Filtering EFIE-IBC 公式的稳定性分析和通过空间滤波进行正则化

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-02-04 DOI: 10.1109/OJAP.2025.3538797

Margaux Bruliard;Marcello Zucchi;Giuseppe Vecchi

{"title":"Stability Analysis of the EFIE-IBC Formulation and Regularization via Spatial Filtering","authors":"Margaux Bruliard;Marcello Zucchi;Giuseppe Vecchi","doi":"10.1109/OJAP.2025.3538797","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3538797","url":null,"abstract":"The Impedance Boundary Condition (IBC) is a homogenization approximation of great importance, especially in the design of metasurfaces. However, the standard Electric-Field Integral-Equation formulation of the IBC boundary-value problem (EFIE-IBC) has been shown to lead to numerical instabilities for some impedance ranges of practical interest, in particular inductive reactances. This contribution shows that the numerical instabilities are due to an intrinsic ill-conditioning of the EFIE-IBC operator for the concerned surface impedance values, that can degenerate into an ill-posedness that does not allow for definite solution. Hence, the stable discretization of the EFIE-IBC operator requires a regularization. The analysis leads to a proposed regularization by systematically limiting the wavenumber spectrum of the basis functions, which amounts to a spatial filtering. This is implemented using entire-domain basis functions. Given the possible ill-posedness, we devise two “ground truth” test examples starting from a physical metasurface, then approximated via IBC. Comparison to ground truth results shows that the standard EFIE-IBC may lead to significant errors, and that these may be challenging to detect. Conversely, the regularized system yields stable results that well match the ground truth of the physical structure of which the IBC is an approximation.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"578-593"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10870329","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Sub-Aperture-Based Calibration Algorithm for MIMO Antenna Arrays 一种基于子孔径的MIMO天线阵列标定算法

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-31 DOI: 10.1109/OJAP.2025.3537681

Matthias Linder;Daniel Schmidt;Dominik Schwarz;Nico Riese;Christian Waldschmidt

{"title":"A Sub-Aperture-Based Calibration Algorithm for MIMO Antenna Arrays","authors":"Matthias Linder;Daniel Schmidt;Dominik Schwarz;Nico Riese;Christian Waldschmidt","doi":"10.1109/OJAP.2025.3537681","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3537681","url":null,"abstract":"In order to ensure high-resolution angle estimation results, antenna apertures of radar sensors become large relative to the wavelength. To prevent high sidelobe levels, the number of antennas is constantly increased, generally through the employment of multiple-input multiple-output operation. As systems become larger relative to the wavelength, influences of near-field effects in calibration measurements become more critical. To achieve precise calibrations despite near-field effects, calibration algorithms must be developed further. This paper proposes the deployment of sub-apertures to avoid near-field effects and to reduce the calibration effort, which is in this work related to the number of measuring points in the calibration measurement. An algorithm to create beneficial sub-apertures from a large array based on clustering is described. This allows the far-field distance to be reduced, as well as the effort required for state-of-the-art calibration methods, which depends on the aperture size. The trade-off between the benefits and error propagations as well as other limitations by the deployment of an increasing number of sub-apertures is demonstrated by simulations and measurements. Exemplary measurements show that even for large arrays in compact measuring chambers, far-field like conditions can be created. Finally, it is exemplarily demonstrated that the measurement effort is decreased by nearly 93 percent compared to a conventional calibration approach.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"548-559"},"PeriodicalIF":3.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10869335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IEEE ANTENNAS AND PROPAGATION SOCIETY 天线与传播学会

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-29 DOI: 10.1109/OJAP.2025.3526037

引用次数: 0

IEEE Open Journal of Antennas and Propagation Instructions for authors 面向作者的IEEE天线和传播指南开放期刊

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-29 DOI: 10.1109/OJAP.2025.3526041

引用次数: 0

IEEE Open Journal of Antennas and Propagation List of Reviewers, Volume 5 IEEE天线与传播公开期刊，第5卷

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-29 DOI: 10.1109/OJAP.2025.3527823

引用次数: 0

Editorial Status Update of OJAP OJAP编辑状态更新

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-29 DOI: 10.1109/OJAP.2025.3529305

Zhongxiang Shen

引用次数: 0

Point Cloud-Based Diffraction Path Extraction for Dynamic Human Body Shadowing Channel at 300 GHz 基于点云的300 GHz动态人体阴影通道衍射路径提取

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-27 DOI: 10.1109/OJAP.2025.3534860

Chechia Kang;Xin Du;Jun-Ichi Takada

引用次数: 0

Improved Deep Learning-Based Microwave Inversion With Experimental Training Data 基于实验训练数据的改进深度学习微波反演

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-23 DOI: 10.1109/OJAP.2025.3533373

Seth Cathers;Ben Martin;Noah Stieler;Ian Jeffrey;Colin Gilmore

{"title":"Improved Deep Learning-Based Microwave Inversion With Experimental Training Data","authors":"Seth Cathers;Ben Martin;Noah Stieler;Ian Jeffrey;Colin Gilmore","doi":"10.1109/OJAP.2025.3533373","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3533373","url":null,"abstract":"Deep learning-based inversion methods show great promise. The most common way to develop deep learning inversion techniques is to use synthetic (i.e., computationally-generated) data for training and initial testing. Later, the method can be used to image calibrated experimental data. However, it may be better to use experimental data in the training (not just testing) of these networks. In this paper, we (1) present a publicly available large-scale experimental dataset with 1638 measurements of 5 targets in a near-field imaging system that can be used for testing such deep learning inversion methods. A calibration MATLAB script is provided to assist users in processing and calibrating the dataset. (2) Using this dataset, we show that training a data-to-image deep learning-based inversion algorithm on either experimental data alone, or a mixture of experimental and synthetic data, leads to improved experimental imaging results for this data. The deep learning-based approaches are also compared against the gradient descent-based Multiplicative-Regularized Contrast Source Inversion Method.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"522-534"},"PeriodicalIF":3.5,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10851335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0