IEEE Open Journal of Antennas and Propagation最新文献_第2页

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

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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

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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

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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

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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}

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A Design of Orthomode Transducer Loaded With Polarization Grid 加载偏振栅的正交模换能器设计

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-22 DOI: 10.1109/OJAP.2025.3532855

Yuying Li;Zhaoran Chen;Kaiyan Huang;Xiayuan Yao

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A Design Method to Increase the Bandwidth of Reflectarray Antennas 一种提高反射天线带宽的设计方法

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-16 DOI: 10.1109/OJAP.2025.3530251

Christos Exadaktylos;Anastasios G. Koutinos;Constantinos L. Zekios;Stavros V. Georgakopoulos

{"title":"A Design Method to Increase the Bandwidth of Reflectarray Antennas","authors":"Christos Exadaktylos;Anastasios G. Koutinos;Constantinos L. Zekios;Stavros V. Georgakopoulos","doi":"10.1109/OJAP.2025.3530251","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3530251","url":null,"abstract":"This work introduces a novel design methodology to redesign traditional reflectarray antennas (RAs) with bandwidths in the order of 15% and double their bandwidth without increasing their design complexity. A wideband RA unit cell (UC) is designed utilizing multiple connection points between the radiating and phase shifting structure. Notably, to properly set the desired phase shift at each UC of the RA aperture across the entire frequency band, true-time-delay (TTD) lines are connected to each element. To validate the performance of our proposed approach a traditional microstrip patch-based RA is used as an example. By applying our proposed method to this RA, we develop a design that achieves a fractional 1.5 dB gain bandwidth of 31% (8.6 GHz to 11.8 GHz) in the X-band, which is more than two times larger than the 14% fractional bandwidth of the traditional RA design. Our RA is prototyped to validate its performance. The measurements show excellent agreement with simulations thereby validating our proposed methodology.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"497-512"},"PeriodicalIF":3.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10843377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698170","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

6G RIS in Indoor Environments: Assessment of Exposure Variability in Human Users and Non-Users 室内环境中的 6G RIS：评估人类使用者和非使用者的暴露变异性

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-16 DOI: 10.1109/OJAP.2025.3529980

Silvia Gallucci;Martina Benini;Serena Fiocchi;Gabriella Tognola;Marta Parazzini

{"title":"6G RIS in Indoor Environments: Assessment of Exposure Variability in Human Users and Non-Users","authors":"Silvia Gallucci;Martina Benini;Serena Fiocchi;Gabriella Tognola;Marta Parazzini","doi":"10.1109/OJAP.2025.3529980","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3529980","url":null,"abstract":"The aim of the present work is to assess the exposure of human users and non-users in indoor scenarios due to novel technology that will be integrated in 6G network in order to overcome the obstacles in NLOS area: Reconfigurable Intelligent Surface (RIS), here tuned in FR1-band. The exposure assessment was conducted in two simplified indoor scenarios, single room and office, where the transmission angle of the RIS were varied mimicking the RIS following the user, and the Specific Absorption Rate (whole-body and brain SAR) were calculated. Five human models from Virtual Population (ViP) were considered differing between each other for anatomical characteristics. <inline-formula> <tex-math>${mathrm { SAR}}_{mathrm { wb}}$ </tex-math></inline-formula> and <inline-formula> <tex-math>${mathrm { SAR}}_{mathrm { brain}}$ </tex-math></inline-formula> results, studied in terms of peak values, cumulative distribution functions (CDFs) and spatial maps, showed higher <inline-formula> <tex-math>${mathrm { SAR}}_{mathrm { wb}}$ </tex-math></inline-formula> values in adults compared to children, while <inline-formula> <tex-math>${mathrm { SAR}}_{mathrm { brain}}$ </tex-math></inline-formula> peaks were more pronounced in child models. The study also revealed that there are few cases in which the exposure of non-user could be higher than the user. Moreover, the CDFs demonstrated that, for all the considered models, the probability that very low <inline-formula> <tex-math>${mathrm { SAR}}_{mathrm { brain}}$ </tex-math></inline-formula> and <inline-formula> <tex-math>${mathrm { SAR}}_{mathrm { wb}}$ </tex-math></inline-formula> levels occur is noticeably high. However, in general all the results are well below the ICNIRP Guidelines limits.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"487-496"},"PeriodicalIF":3.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10843402","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698271","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

Beam Shaping by Phase-Only Waveform Encoding for Transmitting Array Antennas in Radar Applications 雷达应用中发射阵列天线的纯相位波形编码波束整形

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-14 DOI: 10.1109/OJAP.2025.3529505

Lior Maman;Shlomo Zach;Amir Boag

{"title":"Beam Shaping by Phase-Only Waveform Encoding for Transmitting Array Antennas in Radar Applications","authors":"Lior Maman;Shlomo Zach;Amir Boag","doi":"10.1109/OJAP.2025.3529505","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3529505","url":null,"abstract":"Two beam broadening methods for active electronically scanned array (AESA) antennas with uniform amplitude excitation are proposed and compared: phase tapering optimization (PTO) and a novel time-varying phase tapering (TPT). The PTO is a simple and efficient approach assuming continuous polynomial phase distribution and requiring optimization of only few parameters. The TPT is valid mainly for radar applications, taking advantage of the fact that radars typically transmit pulse trains for coherent integration. By incorporating waveform encoding and varying the array elements’ phases from pulse to pulse, the TPT achieves effective amplitude tapering, enabling precise beam shaping and the realization of any amplitude aperture illumination using phase-only control, thus providing a method of beam shaping, occasionally with a simple analytic form. The TPT also makes it possible to produce beam shaping with very low side lobe levels in comparison to the PTO. As a preliminary step, the dimensionality of the radiation pattern characterization for all scan directions is reduced from five to only two variables. This is crucial for efficient optimization of the radiation pattern which needs to be evaluated over a judiciously specified two-dimensional domain.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"478-486"},"PeriodicalIF":3.5,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10841413","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698257","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}

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Digitally Controlled Beam-Steerable Printed Dipole Antenna 数字控制波束导向印刷偶极子天线

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-13 DOI: 10.1109/OJAP.2025.3529019

Rajesh Shukla;Sandeep Kumar Yadav;Soumava Mukherjee

{"title":"Digitally Controlled Beam-Steerable Printed Dipole Antenna","authors":"Rajesh Shukla;Sandeep Kumar Yadav;Soumava Mukherjee","doi":"10.1109/OJAP.2025.3529019","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3529019","url":null,"abstract":"A digitally controlled beam steerable printed dipole antenna operating in ISM band has been proposed using PIN diodes switching mechanism. The proposed antenna provides effective solution of beam steering by establishing adequate coverage in elevation plane using a single dipole element. The beam steering of antenna has been digitally controlled by varying the effective length of one dipole arm by switching the PIN diodes integrated on it. For effective digitally controlled beam steering, the DC biasing voltage applied for switching PIN diodes is regulated by Pulse Width Modulation (PWM) signal generated from STM32F407VG microcontroller through RC filter. Biasing elements for antenna is intentionally placed on back side of substrate through via to minimize the effect on radiation pattern. Peak gain of proposed antenna is measured as 4.57 dB with cross polarisation below −20 dB and scan loss less than 0.8 dB. The proposed antenna is capable of steering beam up to 45 degrees in elevation plane having 120 MHz operational bandwidth. In order to establish wide range of applications, proposed antenna is designed and tested for 2.45 GHz ISM band. The proposed antenna operates with minimal design complexity, high portability, reduced manufacturing cost, easily integrated architecture, lower parasitic losses and less space constraints due to single dipole structure with microcontroller switched PIN diodes integrated on antenna itself.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"460-467"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10839295","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698304","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