IEEE Open Journal of Antennas and Propagation最新文献_第10页

Wideband Low RCS Circularly Polarized Antenna Array Based on Hybrid Absorptive Frequency Selective Structure 基于混合吸收选频结构的宽带低RCS圆极化天线阵列

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2026-02-25 DOI: 10.1109/OJAP.2026.3667752

Bingyan Zhou;Di Gao;Binchao Zhang;Tian Lou;Cheng Jin

{"title":"Wideband Low RCS Circularly Polarized Antenna Array Based on Hybrid Absorptive Frequency Selective Structure","authors":"Bingyan Zhou;Di Gao;Binchao Zhang;Tian Lou;Cheng Jin","doi":"10.1109/OJAP.2026.3667752","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3667752","url":null,"abstract":"In this paper, we propose a wideband low radar cross section (RCS) circularly polarized antenna array based on a hybrid absorptive frequency selective structure. To achieve wideband RCS reduction, a two-dimensional absorber and a three-dimensional absorptive frequency selective transmission (AFST) structure are successively integrated above the antenna. Furthermore, the transmission window of the AFST aligns with the operating band of the antenna to ensure its radiation performance. Specifically, the absorber consists of two perpendicular bent metal strips with central loading resistors, AFST is realized by adding a split-ring resonator in the center of the metal strip with resistors, and the circularly polarized antenna includes cutting radiation and parasitic patches. A prototype of <inline-formula> <tex-math>$8times 8$ </tex-math></inline-formula> antenna array is designed, fabricated, and measured. Experimental results show that the antenna achieves a wide operating band of <inline-formula> <tex-math>$13.1sim 14.8$ </tex-math></inline-formula> GHz within a broad RCS reduction band of <inline-formula> <tex-math>$2sim 20$ </tex-math></inline-formula> GHz. The in-band realized gain is large than 19.5dBi, and the maximum gain is 21.4 dBi.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 3","pages":"900-907"},"PeriodicalIF":3.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11411773","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148518458","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

Near-Field Focusing With Bi-Directionally Fed Frequency-Scanned Antennas for Proximity Sensing 基于双向馈电频率扫描天线的近场聚焦近距离传感

IF 3.6

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2025-07-23 DOI: 10.1109/OJAP.2025.3592129

Guillermo Inglés Muñoz;Álvaro Durán Alonso;José Antonio López-Pastor;Alejandro Gil-Martínez;Astrid Algaba-Brazález;José Luis Gómez-Tornero

引用次数: 0

Antenna Characterization Techniques for Accurate Electromagnetic Imaging 精确电磁成像的天线表征技术

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2026-03-26 DOI: 10.1109/OJAP.2026.3678191

Yuri Álvarez López;Alicia Flórez Berdasco;Elena de Cos Gómez;Jaime Laviada Martínez;Fernando Las-Heras Andrés

引用次数: 0

IEEE ANTENNAS AND PROPAGATION SOCIETY 天线与传播学会

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2026-06-11 DOI: 10.1109/OJAP.2026.3690278

引用次数: 0

Optimal Current Distributions for Antenna Arrays in Radiative Near-Field Communication Links 辐射近场通信链路中天线阵列的最佳电流分布

IF 3.6

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2025-06-09 DOI: 10.1109/OJAP.2025.3573016

N. Beschoor Plug;J. Tan;S. Bosma;G. Carluccio;A. Neto;N. Llombart

{"title":"Optimal Current Distributions for Antenna Arrays in Radiative Near-Field Communication Links","authors":"N. Beschoor Plug;J. Tan;S. Bosma;G. Carluccio;A. Neto;N. Llombart","doi":"10.1109/OJAP.2025.3573016","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3573016","url":null,"abstract":"We present a design methodology for high-capacity line-of-sight communication arrays in the radiative near-field of each other. We optimize the equivalent aperture current distribution of highly directive antennas in order to obtain noise-limited independent data streams with maximal average signal to noise interference ratio over a range of link distances. The current distributions, equal for the transmit and receive arrays, are found to be defined by the Prolate Spheroidal Wave Function in amplitude and a quadratic phase focusing term. We show that these optimized arrays reach the same coupling levels as when using beamforming techniques without the need for phase control per element. We also demonstrate that this optimization allows the use of fixed beamforming weights rather than highly variable weights over link distance. Finally, we study a 2x2 array at 270 GHz with <inline-formula> <tex-math>$6lambda _{0}$ </tex-math></inline-formula> diameter elements where the desired aperture current distribution is synthesized using a leaky-wave lens antenna fed by a double-iris slot and a focusing hyperbolic lens. Appropriate modeling of the aperture current distributions results in good agreement between transfer matrix calculations and FW simulations.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 3","pages":"1062-1077"},"PeriodicalIF":3.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11029155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148214911","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

Guest Editorial: Introduction to the Special Section on Near-Field Antenna Systems for Communications and Sensing 嘉宾评论：通信和传感用近场天线系统专题介绍

IF 3.6

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2026-06-11 DOI: 10.1109/OJAP.2026.3693038

Manuel Arrebola;Sérgio Matos;Álvaro F. Vaquero;Mauro Ettorre

引用次数: 0

Quad-Directional Vivaldi Antenna With Sub-Band Gain Enhancement Based on SSPP 基于SSPP的四向维瓦尔第子带增益增强天线

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2026-03-24 DOI: 10.1109/OJAP.2026.3677095

Shuangshuang Zhu;Xinlong Bi;Yang Shao;Xiaoyuan Wang;Yi Song

引用次数: 0

Design, Modeling, and Characterization of a Cascaded-Lens Antenna for 220–330 GHz With 51.1 dBi Gain 增益为51.1 dBi的220-330 GHz级联透镜天线的设计、建模和特性研究

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-06-01 Epub Date: 2026-02-09 DOI: 10.1109/OJAP.2026.3662746

Joel Dittmer;Akanksha Bhutani;Felix Beuthan;Jonas Krimmer;Thomas Zwick;Christian Koos;Sebastian Randel

{"title":"Design, Modeling, and Characterization of a Cascaded-Lens Antenna for 220–330 GHz With 51.1 dBi Gain","authors":"Joel Dittmer;Akanksha Bhutani;Felix Beuthan;Jonas Krimmer;Thomas Zwick;Christian Koos;Sebastian Randel","doi":"10.1109/OJAP.2026.3662746","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3662746","url":null,"abstract":"This paper presents a novel sub-THz high-gain cascaded-lens antenna design approach that employs Gaussian beam propagation combined with low-cost dielectric materials and standard manufacturing techniques. The proposed lens antenna, solely designed based on a Gaussian beam model, achieves a maximum measured peak gain of 51.1 dBi across a broad sub-THz frequency range from 220 to 330 GHz, demonstrated for the first time, to the best of the authors’ knowledge. The antenna comprises a WR3.4 diagonal horn as the primary radiator and a cascaded pair of dielectric lenses, comprising a double-concave lens followed by a double-convex lens. This cascaded configuration effectively controls beam divergence, increases the effective aperture, and enables higher gain with a more compact horn-to-lens spacing than conventional single-lens designs. An analytical model based on Gaussian-beam propagation is developed to predict the antenna’s radiation characteristics, thereby reducing the need for time- and memory-intensive full-wave electromagnetic simulations in e.g., CST Microwave Studio Suite. The model’s accuracy is validated through comparison with both simulations and measurements for a single-lens configuration at 240 GHz, 280 GHz, and 320 GHz. The predicted results show excellent agreement with the measured radiation patterns and realized gain. For the cascaded-lens antenna, the theoretical and experimental peak-gain values agree closely across the entire operating band from 220 to 330 GHz. The proposed cascaded-lens antenna features a compact form factor, a high gain-to-aperture ratio of <inline-formula> <tex-math>$mathrm {13.01~mm ^{2}}$ </tex-math></inline-formula>, a low sidelobe level of −40 dBc, and an aperture efficiency of 66%. These results highlight the cascaded-lens approach as an efficient and scalable solution for next-generation sub-THz high-gain antenna systems.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 3","pages":"794-807"},"PeriodicalIF":3.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11386965","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148514333","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

Wireless Channel Parameter Estimation for Millimeter-Wave Hybrid Beamforming Systems 毫米波混合波束形成系统的无线信道参数估计

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-04-01 Epub Date: 2025-12-22 DOI: 10.1109/OJAP.2025.3646920

Nigus Shimuye;Claude Oestges;François Quitin

{"title":"Wireless Channel Parameter Estimation for Millimeter-Wave Hybrid Beamforming Systems","authors":"Nigus Shimuye;Claude Oestges;François Quitin","doi":"10.1109/OJAP.2025.3646920","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3646920","url":null,"abstract":"This paper proposes a sub-antenna array beamsteering-domain channel estimation framework for millimeter-wave (mmWave) systems with hybrid beamforming. Unlike conventional array-domain methods that require access to per-antenna baseband, the proposed approach leverages joint transmitter (Tx) and receiver (Rx) beamsteering observations to enable high-resolution, digital-beamforming-like parameter estimation under practical hardware constraints. A generalized signal model is developed that incorporates measured beam patterns, including sidelobe and phase effects, ensuring a practical representation of hybrid transceivers. Building on this model, we adapt the classical SAGE and MUSIC algorithms to operate in the beamsteering domain, allowing accurate estimation of multipath angle and delay parameters without relying on discretized angular grids. The proposed methods are evaluated through extensive Monte Carlo simulations across different SNR levels, array configurations, and beamsteering resolutions, and are further validated on a 28 GHz hybrid beamforming testbed. Results demonstrate that the beamsteering-based SAGE achieves superior resolution in dense multipath environments, while beamsteering-based MUSIC provides robustness under reduced beamsteering diversity. These findings establish the proposed framework as a practical and effective solution for accurate mmWave channel parameter estimation with hybrid beamforming architectures.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 2","pages":"357-368"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11309742","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148511259","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

Radar Bistatic Technique for Accurate Characterization of Small Antenna Radiation Patterns 精确表征小天线辐射方向图的雷达双基地技术

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-04-01 Epub Date: 2025-12-25 DOI: 10.1109/OJAP.2025.3648477

Habiba Hafdallah Ouslimani;Patricia Grassin-Lezé;Kevin Claver

{"title":"Radar Bistatic Technique for Accurate Characterization of Small Antenna Radiation Patterns","authors":"Habiba Hafdallah Ouslimani;Patricia Grassin-Lezé;Kevin Claver","doi":"10.1109/OJAP.2025.3648477","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3648477","url":null,"abstract":"An original method based on the radar bistatic technique (RBTech) is proposed to characterize key antenna parameters, with emphasis on radiation patterns. The bistatic configuration comprises two standard transmit/receive antennas, and the antenna under test. While the transmitting Tx antenna remains fixed, in front of the target (at normal incidence), the receiving Rx antenna rotates around with a bistatic angle. Rx measures the diffracted wave (i.e., backscattered field) as a function of the frequency, the wave polarization and the bistatic angle, for different terminal impedance; namely short-circuit, open circuit, and matched load. First, the antenna mode corresponding to the reradiated wave is recovered in the time domain by removing the structural mode. The structural mode is obtained by measuring the backscattered wave when the antenna is well matched, i.e., with a near-zero reflection coefficient. Second, time-gating and Fast Fourier Transform (FFT) processing are applied to extract the frequency spectrum of the recovered reradiated waves from the time-domain antenna-mode signal. By compiling these results as a function of the bistatic angle, the radiation pattern can be reconstructed in any cut-plane for both co- and cross-polarizations. Experimental measurements conducted in an anechoic chamber, based on an accurate wideband calibration procedure, along with full-wave simulations using the radar bistatic technique, were performed on a triband omnidirectional antenna and patch arrays. Very good agreement was observed between the reconstructed patterns and those obtained via conventional simulation and measurement methods. The developed radar bistatic technique demonstrates accuracy, potential for non-invasive operation, and remote applicability.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 2","pages":"442-461"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11314922","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148509938","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