IEEE Transactions on Antennas and Propagation最新文献_第10页

Dual-Band Air-Like Transparent Slab by Full Polarization Compensation 通过全极化补偿实现双频类空气透明平板

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-26 DOI: 10.1109/TAP.2024.3464859

Zhengjie Huang;Yaqing Huang;Jie Wang;Liang Peng;Xiaojun Hu;Jianhua Ren;Huilong Yu;Dexin Ye

{"title":"Dual-Band Air-Like Transparent Slab by Full Polarization Compensation","authors":"Zhengjie Huang;Yaqing Huang;Jie Wang;Liang Peng;Xiaojun Hu;Jianhua Ren;Huilong Yu;Dexin Ye","doi":"10.1109/TAP.2024.3464859","DOIUrl":"https://doi.org/10.1109/TAP.2024.3464859","url":null,"abstract":"3-D air-like metamaterials (ALMs) appear omnidirectionally invisible in free space, which enables the possibility of material existence without involving any scattering to arbitrary incident electromagnetic (EM) waves. Due to their peculiar property, ALMs are quite interesting in microwave and optical engineering. However, the existing ALMs used to work with some predefined conditions, e.g., either incident polarization or operation bandwidth are limited, which prevents their implementation in wide practical applications. In this article, we present the design and measurement of a slab-type ALM, which is polarization-free and works in a couple of radar bands. This ALM is made by utilizing a full polarization compensation in 3-D, i.e., a multilayered structure with triangular constituents. The designed ALM possesses constitutive parameters identical to air in both X and Ku bands, adopting double Lorentz resonances. In the full-wave simulations, the ALM shows air-like scatteringless at around 8 and 13.5 GHz. In the experimental measurements, the ALM is nearly scatteringless in the same bands, with incident angles varying from 0° to 60° for both the vertical and horizontal polarizations. In-depth analysis shows that zero phase delay is introduced to the propagating waves, with the ALM being present. To the best of our knowledge, it is the first attempt to simultaneously break the polarization and bandwidth limitations of ALMs. The designed ALM would be a good candidate for facilitating superior antenna radomes, EM windows, as well as through-wall detections and communications.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8762-8771"},"PeriodicalIF":4.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540427","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 Low-Profile Metal-Only Folded Transmitarray Antenna Based on Asymmetric Transmission Chiral Metasurface

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-26 DOI: 10.1109/TAP.2024.3464864

Haoyu Lei;Yongtao Jia;Yi Chen Zhong;Zhongxun Liu;Gang Shi;Ying Liu

{"title":"A Low-Profile Metal-Only Folded Transmitarray Antenna Based on Asymmetric Transmission Chiral Metasurface","authors":"Haoyu Lei;Yongtao Jia;Yi Chen Zhong;Zhongxun Liu;Gang Shi;Ying Liu","doi":"10.1109/TAP.2024.3464864","DOIUrl":"https://doi.org/10.1109/TAP.2024.3464864","url":null,"abstract":"This communication presents a low-profile and low-cost metal-only folded transmitarray antenna (FTA) based on chiral metasurface, which reduces the profile by simultaneously folding the propagation path of the waves and simplifying the structure of transmitarray. Unlike traditional elements of transmitarrays, the proposed element consists of only two metal layers without any vertical metal structures between the layers, which achieves high transmission efficiency and 360° phase shift capability. Furthermore, a metal-only reflective plate with polarization conversion characteristics is introduced to reduce the profile of the antenna. Due to the polarization regulation ability of the element, the propagation path of incident waves is folded twice to reduce the FTA’s profile to 1/3 of traditional transmitarray antennas (TAs). Consequently, the heights of the array and the whole antenna are only \u0000<inline-formula> <tex-math>$0.14lambda _{0}$ </tex-math></inline-formula>\u0000 and \u0000<inline-formula> <tex-math>$6.88lambda _{0}$ </tex-math></inline-formula>\u0000 (including the feed source), respectively. A prototype operating at 11.45–13.25 GHz is fabricated and measured. The measured maximum gain of the antenna is 27 dBi, with a total efficiency of 35.3%. These results indicate that the proposed antenna significantly reduces the profile, cost, and processing complexity while ensuring total efficiency and bandwidth. The proposed metal-only FTA has significant applications in some scenarios requiring low profile, low cost, and high-power capacity.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9480-9485"},"PeriodicalIF":4.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859001","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

Circularly Polarized Phased Array Antenna With 2-D Wide-Angle Scanning Using Heterogeneous Beam Element Technology 利用异质波束元件技术实现二维广角扫描的圆极化相控阵天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-25 DOI: 10.1109/TAP.2024.3463798

Yinglu Wan;Shaowei Liao;Xue Ren;Liangying Li;Jia Wei;Wenquan Che;Quan Xue

{"title":"Circularly Polarized Phased Array Antenna With 2-D Wide-Angle Scanning Using Heterogeneous Beam Element Technology","authors":"Yinglu Wan;Shaowei Liao;Xue Ren;Liangying Li;Jia Wei;Wenquan Che;Quan Xue","doi":"10.1109/TAP.2024.3463798","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463798","url":null,"abstract":"Circularly polarized (CP) phased array antennas (PAAs) often face challenges in achieving wide element beams and axial ratio (AR) patterns simultaneously, thereby constraining their scanning ranges. To address this issue, this article introduces heterogeneous beam element (HBE) technology to the CP PAA design, proposing an offset segmented dielectric lens (OSDLs) beam tilting technology for implementing HBEs. By positioning the OSDL offset within the near-field region above one side of the element, the near-field region is partitioned into multiple segments with varying phase differences, achieving element beam tilting. The study provides a comprehensive analysis of the CP HBE PAA design, encompassing the CP element design with a wide spatial AR bandwidth and high isolation, as well as the principle and design guidelines of the OSDL beam tilting technology. Experimental results demonstrate a significant extension of the scanning range compared to the \u0000<inline-formula> <tex-math>$4 times 4$ </tex-math></inline-formula>\u0000-element CP standard PAA, with improvements ranging from 56° to 75° in the orthogonal plane and from 58° to 80° in the diagonal plane across the 17–20-GHz band while maintaining AR values below 3 dB. The effectiveness and robustness of the OSDL beam tilting technology underscore its potential as a universal HBE implementation approach.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8527-8539"},"PeriodicalIF":4.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540388","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

Optimum Beamforming and Grating-Lobe Mitigation for Intelligent Reflecting Surfaces 智能反射面的最佳波束成形和光栅光叶消减

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-25 DOI: 10.1109/TAP.2024.3463805

Sai Sanjay Narayanan;Uday K. Khankhoje;Radha Krishna Ganti

{"title":"Optimum Beamforming and Grating-Lobe Mitigation for Intelligent Reflecting Surfaces","authors":"Sai Sanjay Narayanan;Uday K. Khankhoje;Radha Krishna Ganti","doi":"10.1109/TAP.2024.3463805","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463805","url":null,"abstract":"Ensuring adequate wireless coverage in upcoming communication technologies such as 6G is expected to be challenging. This is because user demands of higher data rate require an increase in carrier frequencies, which in turn reduce the diffraction effects (and hence coverage) in complex multipath environments. Intelligent reflecting surfaces (IRSs) have been proposed as a way of restoring coverage by adaptively reflecting incoming electromagnetic waves in desired directions. This is accomplished by judiciously adding extra phases at different points on the surface. In practice, these extra phases are only available in discrete quantities due to hardware constraints. Computing these extra phases is computationally challenging when they can only be picked from a discrete distribution, and existing approaches for solving this problem were either heuristic or based on evolutionary algorithms. We solve this problem by proposing fast algorithms with provably optimal solutions. Our algorithms have linear complexity, and are presented with rigorous proofs for their optimality. We show that the proposed algorithms exhibit better performance. We analyze situations when unwanted grating-lobes arise in the radiation pattern, and discuss mitigation strategies, such as the use of triangular lattices and prephasing techniques, to eliminate them. We also demonstrate how our algorithms can leverage these techniques to deliver optimum beamforming solutions.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8540-8553"},"PeriodicalIF":4.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540421","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

Ultrawideband Flexible and Intensity-Tunable Metamaterial Absorber Based on Lossy Stepped Impedance Resonator 基于有损阶梯阻抗谐振器的超宽带灵活且强度可调的超材料吸收器

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-25 DOI: 10.1109/TAP.2024.3463954

Huaikang Xia;Lianwen Deng;Shengxiang Huang;Zhong-Xun Liu;Lei-Lei Qiu;Lei Zhu

{"title":"Ultrawideband Flexible and Intensity-Tunable Metamaterial Absorber Based on Lossy Stepped Impedance Resonator","authors":"Huaikang Xia;Lianwen Deng;Shengxiang Huang;Zhong-Xun Liu;Lei-Lei Qiu;Lei Zhu","doi":"10.1109/TAP.2024.3463954","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463954","url":null,"abstract":"In this article, an ultrawideband metamaterial absorber integrating flexibility and tunable intensity characteristics based on a lossy stepped impedance resonator (SIR) is proposed. Compared with the uniform impedance resonator (UIR) loop, the SIR loop can perform a lower fundamental resonant frequency while raising its first-order resonant frequency by adjusting characteristic impedances of its different sections, thus facilitating a wider absorption bandwidth. The voltage-controlled PIN diode is then properly loaded for the lossy characteristics of the SIR, thereby simultaneously enabling ultrawideband and tunable absorption intensity. Detailed analysis of a quarter-wavelength lossy SIR is conducted to reveal the resonant mode characteristics. Moreover, the equivalent circuit model (ECM) of the lossy-SIR-based absorber is developed to explain the operating principle and facilitate our discussion on the parametric effects. Finally, the proposed absorber is fabricated by the flexible printed circuit process and measured to verify the design methodology. The measured effective absorption bandwidth is 4.3–17.8 GHz (122.1%) for transverse electric (TE) polarization, and 5.2–17.6 GHz (108.7%) for transverse magnetic (TM) polarization. The proposed absorber has the unique advantages of ultrawideband absorption, wide tunable absorption intensity, and quasi-single-layer flexible structure, simultaneously, which is of great significance for application in object conformality and dynamic radar cross section (RCS) reduction.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8554-8563"},"PeriodicalIF":4.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540386","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

Multifunctional Polarization Converters Based on Linear-to-Circular Polarization Decomposition Reflective Surfaces 基于线性到圆形极化分解反射面的多功能极化转换器

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-25 DOI: 10.1109/TAP.2024.3463972

Tao Zhang;Haoran Wang;Chongmei Peng;Zhaohui Chen;Guo-Min Yang;Xiaoyi Wang

{"title":"Multifunctional Polarization Converters Based on Linear-to-Circular Polarization Decomposition Reflective Surfaces","authors":"Tao Zhang;Haoran Wang;Chongmei Peng;Zhaohui Chen;Guo-Min Yang;Xiaoyi Wang","doi":"10.1109/TAP.2024.3463972","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463972","url":null,"abstract":"This article proposes a novel design strategy to realize multifunctional reflective surface polarization converters based on the concept of linear-to-circular polarization decomposition. By decomposing the linearly polarized incident wave into a pair of orthogonal circularly polarized waves, namely, a right-handed circularly polarized (RHCP) wave and a left-handed circularly polarized (LHCP) wave, and controlling the phase states of the two circularly polarized components independently, various polarization conversion functions may be achieved. A reflective surface unit cell consisting of a square patch and a 90° hybrid coupler is proposed to facilitate the linear-to-circular polarization decomposition, allowing to adjust the phase states of the two circularly polarized components by adding different phase shifters at the end of the hybrid coupler. Three different functions including linear-to-dual-polarization conversion, simultaneous linear polarization rotation and beam steering, and radar cross section (RCS) reduction are realized based on the proposed reflective surface unit cell. The proposed design strategy is theoretically analyzed and demonstrated by three reflective surfaces corresponding to the three functions with both full-wave simulation and experiment.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8476-8487"},"PeriodicalIF":4.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540369","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 Wideband High-Gain Multilinear Polarization-Reconfigurable Antenna Integrated With Nonuniform Partially Reflective Surface 集成了非均匀部分反射面的宽带高增益多线性极化可重构天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-24 DOI: 10.1109/TAP.2024.3463191

Zekui Zhang;Yanhui Liu;Shu-Lin Chen;Dingzhao Chen;Yong-Ling Ban

{"title":"A Wideband High-Gain Multilinear Polarization-Reconfigurable Antenna Integrated With Nonuniform Partially Reflective Surface","authors":"Zekui Zhang;Yanhui Liu;Shu-Lin Chen;Dingzhao Chen;Yong-Ling Ban","doi":"10.1109/TAP.2024.3463191","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463191","url":null,"abstract":"In this communication, we develop a wideband and high-gain multilinear polarization-reconfigurable antenna integrated with nonuniform partially reflective surface (PRS). It leverages a compact L-probe feed source with 25.71° interval reconfigurable linear polarizations (LPs). A polarization-independent nonuniform PRS with both reflection magnitude and phase control is introduced to significantly enhance the gain of the feed source. Furthermore, a systematic analysis on antenna gain relative to the PRS size is conducted, and the obtained gain can vary from around 15 to 20 dBi by carefully designing the PRS. Besides, a partial metallic cavity is presented to further improve the peak gain without enlarging the antenna. An example of seven-LP reconfigurable antenna was designed, simulated, and fabricated. The prototype achieves an overlapped −10-dB impedance bandwidth from 9.28 to 11.32 GHz (19.8%) and a maximum gain of 15.08 dBi. The 3-dB gain bandwidth is 15.7% (from 9.4 to 11 GHz). These measured characteristics validate the antenna’s good performance in delivering wide bandwidth and high gains across multiple LPs.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8870-8875"},"PeriodicalIF":4.6,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540368","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

Five-Beam Fully Metallic Nolen Matrix-Based Array Antenna for 5G Applications at 26 GHz 基于全金属诺伦矩阵的五波束阵列天线，适用于 26 千兆赫的 5G 应用

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-24 DOI: 10.1109/TAP.2024.3463881

M. A. Fuentes-Pascual;Miguel Ferrando-Rocher;J. I. Herranz-Herruzo;Mariano Baquero-Escudero

引用次数: 0

TD-EFIE Method-of-Moments Solution Using the Numerical Inversion of the Laplace Transform With Time-Stepping Re-Initialization 利用时间步进再初始化的拉普拉斯变换数值反演求解 TD-EFIE 时刻法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-24 DOI: 10.1109/TAP.2024.3463168

Glenn Iwasa;Emad Gad;Derek A. McNamara

引用次数: 0

Compact Multibeam Antenna Array Facilitated by Miniaturized Slow Wave Substrate Integrated Waveguide Butler Matrix

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-24 DOI: 10.1109/TAP.2024.3463203

Jing-Ya Deng;Yin Zhang;Wei Lin

{"title":"Compact Multibeam Antenna Array Facilitated by Miniaturized Slow Wave Substrate Integrated Waveguide Butler Matrix","authors":"Jing-Ya Deng;Yin Zhang;Wei Lin","doi":"10.1109/TAP.2024.3463203","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463203","url":null,"abstract":"This communication presents a compact multibeam antenna array facilitated by a \u0000<inline-formula> <tex-math>$4times 4$ </tex-math></inline-formula>\u0000 Butler matrix with substantially miniaturized dimensions based on a slow-wave substrate integrated waveguide (SW-SIW). It is well known that the conventional Butler matrix is bulky as the beamformer occupies most area of the multibeam array. In this work, the miniaturization of the Butler matrix is realized by loading slow wave (SW) structures in the form of loaded patches and non-inclusive via-holes into substrate integrated waveguide (SIW). In this manner, the effective permittivity and permeability of the SIW are increased. Consequently, both the guided wavelength and the cut-off frequency of the SIW are largely reduced. This SW-SIW technology enables the designs of miniaturized couplers, crossovers, and phase shifters with substantially reduced longitudinal and lateral dimensions. With these miniaturized components, a Butler matrix with excellent performance is developed, which is 75.5% smaller compared with the conventional SIW-based Butler matrix. The miniaturized \u0000<inline-formula> <tex-math>$4times 4$ </tex-math></inline-formula>\u0000 Butler matrix is then employed to design a compact four-beam slot antenna array. The measured results agree reasonably well with the simulations, demonstrating the feasibility of the miniaturized SW-SIW Butler matrix in designing a compact multibeam antenna array.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9564-9569"},"PeriodicalIF":4.6,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859284","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