IEEE Transactions on Antennas and Propagation最新文献_第6页

Modeling of Multiferroic Antennas in the Akhiezer Regime: Effects of Acoustic Resonator Excitation and Topology on Radiation

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-22 DOI: 10.1109/TAP.2024.3481651

Louis-Charles Ippet-Letembet;Rui-Fu Xu;Robin Jeanty;Zhi Yao;Robert N. Candler;Shih-Yuan Chen

{"title":"Modeling of Multiferroic Antennas in the Akhiezer Regime: Effects of Acoustic Resonator Excitation and Topology on Radiation","authors":"Louis-Charles Ippet-Letembet;Rui-Fu Xu;Robin Jeanty;Zhi Yao;Robert N. Candler;Shih-Yuan Chen","doi":"10.1109/TAP.2024.3481651","DOIUrl":"https://doi.org/10.1109/TAP.2024.3481651","url":null,"abstract":"A 2-D closed-form model of multiferroic antennas in the GHz range is proposed. The model predicts the electrical and mode shape responses of film bulk acoustic resonators (FBARs) and solidly mounted resonators (SMRs) and provides a closed-form solution of the radiated electromagnetic (EM) field, enabling optimization of antenna parameters to maximize radiated power. Furthermore, the model is exploited to analyze the radiation performance of multiferroic antennas according to acoustic resonator topologies (FBAR and SMR) and excitation modes (thickness-extensional (TE) and thickness-shear (TS) modes). The analysis reveals that SMR-based antennas radiate less than FBAR-based ones due to substrate energy loss. In addition, antennas excited by TE modes can generate significantly more power than those excited by TS modes. Finally, we investigate the frequency-dependent mechanical and electrical limitations of radiation at GHz frequencies by comparing the efficiency-bandwidth products of different multiferroic antennas with Chu’s limit in the Akhiezer regime. The results suggest that phonon-phonon coupling of Akhiezer damping will be the primary limiting factor of antenna radiation at GHz frequencies, rather than Chu’s limit.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9058-9071"},"PeriodicalIF":4.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859358","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

Independent Amplitude/Phase-Manipulation Metasurface Based on BLRFC Scheme and Its Application to Wideband Metalens Antenna With Sidelobe Suppression 基于 BLRFC 方案的独立振幅/相位操纵元面及其在具有边音抑制功能的宽带金属天线中的应用

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-22 DOI: 10.1109/TAP.2024.3481638

Xiao-Han Yang;Zhi-Yuan Zong;Wen Wu;Da-Gang Fang

{"title":"Independent Amplitude/Phase-Manipulation Metasurface Based on BLRFC Scheme and Its Application to Wideband Metalens Antenna With Sidelobe Suppression","authors":"Xiao-Han Yang;Zhi-Yuan Zong;Wen Wu;Da-Gang Fang","doi":"10.1109/TAP.2024.3481638","DOIUrl":"https://doi.org/10.1109/TAP.2024.3481638","url":null,"abstract":"In this work, based on the scheme using the antenna array back-loaded radio frequency circuit (BLRFC) to realize circuit-level manipulation, a novel design of amplitude/phase-manipulation metasurface (A/PMMS) is proposed. The BLRFC has been used to manipulate transmissive electromagnetic (EM) waves by loading control circuits between the grounds of two antenna arrays. Based on the proposed A/PMMS, the amplitude and phase of EM waves can be manipulated independently. The phase manipulation is realized by tuning the length of the transmission line. Also, the amplitude manipulation is realized by tuning the characteristic impedance of the transmission line to change the match between the circuit and the antennas. Furthermore, a wideband metalens antenna with sidelobe suppression is designed, fabricated, and measured based on the proposed scheme. The sidelobe suppression is achieved by tuning the amplitude distribution of the metalens aperture to realize the Taylor distribution. Measurements show that the proposed metalens antenna achieves the 3-dB gain-bandwidth of 35.8% (8–11.5 GHz). At 9 GHz, the first and the second sidelobe levels (SLLs) in the E- and H-planes are suppressed lower than -30 dB, and the realized gain is 23.6 dBi. The measured performance verifies the flexibility and the superiority of the novel scheme. In addition, the proposed scheme can be easily extended to the dual-polarized design. By using dual-polarized antennas, and loading circuits on the channel of each polarization, a dual-polarized A/PMMS is designed. The proposed dual-polarized A/PMMS can independently manipulate dual-polarized EM waves. To the authors’ best knowledge, this type of A/PMMS has not been reported.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9221-9228"},"PeriodicalIF":4.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859096","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

Efficient Incremental Variable-Fidelity Machine-Learning-Assisted Hybrid Optimization and Its Application to Multiobjective Antenna Design

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-22 DOI: 10.1109/TAP.2024.3481663

Weiqi Chen;Qi Wu;Biying Han;Chen Yu;Haiming Wang;Wei Hong

{"title":"Efficient Incremental Variable-Fidelity Machine-Learning-Assisted Hybrid Optimization and Its Application to Multiobjective Antenna Design","authors":"Weiqi Chen;Qi Wu;Biying Han;Chen Yu;Haiming Wang;Wei Hong","doi":"10.1109/TAP.2024.3481663","DOIUrl":"https://doi.org/10.1109/TAP.2024.3481663","url":null,"abstract":"Online-model-based machine-learning-assisted optimization (MLAO) methods are widely used to reduce the computational burden of complex electromagnetic (EM) optimization problems. Multidesign parameter and multiobjective EM problems are common in engineering practice. As the problem design dimensionality increases, the training time of the surrogate model in the optimization process becomes nonnegligible. The performance of optimization algorithms degrades for high design dimensions and multiple objectives, and many full-wave simulation calculations are required before convergence. In this work, an incremental variable-fidelity machine-learning-assisted hybrid optimization (IVF-MLAHO) algorithm is proposed to solve a multiobjective EM problem with medium-scale (i.e., 20–50) design variables. First, reliable variable-fidelity models are used for initial sampling to reduce the computational cost of sampling. Then, in the training process, incremental learning or retraining is adaptively selected to update the surrogate models, which reduces the training burden. Furthermore, a hybrid global multiobjective and local single-objective optimization algorithm is adopted to markedly improve the convergence performance. Finally, the superiority of the IVF-MLAHO algorithm is verified on a substrate-integrated waveguide (SIW) broadband millimeter-wave slot antenna array, in which the training time is greatly reduced.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9347-9354"},"PeriodicalIF":4.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859273","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

On the Asymptotic Evaluation of the Radiative Near-Field in Resonant Leaky Wave Antennas Using a Nonuniform Phase Center: Application to Small Lenses

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-22 DOI: 10.1109/TAP.2024.3481650

Alexandros Bechrakis Triantafyllos;Nuria Llombart

引用次数: 0

Effective Permittivity and Permeability of Triply Periodic Minimal Surface Structures

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-22 DOI: 10.1109/TAP.2024.3481639

Wei-Jia He;Xiao-Wei Yuan;Jia-Tong Jing;Bi-Yi Wu;Ming-Lin Yang;Xin-Qing Sheng

引用次数: 0

A Low-Profile High-Efficiency Transmitarray Antenna Reflecting Effective Phase Discontinuity With TE/TM Superimpose Analysis

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-22 DOI: 10.1109/TAP.2024.3481661

Uichan Park;Jinhyun Kim;Taeyeong Yoon;Haeseung Lee;Kyungho Yoo;Jungsuek Oh

{"title":"A Low-Profile High-Efficiency Transmitarray Antenna Reflecting Effective Phase Discontinuity With TE/TM Superimpose Analysis","authors":"Uichan Park;Jinhyun Kim;Taeyeong Yoon;Haeseung Lee;Kyungho Yoo;Jungsuek Oh","doi":"10.1109/TAP.2024.3481661","DOIUrl":"https://doi.org/10.1109/TAP.2024.3481661","url":null,"abstract":"In this study, we propose a high-efficiency, low-profile transmitarray (TA) antenna system and present an efficient design procedure by co-designing a multiport subarray antenna (MPSA) to perform as a feed source and the TA simultaneously. The proposed TA antenna supports dual slant polarization (SP). Furthermore, the concept of effective phase discontinuity (EPD) based on a mutual coupling coefficient is introduced for efficient TA design operation at short focal lengths to verify the effectiveness of the advanced unit cell (UC) arrangement with gain enhancement. A TE/TM superimposing method was applied to derive the UC response over the entire area of the aperture of the TA based on the response analysis of a rotated UC satisfying 90° rotational symmetry to TE/TM oblique incidence. The designed TA antenna exhibits a low profile of F/D ratio = 0.33 at a center frequency of 3.5 GHz and a high aperture efficiency (AE) of 37%. The measured results are also in good agreement with the simulation results, indicating that the proposed TA antenna system provides an effective design methodology for SP array antennas and low-profile high-gain systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9208-9220"},"PeriodicalIF":4.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859095","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

Millimeter-Wave Wideband Wide-Angle Scanning Linear Phased Array Antenna Using Pin-Loaded Slot Elements

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-21 DOI: 10.1109/TAP.2024.3480273

Liangqin Luo;Yuanjun Shen;Honghuan Zhu;Lei Chen;Tianling Zhang

{"title":"Millimeter-Wave Wideband Wide-Angle Scanning Linear Phased Array Antenna Using Pin-Loaded Slot Elements","authors":"Liangqin Luo;Yuanjun Shen;Honghuan Zhu;Lei Chen;Tianling Zhang","doi":"10.1109/TAP.2024.3480273","DOIUrl":"https://doi.org/10.1109/TAP.2024.3480273","url":null,"abstract":"A novel wideband, wide-angle scanning linear phased array with low gain fluctuation is introduced for millimeter-wave (mmW) applications. The design utilizes a full-metal long slot as its radiation structure to simultaneously achieve wideband and low-loss performance. To ensure low gain fluctuation across a wideband, wide-angle scanning range, an innovative structure incorporating two pins and grooves is implemented outside the ridges. This design facilitates a promising gain enhancement mechanism for wide-angle scanning, which is explored through the analysis of the field distribution of the element with periodic boundaries. The ridge gap waveguide (RGW) technology is employed to feed the elements, offering a wide single-mode bandwidth, reduced loss, and compact physical width. To validate the design, a \u0000<inline-formula> <tex-math>$1times 16$ </tex-math></inline-formula>\u0000 array prototype with two distinct feeding networks was constructed to achieve radiation both at the broadside and 60°. The measured VSWR for both radiation states remains under two across almost the entire band, confirming the array’s wideband, wide-angle scanning capabilities. The measured and simulated radiation results show a good agreement from 20 to 30 GHz, showcasing a peak gain of 19.2 dBi and maintaining a gain fluctuation under 2.5 dB within a ±60° scanning range.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9552-9557"},"PeriodicalIF":4.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859283","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

Corrections to “Reradiation and Scattering From a Reconfigurable Intelligent Surface: A General Macroscopic Model”

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-21 DOI: 10.1109/TAP.2024.3480316

Vittorio Degli-Esposti;Enrico M. Vitucci;Marco Di Renzo;Sergei A. Tretyakov

引用次数: 0

Synthesis of Sparse Linear Arrays via Low-Rank Hankel Matrix Completion 通过低方根 Hankel 矩阵补全合成稀疏线性阵列

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-18 DOI: 10.1109/TAP.2024.3479715

Xuejing Zhang;Tianyuan Gu

{"title":"Synthesis of Sparse Linear Arrays via Low-Rank Hankel Matrix Completion","authors":"Xuejing Zhang;Tianyuan Gu","doi":"10.1109/TAP.2024.3479715","DOIUrl":"https://doi.org/10.1109/TAP.2024.3479715","url":null,"abstract":"In this communication, we propose a method to synthesize sparse linear arrays using low-rank Hankle matrix completion. With the given metrics (e.g., peak sidelobe level (PSL), mainlobe width) of the desired beampattern, we synthesize a sparse linear array directly by designing a low-rank Hankel matrix under appropriate constraints. A low-rank matrix completion problem is formulated with Hankle structure constraint, and an effective solver is presented using log-det heuristic. Different from existing work that requires reference array and reference beampattern, our method synthesizes sparse linear arrays directly according to the desired beampattern metrics. In this way, our method is more flexible and avoids the selection of reference array/beampattern. Moreover, due to maintaining the Hankel structure, the proposed method can achieve more accurate estimation on element positions. In addition, the proposed method can be easily extended and applied to various sparse array synthesis scenarios. Representative simulations are conducted to validate the effectiveness and superiority of the proposed method. It is shown that the proposed method synthesizes desired beampatterns with fewer antenna elements, compared with existing work.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9522-9527"},"PeriodicalIF":4.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859100","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

Comparative Study of VPE-Driven CNN Models for Radio Wave Propagation Modeling in Tunnels

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-17 DOI: 10.1109/TAP.2024.3478818

Siyi Huang;Shiqi Wang;Xinyue Zhang;Xingqi Zhang

{"title":"Comparative Study of VPE-Driven CNN Models for Radio Wave Propagation Modeling in Tunnels","authors":"Siyi Huang;Shiqi Wang;Xinyue Zhang;Xingqi Zhang","doi":"10.1109/TAP.2024.3478818","DOIUrl":"https://doi.org/10.1109/TAP.2024.3478818","url":null,"abstract":"Radio wave propagation modeling in railway environments is of fundamental importance in designing reliable train communication systems. In recent years, many machine learning (ML) techniques have been applied to accelerate the modeling process. In particular, convolutional neural networks (CNNs) have presented a superior performance in extracting features and reconstructing field distribution. However, the relevant literature is still missing a comprehensive study on CNN architecture design and the performance of different CNN models. In this article, we compare the performance of nine different CNNs, including recently developed advanced CNN techniques, for radio wave propagation modeling in tunnels. Each model is assessed in three different size variants to examine the effect of model complexity on performance. The CNN model is driven by a vector parabolic equation (VPE) channel simulator based on super-resolution. In addition, we investigate the performance of hybridizing various CNN architectures and present a CNN design roadmap for radio wave propagation modeling in tunnels. Besides, the proposed models are validated against measurement campaigns in two realistic tunnels.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9421-9436"},"PeriodicalIF":4.6,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859097","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