IEEE Transactions on Antennas and Propagation最新文献_第4页

Coupling-Informed Data-Driven Scheme for Joint Angle and Frequency Estimation in Uniform Linear Array With Mutual Coupling Present

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-30 DOI: 10.1109/TAP.2024.3485251

Yanming Zhang;Wenchao Xu;A-Long Jin;Min Li;Peifeng Ma;Lijun Jiang;Steven Gao

{"title":"Coupling-Informed Data-Driven Scheme for Joint Angle and Frequency Estimation in Uniform Linear Array With Mutual Coupling Present","authors":"Yanming Zhang;Wenchao Xu;A-Long Jin;Min Li;Peifeng Ma;Lijun Jiang;Steven Gao","doi":"10.1109/TAP.2024.3485251","DOIUrl":"https://doi.org/10.1109/TAP.2024.3485251","url":null,"abstract":"This article proposes a novel coupling-informed data-driven algorithm tailored for the concurrent estimation of frequency and angle within a uniform linear array (ULA), while addressing the complicating influence of mutual coupling. Leveraging the hybrid dynamic mode decomposition (DMD) methodology, termed as averaged DMD, we incorporate moving average techniques to achieve effective denoising. The averaged DMD further decomposes the received signal into eigenvalues and corresponding eigenvectors. The frequency information is derived from the eigenvalues and the corresponding eigenvectors represent the steering vectors of sources. Subsequently, mutual coupling is informed into the calibration of the steering vector for each source. Specifically, the calibration of corresponding eigenvectors leverages the inverse of the mutual coupling matrix, i.e., Toeplitz matrix, acquired through Schur decomposition. Then, the calibrated steering vectors facilitate the estimation of angles. The decomposition results of our proposed method reveal a significant one-to-one correspondence between eigenvectors and eigenvalues, enabling automatic pairing of estimated frequencies and angles. Several numerical examples demonstrate the effectiveness and robust anti-noise properties of the proposed method, especially in scenarios where mutual coupling has a significant impact. Hence, our work contributes to the advancement of signal processing techniques in ULA applications, offering a promising avenue for enhanced performance in practical communication and radar systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9117-9128"},"PeriodicalIF":4.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10738292","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Circuit Modeling of Near-Field Coupled Undersea Antennas Using Impedance Double Expansion Method

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-30 DOI: 10.1109/TAP.2024.3485793

Nozomi Haga;Jerdvisanop Chakarothai;Keisuke Konno

{"title":"Circuit Modeling of Near-Field Coupled Undersea Antennas Using Impedance Double Expansion Method","authors":"Nozomi Haga;Jerdvisanop Chakarothai;Keisuke Konno","doi":"10.1109/TAP.2024.3485793","DOIUrl":"https://doi.org/10.1109/TAP.2024.3485793","url":null,"abstract":"This study addresses circuit modeling of near-field coupled antennas that are separately enclosed in lossless dielectrics and immersed in seawater, which are intended for applications such as undersea wireless power transfer (WPT) systems. To accomplish this, a circuit modeling technique called the impedance expansion method (IEM) is extended to consider lossy dielectrics with a loss tangent greater than unity. Unlike the conventional IEM, the extended method first expands the coefficient matrices derived by the method of moments (MoM) into the Laurent series with respect to propagation constants and then further expands them with respect to the complex angular frequency. Based on this feature, the extended method is called the impedance double expansion method (IDEM). By applying the IDEM to the undersea dipole and loop antennas with pure water covers, their circuit models are obtained. Comparison with the full-wave MoM and finite-difference time-domain (FDTD) calculations shows that these circuit models reasonably approximate not only the reflection and transmission coefficients between the antennas with matching circuits (MCs) but also the radiation loss.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9378-9391"},"PeriodicalIF":4.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10739956","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","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 Transactions on Antennas and Propagation Publication Information 电气和电子工程师学会《天线与传播》杂志出版信息

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-29 DOI: 10.1109/TAP.2024.3475055

引用次数: 0

Mechanically Steerable Simultaneous Multibeam Transmitarray Design by Analytical Multifocal Approach

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-29 DOI: 10.1109/TAP.2024.3485504

Francesco Alessio Dicandia;Simone Genovesi

引用次数: 0

Institutional Listings 机构列表

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-29 DOI: 10.1109/TAP.2024.3475059

引用次数: 0

IEEE Transactions on Antennas and Propagation Information for Authors 电气和电子工程师学会《天线与传播》（IEEE Transactions on Antennas and Propagation）为作者提供的信息

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-29 DOI: 10.1109/TAP.2024.3475057

引用次数: 0

A HIE S-FDTD Method to Account for Geometrical and Material Uncertainties in Lossy Thin Panels 考虑薄损面板中几何和材料不确定性的 HIE S-FDTD 方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-28 DOI: 10.1109/TAP.2024.3484673

Miguel Ruiz-Cabello Núñez;Alberto Prados Pérez;Luis Díaz Angulo;Alberto Gascón Bravo;Guadalupe G. Gutierrez;Enrique Pascual Gil;Miriam González Atienza

引用次数: 0

A Full Design Perspective of Port Decoupling for MIMO Antennas: Preservation of Radiation Pattern

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-28 DOI: 10.1109/TAP.2024.3484680

Guang-Yao Liu;Nan Yang;Kwok Wa Leung;Kwai Man Luk

{"title":"A Full Design Perspective of Port Decoupling for MIMO Antennas: Preservation of Radiation Pattern","authors":"Guang-Yao Liu;Nan Yang;Kwok Wa Leung;Kwai Man Luk","doi":"10.1109/TAP.2024.3484680","DOIUrl":"https://doi.org/10.1109/TAP.2024.3484680","url":null,"abstract":"Whereas most studies of decoupling methods in antenna designs are limited to port isolation, this article additionally investigates the radiation-pattern-decoupling (RPD) method to preserve the radiation pattern in a port-decoupling design. The RPD method introduces shorting vias to obtain a new current component for canceling the coupled current, leaving the original active current on the coupled antenna element. As a result, each element effectively has its own active current only, minimizing the coupling effects on the antenna port and radiation pattern. For demonstration, this RPD method is applied to an multiple-input multiple-output (MIMO) design using broadside microstrip antennas (MAs). Both \u0000<inline-formula> <tex-math>$1times 2$ </tex-math></inline-formula>\u0000 and \u0000<inline-formula> <tex-math>$4times 4$ </tex-math></inline-formula>\u0000 MIMO arrays are considered, with reasonable agreement between the measured and simulated results. Both of the arrays have an overlapping impedance and isolation bandwidth of more than 5%, with the portion isolation higher than 16.5 dB.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9164-9176"},"PeriodicalIF":4.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858565","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

Enabling Real-Time Near-Field Focusing Imaging With Space-Time-Coding Metasurface Antenna 利用时空编码元表面天线实现实时近场聚焦成像

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-28 DOI: 10.1109/TAP.2024.3484665

Shao-Xin Huang;Geng-Bo Wu;Jun-Yan Dai;Ka Fai Chan;Qiang Cheng;Tie-Jun Cui;Chi Hou Chan

{"title":"Enabling Real-Time Near-Field Focusing Imaging With Space-Time-Coding Metasurface Antenna","authors":"Shao-Xin Huang;Geng-Bo Wu;Jun-Yan Dai;Ka Fai Chan;Qiang Cheng;Tie-Jun Cui;Chi Hou Chan","doi":"10.1109/TAP.2024.3484665","DOIUrl":"https://doi.org/10.1109/TAP.2024.3484665","url":null,"abstract":"This article proposes a microwave near-field focus steerable imaging system operating at 22.5 GHz, built upon a space-time-coding metasurface antenna (STCMA), featuring real-time dynamic sensing capabilities. A novel synthetic method is developed to design the required amplitude envelopes, thereby achieving near-field focusing (NFF) for STCMA. By utilizing a field-programmable gate array (FPGA) for encoding the operation of meta-atoms, the designed STCMA is capable of rapidly manipulating subwavelength NFF beams along the axis parallel to its long side, achieving an optimal focal length of 60 mm. Scattering fields from the illuminated object are collected by an open-ended waveguide for scene mapping. A calibration procedure, in conjunction with a compensation model, is implemented to counteract measurement errors and inconsistencies, thereby enhancing the imaging quality. MATLAB scripts are developed to refresh the data stream through interactions with FPGA and vector network analyzer (VNA), enabling 1-D real-time detection and characterization of various concealed metal and dielectric objects with a large field of view (FoV) of 90°. The proposed imager is expanded to achieve 2-D imaging within seconds by incorporating mechanical translation. The proposed study advances the STCMA technology from the level of component design to that of system application and lays the groundwork for future research into metasurface-based super-resolution real-time imaging at higher frequencies.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9082-9094"},"PeriodicalIF":4.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858731","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 Weak-Coupling and Compact Magnetic Pendulum Array Antenna for SLF Communication 用于 SLF 通信的弱耦合紧凑型磁摆阵列天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-28 DOI: 10.1109/TAP.2024.3484653

Zhaoqiang Chu;Wei Dan;Shizhan Jiang;Chenyuan Yu;Kewen Dong;Yuzhu Ren;Zelin Du;Jianming Sun;Da Yi;Shuxiang Dong

{"title":"A Weak-Coupling and Compact Magnetic Pendulum Array Antenna for SLF Communication","authors":"Zhaoqiang Chu;Wei Dan;Shizhan Jiang;Chenyuan Yu;Kewen Dong;Yuzhu Ren;Zelin Du;Jianming Sun;Da Yi;Shuxiang Dong","doi":"10.1109/TAP.2024.3484653","DOIUrl":"https://doi.org/10.1109/TAP.2024.3484653","url":null,"abstract":"It is always a challenge to design a portable and efficient super low frequency (SLF) transmitter. Here, we propose a compact and weakly coupled magnetic pendulum array (MPA) for efficient transmission in the SLF band. Analytic expressions for the fields generated by a swinging magnet are first established. Based on theoretical calculation and experimental results, the average power and the maximum swinging angle for an MPA unit are found to be 0.22 W and 43.84°, respectively. Then, three kinds of 1-D array structures are constructed, and both the static and the dynamic magnetic coupling between the antenna units are compared via finite element method (FEM). On this basis, the resonance frequency, the power consumption, and the radiation capability of three kinds of 1-D arrays are experimentally studied. The measured flux density at a 2 m distance in free space reaches 137 nTpk (1100 fTpk @100 m) under the driving frequency of 65 Hz for our optimized 1-D array. It has a compact dimension of \u0000<inline-formula> <tex-math>$19times 6times 2.2$ </tex-math></inline-formula>\u0000 cm3 and the figure of merit (FOM_1) is calculated to be 5560 A2m/W. Finally, both a binary amplitude-shift keying (BASK) and a binary phase shift keying (BPSK) signal are transmitted through the optimized MPA. Reliable communication with a distance of 22 m and a data rate of 4 bit/s is experimentally demonstrated. Its FOM_2 for assessing the communication performance is as high as 169.2 b/s/(m\u0000<inline-formula> <tex-math>$^{2}cdot $ </tex-math></inline-formula>\u0000Hz), which is almost eight times the value of other MPAs.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9072-9081"},"PeriodicalIF":4.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858729","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