IEEE Transactions on Antennas and Propagation最新文献_第5页

Broadband Ground-Embedded Dielectric Resonator Antenna With Half-Space Coverage for 5G Applications

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-25 DOI: 10.1109/TAP.2024.3520305

Lei Guo;Yipei Qiao;Wenwen Yang;Kwok Wa Leung

{"title":"Broadband Ground-Embedded Dielectric Resonator Antenna With Half-Space Coverage for 5G Applications","authors":"Lei Guo;Yipei Qiao;Wenwen Yang;Kwok Wa Leung","doi":"10.1109/TAP.2024.3520305","DOIUrl":"https://doi.org/10.1109/TAP.2024.3520305","url":null,"abstract":"This communication presents a novel ground-embedded dielectric resonator (DR) antenna (DRA) which has a broad bandwidth and wide half-space coverage, based on the concept of complementary superimposition. By using the embedded ground, horizontal and vertical electric currents can be introduced. Their radiation can be combined with that of the original DRA, significantly boosting radiation at low elevation angles. This results in broad half-power beamwidths (HPBWs) of ~180° in two elevation planes. The design achieves wide half-space coverage across a wide bandwidth by exciting two adjacent modes. To validate the theory, the proposed antenna was fabricated and measured. Measured results show a broad usable impedance bandwidth of 2.35–3.55 GHz (40.68%), with HPBWs of ~180°. The maximum gains are 2.54 and 2.13 dBi at <inline-formula> <tex-math>$theta = 0^{circ }$ </tex-math></inline-formula> (boresight) and <inline-formula> <tex-math>$theta = 90^{circ }$ </tex-math></inline-formula>, respectively. Due to its embedded structure, our antenna is compact, making it promising for 5G applications that generally require both wide beamwidth and impedance bandwidth.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 2","pages":"1191-1196"},"PeriodicalIF":4.6,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361481","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

Patch-Based Matrix-Free Time-Domain Method and PML Truncation in Unstructured 3-D Meshes

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-25 DOI: 10.1109/TAP.2024.3520356

Vinicius C. Do Nascimento;Dan Jiao

{"title":"Patch-Based Matrix-Free Time-Domain Method and PML Truncation in Unstructured 3-D Meshes","authors":"Vinicius C. Do Nascimento;Dan Jiao","doi":"10.1109/TAP.2024.3520356","DOIUrl":"https://doi.org/10.1109/TAP.2024.3520356","url":null,"abstract":"In this article, we propose a new time-domain method for solving Maxwell’s equations: patch-based matrix-free time-domain (P-MFTD) method, in unstructured 3-D meshes. This method is free of matrix solutions regardless of the element shape used for discretization. Unlike its volume-based counterpart, both the curl of electric fields and that of magnetic fields are discretized on 2-D patches, whose orientation can be arbitrary. The method avoids the use of 3-D vector basis functions, thus significantly reducing the number of unknowns required to solve the same problem. Furthermore, a time-marching scheme is developed to ensure the stability of transient simulations, even in the presence of an unsymmetrical numerical system. The accuracy and stability of the proposed time-marching method are theoretically analyzed and found to be guaranteed. Additionally, we extend the formulation to include the truncation of the solution domain by a patch-based perfectly matched layer (PML) in unstructured meshes. The proposed method is validated with analytical solutions, numerical experiments, and measured data. Comparisons with the time-domain finite element (FE) methods and the volume-based MFTD method have demonstrated the superior performance of the proposed method in accuracy, efficiency, and stability in unstructured 3-D meshes.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 3","pages":"1698-1711"},"PeriodicalIF":4.6,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553071","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 Reconfigurable Intelligent Surface for Wideband Beamforming and Frequency-and-Spatial-Diverse Microwave Sensing

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-24 DOI: 10.1109/TAP.2024.3519781

Baiyang Liu;Qingfeng Zhang;Hang Wong

{"title":"Multifunctional Reconfigurable Intelligent Surface for Wideband Beamforming and Frequency-and-Spatial-Diverse Microwave Sensing","authors":"Baiyang Liu;Qingfeng Zhang;Hang Wong","doi":"10.1109/TAP.2024.3519781","DOIUrl":"https://doi.org/10.1109/TAP.2024.3519781","url":null,"abstract":"Reconfigurable intelligent surface (RIS), known for their wave manipulation capabilities, are emerging as key technologies, especially in communication and sensing. In this article, we introduce a multifunctional RIS that is noteworthy for its substantial relative impedance bandwidth coverage of 41.3%, offering both frequency and spatial diversities for wideband wide-angle beamforming and object sensing. The proposed multifunctional RIS has been fabricated and measured. Moreover, the RIS utilizes wideband wide-angle beamforming and frequency-and-spatial-diverse technology to demonstrate dual functions: enhancing broadband wireless signals using quadrature amplitude modulation (QAM) and detecting passive objects. Regarding wireless signal enhancement, the RIS boosts signals by an average of 8 dB compared with a metal plate within the wideband frequency range of 15–21 GHz. In terms of frequency-and-spatial-diverse sensing, the proposed RIS is able to sense objects against a background. By introducing joint frequency and spatial diversity, the proposed RIS can further increase capacity in both wireless communication and sensing systems. The multiple functions make the RIS and highly relevant for sixth-generation (6G) communication systems and integrated sensing and communication (ISAC) applications.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 2","pages":"1135-1148"},"PeriodicalIF":4.6,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361474","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 Surface-Integral-Equation-Based Characteristic Mode Expansion of Dielectric Body With Internal Excitations

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-24 DOI: 10.1109/TAP.2024.3519740

Chong Guo;Yong-Chang Jiao;Yi Ren

引用次数: 0

Beam-Scanning Reflectarray With Switchable Polarization Based on Liquid Crystal at Millimeter Wave

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-23 DOI: 10.1109/TAP.2024.3518696

Peyman Aghabeyki;Yang Cai;Guangsheng Deng;Gert Frølund Pedersen;Shuai Zhang

引用次数: 0

Fast Zero Migration Algorithm for Near-Field Sparse MIMO Array Grating Lobe Suppression

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-23 DOI: 10.1109/TAP.2024.3489890

Rongqiang Zhu;Jianxiong Zhou;Shiqi Chen;Haiyang Ding

{"title":"Fast Zero Migration Algorithm for Near-Field Sparse MIMO Array Grating Lobe Suppression","authors":"Rongqiang Zhu;Jianxiong Zhou;Shiqi Chen;Haiyang Ding","doi":"10.1109/TAP.2024.3489890","DOIUrl":"https://doi.org/10.1109/TAP.2024.3489890","url":null,"abstract":"Under near-field conditions, spatial undersampling leads to grating lobes in the sparse multiple-input multiple-output (MIMO) array results. A fast zero migration algorithm is developed in this communication for suppressing the grating lobes. In our method, resampling in the wavenumber domain is first achieved on the received data, and then, the fast inverse Fourier transform (FT) and compensation on the image domain is leveraged for achieving zero migration of transceiver array. By applying apodization on the zero migration result, zero spreading is equivalently achieved and thus alleviate the influence of grating lobe spreading under near-field conditions and avoid the ghosts in the imaging results. Benefit from its fast FT-based processing scheme, the method achieves a reduction in computational complexity from O(<inline-formula> <tex-math>${N} ^{4}$ </tex-math></inline-formula>) to O(<inline-formula> <tex-math>${N} ^{3}$ </tex-math></inline-formula>logN). Both simulated and measured data validate the superiority of the method in effectively suppressing grating lobes and improving the processing efficiency.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 2","pages":"1286-1291"},"PeriodicalIF":4.6,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143184469","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

2024 IEEE AP-S Piergiorgio L.E. Uslenghi Prize Paper Award 2024 IEEE AP-S Piergiorgio L.E. Uslenghi奖论文奖

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-19 DOI: 10.1109/TAP.2024.3503095

Modeste Bodehou;Gilles Monnoyer;Maxime Drouguet;Khaldoun Alkhalifeh;Luc Vandendorpe;Christophe Craeye

引用次数: 0

Circuit-Informed Neural Network for Broadening the Bandwidth of SIW-Fed Slot Antennas

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-19 DOI: 10.1109/TAP.2024.3516388

Ren Wang;Hong-Yuan Chang;Yan-He Lv;Hao Huang;Jun-Song Wang;Bing-Zhong Wang

引用次数: 0

2024 IEEE AP-S Ulrich L. Rohde Humanitarian Technical Field Project Award 2024 IEEE AP-S Ulrich L. Rohde人道主义技术领域项目奖

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-19 DOI: 10.1109/TAP.2024.3503030

引用次数: 0

2024 Distinguished Achievement Award 2024杰出成就奖

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2024-12-19 DOI: 10.1109/TAP.2024.3502972

Stuart A. Long

引用次数: 0