IEEE Antennas and Wireless Propagation Letters最新文献_第10页

An Efficient Ray-Tracing Framework for Urban Scenarios Powered by Heterogeneous Graph Neural Networks 基于异构图神经网络的城市场景高效光线追踪框架

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-04 DOI: 10.1109/LAWP.2025.3576376

Shiyuan Liu;Yujie Feng;Songjiang Yang;Bo Ma;Chuanhuang Li

引用次数: 0

A Novel High-Gain Hexagonal Cavity-Backed MIMO SIW Antenna With 3-D Homogeneous Lens Loading at Ka Band 一种新型的高增益六角形腔背SIW天线，在Ka波段具有三维均匀透镜加载

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-04 DOI: 10.1109/LAWP.2025.3576566

Nidhi Tewari;Aakash Bansal;Shweta Srivastava;Will Whittow

{"title":"A Novel High-Gain Hexagonal Cavity-Backed MIMO SIW Antenna With 3-D Homogeneous Lens Loading at Ka Band","authors":"Nidhi Tewari;Aakash Bansal;Shweta Srivastava;Will Whittow","doi":"10.1109/LAWP.2025.3576566","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3576566","url":null,"abstract":"In this letter, a novel symmetrical hexagonal-shaped cavity-backed substrate integrated waveguide (SIW) antenna with 3-D lens is presented. The novelty of the proposed design is achieving a gain of approximately 20 dBi from single unit cell lens SIW antenna. The proposed 4 × 4 multiple-input–multiple-output (MIMO) SIW lens achieves a high isolation above 30 dB for the operating band with high gain. The proposed MIMO SIW lens antenna achieves a −10 dB bandwidth of 1.1 GHz (27.89 GHz to 29 GHz). It is achieved by a pair of parallel slots on top of the SIW cavity. The proposed design offers a simulated gain of 6.5 dBi, which was then enhanced to 18.5 dBi at 28.4 GHz with the integration of a 3-D-printed dielectric homogeneous lens. The cavity-backed lens antenna is used to realize a 4 × 4 MIMO antenna structure. The 4 × 4 MIMO SIW lens antenna has isolation above 30 dB (between the four antenna elements) throughout the frequency band of operation. The measured results are in good agreement with Ansys HFSS simulations. The stable antenna performance makes it suitable for applications in satellite, radar imaging, and point-to-multipoint wireless communications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"2889-2893"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

IEEE Antennas and Wireless Propagation Letters Publication Information IEEE天线与无线传播通讯出版信息

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-03 DOI: 10.1109/LAWP.2025.3571261

引用次数: 0

On-Chip Dielectric Resonator Antenna on Silicon Carbide Substrate for Extreme Environments 极端环境下碳化硅衬底片上介电谐振器天线

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-03 DOI: 10.1109/LAWP.2025.3576302

Sree Adinarayana Dasari;Seung Yoon Lee;Nima Ghalichechian

{"title":"On-Chip Dielectric Resonator Antenna on Silicon Carbide Substrate for Extreme Environments","authors":"Sree Adinarayana Dasari;Seung Yoon Lee;Nima Ghalichechian","doi":"10.1109/LAWP.2025.3576302","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3576302","url":null,"abstract":"We present the design, fabrication, and high-temperature measurement of a highly efficient (91.5%) on-chip dielectric resonator antenna (DRA) on silicon carbide (SiC). The simulations were validated through measurements of return loss and peak gain up to 400 °C, along with radiation pattern measurements up to 300 °C, marking this study as the first high-temperature radiation pattern measurement of a ground-signal-ground (GSG) probed SiC-based on-chip antenna. We report a sapphire resonator coupled to a slot on a 4H-SiC substrate, fed using a grounded coplanar waveguide, and impedance matched by a series stub inductor. The DRA operates in the fundamental TE111 mode for broadside radiation at 28.8 GHz to 30.6 GHz. We implement edge corrugations, significantly enhancing efficiency by suppressing surface waves and beam shaping to achieve a higher gain. The proposed antenna was fabricated in-house and measured using a modified probe station and a robot arm. The simulated gain and peak total efficiency of 8.52 dBi and 91.5%, respectively, agree with the measured values of 8.47 dBi and 90.5%. The antenna is demonstrated to have a stable reflection coefficient and radiation pattern up to 300 °C with less than 0.5 dBi reduction in peak gain.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"2879-2883"},"PeriodicalIF":4.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dual-Band High-Gain Metasurface Antenna Based on Symmetry Breaking Effect for Radar Imaging 基于对称破缺效应的双频高增益超表面天线用于雷达成像

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-03 DOI: 10.1109/LAWP.2025.3576136

Wufu Zhu;Jiabin Yu;Hongmei Mi;Lihua Xiao;Dongping Zhang;Binggang Xiao

引用次数: 0

A Frequency-Reconfigurable Single-Port Handset Antenna for GEO and LEO Satellite Communications 用于GEO和LEO卫星通信的频率可重构单端口手持天线

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-02 DOI: 10.1109/LAWP.2025.3575092

Hui Zhang;Haofei Shi;Chao Gu;Steven Gao;Kai Zhang;Liang Xu

{"title":"A Frequency-Reconfigurable Single-Port Handset Antenna for GEO and LEO Satellite Communications","authors":"Hui Zhang;Haofei Shi;Chao Gu;Steven Gao;Kai Zhang;Liang Xu","doi":"10.1109/LAWP.2025.3575092","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3575092","url":null,"abstract":"This letter presents a single-port handheld terminal antenna for geostationary orbit (GEO) satellite communication at S band (1.98 GHz to 2.01 GHz, 2.17 GHz to 2.2 GHz) and low-earth orbit (LEO) satellite communication at L band (1.518 GHz to 1.525 GHz, 1.668 GHz to 1.675 GHz) based on reconfigurable technique. The quadrifilar helix antenna (QHA) is designed with two sets of helices of different pitches integrated into a single structure. The lower QHA features a smaller pitch, while the upper QHA has a larger pitch. These helices are stacked and wound around the same dielectric support cylinder, forming a compact and efficient antenna configuration. The lower and upper helices are interconnected using p-i-n diodes, enabling the reconfigurable operation of the proposed QHA. By controlling the on/off states of the radiating arms through the p-i-n diodes, the antenna can switch between GEO and LEO satellite communication modes seamlessly. The innovation lies in sharing the feed network for both the dc control signal of the p-i-n diodes and the RF signal, which effectively eliminates the need for additional dc bias lines, thereby minimizing the impact of the dc control circuit on the antenna’s radiation performance. Additionally, a miniaturized broadband quad-phase power dividing network based on a multilayer structure of wide-edge coupled striplines is designed and implemented at the base of the QHA, which enables circular polarization at both bands. The measured results show that good impedance matching (<italic>S11<−15dB) and axial ratio (AR < 0.5 dB) are obtained. Additionally, the gain is greater than −3 dBi within ±80° beam range at L band and 1 dBi within ±45° beam range at S band, respectively. The proposed QHA is a good candidate for dual-mode satellite communications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"2839-2843"},"PeriodicalIF":4.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Broadband Dual Circularly Polarized Transmitarray With Independent Beam Control 一种具有独立波束控制的宽带双圆极化发射阵列

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-02 DOI: 10.1109/LAWP.2025.3574951

Kunlong Jiao;Haibing Ding;Junwen Tang;Jing Wang;Lu Tian;Weiwei Lv;Hehe Yu;Qianzhong Xue

引用次数: 0

Transmitter Location-Independent Path Loss Exponent Estimation via RSS Measurements With Shadowing Effect 具有阴影效应的RSS测量的发射机位置无关路径损耗指数估计

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-02 DOI: 10.1109/LAWP.2025.3576094

Shoubin Zhang;Hongjun Wang;Zhexian Shen;Chao Chang;Xinhao Li

{"title":"Transmitter Location-Independent Path Loss Exponent Estimation via RSS Measurements With Shadowing Effect","authors":"Shoubin Zhang;Hongjun Wang;Zhexian Shen;Chao Chang;Xinhao Li","doi":"10.1109/LAWP.2025.3576094","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3576094","url":null,"abstract":"Path loss exponent (PLE) is one of the key parameters that characterizes the channel attenuation properties. Existing estimation strategies for PLE mostly consider scenarios of free-space transmission and rely on information exchange between transmitters and receivers. These approaches have limitations, such as high costs, low security, and insufficient consideration of complex environments. This letter, based on the geometric path loss distribution model in wireless random networks established in (Hu 2024), implements a joint analysis and estimation of PLE and shadowing variance, taking into account shadowing effects and without transmitter’s location. First, the objective function is formulated using maximum likelihood estimation. Due to the complexity of the objective function’s mixed second-order characteristics, the first-order and second-order properties of the objective function with respect to each variable are analyzed sequentially. Finally, through extensive simulation experiments and comparisons with Cramér–Rao lower bound, the consistency and effectiveness of the theoretical analysis and experimental results are verified.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"2864-2868"},"PeriodicalIF":4.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Dynamic Phased Array for Steerable Secure V2X Wireless Communications 动态相控阵技术在V2X无线通信中的应用

IF 4.8 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-04-28 DOI: 10.1109/LAWP.2025.3565202

Jacob R. Randall;Michael Dittman;Mauro Ettorre;Jeffrey A. Nanzer

{"title":"A Dynamic Phased Array for Steerable Secure V2X Wireless Communications","authors":"Jacob R. Randall;Michael Dittman;Mauro Ettorre;Jeffrey A. Nanzer","doi":"10.1109/LAWP.2025.3565202","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3565202","url":null,"abstract":"In this letter, we present a compact and efficient dynamic antenna array system for vehicle-to-everything (V2X) communications applications that is capable of steering a spatially narrow information beam to provide increased wireless security at the physical layer. The technique is demonstrated in both indoor and outdoor environments with a 2.5 GHz <inline-formula><tex-math>$1times2$</tex-math></inline-formula> patch antenna array with <inline-formula><tex-math>$0.5lambda$</tex-math></inline-formula> spacing with an amplitude imbalanced feed using a Wilkinson divider and an in-series double-pole-double-throw (DPDT) RF switch. Switching the outputs of the divider rapidly between the two antenna inputs induces an electrical motion of the phase center along the axis of the array, creating directional modulation that increases the bit error ratio (BER) towards undesired directions, but maintains zero BER at the desired direction. Traditional phase weighting can be used to steer the uncorrupted information to an arbitrary direction. Wireless communication security is demonstrated using 16-QAM modulation transmitted in 48-kbit bursts. The data stream is a pseudo-random bit sequence (PRBS) transmitted at a rate of 4 Mb/s. The DPDT RF switch was driven three orders of magnitude slower at a rate of 1 kHz. The communication system operated at a minimum SNR of 25 dB so that any bit errors were due to the phase and amplitude dynamics, and not due to low SNR. The dynamic array obtained a low BER of <inline-formula><tex-math>$10^{-3}$</tex-math></inline-formula> within an information beam of <inline-formula><tex-math>$25^circ$</tex-math></inline-formula> at broadside, and <inline-formula><tex-math>$sim45^circ$</tex-math></inline-formula> when the array is steered to <inline-formula><tex-math>$pm 30^circ$</tex-math></inline-formula>, while a traditional static array yielded low BER at all angles (no wireless security.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"2711-2715"},"PeriodicalIF":4.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

IEEE Antennas and Wireless Propagation Letters Publication Information IEEE天线与无线传播通讯出版信息

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-04-08 DOI: 10.1109/LAWP.2025.3553801

引用次数: 0