IEEE Antennas and Wireless Propagation Letters最新文献_第8页

Machine Learning-Assisted Microstrip Antenna Design Featuring Extraordinary Polarization Purity 具有非凡极化纯度的机器学习辅助微带天线设计

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-31 DOI: 10.1109/LAWP.2024.3524249

Sk Rafidul;Mobayode O. Akinsolu;Bo Liu;Chandrakanta Kumar;Debatosh Guha

{"title":"Machine Learning-Assisted Microstrip Antenna Design Featuring Extraordinary Polarization Purity","authors":"Sk Rafidul;Mobayode O. Akinsolu;Bo Liu;Chandrakanta Kumar;Debatosh Guha","doi":"10.1109/LAWP.2024.3524249","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3524249","url":null,"abstract":"A high degree of polarization purity for microstrip antennas has been successfully explored. This, to the best of our knowledge, is the first of its kind and claims a twofold novelty: a stepwise development of complex multiunit defected ground geometry (DGG) based on a thorough scientific analysis and use of a machine learning-assisted global antenna optimization method, particularly, the parallel surrogate model-assisted hybrid differential evolution for antenna synthesis (PSADEA) algorithm, which is often more than ten times faster than popular global optimization techniques, while obtaining superior results. They result in highly optimal solutions considering multiple performances, i.e., reduction in cross-polarization (XP) radiations simultaneously over orthogonal (H-) and diagonal (D-) planes maintaining the primary gain unaffected. The proposed DGG has been satisfactorily tested with different patches and arrays fabricated in C band. Typically, 7.5 dBi to 8.0 dBi peak gain has been ensured along with 13 dB to 18 dB improvement in XP level over entire radiation planes. A 4-element array on an identical DGG promises over 40 dB co-to-XP isolation over the entire azimuth planes.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"1008-1012"},"PeriodicalIF":3.7,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801077","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

Independent Dual-Circularly Polarized Passive RFID Tag for Incident Angle Measurement 用于入射角测量的独立双圆偏振无源RFID标签

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-31 DOI: 10.1109/LAWP.2024.3524266

Sheng Gao;Mei Yang;Hongxin Zhao;Xiaoxing Yin

{"title":"Independent Dual-Circularly Polarized Passive RFID Tag for Incident Angle Measurement","authors":"Sheng Gao;Mei Yang;Hongxin Zhao;Xiaoxing Yin","doi":"10.1109/LAWP.2024.3524266","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3524266","url":null,"abstract":"This study presents an independent dual-circularly polarized RFID tag and introduces a method for measuring the incident angle between the RFID tag and the reader. The tag, constructed with hybrid phase shift elements, possesses the capability to convert and independently control dual circular polarization. The reflection from left-handed circularly polarized (LCP) waves exhibits a higher monostatic radar cross section (RCS) than those from right-handed circularly polarized (RCP) waves within a certain angle range. The monostatic RCS difference between LCP and RCP depends on the tag incident angle, varying in magnitude as the angle changes. Therefore, the tag's incident angle can be obtained by comparing the measured difference with theoretically predicted values. A nine-element RFID tag was designed and fabricated, and its performance was validated through experiments. Experimental results confirmed significant distinguishability between the scattered LCP and RCP monostatic RCS patterns, aligning with simulated predictions. The proposed tag incident angle measurement method requires only a single RFID tag and a single reader. Additionally, the method is compatible with conventional positioning methods and can serve as an alternative method to enhance stability.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"1013-1017"},"PeriodicalIF":3.7,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800945","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 Planar Differentially Fed Circularly Polarized Filtering Antenna With Enhanced Axial-Ratio Bandwidth 具有增强轴向比带宽的平面差分馈电圆极化滤波天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-31 DOI: 10.1109/LAWP.2024.3524606

Dajiang Li;Yan-Gang Zhou;Kun-Zhi Hu;Kang-Hong Yuan;Zhiyuan Chen;Dong Yan

{"title":"A Planar Differentially Fed Circularly Polarized Filtering Antenna With Enhanced Axial-Ratio Bandwidth","authors":"Dajiang Li;Yan-Gang Zhou;Kun-Zhi Hu;Kang-Hong Yuan;Zhiyuan Chen;Dong Yan","doi":"10.1109/LAWP.2024.3524606","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3524606","url":null,"abstract":"A planar differentially fed circularly polarized filtering antenna with enhanced axial-ratio (AR) bandwidth is proposed. The proposed design consists of a square substrate integrated waveguide cavity (SSIWC), a truncated square patch with an etched U-shaped slot, and four parasitic shorted patches. The SSIWC, serving as a feeding cavity, and two metal posts are employed as perturbation elements to excite the degenerate modes in SSIWC. Initially, the energy couples from the SSIWC to the truncated square patch through a small square slot so as to obtain circular polarization with two AR minima. Then, four shorted patches are arranged around the truncated square patch to concurrently generate a third AR minimum and a radiation null, thus improving the AR bandwidth and the upper passband edge's roll-off rate. Finally, a U-shaped slot is utilized, introducing an extra radiation null to further enhance the upper stopband's suppression level and simultaneously optimizing the impedance and AR matching of the whole antenna. A fabricated prototype was measured, demonstrating an overlapped bandwidth (where |<inline-formula><tex-math>${it {S}}_text{dd11}$</tex-math></inline-formula>| ≤ −10 dB and AR ≤ 3 dB) of 4.63 GHz to 5.05 GHz (8.6%), and an average realized gain of 6.6 dBi with good filtering response.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"1028-1032"},"PeriodicalIF":3.7,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800952","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

Vertically Polarized, Pattern-Reconfigurable, Yagi–Uda Dielectric Resonator Antenna 垂直极化，模式可重构，Yagi-Uda介电谐振器天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-31 DOI: 10.1109/LAWP.2024.3524421

Yuerong Liu;Zhan Wang;Yuandan Dong

引用次数: 0

Low Sidelobe Dual-Beam Metasurface Antenna Based on Taylor Distribution and Digital Filtering Methods 基于泰勒分布和数字滤波方法的低旁瓣双波束超表面天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-30 DOI: 10.1109/LAWP.2024.3523945

Qing Liu;Xin-Wei Chen;Wu-Bin Niu;Ming-Yao Xia;Wen-Mei Zhang

引用次数: 0

SIW Cavity-Fed Millimeter-Wave Circularly Polarized Filtenna Enabled With Custom-Designed Patches SIW腔馈毫米波圆极化滤波器启用定制设计的贴片

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-30 DOI: 10.1109/LAWP.2024.3523920

Zhiyuan Chen;Zi-Hao Bian;Kun-Zhi Hu;Fan Yang;De-Yi Xiong;Dajiang Li;Min Xiang

{"title":"SIW Cavity-Fed Millimeter-Wave Circularly Polarized Filtenna Enabled With Custom-Designed Patches","authors":"Zhiyuan Chen;Zi-Hao Bian;Kun-Zhi Hu;Fan Yang;De-Yi Xiong;Dajiang Li;Min Xiang","doi":"10.1109/LAWP.2024.3523920","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3523920","url":null,"abstract":"In this letter, a millimeter-wave circularly polarized filtenna enabled with custom-designed patches is presented. The configuration of the filtenna is simple, which consists of an I-shaped substrate integrated waveguide (SIW) cavity, four square patches etched with cross slots, L-shaped stubs that are connected to the square patches, and regularly arranged shorting vias. The filtering response with controllable radiation nulls is facilitated by the I-shaped SIW cavity. The regularly-arranged shorting vias play a crucial role in the creation of an axial ratio (AR) minimum for the filtenna. Four square patches etched with cross slots contribute to the generation of the other two AR minima in the passband. Thus, a wide AR bandwidth is achieved. The gain value of the filtenna is ultimately enhanced by the introduction of L-shaped stubs, which alters the current distributions of the top patches. A prototype of the developed filtenna is fabricated and measured for validation. The measured results demonstrate an overlapped fractional bandwidth (where |<italic>Sl1| ≤ −10 dB and AR ≤ 3 dB) of 11.2% [(24.1 to 26.95) GHz] and a peak realized gain value of 10.4 dBi.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"998-1002"},"PeriodicalIF":3.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800955","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

Wideband Decoupling of Copolarized Low-Profile Metasurface Arrays With Ultrahigh-Density Arrangement of 2 × 2 Chessboard Elements 2 × 2棋盘单元高密度排列共极化低轮廓超表面阵列的宽带解耦

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-27 DOI: 10.1109/LAWP.2024.3523507

Mei Li;Wei Zhu;Ming-Chun Tang;Dong Xiong;Lei Zhu

{"title":"Wideband Decoupling of Copolarized Low-Profile Metasurface Arrays With Ultrahigh-Density Arrangement of 2 × 2 Chessboard Elements","authors":"Mei Li;Wei Zhu;Ming-Chun Tang;Dong Xiong;Lei Zhu","doi":"10.1109/LAWP.2024.3523507","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3523507","url":null,"abstract":"Wideband decoupling approaches for copolarized metasurface arrays with ultrahigh-density arrangement are developed. The metasurface element is in the 2 × 2 chessboard configuration to ensure a compact size. Without introducing any additional layers and while preserving the compact layout of the entire metasurface array, effective approaches are proposed, making use of polarization orthogonality and current cancellation for wideband decoupling in the <italic>E-plane array, as well as odd-even mode cancellation for wideband decoupling in the <italic>H-plane array. To validate the efficacy of these wideband decoupling strategies, prototypes of decoupled two-element <italic>E- and <italic>H-plane metasurface arrays, as well as a 2 × 2 metasurface array, were fabricated and measured. Experimental results demonstrate that, with a profile as low as 0.032λL, both <italic>E-plane and <italic>H-plane arrays will achieve a wide decoupling bandwidth of 15.7% while maintaining an isolation level exceeding 20 dB. Meanwhile, a wide bandwidth of 12.1% is achieved for the 2 × 2 decoupled metasurface array.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"978-982"},"PeriodicalIF":3.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800803","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

Fully Automated Inside Body WDT Transmitter Design and Optimization Through Artificial Intelligence-Based GANs and DNNs 基于人工智能gan和dnn的全自动车身WDT发射机设计与优化

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-27 DOI: 10.1109/LAWP.2024.3523379

Lida Kouhalvandi;Ladislau Matekovits

{"title":"Fully Automated Inside Body WDT Transmitter Design and Optimization Through Artificial Intelligence-Based GANs and DNNs","authors":"Lida Kouhalvandi;Ladislau Matekovits","doi":"10.1109/LAWP.2024.3523379","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3523379","url":null,"abstract":"Biomedical inside body wireless data transfer interface includes the design of power amplifiers (PAs) with implantable antenna leading to operate concurrently. Hence, active and passive devices are utilized simultaneously for which the accurate starting points for designing these high dimensional devices is critical. From another point of view, accelerating the design and optimization process is another substantial issue that must be considered effectively. In this study, we propose a methodology that includes two optimization phases that are applied sequentially. In the first phase, the PA is designed and optimized by employing a generative adversarial network (GAN) for predicting the load-pull contours on the Smith chart and using a long short-term memory (LSTM)-based deep neural network (DNN) for achieving the optimal design parameters of the biomedical amplifier. In this step, the GAN leads to predicting the optimal impedances needed to construct the initial structure of PA through a simplified real frequency technique. In the second optimization phase, the initial structure of the biomedical antenna is constructed automatically by developing a visual basic environment, then like the PA, the design parameters of the antenna are optimized through the LSTM-based DNN. Finally, another GAN is generated for predicting the radiation patterns of the antenna. In both phases, a multiobjective ant lion optimizer is employed in the output layer of DNNs for optimizing various outcome specifications. The proposed method is performed fully automatically: active and passive devices are designed and optimized with the help of GANs and DNNs in which the drawback of heavy reliance of the system performance on the designer's experience is solved in a fast way. The proposed method is validated by designing and optimizing a biomedical PA with an antenna working at the center frequency of 2.45 GHz which shows reliable outcomes.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"963-967"},"PeriodicalIF":3.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800800","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

Development of the Malyuzhinets Method for Wave Tracing Modeling at Right-Angled Areas 直角区域波迹模拟Malyuzhinets方法的发展

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-27 DOI: 10.1109/LAWP.2024.3523631

Kirill Klionovski;Sergey Bankov

引用次数: 0

Millimeter-Wave Differentially Fed Single-Layered Circularly Polarized Antenna 毫米波差分馈电单层圆极化天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-27 DOI: 10.1109/LAWP.2024.3523510

Runcong Lv;Mingxuan Liang;Shi Feng Nie;Qing-Yi Guo

{"title":"Millimeter-Wave Differentially Fed Single-Layered Circularly Polarized Antenna","authors":"Runcong Lv;Mingxuan Liang;Shi Feng Nie;Qing-Yi Guo","doi":"10.1109/LAWP.2024.3523510","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3523510","url":null,"abstract":"A millimeter-wave (mmw) circularly polarized (CP) antenna in single-layered laminate is proposed in this letter. For performances, it yields obvious advantages in terms of profile (single layer), gain and bandwidth when compared with recently reported high-gain CP antennas. For design method is the first attempt to introduce I-shaped differentially fed slots to achieve enhanced bandwidth over the traditional slot antenna. Then, we add complementary dipoles to the same plane of the I-shaped slots, contributing to CP radiation. Then, we build 1 × 8 antenna array to increase the gain of the proposed CP element. For demonstration, a single-layered CP antenna array operating at 77 GHz is designed, fabricated, and measured. Measured results show that the overlapped bandwidth for impedance matching, axial ratio and gain is 13% [(72 to 82) GHz]. It realizes a flat in-band gains with a peak gain of 13 dBic. It is a promising candidate for mmw vehicular communications systems such as unmanned aerial vehicles (UAV) and motor cars, which require low profile, CP radiation and fast data transmission speed.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 4","pages":"983-987"},"PeriodicalIF":3.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800802","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