IEEE Transactions on Antennas and Propagation最新文献_第7页

Fast Surface Error Diagnosis for Radiotelescopes Using Linearized Microwave Holography 利用线性化微波全息技术快速诊断射电望远镜表面误差

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-24 DOI: 10.1109/TAP.2025.3542619

Celia Fontá Romero;Fernando Rodríguez Varela;Belén Galocha Iragüen;José-Antonio López-Pérez

{"title":"Fast Surface Error Diagnosis for Radiotelescopes Using Linearized Microwave Holography","authors":"Celia Fontá Romero;Fernando Rodríguez Varela;Belén Galocha Iragüen;José-Antonio López-Pérez","doi":"10.1109/TAP.2025.3542619","DOIUrl":"https://doi.org/10.1109/TAP.2025.3542619","url":null,"abstract":"Radiotelescopes are typically composed of large reflector antennas located outdoors. These antennas are designed to achieve high levels of gain, which is possible due to their large size and RF systems designed for working at high frequencies. However, various sources of errors (such as mounting imperfections or deformations caused by gravity and weather effects) are difficult to identify and can significantly degrade the performance of the radiotelescope, reducing its gain. The correct diagnosis of these errors has been a challenge in radio astronomy. The most widely used technique is microwave holography, in which mechanical errors are detected through long electromagnetic acquisitions. The measured far-field is processed to obtain the aperture field, thus the errors affecting the surface or the phase distribution. In this article, a novel methodology is proposed to diagnose reflector errors using holography. The proposed approach defines a system that models all possible aperture errors as a combination of basis functions, directly relating the errors to the acquired far field and reducing the number of samples required for analysis.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3527-3536"},"PeriodicalIF":4.6,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10902049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231998","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

Nonrotationally Symmetric V-Band Geodesic Lens Antenna With Defined Footprint 具有确定足迹的非旋转对称 V 波段大地透镜天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-24 DOI: 10.1109/TAP.2025.3541918

Sarah Clendinning;Oskar Zetterstrom;José Rico-Fernández;Francisco Mesa;Oscar Quevedo-Teruel

引用次数: 0

Two-Dimensional Scanning Array in Quad-Polarization Based on Pattern and Polarization Reconfigurable Element With Single Feed 基于单馈模式偏振可重构元件的四极化二维扫描阵列

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-24 DOI: 10.1109/TAP.2025.3542588

Yu Du;Zhu-Bin Han;Zheng-Liang Liu;Rui-Zi Chen;Jian-Ying Li

{"title":"Two-Dimensional Scanning Array in Quad-Polarization Based on Pattern and Polarization Reconfigurable Element With Single Feed","authors":"Yu Du;Zhu-Bin Han;Zheng-Liang Liu;Rui-Zi Chen;Jian-Ying Li","doi":"10.1109/TAP.2025.3542588","DOIUrl":"https://doi.org/10.1109/TAP.2025.3542588","url":null,"abstract":"In this communication, a phased array possessing 2-D scanning capability in quad-polarization (quad-Pol.) is proposed with larger element spacing. This array is based on a new pattern and polarization reconfigurable antenna, which is composed of four inverted-L antennas connected to the center probe through p-i-n diodes. By toggling the bias states of diodes, pattern reconstruction and polarization reconstruction (y-Pol., x-Pol., and ±45°-Pol.) can be achieved simultaneously, effectively improving the scanning and antijamming capabilities. Subsequently, a <inline-formula> <tex-math>$6times 6$ </tex-math></inline-formula> array with parasitic elements surrounding is designed and fabricated. The measured results demonstrated a scanning range of ±60° in the E- and D-planes for the y-Pol. and x-Pol. In the H-plane, the scanning range is within ±45°. For ±45°-Pol., a ±45° scanning range is implemented in the E- and H-planes. In the D-plane, benefitting from the pattern reconfigurability, a ±60° scanning range is covered. The maximum realized gains at 4.22 GHz are 19.23 and 19.56 dBi, respectively. The scanning gain fluctuation is within 3 dB. Compared with previous studies, the polarization diversity is introduced in 2-D scanning arrays to improve communication quality and antijamming ability. Meanwhile, the function realization is under the maximum element spacing of <inline-formula> <tex-math>$0.54lambda $ </tex-math></inline-formula> and single feed, saving 25% of the system cost.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3424-3429"},"PeriodicalIF":4.6,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918701","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 Deep-Learning-Based Modeling Method for Phase-Free Near-Field Scanning Measurement 基于深度学习的无相近场扫描测量建模方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-24 DOI: 10.1109/TAP.2025.3542600

Shu-Li Zhao;Jian-Fei Wu;Yang Song;Le-Dong Chen;Zhi-Tao Xiao

引用次数: 0

A Low-Profile Programmable 2-bit Array Based on a Novel Highly Integrated Element 一种基于新型高集成元件的低姿态可编程2位阵列

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-24 DOI: 10.1109/TAP.2025.3541894

Meng Xiang;Yu Xiao;Jinxi Deng;Shiyou Xu;Fan Yang;Houjun Sun

{"title":"A Low-Profile Programmable 2-bit Array Based on a Novel Highly Integrated Element","authors":"Meng Xiang;Yu Xiao;Jinxi Deng;Shiyou Xu;Fan Yang;Houjun Sun","doi":"10.1109/TAP.2025.3541894","DOIUrl":"https://doi.org/10.1109/TAP.2025.3541894","url":null,"abstract":"In this communication, a programmable 2-bit array antenna based on a highly integrated element with low profile and high efficiency is proposed. Based on a ring structure and four PIN diodes, 90° and 180° phase differences can be achieved by changing the resonant dimension and mirroring the states, respectively. The 2-bit element is then obtained by the two methods, and the bias control network for PIN diodes is integrated into the polarization grids. Compared to traditional cascaded phase shifter schemes, the proposed design adopts a new integrated method to simplify the structure, which not only reduces element losses but also simplifies the design of the control section. To further avoid the deterioration of array radiation performance caused by the planar feeding network, its phase and amplitude distributions are optimized by referring to those of the spatial feed in this design. Finally, a low-profile programmable 2-bit array antenna with <inline-formula> <tex-math>$8times 8$ </tex-math></inline-formula> elements is designed and fabricated. The measured results indicate that the designed array can reach a peak aperture efficiency of 67% and achieve a 2-D beam scanning range.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3418-3423"},"PeriodicalIF":4.6,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918699","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

An Irregular Optimizing Design of Connected Vivaldi Array for Wideband and Wide-Angle Scanning 宽带广角扫描连接维瓦尔第阵列的不规则优化设计

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-21 DOI: 10.1109/TAP.2025.3542295

Yue Zhang;Peng-Fei Gu;Zi He;Hua-Guang Bao;Juan Xu;Jian-Xu Sun;Yu-Jian Cheng;Zhen-Hong Fan;Da-Zhi Ding

{"title":"An Irregular Optimizing Design of Connected Vivaldi Array for Wideband and Wide-Angle Scanning","authors":"Yue Zhang;Peng-Fei Gu;Zi He;Hua-Guang Bao;Juan Xu;Jian-Xu Sun;Yu-Jian Cheng;Zhen-Hong Fan;Da-Zhi Ding","doi":"10.1109/TAP.2025.3542295","DOIUrl":"https://doi.org/10.1109/TAP.2025.3542295","url":null,"abstract":"In this article, an irregular optimizing design method of wideband and wide-angle scanning array is proposed. The sparsity technology was first extended into the optimization of the arrangement of wideband-connected array components. By virtue of adjusting the width of the edge radiation wall, an optimal radiation distribution of a wideband array can be implemented, which also exploits more freedom of element distribution and characteristic design. Moreover, the advantage is that the connectivity between wideband antenna units and the continuity among array current distribution can be ensured. Though the optimized array layout can accomplish lower sidelobe level (SLL) with equal-amplitude excitation feed, it may also exacerbate the complexity of the mutual coupling (MC), which further affects the radiation characteristics such as bandwidth, voltage standing wave ratio (VSWR), and wide-angle scanning. Hence, the space mapping (SM) technique was introduced to accomplish the wideband irregular optimal design involving the MC effects for higher optimizing efficiency and accuracy. The genetic algorithm (GA) was incorporated with active element pattern (AEP) to further optimize the irregular array distribution for the coarse model of the SM design procedure, which involves the actual array element rather than the only array factor synthesis. A prototype array was made and measured, and the experimental results showed that the design results were in good agreement with the measurement results. Verified the efficiency of synthesizing array patterns with lower SLL and fewer Vivaldi elements in broadband and wide-angle scanning.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3743-3756"},"PeriodicalIF":4.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219662","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

Circular Statistics for Antenna Measurements 天线测量的圆形统计

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-21 DOI: 10.1109/TAP.2025.3542277

Mirte Verdaasdonk;A. Bart Smolders;Ad C. F. Reniers

{"title":"Circular Statistics for Antenna Measurements","authors":"Mirte Verdaasdonk;A. Bart Smolders;Ad C. F. Reniers","doi":"10.1109/TAP.2025.3542277","DOIUrl":"https://doi.org/10.1109/TAP.2025.3542277","url":null,"abstract":"Statistics is a necessary tool to assess the uncertainties in a measurement technique. In this way, we can determine the reliability of the technique and can aim to improve this. In measurement techniques where both the amplitude and phase are important, statistics should be applied not only to the magnitude, but also to the phase. Linear statistics has several disadvantages when applied to the phase. Most importantly, the computed mean is dependent on the chosen branch cut position and the computed confidence interval is not completely accurate, even if the computed mean is correct. Although circular statistics does not have these issues, it is, to the best of our knowledge, not yet used in antenna measurements, except for channel sounding. In this article, methods known in circular statistics to compute the mean and deviation are explained, along with some circular distribution functions. The effects are shown in two case studies for a planar near-field (NF) measurement and a phase pattern measurement. Furthermore, a methodology is constructed by the steps that should be taken to compute the expanded uncertainty of the phase. Using circular distribution functions, this can be computed more accurately at the cost of a higher computation time.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"4026-4037"},"PeriodicalIF":4.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10899751","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219730","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

Physical Layer Secure Transmission for Multiuser Scenarios Using 4-D Antenna Arrays With Pseudorandom Time Modulation 基于伪随机时间调制的四维天线阵列的多用户场景物理层安全传输

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-21 DOI: 10.1109/TAP.2025.3542280

Kejin Chen;Xiaodong Gong;Feng Yang;Yikai Chen;Shi-Wei Qu;Shiwen Yang

{"title":"Physical Layer Secure Transmission for Multiuser Scenarios Using 4-D Antenna Arrays With Pseudorandom Time Modulation","authors":"Kejin Chen;Xiaodong Gong;Feng Yang;Yikai Chen;Shi-Wei Qu;Shiwen Yang","doi":"10.1109/TAP.2025.3542280","DOIUrl":"https://doi.org/10.1109/TAP.2025.3542280","url":null,"abstract":"The increasing integration of sixth-generation (6G) wireless networks with critical infrastructures requires a heightened focus on enhancing transmission security. In recent years, there has been extensive research on physical layer security (PLS) as a potential alternative to conventional security methods that rely on network complexity. The fundamental concept of PLS is to maximize the randomness of undesired channels. The high design degrees of freedom (DoFs) provided by 4-D antenna arrays make them an excellent platform for achieving secure transmission at the physical layer. However, due to the limited DoFs of time modulation, it is often challenging to balance transmission security and the number of legitimate users. The multiuser scenarios have a broader scope in practical applications. Therefore, the scalability challenges in accommodating multiple users significantly restrict the utilization of 4-D antenna arrays in PLS transmission. To address this issue, this article proposes a multiuser secure transmission approach based on 4-D antenna arrays. This approach combines baseband and time modulation, enabling simultaneous multiuser secure transmission through pseudorandom time modulation (PRTM). Some selected numerical and experimental results are also provided to validate the effectiveness of the proposed approach.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"4050-4060"},"PeriodicalIF":4.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219777","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

FSIW Cavity-Based Self-Packaging Filtering Slot Antennas With Wide-Stopband and High-Frequency Selectivity 基于FSIW的宽阻带高频选择性自封装滤波槽天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-20 DOI: 10.1109/TAP.2025.3541925

Xin Zhou;Gang Zhang;Kam-Weng Tam;Ziyu Pang;Zhuowei Zhang;Huawei Lin;Jiasheng Hong

{"title":"FSIW Cavity-Based Self-Packaging Filtering Slot Antennas With Wide-Stopband and High-Frequency Selectivity","authors":"Xin Zhou;Gang Zhang;Kam-Weng Tam;Ziyu Pang;Zhuowei Zhang;Huawei Lin;Jiasheng Hong","doi":"10.1109/TAP.2025.3541925","DOIUrl":"https://doi.org/10.1109/TAP.2025.3541925","url":null,"abstract":"This article proposes a novel design approach for miniaturized, highly selective, self-packaged, and wide-stopband filtering slot antennas based on C- and T-type folded substrate integrated waveguide (C-/T-FSIW) cavities. First, two forms of FSIW cavity are explored and analyzed. New coupled C-type half-mode FSIW (C-HMFSIW) cavities are developed. A filtering antenna is proposed, employing a C-HMFSIW cavity for feeding and a slot-loaded C-FSIW cavity for radiation. By introducing cross-coupling between different resonators, a radiation null (RN) is achieved. To further enhance bandwidth and frequency selectivity, a new antenna configuration is developed using a C-HMFSIW cavity for feeding and a slot-loaded T-FSIW cavity for radiation. After loading the radiation slot, the T-FSIW cavity serves as two parts: one as the main radiator and the other as a parasitic radiator opposite to it. This configuration increases antenna bandwidth and generates an additional RN. Interestingly, adjusting the position of the radiation slot allows the RN to switch between the upper and lower stopbands. The antennas proposed in this work exhibit good stopband performance and compact size. Three filtering antenna prototypes are designed, fabricated, and measured, showing consistent results between measurements and simulations.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3503-3516"},"PeriodicalIF":4.6,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232115","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 New Buffering Scheme for Shared-Aperture Dual-Band Base Station Antenna Array Utilizing Tight-Coupling Concept 基于紧密耦合概念的共享孔径双频基站天线阵缓冲新方案

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-19 DOI: 10.1109/TAP.2025.3540554

Yi He;Shaodong Wang;Gengming Wei;Can Ding;Y. Jay Guo

{"title":"A New Buffering Scheme for Shared-Aperture Dual-Band Base Station Antenna Array Utilizing Tight-Coupling Concept","authors":"Yi He;Shaodong Wang;Gengming Wei;Can Ding;Y. Jay Guo","doi":"10.1109/TAP.2025.3540554","DOIUrl":"https://doi.org/10.1109/TAP.2025.3540554","url":null,"abstract":"A novel shared-aperture dual-band array based on a new buffering scheme is presented, with superior characteristics of an exceptionally low profile, stable dual-band radiation performance, and naturally suppressed cross-band interferences in 0.69–0.96 GHz (32.7%) and 1.47–2.7 GHz (59.0%). Unlike the previous shared-aperture array schemes that focus on reducing coupling between low-band (LB) and high-band (HB) antennas to address unwanted cross-band interferences, this array introduces a special tightly coupled buffering layer (TCBL) that is tightly coupled with both LB and HB radiators. The TCBL serves as a buffer, facilitating the radiation of both LB and HB antennas while mitigating cross-band interferences without requiring extra filtering/frequency-selective measures. It plays two crucial roles. In the LB, the TCBL functions as a reactance-compensation loading that enables a significantly low profile of the LB antenna. This leads to a reduced LB scattering influence on the HB antenna, realizing restored HB radiation performance. In the HB, the TCBL enables a new resonant mode that further expands the HB bandwidth from 45.5% to 59.0%. Meanwhile, the array effectuates effective cross-band isolation, as the TCBL prevents the electromagnetic energy from transferring to the cross-band ports. An array prototype was fabricated and tested, with measured results confirming the simulated ones.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"3492-3502"},"PeriodicalIF":4.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232120","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