IEEE Open Journal of Antennas and Propagation最新文献_第10页

Frequency Diverse Array for Signal Geofencing in Wireless Communications: Does it Work? 无线通信信号地理围栏的分频阵列：是否有效？

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-23 DOI: 10.1109/OJAP.2024.3465652

Simone Del Prete;Marina Barbiroli;Franco Fuschini

{"title":"Frequency Diverse Array for Signal Geofencing in Wireless Communications: Does it Work?","authors":"Simone Del Prete;Marina Barbiroli;Franco Fuschini","doi":"10.1109/OJAP.2024.3465652","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3465652","url":null,"abstract":"Frequency Diverse Array is an advanced antenna technology for clustering received power spatial distribution in specific areas, which has shown significant potential in many applications, including radar or wireless power transfer. In wireless communications, signal geofencing might be beneficial in increasing communication secrecy or reduce interference issues, but system communications through frequency diverse arrays require careful consideration about several design parameters. In this paper, a detailed analysis of the sensitivity of the geofencing effectiveness to the main array parameters is carried out. The analysis covers many aspects of the design, including the selection of the geometrical layout and the number of elements of the array, the frequency increase policy and the frequency offset across the elements and their spacing. The study also discusses the trade-offs between different design choices and provides insights into the performance in terms of focus efficiency and size of the focus area. Results show that bidimensional layouts, e.g., circular or planar, often represent effective solutions, whereas the linear arrangement can be a viable option only in case the frequencies are spread across the elements in a random-like fashion. Frequencies are usually increased according to either a logarithmic or a linear policy. The linear solution in general yields lower performance, but also lower complexity. Frequency offset, number of elements and their spacing represent further project parameters. Finally, a preliminary assessment of the multipath effect on the focus task shows that the performance of frequency diverse arrays can be affected by complex propagation conditions and deserve further investigations.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 1","pages":"51-63"},"PeriodicalIF":3.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10685467","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Guest Editorial: Antenna-Enabled Sensors and Systems, the New Frontier in Sustainable Wireless Systems 特邀社论：天线传感器和系统：可持续无线系统的新领域

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-23 DOI: 10.1109/OJAP.2024.3458268

Mahmoud Wagih;Gaetano Marrocco;Mohammad H. Zarifi;Jasmin Grosinger;Chaoyun Song;Qammer H. Abbasi

引用次数: 0

A Metallo-Dielectric Groove Gap Waveguide Slotted Array Antenna With Hybrid Glide-Symmetric Holes & “Mushroom”-Type Metasurfaces 一种具有混合滑模对称孔和“蘑菇”型超表面的金属-介电沟槽波导开槽阵列天线

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-23 DOI: 10.1109/OJAP.2024.3466472

Panagiotis Petroutsos;Stavros Koulouridis

{"title":"A Metallo-Dielectric Groove Gap Waveguide Slotted Array Antenna With Hybrid Glide-Symmetric Holes & “Mushroom”-Type Metasurfaces","authors":"Panagiotis Petroutsos;Stavros Koulouridis","doi":"10.1109/OJAP.2024.3466472","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3466472","url":null,"abstract":"We present a hybrid multilayer slot array antenna, targeting next-generation wireless communication systems, particularly in mmWave bands like the Ka-band. The hybrid structure utilizes a high-performance metal Groove Gap Waveguide (GGW) feeding network and facilitates the practical manufacturing of slotted antennas and dielectric substrate metasurfaces using printed circuit boards. The proposed antenna incorporates a hybrid glide symmetric holey metasurface into the GGW feeding. This integration addresses assembly challenges between metal and dielectric layers, avoiding delicate welding techniques. It prevents energy leakage between the two different materials, even when a small air gap is maintained between them. The antenna also involves a printed periodic surface comprising ‘Mushrooms’ type cells on a thin dielectric substrate. As an effect, this design reduces mutual coupling between parallel slotted array antennas and provides a more compact structure compared to alternative decoupling methods such as vertical corrugation slots, or horn types. The textured ‘Mushroom’ surface enhances the antenna directivity by 3.4 dB and reduces the level of sidelobes by up to 6.2 dB. Measurement results demonstrate an achieved impedance bandwidth (<inline-formula> <tex-math>$S_{11} lt -$ </tex-math></inline-formula>10 dB) of 8.15% within the frequency range of 37.88 GHz to 40.98 GHz. Additionally, the antenna achieves a gain of up to 16.55 dB over the frequency of interest.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 1","pages":"25-37"},"PeriodicalIF":3.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10689327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Polarized Wideband Filtering Antenna Array Based on Stacked-PCB Structure 基于堆叠pcb结构的双极化宽带滤波天线阵列

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-23 DOI: 10.1109/OJAP.2024.3466234

Matti Kuosmanen;Sten E. Gunnarsson;Johan Malmström;Juha Ala-Laurinaho;Jari Holopainen;Ville Viikari

{"title":"Dual-Polarized Wideband Filtering Antenna Array Based on Stacked-PCB Structure","authors":"Matti Kuosmanen;Sten E. Gunnarsson;Johan Malmström;Juha Ala-Laurinaho;Jari Holopainen;Ville Viikari","doi":"10.1109/OJAP.2024.3466234","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3466234","url":null,"abstract":"This paper investigates a thin low-pass filtering antenna array based on dual-polarized Vivaldi elements. The low-pass filtering in the antenna elements reduces the requirement for the front-end filtering between the antenna and the microwave electronics, resulting in improved overall out-of-band suppression, size reduction, and lower cost. The array employs a novel stacked-PCB structure, where simple two-sided PCBs are stacked on top of each other. The via-connected metal layers of all PCBs form a tapered slotline along the surface normal of the PCBs. The filtering effect is realized by corrugating the tapered slotlines, which provides effective, space-saving integration of the filters that fit into a half-wavelength lattice. According to unit-cell simulations, the proposed antenna array operates at 6–18.5 GHz, and the stopband extends from 21 GHz to 37 GHz. The antenna array provides a −10-dB active reflection coefficient (ARC) with beam-steering angles within ±60° in E- and D-planes, and −6 dB within ±55° in the H-plane. At stopband frequencies, the attenuation with respect to simulated total efficiency is at least 20 dB. The operation of the proposed antenna array is confirmed by measurements of an <inline-formula> <tex-math>$11times 12$ </tex-math></inline-formula> antenna array prototype, which show that the gain suppression level in the stopband is more than 30 dB up to 37 GHz, and more than 20 dB up to 40 GHz.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 1","pages":"38-50"},"PeriodicalIF":3.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10689344","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Open Journal of Antennas and Propagation Instructions for authors IEEE 天线与传播开放期刊作者须知

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-23 DOI: 10.1109/OJAP.2024.3459235

引用次数: 0

Compact Dual-Band Dual-Sense Circularly Polarized Fragmental Patch Antenna Optimized by Improved Simulated-Annealing-Based Algorithm 基于改进的模拟退火算法优化的紧凑型双频双感应圆极化片状贴片天线

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-19 DOI: 10.1109/OJAP.2024.3463794

Tianyu Shu;Bowen Feng;Long Zhang;Chuyue Chen;Hui Chen;Yaling Chen;Qinyu Zhang

{"title":"Compact Dual-Band Dual-Sense Circularly Polarized Fragmental Patch Antenna Optimized by Improved Simulated-Annealing-Based Algorithm","authors":"Tianyu Shu;Bowen Feng;Long Zhang;Chuyue Chen;Hui Chen;Yaling Chen;Qinyu Zhang","doi":"10.1109/OJAP.2024.3463794","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3463794","url":null,"abstract":"This study presents a compact dual-band dual-sense circularly polarized (CP) fragmental patch antenna that advanced by an improved simulated-annealing-based optimization algorithm. This design replaces truncated corners of traditional truncated patch antennas with fragmental structures, generating dual-band dual-CP radiation with a small frequency ratio and a high front-to-back ratio. The proposed optimized framework tackles the multi-objective optimization problem through hierarchical optimization to achieve an optimal balance among various performance metrics. Furthermore, the simulated annealing is improved using a matrix-based dynamic step-size perturbation mechanism and a nested cyclic process, averting premature convergence and ensuring multifaceted objective enhancement. The measurement results reveal that the proposed antenna can operate with a small frequency ratio of 1.07, providing left-hand CP radiation from 4.99 to 5.02 GHz and right-hand CP radiation 5.34 to 5.41 GHz, respectively. This compact cost-efficient design demonstrates potential for diverse antenna applications.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"5 6","pages":"1847-1853"},"PeriodicalIF":3.5,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10684264","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active Gain-Controlled Beam-Steering Transmissive Surface 有源增益控制光束转向透射面

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-17 DOI: 10.1109/OJAP.2024.3462810

Seyed Ehsan Hosseininejad;Amirmasood Bagheri;Fan Wang;Mohsen Khalily;Rahim Tafazolli

{"title":"Active Gain-Controlled Beam-Steering Transmissive Surface","authors":"Seyed Ehsan Hosseininejad;Amirmasood Bagheri;Fan Wang;Mohsen Khalily;Rahim Tafazolli","doi":"10.1109/OJAP.2024.3462810","DOIUrl":"10.1109/OJAP.2024.3462810","url":null,"abstract":"Engineered electromagnetic surfaces enable enhancing the strength of a signal in the desired direction(s) using anomalous reflection/transmission. However, to boost the gain of the conventional surfaces, the common solution is to increase its aperture size where this method limits the gain performance for limited space in scenarios for large-distance communication. This paper proposes a gain-controlled beam-steering polarization-engineered transmissive surface to tackle this challenge. To implement such a functionality, a transmissive unit cell properly integrated with transistors and phase shifters is introduced with the ability of simultaneous manipulation of phase, amplitude (reduction and amplification), and polarization. Then, a supercell including the array of unit cells with desired linear phase gradient is designed and analyzed using Floquet approach to tilt the transmitted beam. Finally, to verify the proposed idea, a surface including \u0000<inline-formula> <tex-math>$12times 12$ </tex-math></inline-formula>\u0000 unit cells is designed, fabricated and verified. It is demonstrated that a maximum gain of 25 dB compared to air aperture and 11 dB compared to the passive one are achieved by assuming a constant size at 5 GHz. Based on this gain improvement, the active surface’s aperture efficiency is 12.58 times greater than that of the passive surface. Moreover, the surface gain can be reconfigured by the amplification level of the transistors, providing efficient dynamic way for changing the gain instead of the static resizing of aperture.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"5 6","pages":"1786-1794"},"PeriodicalIF":3.5,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10681599","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Transparent Circularly Polarized Antenna Performance for Automotive Applications 增强汽车应用中透明圆极化天线的性能

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-17 DOI: 10.1109/OJAP.2024.3462697

Maryam Faizi Khajeim;Rashid Mirzavand

{"title":"Enhancing Transparent Circularly Polarized Antenna Performance for Automotive Applications","authors":"Maryam Faizi Khajeim;Rashid Mirzavand","doi":"10.1109/OJAP.2024.3462697","DOIUrl":"10.1109/OJAP.2024.3462697","url":null,"abstract":"In this paper, the impact of the vehicle body on the transparent circularly polarized (CP) antenna’s performance when installed on the vehicle windshield has been investigated. The incorporation of an absorber layer on the vehicle floor to improve the antenna’s performance has been proposed. The study also evaluates how the placement of the antenna on the windshield affects its performance. Utilizing a transparent CP spiral slot antenna operating at 1.227 GHz and 1.575 GHz, the results reveal that the radiation performance of CP antennas on windshields significantly depends on their positioning. Additionally, the vehicle body affects the CP antenna’s radiation pattern and axial ratio (AR). We propose adjusting the antenna’s position and incorporating an absorber layer on the vehicle floor to address these effects. Notably, this absorber layer has the potential to simultaneously improve the performance of multiple antennas mounted on the windshield. The enhancement caused by this layer is verified through full-wave simulations and measurements. The impact of seats and four occupants inside the vehicle on the antenna’s performance in the presence of the absorber layer is also investigated. With the absorber layer and occupants present, the antenna achieves an AR beamwidth of 36° and 31° at 1.227 GHz and 1.575 GHz, respectively, in the \u0000<inline-formula> <tex-math>$y^{prime}z^{prime}$ </tex-math></inline-formula>\u0000-plane.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"5 6","pages":"1446-1454"},"PeriodicalIF":3.5,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10681600","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spillover Analysis and Mainbeam Characterisation of Arctic Weather Satellite Radiometer Using Method of Moments 利用矩量法分析北极气象卫星辐射计的溢出分析和主光束特征

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-17 DOI: 10.1109/OJAP.2024.3462601

Roland Albers;Mustafa Murat Bilgic;Karl-Erik Kempe;Alistair Bell;Axel Murk

引用次数: 0

Pushing Piezoelectric Transmitters to the MHz Regime 将压电发射机推向兆赫频段

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-16 DOI: 10.1109/OJAP.2024.3454967

Tristan A. Wilson;Srinivas Prasad Mysore Nagaraja;Stewart Sherrit;Devin Willey;Adam Wildanger;Darmindra D. Arumugam

{"title":"Pushing Piezoelectric Transmitters to the MHz Regime","authors":"Tristan A. Wilson;Srinivas Prasad Mysore Nagaraja;Stewart Sherrit;Devin Willey;Adam Wildanger;Darmindra D. Arumugam","doi":"10.1109/OJAP.2024.3454967","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3454967","url":null,"abstract":"Transmitters driven by piezoelectric resonators have been shown to radiate quasistatic electromagnetic waves in the low frequency and very low frequency (LF and VLF) bands. These devices make use of the inverse piezoelectric effect to convert continuous-wave excitation into mechanical stress and strain that is oscillatory in nature. This leads to the generation of electrical charge that accelerates onto floating electrodes exploiting topological symmetry, which results in dipole-like field radiation. The radiation efficiency can be three orders of magnitude greater than that of conventional electrically-small antennas operating in this frequency range. To our knowledge, this is the first time that radiation has been shown with lithium niobate (LiNbO3) acoustically-driven transmitters operating in the MHz regime. The measured results from a line-of-sight spatial power drop-off experiment show great promise for physically realizable transmitters much smaller than the current state-of-the-art at these frequencies. These devices offer great potential to be used as compact low-power transmitters on platforms constrained by power and volume, such as drones, quadcopters, and microsatellites. It is suggested that arraying these devices may allow for much more compact spacecraft radar and communication hardware, which can greatly benefit the overall system performance.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"349-356"},"PeriodicalIF":3.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10680883","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0