Iet Microwaves Antennas & Propagation最新文献

A Novel High Suppression Multilayer Frequency-Selective Surface Based on Hexagonal Grids 一种基于六边形网格的高抑制多层频率选择表面

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-07-01 DOI: 10.1049/mia2.70037

Boyang Wang, Xuewu Cui, Wei Yang, Lei Han, Suli Guo

{"title":"A Novel High Suppression Multilayer Frequency-Selective Surface Based on Hexagonal Grids","authors":"Boyang Wang, Xuewu Cui, Wei Yang, Lei Han, Suli Guo","doi":"10.1049/mia2.70037","DOIUrl":"https://doi.org/10.1049/mia2.70037","url":null,"abstract":"This paper addresses the issue of achieving excellent overall performance for frequency selective surface (FSS) radomes. A dual-layer frequency selective surface based on a hexagonal structure is proposed, which offers broadband suppression, roll-off characteristics, angular stability and a low insertion loss passband. The proposed FSS unit consists of two dielectric layers and a PMI foam layer, with conductive layers placed on both sides of the PMI foam. The FSS is composed of hexagonal ring units and three-level sub-centre units. This design achieves broadband suppression from 2 to 20 GHz, while maintaining a flat passband between 7.59 and 8.71 GHz, corresponding to a relative bandwidth of 10.8%. The transmission characteristics remain stable with incident angles ranging from 0° to 50° under both TE and TM modes. To validate the feasibility of the FSS design, a physical prototype was fabricated and tested. The experimental results show that the FSS performs well in broadband suppression, roll-off characteristics, flat passband and angular stability, in agreement with the simulation results. This demonstrates its strong overall performance and promising potential for applications in stealth antenna radomes.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Design of an Energy Selective Reflectarray Antenna for Adaptive Prevention of High-Intensity Radiation Fields 高强度辐射场自适应防护的能量选择反射天线设计

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-06-28 DOI: 10.1049/mia2.70038

Jihong Zhang, Zhuang Qu, Ming Xu, Duocai Zhai, Song Zha, Peiguo Liu

{"title":"Design of an Energy Selective Reflectarray Antenna for Adaptive Prevention of High-Intensity Radiation Fields","authors":"Jihong Zhang, Zhuang Qu, Ming Xu, Duocai Zhai, Song Zha, Peiguo Liu","doi":"10.1049/mia2.70038","DOIUrl":"https://doi.org/10.1049/mia2.70038","url":null,"abstract":"This paper presents an energy selective reflectarray antenna with field-induced gain to prevent the high-intensity radiation fields (HIRF) in the X-band. Each unit cell of the reflectarray was anti-parallelled loaded with two diodes, the status of which could adaptively change the reflection phase according to the field intensity. When the diodes were all in the OFF-state, the unit cells in the reflectarray followed the gradient phase distribution, forming a high-gain beam; once there were diodes triggered by induced voltage caused by the high intensity incident wave, the gradient phase distribution was unsatisfied so that the reflected wave would be diffused and the gain would decrease. After full-wave simulation, the prototype was manufactured and measured in both the high- and low-intensity environments. The simulation and measurement results indicate that when the electric field strength is below 100 V/m, the achieved gain is above 25 dBi, the 1 dB bandwidth is 5.6% and the aperture efficiency is 29%; in the case of HIRF's illumination, the gain decreased by more than 20 dB within a bandwidth of 700 MHz. This dual-functional design holds significant promise for protecting sensitive payloads in aerospace platforms and improving signal integrity in radar systems exposed to electromagnetic interference.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Development of Wideband High-Selective Circularly Polarised Antenna Based on Filtering Quadrature Phase Feeding Network 基于滤波正交相位馈电网络的宽带高选择性圆极化天线的研制

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-06-18 DOI: 10.1049/mia2.70033

Zhipeng Xia, Qing-Yuan Lu, Shangjun Jiang, Jianpeng Wang, Wen Wu, Yongxin Guo

{"title":"Development of Wideband High-Selective Circularly Polarised Antenna Based on Filtering Quadrature Phase Feeding Network","authors":"Zhipeng Xia, Qing-Yuan Lu, Shangjun Jiang, Jianpeng Wang, Wen Wu, Yongxin Guo","doi":"10.1049/mia2.70033","DOIUrl":"https://doi.org/10.1049/mia2.70033","url":null,"abstract":"This paper presents a new design of circularly polarised (CP) antenna with wideband and high gain selectivity. To achieve good circular polarisation performance, a wideband quadrature phase feeding network is initially developed with two output signals characterised by equal magnitude and consistent 90-degree phase difference. Then, to realise high gain selectivity, multi-mode resonators are introduced into the feeding network. Therefore, a specific filtering quadrature phase feeding network (FQFN) that integrates the functions of power division, frequency selectivity and phase shifting is successfully produced. Afterwards, a three-order FQFN operating at central frequency of 2.5 GHz is developed and measured for demonstration. As expected, the demonstrator has obtained wide impedance and phase bandwidths of 57.3% and 70.8%, respectively, together with two transmission zeros at about 1.25 and 3.75 GHz. Finally, a pair of crossed magneto-electric dipole antennas are implemented by adopting the proposed FQFN to achieve wideband CP radiation with high selectivity. Experimental results exhibit that the proposed scheme has achieved both impedance bandwidth of 65.3% and 3-dB axial ratio bandwidth of 62.4%, simultaneously. Moreover, attributing to the integration of the filtering function within the FQFN, performance of high gain selectivity is accomplished and ensured by three transmission zeros in gain response.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144315136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Behaviour Prediction of Via-Holes Transition Based on Transfer Learning 基于迁移学习的过孔迁移行为预测

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-06-17 DOI: 10.1049/mia2.70035

Weihong Liu, Yanbo Zhao, Shuai Zhang, Duan Xie, Haoqian Wu

{"title":"Behaviour Prediction of Via-Holes Transition Based on Transfer Learning","authors":"Weihong Liu, Yanbo Zhao, Shuai Zhang, Duan Xie, Haoqian Wu","doi":"10.1049/mia2.70035","DOIUrl":"https://doi.org/10.1049/mia2.70035","url":null,"abstract":"Via-holes transition is an important component in multi-layer microwave and millimetre wave circuit systems, directly affecting signal transmission performance. In order to improve the millimetre wave performance of via-holes transition, the electromagnetic design automation software has been used to optimise the circuits design, which could consume a plenty of computer resources. In recent years, deep neural network (DNN) has been widely applied in the research of microwave component and is expected to solve this challenging and time-consuming problem. Employing large labelled datasets to obtain high-performance DNN model is desired but troublesome. Therefore, a transfer learning with deep neural network (TLDNN) surrogate model is proposed to improve the modelling efficiency. The experimental validation demonstrates that, compared with the conventional DNN, the TLDNN can reduce the amount of training data required without losing accuracy and accelerating modelling speed for behaviour prediction of via-holes transition. A prototype via-holes transition fabricated on multilayer liquid crystal polymer (LCP) substrate exhibits an average S11 deviation of less than 2.9 dB between the measured and predicted results.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Ultra Wideband Low-RCS Linear Polarised Array Based on Composite Metasurface 基于复合超表面的超宽带低rcs线性极化阵列

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-06-09 DOI: 10.1049/mia2.70024

Yanni Wang, Chenjiang Guo, Xia Ma, Jun Ding, Xiaoyan Pang

{"title":"Ultra Wideband Low-RCS Linear Polarised Array Based on Composite Metasurface","authors":"Yanni Wang, Chenjiang Guo, Xia Ma, Jun Ding, Xiaoyan Pang","doi":"10.1049/mia2.70024","DOIUrl":"https://doi.org/10.1049/mia2.70024","url":null,"abstract":"This paper proposed the design of an ultra-wideband antenna array with low radar cross section (RCS) based on a composite metasurface. In the high-frequency region, an ultra-wideband polarisation conversion metasurface (PCM) unit is designed. Under normal incident wave illumination, a pair of mirrored PCM units operate in anti-phase, effectively achieving radar cross section reduction (RCSR). In the lower frequency region, a corner-cut square patch is introduced, which generates an approximate <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>180</mn>\u0000 <mo>°</mo>\u0000 </mrow>\u0000 <annotation> $180{}^{circ}$</annotation>\u0000 </semantics></math> phase shift relative to the PCM unit, enabling RCSR through phase cancellation. These corner-cutted square patches simultaneously serve as antenna radiators, thereby simplifying the design and reducing structural complexity. Simulation results demonstrate that the metasurface-excited antenna array operates within a frequency range of 10<math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>∼</mo>\u0000 </mrow>\u0000 <annotation> ${sim} $</annotation>\u0000 </semantics></math>11.5 GHz, achieving a peak gain of 12.5 dBi. The in-band and out-of-band RCSR bandwidth reaches 125.6%. Compared with the reference antenna and reference metasurfaces composed of a single type of unit, the proposed antenna not only broadens the RCSR bandwidth but also enhances the RCSR performance. Finally, the fabricated antenna is measured, and the measured results align well with the simulations, confirming the proposed design's effectiveness, antenna array, metasurface, radar cross section, ultra-wideband, and phase cancellation.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Hybrid Frequency-Polarisation Coding Method for Chipless Radio-Frequency Identification Tags With Angular Orientation 角定向无芯片射频识别标签的混合频偏振编码方法

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-06-05 DOI: 10.1049/mia2.70028

Zilong Chen, Yang Yang, Xiaoxiang He, Shengchuan Xiao

引用次数: 0

A Novel Ku-Band Waveguide Piezo-Electric Air Gap Capacitor Using a Single Tuning Element 一种使用单一调谐元件的新型ku波段波导压电气隙电容器

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-06-05 DOI: 10.1049/mia2.70029

Abraham Loutridis, Ioannis Vagias, Glenn Leighton, Chris Shaw

{"title":"A Novel Ku-Band Waveguide Piezo-Electric Air Gap Capacitor Using a Single Tuning Element","authors":"Abraham Loutridis, Ioannis Vagias, Glenn Leighton, Chris Shaw","doi":"10.1049/mia2.70029","DOIUrl":"https://doi.org/10.1049/mia2.70029","url":null,"abstract":"In this work, a tuning element with controllable air gap integrated and implemented in a rectangular Ku-band WR62 waveguide is presented. The proposed tuning element concept, consists of two, top and bottom, thin conductive parallelepiped arms, which are placed in the middle of the rectangular waveguide structure. The bottom arm is bending to control the gap width (w) between the two arms, whereas the second arm is fixed. The curvature of the bending arm is controlled by a piezo-electric actuator, which affects the phase shift of the re-scattered E-field at the output port. The tuning element was designed with a 5% bandwidth centred at 15 GHz. The compact size, low-cost and the easy-to-manufacture proposed design offers a considerable phase shift with very low insertion loss, given its electrical size and operational waveband. A prototype, for the distinct frequency band, has been manufactured and measured. The same prototype has been simulated in ANSYS HFSS. The numerical results will be later used to validate the actual electromechanical prototype.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Systematic Approach for Determining Transmitarray Specifications in Near-Field Scenarios 一种确定近场发射阵列规格的系统方法

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-05-29 DOI: 10.1049/mia2.70027

Sara Moinzad, Jalil A. Rashed Mohassel, Mahmoud Mohammad-Taheri

{"title":"A Systematic Approach for Determining Transmitarray Specifications in Near-Field Scenarios","authors":"Sara Moinzad, Jalil A. Rashed Mohassel, Mahmoud Mohammad-Taheri","doi":"10.1049/mia2.70027","DOIUrl":"https://doi.org/10.1049/mia2.70027","url":null,"abstract":"Manipulating near-field electromagnetic wavefronts is crucial for hyperthermia, compact test range systems and wireless power transmission. This paper investigates a design methodology of transmitarrays for near-field wavefront shaping. Unlike conventional methods that rely on trial and error or optimisation procedures, this approach establishes practical relationships to determine transmitarray specifications. At first, the achievable resolution is calculated based on the observation distance. Then, transmitarray specifications are calculated based on the number of observation points, observation distance and achievable resolution. This methodology enables a swift and precise design process by integrating the Moore–Penrose inverse technique and dyadic Green's functions (DGFs). Detailed examples demonstrate the effectiveness of this approach, achieving desired electromagnetic patterns while reducing complexities and design iterations. This work significantly advances the understanding and practical implementation of near-field shaping techniques, particularly for applications requiring tailored electromagnetic patterns. Analytical and experimental results rigorously validate the problem formulation, confirming the proposed algorithm's capability and highlighting its potential for widespread application.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The Large Gap E-Plane Omori Circulator: First and Second Circulation Conditions 大间隙e平面Omori环行器：一、二次循环条件

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-05-15 DOI: 10.1049/mia2.70026

Joseph Helszajn, Louis-Philippe Carignan, Mark McKay, Bill Tsounis, Ke Wu

引用次数: 0

Fully Controllable Beam-Steering 1-THz Transmitarray Using Graphene–Metal Hybrid Metasurface 基于石墨烯-金属混合超表面的完全可控波束导向1太赫兹发射阵列

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-05-15 DOI: 10.1049/mia2.70025

P. Hosseini, H. Oraizi

{"title":"Fully Controllable Beam-Steering 1-THz Transmitarray Using Graphene–Metal Hybrid Metasurface","authors":"P. Hosseini, H. Oraizi","doi":"10.1049/mia2.70025","DOIUrl":"https://doi.org/10.1049/mia2.70025","url":null,"abstract":"In this paper, a 1-THz graphene–metal-hybrid transmissive metasurface is proposed, which consists of six layers. By applying a dc biasing voltage, over a <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>360</mn>\u0000 <mo>°</mo>\u0000 </mrow>\u0000 <annotation> $360{}^{circ}$</annotation>\u0000 </semantics></math>-phase variation of the transmitted wave is obtained. Also a transmitarray for steering a pencil-beam in the 3D direction is designed using the proposed unit cell. Using the patch type structure in the transmitarray design has less surface wave and edge diffraction, in comparison with slot type transmitarray design, which leads to lower side lobe level and a wider steering angular rang. The obtained maximum gain is 23.5 dB. The designed beam steering is in <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>θ</mi>\u0000 <mo>=</mo>\u0000 <mn>0</mn>\u0000 <mo>°</mo>\u0000 <mo>−</mo>\u0000 <mn>45</mn>\u0000 <mo>°</mo>\u0000 </mrow>\u0000 <annotation> $theta =0{}^{circ}-45{}^{circ}$</annotation>\u0000 </semantics></math> and <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>ϕ</mi>\u0000 <mo>=</mo>\u0000 <mn>0</mn>\u0000 <mo>°</mo>\u0000 <mo>−</mo>\u0000 <mn>360</mn>\u0000 <mo>°</mo>\u0000 </mrow>\u0000 <annotation> $phi =0{}^{circ}-360{}^{circ}$</annotation>\u0000 </semantics></math>.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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