Iet Microwaves Antennas & Propagation最新文献_第10页

Development in ambient backscatter communications 环境反向散射通信的发展

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-22 DOI: 10.1049/mia2.12419

Shujuan Chang, Yuan Ding

引用次数: 0

A two-dimensional beam steering Fabry–Pérot antenna employing a liquid-based reconfigurable metasurface 采用基于液体的可重构元表面的二维波束控制Fabry–Pérot天线

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-21 DOI: 10.1049/mia2.12420

Wei Chen, Zhiming Liu, Huilin Zhou, Jens Bornemann, Yuhao Wang, Fei Wang

引用次数: 0

Miniaturised single-layer bandpass filters using triple and quad-mode patch resonators 使用三模和四模贴片谐振器的小型化单层带通滤波器

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-19 DOI: 10.1049/mia2.12417

Ke Gong, Sensen Ma, Chunfeng Fan, Jintu Sun, Jiahui Han, Yan Liu, Qing Liu

{"title":"Miniaturised single-layer bandpass filters using triple and quad-mode patch resonators","authors":"Ke Gong, Sensen Ma, Chunfeng Fan, Jintu Sun, Jiahui Han, Yan Liu, Qing Liu","doi":"10.1049/mia2.12417","DOIUrl":"https://doi.org/10.1049/mia2.12417","url":null,"abstract":"The authors propose miniaturised single-layer bandpass filters (BPFs) by utilising a kind of new triple- and quad-mode patch resonators. The triple-mode resonator consists of a shortened square patch and a loaded metallic via at the centre. Characteristics of the new resonator are studied based on the mode analysis, and the first three resonant modes can be controlled well by changing the length of four via arms and the width of the open slot. Thus, a three-pole BPF can be designed with the new triple-mode patch resonator. To realise higher-order filter, two triple-mode patch resonators are cascaded to design a six-pole BPF. Moreover, an inter-digital slot-line is further etched on the triple-mode patch resonator to achieve a new resonant mode, and a quad-mode patch resonator is achieved without increasing its size. A miniaturised four-pole BPF is implemented using the quad-mode patch resonator. For the demonstration, three-pole triple-mode, six-pole triple-mode and four-pole quad-mode patch filters are designed, fabricated and measured. The measured results are in good agreement with the simulated ones.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"17 13","pages":"1015-1022"},"PeriodicalIF":1.7,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50152539","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 single-layered balanced filtering crossover with high selectivity based on square patch resonator 基于方形贴片谐振器的高选择性单层平衡滤波交叉

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-14 DOI: 10.1049/mia2.12406

Yi Li, Jianpeng Wang, Lei Zhu, Wen Wu

{"title":"A single-layered balanced filtering crossover with high selectivity based on square patch resonator","authors":"Yi Li, Jianpeng Wang, Lei Zhu, Wen Wu","doi":"10.1049/mia2.12406","DOIUrl":"https://doi.org/10.1049/mia2.12406","url":null,"abstract":"A new design of single-layered balanced filtering crossover with high selectivity based on square patch resonator is proposed. Originated from the degenerate modes, that is, TM12 and TM21 on square patch resonators, the feasibility of intrinsic common-mode (CM) suppression and channel isolation is conceived. For demonstration, a first-order balanced crossover prototype is designed. Afterwards, to enhance selectivity, a square patch resonator is subtly divided into two identical parts and then introduced into the prototype. Hence, a balanced filtering crossover with a fifth-order Chebyshev response is formed. Furthermore, stubs are deployed between adjacent patch resonators to introduce mixed couplings. Thus, two controllable transmission zeros are obtained, and better out-of-band suppression is achieved. Ultimately, the proposed crossover is fabricated and measured. High performance in terms of differential-mode filtering response, in-band CM suppression and channel isolation demonstrates the feasibility of the proposed method.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"17 13","pages":"974-981"},"PeriodicalIF":1.7,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12406","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50133299","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

All-dielectric circularly polarised loop antenna made of high-permittivity ceramic/water 由高导磁陶瓷/水制成的全介质圆极化环形天线

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-12 DOI: 10.1049/mia2.12416

Fei Fan, Wen Zheng, Feng Zhang, Changzhou Hua, Zai-Cheng Guo, Yin Li, Shiyan Wang

{"title":"All-dielectric circularly polarised loop antenna made of high-permittivity ceramic/water","authors":"Fei Fan, Wen Zheng, Feng Zhang, Changzhou Hua, Zai-Cheng Guo, Yin Li, Shiyan Wang","doi":"10.1049/mia2.12416","DOIUrl":"10.1049/mia2.12416","url":null,"abstract":"A kind of all-dielectric circularly polarised (CP) loop antenna made of high-permittivity material is proposed. The leaky-wave radiation from a high-permittivity dielectric waveguide is utilised here to support the operation of the proposed antenna. A non-closed dielectric loop covering a three-quarter circle is adopted to generate CP radiation and it is connected with the dielectric ground via one of bending ends to form an all-in-one structure of the antenna. The other end is also bent and vertical to the ground, but hanging in the air for probe feed. As two kinds of typical high-permittivity dielectric materials, zirconia ceramic and pure water are used to implement the proposed design respectively. On one hand, an all-ceramic CP loop antenna made of zirconia is proposed. And benefiting from the low loss and high melting point of zirconia, the proposed ceramic antenna has superiority in radiation efficiency and could adapt to a harsh environment. On the other hand, by using pure water and transparent container, a fully-transparent CP water loop antenna can be obtained. Finally, a 3-D printing technology is adopted in the manufacturing of ceramic structure and resin container. Measured results of both antennas demonstrate the validity of the proposed design.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"18 4","pages":"203-210"},"PeriodicalIF":1.7,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12416","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135879196","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

Improved hybrid discretisation of volume integral equation with the characteristic basis function method for analysing scattering from complex dielectric objects 用特征基函数法改进体积积分方程的混合离散化方法分析复杂介质散射

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-11 DOI: 10.1049/mia2.12414

Fei Huang, Yufa Sun, Ming Li, Dalei Wang

{"title":"Improved hybrid discretisation of volume integral equation with the characteristic basis function method for analysing scattering from complex dielectric objects","authors":"Fei Huang, Yufa Sun, Ming Li, Dalei Wang","doi":"10.1049/mia2.12414","DOIUrl":"https://doi.org/10.1049/mia2.12414","url":null,"abstract":"The improved hybrid discretisation of volume integral equation (VIE) combined with the characteristic basis function method is proposed to analyse the scattering from complex dielectric objects in this study. To mitigate the excessive number of discrete elements which arise from the conformal discretisation on the complex dielectric objects, the hybrid discretisation is developed. For the conventional hybrid discretisation, the conformal Schaubert–Wilton–Glisson (SWG) basis functions are used to discretise the homogeneous regions, meanwhile, the non-conformal half-SWG basis functions are employed to discretise the boundary regions which separate different materials or multiscale structures. The hybrid discretisation takes advantage of the merits of both conformal and non-conformal basis functions and improves the computational efficiency for solving the VIE. In our study, a kind of edge basis function defined within boundary tetrahedral elements substitutes for the SWG basis functions to model the boundary regions, leading to the further reduction on the number of basis functions. Moreover, the characteristic basis functions extracted from the low-level basis functions are employed to construct the reduced matrix of which the size is considerably smaller than that of the system matrix derived from the VIE. Several numerical results are presented to demonstrate the accuracy and efficiency of the proposed method.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"17 13","pages":"990-998"},"PeriodicalIF":1.7,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12414","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50129564","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

Compact hybrid eighth-mode substrate integrated waveguide and microstrip line filters with mixed electric and magnetic coupling 具有混合电耦合和磁耦合的紧凑混合八模衬底集成波导和微带线滤波器

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-08 DOI: 10.1049/mia2.12409

Xiang Wang, Qian-Wen Liu, Xian-Long Yang, Huangyan Li, Xiao-Wei Zhu, Wen Wu

{"title":"Compact hybrid eighth-mode substrate integrated waveguide and microstrip line filters with mixed electric and magnetic coupling","authors":"Xiang Wang, Qian-Wen Liu, Xian-Long Yang, Huangyan Li, Xiao-Wei Zhu, Wen Wu","doi":"10.1049/mia2.12409","DOIUrl":"https://doi.org/10.1049/mia2.12409","url":null,"abstract":"This paper proposes a new type of hybrid eighth-mode substrate integrated waveguide (EMSIW) and microstrip line (MSL) bandpass filter (BPF) with mixed electric and magnetic coupling. Firstly, two second-order EMSIW BPFs with mixed coupling and wide stopband performance are investigated. Then, in order to realise high-order BPF with decent performance, half-wavelength (λ/2) open-circuited MSL resonators are employed in the hybrid BPFs design. In the end, two third-order BPFs and a fourth-order BPF are developed by combining the EMSIW and MSL resonators together. Extra transmission zeros can be introduced due to the cross couplings in the trisection and quadruplet topologies. For demonstration, the proposed prototypes are designed, fabricated and measured. Reasonable agreements can be achieved between the measurement and simulation. The proposed third-order BPFs compete against the state of the art, exhibiting the competitive characteristics of the operating bandwidth, physical footprint and upper-stopband rejection with less order. The proposed fourth-order BPF features a compact size of 0.34 × 0.34λ0, a low insertion loss of 1 dB, a broad 3-dB fractional bandwidth of 22.9% and an excellent lower-stopband suppression.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"17 12","pages":"931-939"},"PeriodicalIF":1.7,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12409","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50125701","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

3D metal printed slot antenna array with high gain and enhanced bandwidth using triple-mode sine corrugated cavity resonator 基于三模正弦波纹腔谐振器的高增益、高带宽三维金属印刷缝隙天线阵列

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-05 DOI: 10.1049/mia2.12410

Jiayu Rao, Kenneth Nai, Povilas Vaitukaitis, Yuepei Li, Jiasheng Hong

引用次数: 0

Sub-array level structural compensation method for radiating and scattering performance of array antennas 阵列天线辐射和散射性能的子阵列级结构补偿方法

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-05 DOI: 10.1049/mia2.12405

Yan Wang, Biaolin Yan, Rong Yu, Mengmeng Fan, Zhongxing Duan, Zongfa Ma, Hongping Fu, Zhihai Wang, Kunpeng Yu, Wenzhi Wu, Congsi Wang

{"title":"Sub-array level structural compensation method for radiating and scattering performance of array antennas","authors":"Yan Wang, Biaolin Yan, Rong Yu, Mengmeng Fan, Zhongxing Duan, Zongfa Ma, Hongping Fu, Zhihai Wang, Kunpeng Yu, Wenzhi Wu, Congsi Wang","doi":"10.1049/mia2.12405","DOIUrl":"https://doi.org/10.1049/mia2.12405","url":null,"abstract":"The detection and stealth abilities of array antennas depend mainly on the antennas' radiating and scattering performance, respectively. However, the operating environmental loads and assembly lead to serious structural errors, including deformation and random errors, which affect both the radiating and scattering performance. As the demand to guarantee high performance in detection as well as in stealth, a new sub-array level structural compensation method is presented to simultaneously guarantee the radiating and scattering performance of array antennas in service. First, a statistical model of scattering performance with structural deformation and random position error is established to quickly evaluate the impact of a random structural error on scattering performance. Then, the effects of structural errors in different directions on radiating and scattering performance are analysed to determine the structural adjustment direction. Moreover, the multi-objective problem considering the comprehensive compensation of radiating and scattering performance is converted into a single-object problem by constructing a fitness function to realise the sub-array level structural compensation. Finally, a typical case is used to verify the effectiveness of the compensation method. The results show that the presented method can guarantee both the radiating and scattering performance effectively, providing advantageous guidance for structural design and performance compensation for array antennas.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"17 12","pages":"940-954"},"PeriodicalIF":1.7,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12405","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50132616","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

Diagnosis of subarray-structured base station antennas in a compact setup based on solving linear equations 基于线性方程组求解的紧凑型子阵列结构基站天线的诊断

IF 1.7 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2023-09-04 DOI: 10.1049/mia2.12390

Mengting Li, Fengchun Zhang, Wei Fan

{"title":"Diagnosis of subarray-structured base station antennas in a compact setup based on solving linear equations","authors":"Mengting Li, Fengchun Zhang, Wei Fan","doi":"10.1049/mia2.12390","DOIUrl":"https://doi.org/10.1049/mia2.12390","url":null,"abstract":"Since the total number of the antenna elements can be up to hundreds in a massive multiple-input multiple-output (MIMO) system, subarray-structured base station (BS) array configurations are widely adopted to achieve a good cell coverage and to reduce the required number of radio frequency chains at the same time. It is crucial for any BS product to ensure that the antenna elements perform correctly as expected. Therefore, the necessity of array diagnosis is evident, especially for large BS arrays. Furthermore, it is essential that the diagnosis can be achieved in a compact and cost-effective setup with high measurement efficiency (i.e. only a few measurement samples are required). The principle of the diagnosis method presented in this article is to obtain the S-parameters between the subarrays and the probe via solving linear equations. In the simulation, a BS array composed of 16 subarrays with each containing 3 elements is used to validate the diagnosis method at 3.5 GHz. An array composed of 4 subarrays with each containing 3 elements was used in the measurements to verify the diagnosis method with two different phase tuning matrices at 3 GHz. Successful diagnosis results have been achieved in both the simulations and the measurements.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"17 12","pages":"920-930"},"PeriodicalIF":1.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12390","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50121193","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