Iet Microwaves Antennas & Propagation最新文献

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Compact Wideband Filtering Monopole Antenna Using Characteristic Mode Analysis 基于特征模态分析的紧凑型宽带滤波单极天线
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2026-01-21 DOI: 10.1049/mia2.70083
Guang Li, Bingnan Wang, Shilin Yang, Fan Zhang, Yuchen Luan, Fushun Zhang
{"title":"Compact Wideband Filtering Monopole Antenna Using Characteristic Mode Analysis","authors":"Guang Li, Bingnan Wang, Shilin Yang, Fan Zhang, Yuchen Luan, Fushun Zhang","doi":"10.1049/mia2.70083","DOIUrl":"https://doi.org/10.1049/mia2.70083","url":null,"abstract":"<p>A compact wideband filtering monopole antenna is presented using characteristic mode analysis (CMA). The antenna integrates a <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>Γ</mi>\u0000 </mrow>\u0000 <annotation> ${Gamma }$</annotation>\u0000 </semantics></math>-shaped monopole arm and a folded monopole arm on a common ground plane. The <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>Γ</mi>\u0000 </mrow>\u0000 <annotation> ${Gamma }$</annotation>\u0000 </semantics></math>-shaped monopole supports a <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>λ</mi>\u0000 </mrow>\u0000 <annotation> $lambda $</annotation>\u0000 </semantics></math>/4 mode, whereas the folded monopole compresses a 3<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>λ</mi>\u0000 </mrow>\u0000 <annotation> $lambda $</annotation>\u0000 </semantics></math>/4 mode towards a <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>λ</mi>\u0000 </mrow>\u0000 <annotation> $lambda $</annotation>\u0000 </semantics></math>/4 mode. The antenna yields a trimode response. Mode decomposition of the antenna modes onto substructure modes shows that two <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>λ</mi>\u0000 </mrow>\u0000 <annotation> $lambda $</annotation>\u0000 </semantics></math>/4 modes and a 3<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>λ</mi>\u0000 </mrow>\u0000 <annotation> $lambda $</annotation>\u0000 </semantics></math>/4 mode produce radiation nulls in the lower and upper bands, enabling intrinsic filtering without external structures. The prototype achieves a 48.3% impedance bandwidth (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>|</mo>\u0000 <msub>\u0000 <mi>S</mi>\u0000 <mn>11</mn>\u0000 </msub>\u0000 <mo>|</mo>\u0000 <mo>≤</mo>\u0000 </mrow>\u0000 <annotation> $vert {S}_{11}vert le $</annotation>\u0000 </semantics></math> −10 dB). The antenna has a compact size of 0.354<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>λ</mi>\u0000 <mn>0</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation> ${lambda }_{0}$</annotation>\u0000 </semantics></math> <span></span><math>\u0000 <semantics>\u0000 ","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146083410","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 and Experimental Validation of Pattern and Frequency Reconfigurable Central Plasma Antenna Array 方向和频率可重构中央等离子体天线阵列的设计与实验验证
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2026-01-11 DOI: 10.1049/mia2.70065
Manisha Jha, Nisha Panghal, A. K. Pandey, Unnati Patel, Rajesh Kumar, Surya K. Pathak
{"title":"Design and Experimental Validation of Pattern and Frequency Reconfigurable Central Plasma Antenna Array","authors":"Manisha Jha,&nbsp;Nisha Panghal,&nbsp;A. K. Pandey,&nbsp;Unnati Patel,&nbsp;Rajesh Kumar,&nbsp;Surya K. Pathak","doi":"10.1049/mia2.70065","DOIUrl":"https://doi.org/10.1049/mia2.70065","url":null,"abstract":"<p>The study presents the design and development of a plasma-based antenna array system for the UHF band. The system features an omnidirectional plasma antenna as its active radiator, a novel approach that has not been previously explored. Surrounding plasma reflectors around the plasma antenna form a reconfigurable array. The plasma antenna is the only radiating element in the array, whereas the surrounding plasma reflectors enhance the gain and directivity of the array, facilitating beam shaping and steering. This new design creates a fully plasma based system enabling dual reconfigurability in frequency and radiation pattern. Electronic beam scanning is possible in the azimuthal plane from 0° to 360° in 18° steps. The resonance frequency of the array is optimised to 820 MHz, resulting in a significant increase in plasma antenna gain from −5 to 0 dB within the operating frequency range. Activating the plasma reflectors reduces cross polarisation by 20 dB. The proposed array achieves a 25 dB front-to-back ratio and a bandwidth of 600 MHz. The array's RCS varies from 6 <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mtext>dBm</mtext>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation> ${text{dBm}}^{2}$</annotation>\u0000 </semantics></math> to <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>−</mo>\u0000 <mn>30</mn>\u0000 </mrow>\u0000 <annotation> ${-}30$</annotation>\u0000 </semantics></math> <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mtext>dBm</mtext>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation> ${text{dBm}}^{2}$</annotation>\u0000 </semantics></math> over the 1–12 GHz range, rendering it invisible from 8 to 12 GHz. This plasma-based array is suitable for radar, defence and navigation systems.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146007498","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
Fast Filter-Antenna Design Method Accelerated With Physical-Inspired AI-Driven Forward Solver 基于物理启发的ai驱动前向求解器的快速滤波天线设计方法
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2026-01-09 DOI: 10.1049/mia2.70082
Xingyi Liu, Feiyu Yang, Haoqian Deng, Kuiwen Xu, Yanyang Wang, Ning Xu, Hang Yang, Qingfeng Zhang
{"title":"Fast Filter-Antenna Design Method Accelerated With Physical-Inspired AI-Driven Forward Solver","authors":"Xingyi Liu,&nbsp;Feiyu Yang,&nbsp;Haoqian Deng,&nbsp;Kuiwen Xu,&nbsp;Yanyang Wang,&nbsp;Ning Xu,&nbsp;Hang Yang,&nbsp;Qingfeng Zhang","doi":"10.1049/mia2.70082","DOIUrl":"https://doi.org/10.1049/mia2.70082","url":null,"abstract":"<p>To meet various customised requirements for RF devices efficiently, a fast artificial intelligence (AI)-driven design method is proposed using a physically inspired forward solver with coupling matrix via the artificial neural network (ANN). Establishing the space mapping from the coarse model to the fine model through ANN enables the rapid and accurate acquisition of a large number of S-parameters of the filter under different geometric parameters. To improve the construction efficiency and performance of the forward solver, the mutual coupling matrix of the resonator (<i>M</i> matrix) is extracted from the S-parameters obtained as input of the surrogated model, which exhibits better robustness, convergence and training efficiency. Furthermore, by integrating with the AI-driven forward solver, the performance of the RF devices could be efficiently optimised according to the requirements with the heuristic algorithms. Simulation, comparison and experimental results all demonstrate that the designed RF filters and filter antennas accordingly exhibit high efficiency and excellent prediction accuracy at various operating frequencies and bandwidths, thus proving the effectiveness and practicality of the proposed optimisation method.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70082","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987175","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 Feasibility Study to Practically Implement a High-Performance Circularly Polarised Antenna Array for Point-to-Point Wireless Communication 点对点无线通信高性能圆极化天线阵列的可行性研究
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2026-01-02 DOI: 10.1049/mia2.70078
Mahdi Parvaneh, Hassan Zakeri, Gholamreza Moradi, Mohammad Alibakhshikenari, Bandar Alshammari, Chan Hwang See, Bal Virdee, Symon K. Podilchak, Ernesto Limiti
{"title":"A Feasibility Study to Practically Implement a High-Performance Circularly Polarised Antenna Array for Point-to-Point Wireless Communication","authors":"Mahdi Parvaneh,&nbsp;Hassan Zakeri,&nbsp;Gholamreza Moradi,&nbsp;Mohammad Alibakhshikenari,&nbsp;Bandar Alshammari,&nbsp;Chan Hwang See,&nbsp;Bal Virdee,&nbsp;Symon K. Podilchak,&nbsp;Ernesto Limiti","doi":"10.1049/mia2.70078","DOIUrl":"https://doi.org/10.1049/mia2.70078","url":null,"abstract":"<p>This article presents the design, fabrication and experimental validation of a compact linear series-fed microstrip antenna array with dual circular polarisation (CP) capability. The proposed structure consists of a <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>4</mn>\u0000 <mo>×</mo>\u0000 <mn>4</mn>\u0000 </mrow>\u0000 <annotation> $4times 4$</annotation>\u0000 </semantics></math> slotted circular patch array excited via four microstrip lines using a coplanar proximity coupling technique. Dual-CP operation is achieved through two miniaturised and distinct microstrip power divider networks, enabling the generation of either left-hand or right-hand CP based on the excitation port. To maximise gain and efficiency, the design reduces feedline branching and employs optimised slotted patch elements, resulting in low power loss and high radiation efficiency. The antenna achieves a realised peak gain of 19.4 dBic across 12.2–12.7 GHz and a 3-dB axial ratio bandwidth from 11.9 to 13.1 GHz. Simulation and measurement results demonstrate excellent agreement. Thanks to its compact size, wide bandwidth, dual-CP functionality and high gain, the proposed antenna offers a promising solution for point-to-point wireless communication systems. Compared to existing multi- and single-layer microstrip-based CP arrays, this work introduces a simplified feed structure and improved performance, demonstrating clear advancement in antenna array design.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145891406","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
Coding 1-Bit Programmable Metasurface Based on Bayesian Learning With a Hierarchical Truncated Gaussian Mixture Prior Model 基于分层截断高斯混合先验模型贝叶斯学习的1位可编程元表面编码
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2025-12-30 DOI: 10.1049/mia2.70079
Fang-Fang Wang, Yiqian Mao, Qing Huo Liu
{"title":"Coding 1-Bit Programmable Metasurface Based on Bayesian Learning With a Hierarchical Truncated Gaussian Mixture Prior Model","authors":"Fang-Fang Wang,&nbsp;Yiqian Mao,&nbsp;Qing Huo Liu","doi":"10.1049/mia2.70079","DOIUrl":"https://doi.org/10.1049/mia2.70079","url":null,"abstract":"<p>Emerging programmable metasurface technologies enable flexible manipulation of electromagnetic waves. However, the instantaneous design of corresponding code sequences remains a challenging problem. In this paper, a fast and reliable coding strategy for 1-bit programmable metasurfaces is proposed. Under the assumption that the reflection amplitudes for both ‘0’ and ‘1’ coding states are equal to unity, the original coding problem is first formulated as a linear inverse problem. Since the phase difference between ‘0’ and ‘1’ coding states is approximately <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>π</mi>\u0000 </mrow>\u0000 <annotation> ${uppi }$</annotation>\u0000 </semantics></math>, such <i>a prior</i> information is then exploited for addressing the linear inverse problem. Specifically, a hierarchical truncated Gaussian mixture (TGM) prior model is adopted to account for the feature of the unknowns. Moreover, the variational expectation maximisation (VEM) along with the generalised approximate message passing (GAMP) is used for Bayesian inference, significantly reducing the computational complexity. Several numerical examples are presented to illustrate the potential of the proposed coding scheme.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145891642","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 Wide-Band Multisection Wilkinson Power Divider Based on RGW for X- and Ku-Band Applications X波段和ku波段应用中基于RGW的宽带多段威尔金森功率分配器
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2025-12-23 DOI: 10.1049/mia2.70070
Reza Afroozeh, Gholamreza Dadashzadeh, Mahdi Khoshhali Roudposhti
{"title":"The Wide-Band Multisection Wilkinson Power Divider Based on RGW for X- and Ku-Band Applications","authors":"Reza Afroozeh,&nbsp;Gholamreza Dadashzadeh,&nbsp;Mahdi Khoshhali Roudposhti","doi":"10.1049/mia2.70070","DOIUrl":"10.1049/mia2.70070","url":null,"abstract":"<p>This paper presents the design, simulation and fabrication of a wideband <i>Wilkinson power divider</i> (WPD) based on <i>ridge gap waveguide</i> (RGW) technology for operation in the X- and Ku-band frequency range (8–18 GHz). This paper describes the theoretical foundation and design process of the RGW power divider, followed by the development of the overall divider in two configurations: waveguide-fed and coaxial fed. Optimisation techniques were utilised to finalise the divider for fabrication and testing. Challenges in designing waveguide transitions using multiple structural configurations are discussed. The final divider was tested and validated with measurement. Results indicate that <i>S</i><sub>11</sub>, <i>S</i><sub>22</sub> and S<sub>33</sub> are below −10 dB, output port isolation (<i>S</i><sub>23</sub> and <i>S</i><sub>32</sub>) is below −15 dB and transmission coefficients (<i>S</i><sub>21</sub> and <i>S</i><sub>31</sub>) are approximately −3.5 dB. In the final simulation process, the optimal values of the isolation resistors were determined based on both software-based and theoretical methods. Moreover, by evaluating the maximum electric field in the RGW structure, a higher estimated average power-handling capability was obtained compared with other technologies.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145825203","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
Low NF Active Quasi-Circulator Design Based on Noise Suppression Technique 基于噪声抑制技术的低NF有源准环行器设计
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2025-12-18 DOI: 10.1049/mia2.70075
Zhan Chen, Chunxia Zhou, Wen Wu
{"title":"Low NF Active Quasi-Circulator Design Based on Noise Suppression Technique","authors":"Zhan Chen,&nbsp;Chunxia Zhou,&nbsp;Wen Wu","doi":"10.1049/mia2.70075","DOIUrl":"10.1049/mia2.70075","url":null,"abstract":"<p>In this paper, an active quasi-circulator (QC) exhibiting a low noise figure (NF) of 1.1 dB is presented, which is composed of two couplers, three connecting transmission lines (TLs) and a nonreciprocal stage. High isolation between transmitter (Tx) and receiver (Rx) ports can be obtained through two-path signal cancelation by precisely designing the amplitude and phase of the nonreciprocal stage, which is realised by an amplifier. To reduce the additional noise introduced by the amplifier, a noise suppression technique that exploits the inherent isolation of the coupler is employed. A QC is designed to validate our design approach, which achieves an operating bandwidth of 1.82–1.96 GHz with &gt; 20-dB Tx–Rx isolation, a minimum in-band Tx-antenna (Ant) IL of 2.6 dB, an Ant-Rx IL of 0.9 dB and a NF of 1.1 dB.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824720","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
Single-Layer Fourth-Order SIW Filtering Antenna With Controllable Radiation Nulls 具有可控辐射零点的单层四阶SIW滤波天线
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2025-12-13 DOI: 10.1049/mia2.70074
Yun-Qiu Li, Shi-Shan Qi, Shu-Yang Wan, Wen Wu
{"title":"Single-Layer Fourth-Order SIW Filtering Antenna With Controllable Radiation Nulls","authors":"Yun-Qiu Li,&nbsp;Shi-Shan Qi,&nbsp;Shu-Yang Wan,&nbsp;Wen Wu","doi":"10.1049/mia2.70074","DOIUrl":"10.1049/mia2.70074","url":null,"abstract":"<p>This paper proposes a filtering antenna utilising single-layer substrate-integrated waveguide (SIW) dual-mode cavities for 5G millimetre-wave user equipment. The first dual-mode cavity operates in TE<sub>110</sub> and TE<sub>210</sub> modes, generating a radiation null (RN) above the passband through cross-coupling, whereas the two hybrid modes of the other dual-mode cavity, excited together through a long slot, introduce another RN below the passband. The positions of two RNs can be independently controlled without an extra filtering circuit. The proposed single-layer fourth-order filtering antenna, designed with a centre frequency of 24.7 GHz, an impedance bandwidth of 5.67% and a maximum gain of 6.63 dBi, is well suited for 5G millimetre-wave systems. The measured results show a high degree of consistency with the simulated results.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824645","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
Circularly Polarised Stacked Patch Antennas for X-Band Uplink/Downlink CubeSat Communication Systems 面向x波段上行/下行链路立方体卫星通信系统的圆极化堆叠贴片天线
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2025-12-10 DOI: 10.1049/mia2.70072
Muhammad Mubasshir Hossain, Syed Salman Kabir, Saeed I. Latif
{"title":"Circularly Polarised Stacked Patch Antennas for X-Band Uplink/Downlink CubeSat Communication Systems","authors":"Muhammad Mubasshir Hossain,&nbsp;Syed Salman Kabir,&nbsp;Saeed I. Latif","doi":"10.1049/mia2.70072","DOIUrl":"10.1049/mia2.70072","url":null,"abstract":"<p>In this article, multiple circularly polarised (CP) stacked patch antenna designs are proposed with different perturbation techniques that can be used in future CubeSat missions using NASA Near Earth Network (NEN) or Deep Space Network (DSN) ground stations. The stacked patches with different perturbations aim to optimise the axial ratio bandwidth of the antennas to cover both uplink and downlink frequency bands of NASA NEN/DSN. Combining the axial ratio bandwidth of the two stacked patches, proposed antennas can be made wideband or dual-band to replace multiple antenna systems for uplink and downlink communications. Proposed CP antennas provide the solution to overcome some of the major design challenges, such as antenna placement, limited space for solar cells and mass/volume constraints of CubeSats. The proposed antennas achieve axial ratio (AR) <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>&lt;</mo>\u0000 </mrow>\u0000 <annotation> ${&lt; } $</annotation>\u0000 </semantics></math> 3 dB bandwidths of 1.2–1.33 GHz (16%–17%) covering the X band uplink and downlink frequencies of NASA NEN. A dual-band antenna covering the uplink and downlink of NASA DSN is also achieved using the stacked patch antenna design. Alongside a wide axial ratio bandwidth, the antennas also offer a wide axial ratio beamwidth (maximum achieved <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>140</mn>\u0000 <mo>°</mo>\u0000 </mrow>\u0000 <annotation> $140{}^{circ}$</annotation>\u0000 </semantics></math>) and high RHCP gain (maximum 8.05 dBic gain achieved) RHCP gain. Results of the proposed designs were validated through prototype fabrication and measurements.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739405","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 and Analysis of a 2.45 GHz Microwave-Assisted Marble Drilling System With Near-Field Focused Radiation for Enhanced Material Processing 基于近场聚焦辐射的2.45 GHz微波辅助大理石钻孔系统设计与分析
IF 1.2 4区 计算机科学
Iet Microwaves Antennas & Propagation Pub Date : 2025-12-04 DOI: 10.1049/mia2.70061
Eser Can, Adnan Kaya, Ismail Akdag, Caner Murat, Irfan Kaya
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