Iet Microwaves Antennas & Propagation最新文献

{"title":"An On-Chip Elliptic Bandpass Filter With High Selectivity and High Stopband Attenuation Near the Passband Based on Stacked Series-Parallel Topology","authors":"Hao-Ran Zhu,&nbsp;Lv-Bo Ma,&nbsp;Laifu Jin,&nbsp;Hongqing Pan,&nbsp;Shijin Wang","doi":"10.1049/mia2.70089","DOIUrl":"https://doi.org/10.1049/mia2.70089","url":null,"abstract":"<p>In this paper, a high selectivity integrated passive device (IPD) on-chip bandpass filter is presented. The passband can be constructed by using a minimum number of three-order elliptic bandpass filter. The stacked series-parallel topology is employed to generate two transmission zeros (TZs) and a transmission pole (TP) to maintain high selectivity and high stopband attenuation near the passband. Moreover, in order to deep the attenuation level at the upper stopband, a zero-pole generation circuit is introduced at the input and output ports to generate a TZ and a TP, which can also adjust the flatness of the passband and improve the impedance matching. An IPD on-chip filter sample is fabricated with an electric length of 0.12 × 0.05 λg². The measurement results show that the centre frequency is 4.2 GHz, the fractional bandwidth is 78.6%, the minimum in-band insertion loss is 1.23 dB, and the frequency selectivity SF_20dB and SF_30dB are 1.31 and 1.39, respectively.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147665966","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}

{"title":"Multiband Radome Design for Satellite Communication Based on Particle Swarm Optimization","authors":"Olga Basile,&nbsp;Marco Simone,&nbsp;Santi C. Pavone,&nbsp;Gino Sorbello","doi":"10.1049/mia2.70092","DOIUrl":"10.1049/mia2.70092","url":null,"abstract":"<p>Radomes play a fundamental role in protecting antenna systems deployed in outdoor environments while preserving their electromagnetic performance. Due to their direct interaction with the radiated field, both structural and electromagnetic properties must be carefully engineered. This paper introduces a design methodology for advanced multilayer radomes intended for high-performance satellite communication systems, ensuring broadband transparency and compactness. As a case study, we consider several sub-bands spanning from 7.2 to 31 GHz and covering a broad range of incidence angles for both transverse-electric (TE) and transverse-magnetic (TM) polarizations. The proposed approach employs a particle swarm optimization algorithm to maximize transmission within the specified frequency bands by optimally adjusting layer thicknesses while accurately modelling the frequency-dispersive permittivity of the selected materials. This process yields a lightweight, high-transparency radome design suitable for multiband operation. The methodology was validated through full-wave simulations across six frequency bands using realistic dispersive materials. Results show excellent agreement between analytical and numerical models, with tolerance analysis confirming robustness against manufacturing deviations. The proposed framework demonstrates strong potential for the systematic design of next-generation multilayer radomes meeting the stringent requirements of modern satellite communication systems.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147563700","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}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148068385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a Dual-Polarised Wide-Band Stacked-Patch Array for Ku Band Satcom On-the-Move","authors":"Davide Guarnera,&nbsp;Marco Simone,&nbsp;Antonella M. Loconsole,&nbsp;Md. Imran Khan,&nbsp;Francesco Anelli,&nbsp;Santi C. Pavone,&nbsp;Francesco Prudenzano,&nbsp;Gino Sorbello","doi":"10.1049/mia2.70081","DOIUrl":"10.1049/mia2.70081","url":null,"abstract":"<p>In this paper, we present the design of a high-performance dual-linearly polarised broadband stacked <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>2</mn>\u0000 <mo>×</mo>\u0000 <mn>2</mn>\u0000 </mrow>\u0000 <annotation> $2times 2$</annotation>\u0000 </semantics></math> patch antenna array for SATCOM on-the-move applications. The antenna has been designed to operate in the <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>[</mo>\u0000 <mrow>\u0000 <mn>10.7</mn>\u0000 <mo>−</mo>\u0000 <mn>14.5</mn>\u0000 </mrow>\u0000 <mo>]</mo>\u0000 </mrow>\u0000 <annotation> $[10.7-14.5]$</annotation>\u0000 </semantics></math> GHz frequency range, covering both the receiving and transmitting SOTM Ku bands, namely, <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>[</mo>\u0000 <mrow>\u0000 <mn>10.7</mn>\u0000 <mo>−</mo>\u0000 <mn>12.75</mn>\u0000 </mrow>\u0000 <mo>]</mo>\u0000 </mrow>\u0000 <annotation> $[10.7-12.75]$</annotation>\u0000 </semantics></math> GHz and <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>[</mo>\u0000 <mrow>\u0000 <mn>13.75</mn>\u0000 <mo>−</mo>\u0000 <mn>14.5</mn>\u0000 </mrow>\u0000 <mo>]</mo>\u0000 </mrow>\u0000 <annotation> $[13.75-14.5]$</annotation>\u0000 </semantics></math> GHz, respectively. The array, excited with a feeding system leveraging two perpendicular corporate feeding networks, enables electronically reconfiguration of two orthogonal linear polarisations, which can be combined to synthesise other polarisation states, such as circular. The proposed design targets of robustness, reliability and simplicity have been validated through experimental characterisation, showing a good agreement when compared against full-wave electromagnetic simulations.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666128","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}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148095033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-Wideband Coupled-Fed Loop Antenna Pair for 5G Mobile Terminals","authors":"Aidi Ren,&nbsp;Wenyi Song,&nbsp;Zhanhao Zhang,&nbsp;Ying Liu,&nbsp;Lixia Yang,&nbsp;Yingsong Li,&nbsp;Zhixiang Huang","doi":"10.1049/mia2.70088","DOIUrl":"10.1049/mia2.70088","url":null,"abstract":"<p>This paper presents an ultra-wideband (UWB) antenna pair for 5G mobile terminals. The antenna pair is composed of two coupled-fed loop antennas with a common shorted branch, which achieves a compact size. The wideband operation is obtained by meticulously exciting two-loop modes. Due to the common shorted branch, a good isolation level (&gt; 10 dB) is acquired. Based on four coupled-fed loop antenna pairs, an ultra-wideband 8 × 8 multiple-input multiple-output (MIMO) array with compact size is conducted and measured. The experimental results show that the MIMO array covers 3.3–7.8 GHz with a relative bandwidth of 81.08%, and the isolation between ports is better than 10 dB. In addition, the measured radiation pattern, total efficiency and ECCs (envelope correlation coefficients) are also discussed.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666157","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}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148087169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geometric Phase Metasurface for Lens Antenna System With High Polarisation Purity and Efficiency","authors":"Alexia Moreno-Peñarrubia,&nbsp;Sheyly Ortiz-Reyes,&nbsp;Jorge Teniente,&nbsp;Sergei Kuznetsov,&nbsp;Bakhtiyar Orazbayev,&nbsp;Miguel Beruete","doi":"10.1049/mia2.70090","DOIUrl":"10.1049/mia2.70090","url":null,"abstract":"<p>This work presents a millimetre-wave antenna–metalens system based on the Pancharatnam–Berry phase principle. The setup includes a circularly polarised horn antenna combined with bi-layer metalens optimised for 87 GHz operation. This arrangement achieves an axial ratio (AR) of 0.5 dB, directivity up to 34.7 dB–surpassing the original horn antenna over 17 dB–an aperture efficiency of 47% and exhibits a narrow beamwidth. The system operates from 82 to 95 GHz with an AR below 2 dB, directivity over 32 dB and aperture efficiency exceeding 30%. Additionally, the same metalens is characterised at 75 and 105 GHz, where the focal shift associated with frequency scaling is observed, yet directivity remains around 32 dB and AR below 3 dB. Notably, the aperture efficiency remains approximately 30% for the full frequency range, demonstrating the inherent frequency tolerance of the Pancharatnam–Berry phase implementation.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70090","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147300019","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}

{"title":"A 3D Non-Stationary Wideband GBSM for Low-Altitude UAV Channels in Rail Environments","authors":"Cheng Li,&nbsp;Kunye Hong,&nbsp;Jingjing Du,&nbsp;Yating Gao,&nbsp;Pei Tang,&nbsp;Lei Xiong","doi":"10.1049/mia2.70084","DOIUrl":"10.1049/mia2.70084","url":null,"abstract":"<p>In recent years, low-altitude unmanned aerial vehicles (UAVs) have attracted more and more attention across various fields. Accurate channel modelling is critical for the design and performance evaluation of low-altitude UAV communication systems, making it an emerging research hotspot. This paper presents a three-dimensional (3D) wideband non-stationary Geometry-Based Stochastic Channel Model (GBSM) for low-altitude UAV communications. Distinct from existing modelling frameworks, the proposed model integrates air-to-air (A2A) and air-to-ground (A2G) scenarios into a generalised channel model. Moreover, a two-state continuous-time Markov process is employed to characterise the dynamic behaviours of scattering cluster birth and death. And key statistical properties, including space-time-frequency correlation and Doppler power spectral density (DPSD), are derived to quantify the channel model. To address computational complexity challenges, a corresponding simulation model is further developed. Simulation results verify that the proposed model effectively captures the channel behaviours of low-altitude UAV communication systems.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147268926","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}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148070595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}