Aeu-International Journal of Electronics and Communications最新文献_第5页

Synthesis, design, and fabrication of filters with dual/multiple dangling nodes 双/多悬垂节点滤波器的合成、设计与制造

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-26 DOI: 10.1016/j.aeue.2025.155785

A. Mostaani , Y. Wang , L. Qian , A.A. Mohamed , M.M. Attallah

引用次数: 0

Design of grid array antenna for N258 band short range radar and N261 band 5G applications N258波段近程雷达和N261波段5G应用网格阵列天线设计

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-26 DOI: 10.1016/j.aeue.2025.155784

Sriram Arumugam, Sangeetha Manoharan, Chitikela Charan, Nagisetty Harshini

引用次数: 0

DNG metamaterial loaded dual wideband MIMO antenna with mitigated mutual coupling for 5G n257/n258/n260/n261 NR networks 用于5G n257/n258/n260/n261 NR网络的DNG超材料加载双宽带MIMO天线

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-25 DOI: 10.1016/j.aeue.2025.155775

Ouafae Elalaouy , Mohammed EL Ghzaoui , Sudipta Das , Abeer D. Algarni , Boddapati Taraka Phani Madhav , Jaouad Foshi

{"title":"DNG metamaterial loaded dual wideband MIMO antenna with mitigated mutual coupling for 5G n257/n258/n260/n261 NR networks","authors":"Ouafae Elalaouy , Mohammed EL Ghzaoui , Sudipta Das , Abeer D. Algarni , Boddapati Taraka Phani Madhav , Jaouad Foshi","doi":"10.1016/j.aeue.2025.155775","DOIUrl":"10.1016/j.aeue.2025.155775","url":null,"abstract":"<div><div>A compact, efficient, dual wideband MIMO antenna with DNG metamaterial is designed for millimeter-wave 5G applications. The metamaterial has DNG (double negative) permittivity and permeability within dual resonance bands. The MIMO antenna without metamaterial configuration features two adjacent symmetric radiating elements with maximum corresponding isolation of <span><math><mo>-</mo></math></span> 29.05 and <span><math><mo>-</mo></math></span> 26.09 dB within the corresponding bands. To alleviate mutual coupling further, a metamaterial is optimally positioned amid the two elements on the substrate’s top surface, enhancing isolation to <span><math><mo>-</mo></math></span> 39.81 and <span><math><mo>-</mo></math></span> 42.81 dB. The antenna has a wide bandwidth of 10.43 GHz (20.22 - 30.65 GHz) for the first band and 7.23 GHz (35.27 - 42.5 GHz) for the second operating band. This compact antenna (26 mm <span><math><mo>×</mo></math></span> 14.5 mm) provides 5.5 and 5.2 dBi peak gains within respective bands. Additionally, the envelope correlation coefficient remains below 0.045 for the first band and 0.04 for the second, indicating robust diversity characteristics. As a result, the prescribed MTM-MIMO antenna proves to be a viable option for mm-wave applications, ensuring its compatibility with various 5G new radio (NR) frequency bands n257, n258, n260, and n261. This versatility facilitates its deployment in multiple countries, including Japan, Sweden, the EU, the US, South Korea, Canada, and Australia.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"195 ","pages":"Article 155775"},"PeriodicalIF":3.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact step-impedance coaxial bandpass filters by using stacked dielectric blocks 采用堆叠介质块的紧凑阶跃阻抗同轴带通滤波器

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-24 DOI: 10.1016/j.aeue.2025.155782

Ke-Lan Li, Wen-Ting Xu, Wei Huang, Wei Qin, Jian-Xin Chen

{"title":"Compact step-impedance coaxial bandpass filters by using stacked dielectric blocks","authors":"Ke-Lan Li, Wen-Ting Xu, Wei Huang, Wei Qin, Jian-Xin Chen","doi":"10.1016/j.aeue.2025.155782","DOIUrl":"10.1016/j.aeue.2025.155782","url":null,"abstract":"<div><div>This article proposes a novel coaxial step-impedance resonator (SIR) for the design of compact bandpass filter (BPF) with wide stopband. The proposed coaxial SIR is divided into two dielectric blocks for processing. At the bottom of the upper dielectric block, there is an ungrounded metallized blind hole, while at the center of the lower dielectric block, there is a metallized through-hole. The stack of the two dielectric blocks creates the proposed quarter-wavelength coaxial SIR, which not only features a compact size and light weight, but also exhibits a very high frequency ratio between the first spurious mode and the fundamental mode. Based on the coaxial SIR, a fourth-order BPF with a passband range from 2.515 GHz to 2.675 GHz was designed and measured. The dimensions of the BPF are 31 × 10 × 4.75 mm<sup>3</sup>, which is about 1.2<em>λ<sub>g</sub></em> × 0.4<em>λ<sub>g</sub></em> × 0.18<em>λ<sub>g</sub></em>. The measured return loss is better than 17 dB and the minimum in-band insertion loss is approximately 0.7 dB. The first harmonic appears at 6.03 GHz, which is approximately 2.33<em>f</em><sub>0</sub>. The proposed BPF features a small size and a wide stopband, making it a promising option for future communication base station applications.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"195 ","pages":"Article 155782"},"PeriodicalIF":3.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of an extremely wideband planar dipole antenna for Sub-3 GHz applications 一种用于sub - 3ghz应用的极宽带平面偶极子天线设计

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-24 DOI: 10.1016/j.aeue.2025.155774

D. Zarifi , M. Aslinezhad

引用次数: 0

Using Denoising Diffusion Probabilistic Models to solve the inverse sizing problem of analog Integrated Circuits 应用去噪扩散概率模型求解模拟集成电路的尺寸逆问题

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-21 DOI: 10.1016/j.aeue.2025.155767

Pedro Eid, Filipe Azevedo, Nuno Lourenço, Ricardo Martins

{"title":"Using Denoising Diffusion Probabilistic Models to solve the inverse sizing problem of analog Integrated Circuits","authors":"Pedro Eid, Filipe Azevedo, Nuno Lourenço, Ricardo Martins","doi":"10.1016/j.aeue.2025.155767","DOIUrl":"10.1016/j.aeue.2025.155767","url":null,"abstract":"<div><div>In this paper, we focus on using Artificial Neural Networks (ANNs), particularly diffusion models, to automate the sizing of analog Integrated Circuits (ICs), given the constraints of their performance metrics. Researchers have explored various automation methods, including meta-heuristics and optimization-based approaches, to address this challenge. However, each method presents distinct drawbacks and, at times, yields inefficient results. While studies have made some attempts using ANNs, they commonly face the hurdle of the ill-posed nature of the problem exacerbated by the scarcity of databases for training the models. Therefore, this work introduces a novel approach to automate the design process by leveraging diffusion models to enhance the existing ANNs-based framework and address the limitations of previous methodologies. Specifically, Denoising Diffusion Probabilistic Model (DDPM) to tackle the inverse problem of the analog IC sizing. DDPMs employ a noising and denoising architecture, where they learn to reconstruct input distributions by progressively adding and removing noise. Once trained, the DDPM can generate new data from pure noise. We show that even a simple DDPM can sample sizing solutions in a small amount of time, which is an important steppingstone for future research. Experimental results indicate that our models successfully sized the two tested circuits with an average median error of around 6%, surpassing the state-of-the-art approaches whose error was over 60 to 70% higher. Moreover, by taking advantage of the generative capabilities of our models, we were able to generate points for targets within the dataset, with most of them showing an error below 3%. For the more challenging targets, we managed to find solutions with errors below 10%, while the supervised approaches struggled to achieve errors under 20%.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"195 ","pages":"Article 155767"},"PeriodicalIF":3.0,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating performance degradation of RIS due to element failures using a genetic algorithm-based sparse array strategy 使用基于遗传算法的稀疏阵列策略减轻由于元件失效导致的RIS性能下降

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-20 DOI: 10.1016/j.aeue.2025.155770

Yangkun Zhu , Wenquan Cao , Chong He , Ning Wang , Jiemin Jing

{"title":"Mitigating performance degradation of RIS due to element failures using a genetic algorithm-based sparse array strategy","authors":"Yangkun Zhu , Wenquan Cao , Chong He , Ning Wang , Jiemin Jing","doi":"10.1016/j.aeue.2025.155770","DOIUrl":"10.1016/j.aeue.2025.155770","url":null,"abstract":"<div><div>A Genetic Algorithm (GA)-based sparse array strategy is introduced to mitigate the performance degradation of Reconfigurable Intelligent Surfaces (RIS) in satellite communication systems due to reconfigurable element failures in this paper. Such failures hinder real-time adjustment via Field Programmable Gate Array (FPGA), leading to permanent open or short circuit conditions. Modeling the remaining operational elements as sparse array elements and optimizing their states with a GA, a new compensation phase distribution can be obtained. Based on this optimized result, the phase states of the remaining operational elements can be dynamically adjusted using an FPGA, thereby mitigating the degradation in RIS radiation performance. This study systematically analyzes the impact of varying failure rates on RIS performance and evaluates the effects of different beam steering angles at a failure rate of 50 % with identical failed elements. The experimental results show the RIS performance enhancement, with a maximum peak gain improvement of 3.26 dB under varying failure rates and 7.1 dB with different beam steering angles.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"195 ","pages":"Article 155770"},"PeriodicalIF":3.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective harmonic Elimination using Dwarf mongoose optimization in Single-Phase Seven-Level switched capacitor inverter with reduced components 基于小猫鼬优化的单相七电平开关电容减分量逆变器谐波选择性消除

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-18 DOI: 10.1016/j.aeue.2025.155768

Ankit Singh , Vibhu Jately , Peeyush Kala , Rahul Singhal , Yongheng Yang

{"title":"Selective harmonic Elimination using Dwarf mongoose optimization in Single-Phase Seven-Level switched capacitor inverter with reduced components","authors":"Ankit Singh , Vibhu Jately , Peeyush Kala , Rahul Singhal , Yongheng Yang","doi":"10.1016/j.aeue.2025.155768","DOIUrl":"10.1016/j.aeue.2025.155768","url":null,"abstract":"<div><div>The advancement of high-performance multilevel inverters is essential for contemporary power electronics applications. Nonetheless, attaining a compact topology that offers high gain, minimized component count, and enhanced harmonic mitigation continues to pose a difficulty. This study presents a single-phase seven-level switched capacitor multilevel inverter (SCMLI) that employs ten switches, two capacitors, and a single DC source, utilizing the self-voltage balancing properties of switched capacitors to eliminate the necessity for auxiliary circuits or complex control mechanisms. The Dwarf Mongoose Optimization Algorithm (DMOA) improves the optimization of switching angles, hence enhancing selective harmonic removal and providing substantial control over individual harmonics. Comparative analysis and experimental results validate the inverter’s resilience and exceptional performance, exhibiting a threefold voltage gain. Moreover, DMOA surpasses conventional and state-of-the-art optimization algorithms in terms of both speed and convergence accuracy, and achieves the best accuracy of around <span><math><mrow><mn>1</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>-</mo><mn>52</mn></mrow></msup></mrow></math></span> which helps in significant reductions in the overall harmonic distortion, especially in the 5th and 7th harmonics. The inverter’s effectiveness in reducing switching losses, attributed to its low switching frequency and high operating efficiency, makes it an effective option for industrial applications.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"195 ","pages":"Article 155768"},"PeriodicalIF":3.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementation of chaining in operant conditioning by a neural network circuit 用神经网络电路实现操作性条件反射中的连锁

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-13 DOI: 10.1016/j.aeue.2025.155760

Bei Chen, Fazhan Liu, Ning Wang, Han Bao, Quan Xu

{"title":"Implementation of chaining in operant conditioning by a neural network circuit","authors":"Bei Chen, Fazhan Liu, Ning Wang, Han Bao, Quan Xu","doi":"10.1016/j.aeue.2025.155760","DOIUrl":"10.1016/j.aeue.2025.155760","url":null,"abstract":"<div><div>Chaining training is an effective training method in operant conditioning to help agents learn complex tasks that must occur in a specific sequential order. This approach deconstructs a complex task into its constituent components and systematically teaches each component in a step-by-step manner. This paper presents a memristive neural network circuit to implement chaining training in operant conditioning. The whole circuit is constructed from several single-behavioral training circuits connected in sequence, with the action output of one circuit serving as the cue input of the subsequent one. The single-behavioral training circuit consists of time-delay modules, a reward adjustment module, and a read/write circuit for synapse weight. This single-behavioral training circuit not only simulates basic processes in operant conditioning, but also demonstrates that the training speed continues to decrease due to reward fatigue. By introducing multiple rewards, the impact of reward fatigue can be mitigated. Chaining training is also successfully implemented for a two-step target task. Finally, this neural network circuit is applied to assembly robots, enabling them to perform grasping and installation tasks adaptively. This work has significant application potential in the field of industrial robotics.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"194 ","pages":"Article 155760"},"PeriodicalIF":3.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A robust noise power and SNR estimator for MCIK OFDM systems over-generalised α-μfading channel with imperfect CSI 针对非完美CSI下的广义α-μ衰落信道的MCIK OFDM系统的鲁棒噪声功率和信噪比估计

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-13 DOI: 10.1016/j.aeue.2025.155763

Bandi Narasimha Rao, Anuradha Sundru

{"title":"A robust noise power and SNR estimator for MCIK OFDM systems over-generalised α-μfading channel with imperfect CSI","authors":"Bandi Narasimha Rao, Anuradha Sundru","doi":"10.1016/j.aeue.2025.155763","DOIUrl":"10.1016/j.aeue.2025.155763","url":null,"abstract":"<div><div>Estimating the noise power and signal-to-noise ratio (SNR) are the core issues in any communication system. This paper introduces a novel algorithm to calculate the noise power and SNR for multi-carrier index keying (MCIK)-based orthogonal frequency division multiplexing (OFDM) systems operating over a generalised <span><math><mi>α</mi></math></span>-<span><math><mi>μ</mi></math></span> fading channel. The impact of imperfect channel state information (CSI) uncertainty on the performance of the proposed estimator is investigated. An efficient algorithm is introduced on the transmitter side to transmit the nulled subcarriers effectively. Similarly, another effective algorithm is developed at the receiver side to identify the position of transmitted nulled subcarriers, as these positions are not fixed in the MCIK OFDM system. The average SNR, along with the average noise power is determined. The proposed estimator’s performance is compared with the Preamble, Boumard, Ren’s, Pilot, MMSE, CAZAC, and correlation-based CP-less estimators of OFDM systems. Additionally, the performance is also analysed using mean square error (MSE). The proposed estimator significantly improves spectral efficiency (SE) and energy efficiency (EE). It also achieves lower MSE over the existing estimators.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"194 ","pages":"Article 155763"},"PeriodicalIF":3.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0