Electronics Letters最新文献_第10页

Energy efficiency maximization in IRS-aided cooperative WPCN with non-linear EH users 非线性EH用户下irs辅助协同WPCN的能源效率最大化

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-12 DOI: 10.1049/ell2.13291

Bharti Katiyar, Deepak Mishra, Sudhakar Modem, Ravikant Saini

{"title":"Energy efficiency maximization in IRS-aided cooperative WPCN with non-linear EH users","authors":"Bharti Katiyar, Deepak Mishra, Sudhakar Modem, Ravikant Saini","doi":"10.1049/ell2.13291","DOIUrl":"https://doi.org/10.1049/ell2.13291","url":null,"abstract":"This work investigates energy efficiency (EE) maximization in intelligent reflecting surfaces (IRS) aided wireless-powered communication network with hybrid access point (HAP) and non-linear energy harvesting (EH) users. For system designers, maximizing EE is important to ensure a sustaining operation of the energy constrained wireless-powered communication network. The HAP powers the users in energy transmission mode (ETM), and it receives information from the users in cooperative manner through information transmission mode (ITM). The focus is on maximizing EE at the HAP by jointly optimizing IRS phase shifts along with transmit time and power allocation at users. The inherent non-convexity of the problem arises from the non-linear EH model at users and the practical non-linear design of IRS phase shifts. To address this, a decoupling strategy is employed, and optimal ITM IRS phase shifts are obtained using the penalty-based method. Subsequently, an alternating optimization approach is proposed where optimal IRS phase shifts in ETM are iteratively updated, incorporating a semidefinite relaxation technique. By utilizing the obtained optimal phase shifts for both ITM and ETM, the joint optimization problem is iteratively solved to maximize EE while considering time and power allocation, employing Dinkelbach's algorithm. Simulation results showcase a substantial enhancement of the system performance using proposed scheme compared to benchmark methods.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.13291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unified Odd-Descent Regularization for Input Optimization 输入优化的统一奇降正则化

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-12 DOI: 10.1049/ell2.70170

Zheng-Sen Zhou, Zhao-Rong Lai

引用次数: 0

A Modified Balanced Radio-Frequency Power Amplifier for Adjustable VSWR Protection 用于可调驻波比保护的改进型平衡射频功率放大器

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-12 DOI: 10.1049/ell2.70171

Alexis Carbonnière, Pierre Medrel, Jean-Michel Nébus, Ludovic Bacqué, Maxime Schutz

引用次数: 0

MultiF-RSNet: Distributed interpretation for multi-platform collaborative in remote sensing MultiF-RSNet：面向多平台协同遥感的分布式解释

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-11 DOI: 10.1049/ell2.70156

Luning Zhang, Xue Lu, Yuanchun He, Zheng Sun, Shujing Duan, Liangjin Zhao

引用次数: 0

A Low-Distortion Bootstrapped Switch Based on Parasitic Capacitance Reduction Techniques 一种基于寄生电容减小技术的低失真自启动开关

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-10 DOI: 10.1049/ell2.70172

Ming Wang, Yanhan Gu, Li Zeng, Zhangwen Tang

引用次数: 0

Hybrid system consisting of synchronous condenser and virtual synchronous generator for enhanced power quality in microgrid 为提高微电网电能质量，采用同步冷凝器和虚拟同步发电机组成的混合系统

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-10 DOI: 10.1049/ell2.70168

Renqi Guo, Nan Zhao

{"title":"Hybrid system consisting of synchronous condenser and virtual synchronous generator for enhanced power quality in microgrid","authors":"Renqi Guo, Nan Zhao","doi":"10.1049/ell2.70168","DOIUrl":"https://doi.org/10.1049/ell2.70168","url":null,"abstract":"Virtual synchronous generator (VSG) has been widely researched and applied to converters for their grid-forming capabilities. However, the intrinsic coupling between the active and reactive power outputs of VSGs negatively impacts the power quality delivered to the grid, particularly in microgrids. When VSG is compensating for the reactive power imbalances, the active power output will concurrently change, leading to a variation of frequency. Although existing literature proposes various improvements to decouple these power outputs, complete decoupling cannot be achieved solely by VSGs. This letter analyses the coupling mechanism and investigates a hybrid approach combining a VSG and a synchronous condenser (SC) to mitigate this effect, improving the power quality. Additionally, this study modifies the traditional reactive power control of VSGs to ensure voltage stability during transients. Test cases are carried out to verify the effectiveness of the proposed method. The results show that the system active and reactive power are effectively decoupled, and it maintains the frequency while regulating the grid voltage.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZnO-based memristor for random number generator: The case of current compliance 基于zno的随机数发生器忆阻器：电流符合的情况

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-09 DOI: 10.1049/ell2.70165

Zohreh Hajiabadi, Irwan Purnama, Asep Nugroho, Hanyu Cao, Sridhar Chandrasekaran, Husneni Mukhtar, Dimitra G. Georgiadou, Harold M. H. Chong, David B. Thomas, Firman M. Simanjuntak

引用次数: 0

Multimodal sensor for soft grippers based on optical displacement sensing 基于光学位移传感的软爪多模态传感器

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-09 DOI: 10.1049/ell2.70149

Myoung-Su Choi, Ji-Hun Bae, Jae-Han Park, Dong-Hyuk Lee

引用次数: 0

A miniaturized microstrip suppressing cell as an integrated HCC in class F/F−1 power amplifiers for 5G applications 用于5G应用的F/F−1类功率放大器中作为集成HCC的小型化微带抑制细胞

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-09 DOI: 10.1049/ell2.70144

Farzin Shama

{"title":"A miniaturized microstrip suppressing cell as an integrated HCC in class F/F−1 power amplifiers for 5G applications","authors":"Farzin Shama","doi":"10.1049/ell2.70144","DOIUrl":"https://doi.org/10.1049/ell2.70144","url":null,"abstract":"This study presents the design and implementation of a miniaturized suppressing cell (MSC) functioning as a low-pass filter (LPF) utilizing an interdigital shaped resonator. The MSC is engineered to effectively control harmonics in power amplifiers (PAs), particularly in applications for next-generation 5G systems. The LPF achieves a cut-off frequency of 2.21 GHz, demonstrating a sharp transition region spanning 0.6 GHz, where the attenuation transitions from −3 to −40 dB. Notably, the filter exhibits an ultra-extended rejection bandwidth, maintaining at least −20 dB from 2.8 to 29.17 GHz. The measured flat group delay further confirms the excellent passband performance of this LPF, indicating minimal signal distortion. Given the critical role of harmonic control circuits (HCCs) in enhancing the efficiency and linearity of various PA classes, including class-F and class-F−1 configuration, the proposed MSC serves as a vital component in HCC designs. This advancement not only contributes to improved performance in PAs but also supports the demands of modern wireless communication systems, reinforcing the MSC's significance in high-frequency applications.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 structure-prior guided adaptive context selection network for remote sensing semantic segmentation 用于遥感语义分割的结构先导自适应上下文选择网络

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-02-08 DOI: 10.1049/ell2.70161

Shengjun Xu, Rui Shen, Erhu Liu, Zongfang Ma, Miao Du, Jun Liu, Bohan Zhan

{"title":"A structure-prior guided adaptive context selection network for remote sensing semantic segmentation","authors":"Shengjun Xu, Rui Shen, Erhu Liu, Zongfang Ma, Miao Du, Jun Liu, Bohan Zhan","doi":"10.1049/ell2.70161","DOIUrl":"https://doi.org/10.1049/ell2.70161","url":null,"abstract":"In remote sensing image segmentation, recognizing buildings is challenging when the visual evidence from pixels is weak or when buildings belong to small, spatially structured objects. To address this issue, a structure-prior guided adaptive context selection network (SGACS-Net) is proposed for remote sensing semantic segmentation. The core is to use structure-prior knowledge to dynamically capture prior contextual information and higher-order object structural features, thereby improving the accuracy of remote sensing building segmentation. First, an adaptive context selection module is designed. By dynamically adjusting the spatial sensing field, this module effectively models the global long-range context information dependencies. It captures varying context information of buildings at different scales, thereby enhancing the network's ability to extract building feature representations. Second, a structure-prior guided variable loss function is proposed. It utilizes the structural features of building points, lines, and surface to identify key regions. By leveraging advanced structure-prior knowledge, it enhances the network's ability to express structural features. Experimental results on two datasets show that the proposed SGACS-Net outperforms other typical and state-of-the-art methods in terms of remote sensing semantic segmentation performance.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0