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Wideband Wide-Scanning Phased Array Based on Connected SIW Cavities and Slit Antenna 基于连接SIW腔和狭缝天线的宽带宽扫描相控阵
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-11 DOI: 10.1049/ell2.70353
Pengfei Zhang, Hansen Zeng, Zheng Xu, Kaiming Xu, Shilong Chen
{"title":"Wideband Wide-Scanning Phased Array Based on Connected SIW Cavities and Slit Antenna","authors":"Pengfei Zhang,&nbsp;Hansen Zeng,&nbsp;Zheng Xu,&nbsp;Kaiming Xu,&nbsp;Shilong Chen","doi":"10.1049/ell2.70353","DOIUrl":"10.1049/ell2.70353","url":null,"abstract":"<p>This paper presents a novel broadband phased array antenna with wide-angle scanning capability. The antenna elements utilize an I-shaped slot to couple energy from the feed, exciting two distinct modes within two differently sized SIW cavities positioned above it. An impedance matching network at the feed point is used to enable broadband radiation performance. Meanwhile, top-loaded dipoles are incorporated to enhance the H-plane scanning characteristics. The resulting array achieves a 40% bandwidth while maintaining effective scanning up to ± 60° in the H-plane.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70353","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606661","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
Sparse Array Configuration Optimization Based on Target Priors in Distributed ISAR Imaging 分布式ISAR成像中基于目标先验的稀疏阵列配置优化
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-09 DOI: 10.1049/ell2.70341
Siyu Zhao, Guangbin Zhang, Yan Wang
{"title":"Sparse Array Configuration Optimization Based on Target Priors in Distributed ISAR Imaging","authors":"Siyu Zhao,&nbsp;Guangbin Zhang,&nbsp;Yan Wang","doi":"10.1049/ell2.70341","DOIUrl":"10.1049/ell2.70341","url":null,"abstract":"<p>This letter considers the sparse array configuration optimization problem for long-range distributed inverse synthetic aperture radar (ISAR) imaging to suppress the strong grating lobes. Existing methods face two challenges: 1) The distributed ISAR model requires joint consideration of spatial configuration and temporal sampling, which typical models fail to apply; 2) Existing methods typically suppress grating lobes over the entire angular domain, leading to limited performance gains. To overcome these challenges, we construct an equivalent distributed array model and incorporate target prior information to constrain the angular parameter space, thereby enhancing the grating lobe suppression capability within the region of interest. Simulation results validate that the proposed method improves the peak grating lobe ratio by over 3 dB within the region of interest.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70341","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144582229","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
High-Impedance Dipoles for Auto-Receiver Tracking Wireless Power Transfer Systems 用于自动接收机跟踪无线电力传输系统的高阻抗偶极子
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-09 DOI: 10.1049/ell2.70339
Ali Sharifian Mazraeh Mollaei, Ilkka Laakso, Masoud Sharifian Mazraeh Mollaei
{"title":"High-Impedance Dipoles for Auto-Receiver Tracking Wireless Power Transfer Systems","authors":"Ali Sharifian Mazraeh Mollaei,&nbsp;Ilkka Laakso,&nbsp;Masoud Sharifian Mazraeh Mollaei","doi":"10.1049/ell2.70339","DOIUrl":"10.1049/ell2.70339","url":null,"abstract":"<p>This study presents a self-tuning multi-transmitter (multi-Tx) wireless power transfer (WPT) system designed for applications requiring freely positioned receivers (Rxs). The system leverages high-impedance dipole (HID) as Txs to dynamically activate the nearest Tx to a simple dipole antenna as the Rx while deactivating other Txs without additional control circuits. The Txs design incorporates a modified coaxial cable dipole antenna featuring symmetrical gaps over the shield and inductive tuning elements between the central wire and the shield to optimise the resonance frequency and ensure effective power transfer. The feeding point is connected to the central wire via a small cut in the shield. This autonomous behaviour simplifies system operation, enhances flexibility, and ensures acceptable efficient power transfer. Experimental evaluation demonstrates that the system achieves a power transfer efficiency of approximately 65% while maintaining consistent performance as the Rx rotates over two orthogonally located Txs. The dynamic self-tuning mechanism adapts to the position of the Rx, proving particularly advantageous on curved surfaces.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70339","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144582131","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 Passive NOT Gate at Gbps Data Rates Using an LC Lattice 利用LC晶格实现Gbps数据速率的无源非门
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-08 DOI: 10.1049/ell2.70360
Joshua David Schwartz, Hao Sun, José Azaña
{"title":"A Passive NOT Gate at Gbps Data Rates Using an LC Lattice","authors":"Joshua David Schwartz,&nbsp;Hao Sun,&nbsp;José Azaña","doi":"10.1049/ell2.70360","DOIUrl":"10.1049/ell2.70360","url":null,"abstract":"<p>In this work, an unpowered Boolean NOT gate is demonstrated through the novel repurposing of a classic LC filter circuit. This expands the library of logical primitives that can operate without a power supply in the native electrical medium. The authors describe the circuit and experimentally validate its operation at up to 5 Gbps.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70360","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573893","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 Programmable Gain Amplifier With Temperature Compensation for Hall Sensor 具有温度补偿的可编程增益放大器用于霍尔传感器
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-08 DOI: 10.1049/ell2.70355
Kaixin Fan, Long Li, Haozhe Zhang, Hongmei Chen, Dong Huang, Yongsheng Yin
{"title":"A Programmable Gain Amplifier With Temperature Compensation for Hall Sensor","authors":"Kaixin Fan,&nbsp;Long Li,&nbsp;Haozhe Zhang,&nbsp;Hongmei Chen,&nbsp;Dong Huang,&nbsp;Yongsheng Yin","doi":"10.1049/ell2.70355","DOIUrl":"10.1049/ell2.70355","url":null,"abstract":"<p>This letter presents a novel programmable gain amplifier (PGA) for Hall sensors, integrating temperature compensation and fuse trimming to reduce temperature drift and achieve variable sensitivity. To maintain a consistent gain over a wide temperature range, a Hall device, matching the shape and material of the Hall plates, with a negative temperature coefficient is used as the load, compensating for the temperature variations in the input signal from the Hall plates. High-order temperature compensation is used to ensure consistent sensitivity of the Hall sensor. Additionally, to accommodate a wide input signal range, a fuse trimming circuit is introduced to adjust the gain of the PGA. Using the GF180-nm BiCMOS process, the measurement results show that, when used in a Hall sensor, the sensitivity ranges from 1.8 mV/G to 15.8 mV/G, with a linearity error of less than 0.4% and a temperature sensitivity drift of less than 0.3% over the operational temperature range of −40∼140°C.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70355","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581847","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
Dynamic Resource Reservation for Deadline-Guaranteed Admission Control in Distributed Time-Sensitive Networking 分布式时间敏感网络中保证截止日期准入控制的动态资源预留
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-08 DOI: 10.1049/ell2.70350
Sifan Yu, Anlan Xie, Feng He, Luxi Zhao
{"title":"Dynamic Resource Reservation for Deadline-Guaranteed Admission Control in Distributed Time-Sensitive Networking","authors":"Sifan Yu,&nbsp;Anlan Xie,&nbsp;Feng He,&nbsp;Luxi Zhao","doi":"10.1049/ell2.70350","DOIUrl":"10.1049/ell2.70350","url":null,"abstract":"<p>Conventional deadline-guaranteed admission control methods in distributed time-sensitive networking (TSN) rely on fixed bandwidth reservations and delay budgets that are unadjustable at runtime, limiting the adaptability and stability of admitting time-critical traffic and hindering the efficient use of residual bandwidth for non-time-critical traffic. In this letter, we propose a novel dynamic resource reservation scheme for distributed admission control. It uses information available in distributed networks to adaptively adjust local deadlines and bandwidth reservations in response to dynamic traffic changes, ensuring end-to-end deadlines for time-critical traffic while maximizing available bandwidth for non-time-critical traffic. We also present the implementation within the resource allocation protocol (RAP) model, eliminating the need for centralized storage and decision-making. Experimental results show that our method avoids the need for pre-configuration based on prior traffic knowledge, increases admissions for time-critical traffic, and enhances available bandwidth for non-time-critical traffic.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70350","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581846","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
Repetition Frequency Detuning in Mode-Locked Lasers with Integrated S-Bend Waveguide 集成s弯波导锁模激光器的重复频率失谐
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-07 DOI: 10.1049/ell2.70266
Shulin Wohlfeil, Jan-Philipp Koester, Heike Christopher, Jörg Fricke, Pietro Della Casa, Hans Wenzel, Andrea Knigge, Günther Tränkle
{"title":"Repetition Frequency Detuning in Mode-Locked Lasers with Integrated S-Bend Waveguide","authors":"Shulin Wohlfeil,&nbsp;Jan-Philipp Koester,&nbsp;Heike Christopher,&nbsp;Jörg Fricke,&nbsp;Pietro Della Casa,&nbsp;Hans Wenzel,&nbsp;Andrea Knigge,&nbsp;Günther Tränkle","doi":"10.1049/ell2.70266","DOIUrl":"10.1049/ell2.70266","url":null,"abstract":"<p>We present the integration of an S-bend waveguide into the cavity of a mode-locked diode laser to tune its repetition frequency for use in terahertz time-domain spectroscopy applications. The mode-locked diode laser, featuring a facet-to-facet 6-mm-long straight ridge waveguide, emits light at a wavelength of around 830 nm and operates at a repetition frequency of 6.3 GHz. By incorporating an S-bend into the cavity, the optical path length can be modified, enabling a variation of up to 12 MHz in the repetition frequency. Furthermore, this approach supports the co-integration of two lasers on a single chip, each with a distinct repetition rate but operating under identical environmental and driving conditions, offering a robust and compact two-laser solution for asynchronous optical sampling.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70266","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573697","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
NAND-Structured Physically Unclonable Function With Current Mirror Switching Stabilization and Minimized CRP Discards nand结构的物理不可克隆功能与电流镜像开关稳定和最小化CRP丢弃
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-07 DOI: 10.1049/ell2.70357
Hyungwoo Kim, Dong-Woo Jee, Jongmin Lee
{"title":"NAND-Structured Physically Unclonable Function With Current Mirror Switching Stabilization and Minimized CRP Discards","authors":"Hyungwoo Kim,&nbsp;Dong-Woo Jee,&nbsp;Jongmin Lee","doi":"10.1049/ell2.70357","DOIUrl":"10.1049/ell2.70357","url":null,"abstract":"<p>This paper presents a NAND-structured physically unclonable function (PUF) incorporating a novel current mirror-switching stabilization scheme. The proposed design leverages sub-threshold current mismatches induced by process variations to generate random responses. To address scenarios where the current difference is insufficient for stable response generation, the current mirror-switching method amplifies the mismatch, thereby enhancing stability and reducing the number of discarded challenge-response pairs (CRPs) through trimming. Simulation results demonstrate that the proposed PUF achieves the worst-case bit flip ratio (BFR) 0.99% at 1.8 V and 80 <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mrow></mrow>\u0000 <mo>∘</mo>\u0000 </msup>\u0000 <mi>C</mi>\u0000 </mrow>\u0000 <annotation>$^{circ }{rm C}$</annotation>\u0000 </semantics></math> with 1.64% trimming ratio. By applying the proposed current mirror switching method, the trimming ratio is reduced by 86.2% while maintaining equivalent reliability. Furthermore, the proposed PUF achieves robust BFR performance, with variations of 0.099% per 10 <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mrow></mrow>\u0000 <mo>∘</mo>\u0000 </msup>\u0000 <mi>C</mi>\u0000 </mrow>\u0000 <annotation>$^{circ }{rm C}$</annotation>\u0000 </semantics></math> and 0.071% per 100 mV under temperature and supply voltage changes, respectively.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70357","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573696","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 Dual-Polarised Nonreciprocal Electromagnetic Metasurface 一种双极化非互易电磁超表面
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-03 DOI: 10.1049/ell2.70177
Kazuhiro Takahagi, Alan Tennant
{"title":"A Dual-Polarised Nonreciprocal Electromagnetic Metasurface","authors":"Kazuhiro Takahagi,&nbsp;Alan Tennant","doi":"10.1049/ell2.70177","DOIUrl":"10.1049/ell2.70177","url":null,"abstract":"<p>The application of electromagnetic materials to mobile systems and other platforms requiring complex utilization of radio waves necessitates compatibility with various polarizations. For nonreciprocal metasurfaces that support unidirectional propagation, achieving dual polarization (vertical and horizontal) presents significant design challenges. This study proposes a simple structure for dual-polarization nonreciprocal metasurfaces and presents theoretical and experimental analyses of its performance. As a result, a dual-polarization nonreciprocal metasurface exhibiting high-pass filter characteristics at C-band is realised by incorporating ferrite into a strip line lattice structure, achieving an isolation of 7 dB.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551150","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
Wideband Dual-Mode Resonant Sectorial Dipole Antenna Fed by a Loop Balancing Device 环平衡装置馈源的宽带双模谐振扇形偶极子天线
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-07-03 DOI: 10.1049/ell2.70354
Xue-Ying Lin, Wen-Jun Lu, Chun-Xing He, Yang Zhong, Lei Zhu
{"title":"Wideband Dual-Mode Resonant Sectorial Dipole Antenna Fed by a Loop Balancing Device","authors":"Xue-Ying Lin,&nbsp;Wen-Jun Lu,&nbsp;Chun-Xing He,&nbsp;Yang Zhong,&nbsp;Lei Zhu","doi":"10.1049/ell2.70354","DOIUrl":"10.1049/ell2.70354","url":null,"abstract":"<p>This letter proposes a novel approach to dual-mode resonant sectorial dipole antennas by incorporating a loop balancing device only. The loop balancing device is conformally bonded to the radius and circumference of the sectorial dipole and serves as a shielded, full-wavelength loop antenna. As a result, an additional low-frequency resonance can be incorporated into the sectorial dipole to yield a wideband, balanced design without increasing antenna size or introducing external perturbations. Experimental validations demonstrate that the proposed antenna exhibits a wide available bandwidth of 48.6% with a stable average gain of 6.3 dBi over the 1.65∼2.71 GHz band.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70354","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144537030","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
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