Aeu-International Journal of Electronics and Communications最新文献_第6页

A compact and tunable active inductor-based bandpass filter with high quality factor for Wireless LAN applications 适用于无线局域网应用的高品质因数紧凑型可调有源电感器带通滤波器

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-28 DOI: 10.1016/j.aeue.2024.155540

Zahra Gorjizad, Ashkan Shojaee, Adib Abrishamifar

{"title":"A compact and tunable active inductor-based bandpass filter with high quality factor for Wireless LAN applications","authors":"Zahra Gorjizad, Ashkan Shojaee, Adib Abrishamifar","doi":"10.1016/j.aeue.2024.155540","DOIUrl":"10.1016/j.aeue.2024.155540","url":null,"abstract":"<div><div>A fully-differential compact and tunable second-order bandpass filter (BPF) with high quality factor using a novel active inductor (AI) has been proposed for 3.6 GHz WLAN applications. The proposed AI employs a differential amplifier as a feedforward transconductor and a common-source (CS) transistor as a feedback transconductor in a symmetrical configuration. The combination of a cascode scheme and a resistor in the feedback path enhances the quality factor of the AI, thereby increasing the mid-band gain of the BPF. In order to achieve independent tuning of both the center frequency and mid-band gain of the BPF, a varactor capacitor is utilized. The proposed second-order BPF is designed with a center frequency and a bandwidth of 3.675 GHz and 10 MHz, respectively. Post-layout simulation, process corner, and temperature sweep analysis results are conducted with 65 nm CMOS technology at 1.2 V supply voltage. The proposed filter has a tuning range of 3.655–3.695 GHz and attains a mid-band gain of 67.5 dB, a noise figure of 14.5 dB, and a 1-db compression point of −12.39 dBm. Additionally, the BPF consumes a DC power of 1.22 mW and occupies an active area of only 8.85 <span><math><mi>μ</mi></math></span>m <span><math><mo>×</mo></math></span> 10.3 <span><math><mi>μ</mi></math></span>m.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155540"},"PeriodicalIF":3.0,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419804","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

Highly-miniaturized microfluidically-based frequency reconfigurable antenna diplexer employing half-mode SIRW 采用半模 SIRW 的高度微型化微流控频率可重构天线双工器

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-28 DOI: 10.1016/j.aeue.2024.155534

Rusan Kumar Barik , Slawomir Koziel

{"title":"Highly-miniaturized microfluidically-based frequency reconfigurable antenna diplexer employing half-mode SIRW","authors":"Rusan Kumar Barik , Slawomir Koziel","doi":"10.1016/j.aeue.2024.155534","DOIUrl":"10.1016/j.aeue.2024.155534","url":null,"abstract":"<div><div>This article introduces a super-miniaturized frequency reconfigurable antenna diplexer based on microfluidic techniques. The proposed structure is developed using a half-mode substrate-integrated rectangular waveguide (HMSIRW). The antenna architecture consists of two HMSIRW cavities loaded with L-shaped slots, which are excited by two microstrip feedlines to realize two distinct radiating frequency bands. The footprint of the antenna diplexer is miniaturized by using the half-mode cavities. Further size reduction is achieved by the capacitive loading of the slots. The design evaluation, radiation mechanism, parametric analysis, and equivalent circuit model are discussed in detail. The empty fluidic vias are drilled on the bottom plane of the cavities and poured with various dielectric liquids to obtain independent frequency reconfigurability at two operating bands. For validation, a frequency reconfigurable antenna diplexer is designed, manufactured, and demonstrated experimentally. The measured results show that the return loss, isolation, and realized gains are greater than −20 dB, 28 dB, and 3.3 dBi, respectively, while ensuring small footprint of only 0.071λ<sub>g</sub><sup>2</sup>. The fabricated diplexer exhibits a frequency reconfiguration range greater than 17 % at both frequency bands.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155534"},"PeriodicalIF":3.0,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357738","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

Analysis and design of voltage-source parallel resonant class E/F3 inverter 电压源并联谐振式 E/F3 类逆变器的分析与设计

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-27 DOI: 10.1016/j.aeue.2024.155542

Tian Li, Mingyu Li, Zhijiang Dai, Rui Zhang, Weimin Shi, Jingzhou Pang, Hailin Cao

{"title":"Analysis and design of voltage-source parallel resonant class E/F3 inverter","authors":"Tian Li, Mingyu Li, Zhijiang Dai, Rui Zhang, Weimin Shi, Jingzhou Pang, Hailin Cao","doi":"10.1016/j.aeue.2024.155542","DOIUrl":"10.1016/j.aeue.2024.155542","url":null,"abstract":"<div><div>In this paper, a detailed mathematical analysis process of the voltage-source parallel resonant (VSPR) class <span><math><mrow><mi>E</mi><mo>/</mo><msub><mrow><mi>F</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> inverter at 50% duty ratio is proposed. Combining the advantages of VSPR class E and F inverters, the performance of the proposed inverter can be improved greatly compared to the traditional. The transistor in the VSPR class <span><math><mrow><mi>E</mi><mo>/</mo><msub><mrow><mi>F</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> inverter is satisfied with zero-voltage switching(ZVS) and zero-voltage derivative switching(ZVDS) conditions. Moreover, two design freedoms can be obtained and the proposed analysis process is based on them, which can provide more flexible selections. Finally, a VSPR class <span><math><mrow><mi>E</mi><mo>/</mo><msub><mrow><mi>F</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> inverter is fabricated and the experiment is carried out. The measured normalized peak transistor voltage decreases by 25.6%. The output power reaches 5.06 W, and the efficiency reaches 93.75%. The measured results are well agreed with the theoretical and simulated.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155542"},"PeriodicalIF":3.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357736","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 novel microwave microfluidic sensor for purity detection of Medicines’ raw materials 用于检测药物原料纯度的新型微波微流控传感器

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-26 DOI: 10.1016/j.aeue.2024.155541

Fahimeh Jafari, Mazdak Rad Malekshahi

引用次数: 0

A simple way to achieve planar excitation of arc-shaped array feeds in two-dimensional beam-steerable spherical lens antenna 在二维波束稳定球透镜天线中实现弧形阵列馈电平面激励的简单方法

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-26 DOI: 10.1016/j.aeue.2024.155536

Liangyu Sun, Binyun Yan, Weixing Sheng

{"title":"A simple way to achieve planar excitation of arc-shaped array feeds in two-dimensional beam-steerable spherical lens antenna","authors":"Liangyu Sun, Binyun Yan, Weixing Sheng","doi":"10.1016/j.aeue.2024.155536","DOIUrl":"10.1016/j.aeue.2024.155536","url":null,"abstract":"<div><div>In this article, a simple technique for achieving planar excitation positions of arc-shaped array feeds in a two-dimensional (2D) beam-steerable spherical lens antenna (SLA) is proposed. Specifically, a cuboid solder model is introduced to connect the feedlines of the feeds with the coaxial probe. An equivalent circuit model of the bowtie feed unit with solder is proposed to illustrate the impact of the introduced solder on the port matching. Additionally, the excitation position is altered by extending the microstrip feedline, which does not change the radiation structure of the feed nor affect its phase center. Subsequently, a homogeneous dielectric SLA with a 139-element bowtie-shaped dipole feed array is constructed to verify the planar excitation position scheme for the arc-shaped array feeds, which facilitates system integration. The theoretical calculation formulas for the beam pointing angles of numerous beams are also proposed. In the fabricated prototype, all feeds exhibit an overlapping bandwidth of 31–36.7 GHz for reflection coefficients, with the coupling less than -20 dB. The 139 switched beams cover a 2D continuous beam space of [<span><math><mo>−</mo></math></span>33°, 33°], with adjacent beam crossover levels around -4 dB. The measured peak gain is 28.7 dBi at 34.5 GHz, with an aperture efficiency of 57%.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155536"},"PeriodicalIF":3.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357737","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

Radar pre-sorting algorithm based on autoencoder and LSTM 基于自动编码器和 LSTM 的雷达预排序算法

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-24 DOI: 10.1016/j.aeue.2024.155535

Yilin Jiang , Shaoxiong Shi , Fangyuan Zhang , Wuqi Huang

{"title":"Radar pre-sorting algorithm based on autoencoder and LSTM","authors":"Yilin Jiang , Shaoxiong Shi , Fangyuan Zhang , Wuqi Huang","doi":"10.1016/j.aeue.2024.155535","DOIUrl":"10.1016/j.aeue.2024.155535","url":null,"abstract":"<div><div>As the electromagnetic environment becomes increasingly complex, most current radar signal sorting methods are unsustainable. They often perform poorly when dealing with unknown radar types and low-frequency radar pulse data. This paper introduces a radar pre-sorting algorithm based on autoencoder and LSTM. The algorithm utilizes multi-dimensional information such as pulse width, carrier frequency, and time of arrival. The autoencoder network is employed to achieve automatic feature extraction and clustering, enhancing the extraction of latent features in the data. The proposed network model mainly consists of three parts: an encoding module composed of a convolutional neural network (CNN), a feature aggregation module composed of long short-term memory (LSTM), and a decoding module obtained through a convolutional autoencoder, referred to as CLDE (CNN-LSTM-Decode). The encoding module extracts features from multi-dimensional data to obtain compressed features, the feature accumulation module processes the compressed features, further extracting hidden features between pulses. Subsequently, the decoding module determines the pulse modulation type of each pulse, achieving the purpose of radar pulse signal pre-sorting. Simulation results show that this network structure effectively pre-classifies unknown radar signals and has a high recognition rate for low-frequency pulses. Additionally, CLDE exhibits high reliability and stability in environments with pulse loss.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155535"},"PeriodicalIF":3.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326865","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

Radiation-hardened latch design with triple-node-upset recoverability 抗辐射加固闩锁设计，具有三节点重置恢复能力

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-24 DOI: 10.1016/j.aeue.2024.155539

Evangelos Paparsenos, Yiorgos Tsiatouhas

引用次数: 0

Compact dual-band enhanced bandwidth 5G mm – wave MIMO dielectric resonator antenna utilizing metallic strips 利用金属带的紧凑型双频增强带宽 5G 毫米波 MIMO 介质谐振器天线

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-24 DOI: 10.1016/j.aeue.2024.155510

Hamza Ahmad , Mohd Haizal Jamaluddin , Fauziahanim Che Seman , Muhibur Rahman , Nida Nasir , Ayesha Ayub

{"title":"Compact dual-band enhanced bandwidth 5G mm – wave MIMO dielectric resonator antenna utilizing metallic strips","authors":"Hamza Ahmad , Mohd Haizal Jamaluddin , Fauziahanim Che Seman , Muhibur Rahman , Nida Nasir , Ayesha Ayub","doi":"10.1016/j.aeue.2024.155510","DOIUrl":"10.1016/j.aeue.2024.155510","url":null,"abstract":"<div><div>A compact dual-band Multiple-Input Multiple-Output Dielectric Resonator Antenna with improved bandwidth for 5G mm-wave applications is presented. Two rectangular DRAs mounted on a substrate backed ground plane are excited by microstrip feed through aperture coupling. Notches cut out from center of the DRAs helps to achieve a dual-band response with improved bandwidth by exciting several modes. The isolation between the DRAs is achieved by appropriately positioning metallic strips on walls on of the DRAs. A dual-band response with enhanced bandwidth and mutual coupling reduction. The impedance bandwidth for the proposed design is between 26.5–30 GHz (12.4 %) and 34.2–40 GHz (15.6 %). The maximum isolation achieved in the lower band is 32 dB and above 45 dB in the upper band. The overall size of the design is 1.88λ<sub>o</sub> x 0.94λ<sub>o</sub> x 0.20λ<sub>o</sub>. The design procedure is described, and the role of decoupling strips are explained. A prototype is fabricated and measured to validate the proposed design.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155510"},"PeriodicalIF":3.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326863","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

Real-FlexE: Real-time Flexible channel Emulator Real-FlexE：实时灵活通道模拟器

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-24 DOI: 10.1016/j.aeue.2024.155538

Ilias Papalamprou , Giorgos Armeniakos , Panagiotis Minaidis , Ioannis Stratakos , George Lentaris , Dimitrios Soudris

引用次数: 0

Priority-based band sharing for secondary users in cognitive radio networks 认知无线电网络中二级用户基于优先级的频段共享

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-23 DOI: 10.1016/j.aeue.2024.155533

Mohammed Hawa , Fahed Jubair , Raed Al-Zubi , Khalid A. Darabkh

{"title":"Priority-based band sharing for secondary users in cognitive radio networks","authors":"Mohammed Hawa , Fahed Jubair , Raed Al-Zubi , Khalid A. Darabkh","doi":"10.1016/j.aeue.2024.155533","DOIUrl":"10.1016/j.aeue.2024.155533","url":null,"abstract":"<div><div>To improve wireless spectrum utilization, cognitive radio networks (CRNs) allow secondary users (SUs) opportunistic access to the frequency bands owned by primary users (PUs), when such PUs are inactive. A fully distributed CRN architecture is quite favorable, as it does not require any centralized scheduling, nor does it require coordination between SUs via a common control channel. This can reduce cost and avoid single point-of-failure issues. However, uncoordinated access to the spectrum by competing SUs, if not done judiciously, can cause excessive collisions and limit performance, which can be detrimental to the usefulness of CRNs, especially if some SUs have urgent traffic to send. Hence, we present a novel protocol to support traffic with multiple classes of priority within a fully distributed CRN. In such protocol, competing SUs attempt to access the spectrum autonomously, but rationally, based on their priority level, opting to transmit their packets when it is beneficial to both the SU itself and also to the overall system performance. Simulations confirm that the proposed protocol achieves excellent overall network performance, while ensuring that higher priority packets experience higher throughput and smaller delay compared to lower priority packets.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155533"},"PeriodicalIF":3.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326866","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