Facta Universitatis-Series Electronics and Energetics最新文献

Efficiency and radiative recombination rate enhancement in GaN/AlGaN multi-quantum well-based electron blocking layer free UV-LED for improved luminescence 提高GaN/AlGaN多量子阱无电子阻挡层UV-LED的发光效率和辐射复合率

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301091d

Samadrita Das, T. Lenka, F. Talukdar, R. Velpula, H. Nguyen

{"title":"Efficiency and radiative recombination rate enhancement in GaN/AlGaN multi-quantum well-based electron blocking layer free UV-LED for improved luminescence","authors":"Samadrita Das, T. Lenka, F. Talukdar, R. Velpula, H. Nguyen","doi":"10.2298/fuee2301091d","DOIUrl":"https://doi.org/10.2298/fuee2301091d","url":null,"abstract":"In this paper, an electron blocking layer (EBL) free GaN/AlGaN light emitting diode (LED) is designed using Atlas TCAD with graded composition in the quantum barriers of the active region. The device has a GaN buffer layer incorporated in a c-plane for better carrier transportation and low efficiency droop. The proposed LED has quantum barriers with aluminium composition graded from 20% to ~2% per triangular, whereas the conventional has square barriers. The resulted structures exhibit significantly reduced electron leakage and improved hole injection into the active region, thus generating higher radiative recombination. The simulation outcomes exhibit the highest internal quantum efficiency (IQE) (48.4%) indicating a significant rise compared to the conventional LED. The designed EBL free LED with graded quantum barrier structure acquires substantially minimized efficiency droop of ~7.72% at 60 mA. Our study shows that the proposed structure has improved radiative recombination by ~136.7%, reduced electron leakage, and enhanced optical power by ~8.084% at 60 mA injected current as compared to conventional GaN/AlGaN EBL LED structure.","PeriodicalId":44296,"journal":{"name":"Facta Universitatis-Series Electronics and Energetics","volume":"31 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90787993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Performance analysis of FinFET based inverter, NAND and NOR circuits at 10 NM,7 NM and 5 NM node technologies 基于FinFET的逆变器、NAND和NOR电路在10nm、7nm和5nm节点技术下的性能分析

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301001l

A. Lazzaz, K. Bousbahi, Mustapha Ghamnia

{"title":"Performance analysis of FinFET based inverter, NAND and NOR circuits at 10 NM,7 NM and 5 NM node technologies","authors":"A. Lazzaz, K. Bousbahi, Mustapha Ghamnia","doi":"10.2298/fuee2301001l","DOIUrl":"https://doi.org/10.2298/fuee2301001l","url":null,"abstract":"Advancement in the semiconductor industry has transformed modern society. A miniaturization of a silicon transistor is continuing following Moore?s empirical law. The planar metal-oxide semiconductor field effect transistor (MOSFET) structure has reached its limit in terms of technological node reduction. To ensure the continuation of CMOS scaling and to overcome the Short Channel Effect (SCE) issues, a new MOS structure known as Fin field-effect transistor (FinFET) has been introduced and has led to significant performance enhancements. This paper presents a comparative study of CMOS gates designed with FinFET 10 nm, 7 nm and 5 nm technology nodes. Electrical parameters like the maximum switching current ION, the leakage current IOFF, and the performance ratio ION/IOFF for N and P FinFET with different nodes are presented in this simulation. The aim and the novelty of this paper is to extract the operating frequency for CMOS circuits using Quantum and Stress effects implemented in the Spice parameters on the latest Microwind software. The simulation results show a fitting with experimental data for FinFET N and P 10 nm strctures using quantum correction. Finally, we have demonstrate that FinFET 5 nm can reach a minimum time delay of td=1.4 ps for CMOS NOT gate and td=1 ps for CMOS NOR gate to improve Integrated Circuits IC.","PeriodicalId":44296,"journal":{"name":"Facta Universitatis-Series Electronics and Energetics","volume":"44 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81346533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual band MIMO antenna for LTE, 4G and sub-6 GHz 5G applications 用于LTE, 4G和sub-6 GHz 5G应用的双频MIMO天线

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301043r

Pinku Ranjan, Swati Yadav, A. Bage

引用次数: 0

Machine learning assisted optimization and its application to hybrid dielectric resonator antenna design 机器学习辅助优化及其在混合介质谐振器天线设计中的应用

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301031r

Pinku Ranjan, Harshit Gupta, Swati Yadav, Anand Sharma

引用次数: 2

Design and implementation of digital controller in delta domain for buck converter buck变换器δ域数字控制器的设计与实现

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301103b

Arka Biswas, A. Mondal, P. Sarkar

{"title":"Design and implementation of digital controller in delta domain for buck converter","authors":"Arka Biswas, A. Mondal, P. Sarkar","doi":"10.2298/fuee2301103b","DOIUrl":"https://doi.org/10.2298/fuee2301103b","url":null,"abstract":"This paper presents the design and implementation of a discrete-time controller for a DC-DC Buck converter in the complex delta domain. Whenever any continuous-time system is sampled to get a corresponding discrete-time system with a very high sampling rate, the shift operator parameterized discrete-time system fails to provide meaningful information. There is another discrete-time operator called delta operator. In the delta operator parameterized discrete-time system, the discrete-time results and continuous-time results can be obtained hand to hand, rather than in two special cases at a very high sampling rate. The superior property of the delta operator is capitalized in this paper to design the proposed controller in the discrete domain. The Proportional plus Integral (PI) controller designed in the delta domain is used to maintain the output voltage of the Buck converter at the load end for varying load and varying supply voltage conditions. The controller is designed and implemented using the DS1202 dSPACE board. The output voltage of the Buck converter is scaled to feed to the onboard analogue to digital converter of DS1202. Under the different disturbances, the error between the desired output voltage and the actual output voltage is measured and the delta PI controller is used to manipulate the duty cycle of the converter. The duty cycle of this pulse width modulation (PWM) signal is generated using a DS1202 board and is applied to the gate of the Metal Oxide Semiconductor field-effect transistor (MOSFET) via a suitable driver such that the output voltage of the Buck converter remains at its desired value.","PeriodicalId":44296,"journal":{"name":"Facta Universitatis-Series Electronics and Energetics","volume":"10 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88803897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Frequency analysis of the typical impulse voltage and current waveshapes of test generators 测试发电机的典型冲击电压和电流波形的频率分析

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301077j

V. Javor

引用次数: 0

Performance of wearable circularly polarized antenna on different high frequency substrates for dual-band wireless applications 双频无线应用中不同高频基板上可穿戴圆极化天线的性能

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301121b

Rama Basupalli, N. Darimireddy, Rajasekhar Nalanagula, Sujatha Mandala

{"title":"Performance of wearable circularly polarized antenna on different high frequency substrates for dual-band wireless applications","authors":"Rama Basupalli, N. Darimireddy, Rajasekhar Nalanagula, Sujatha Mandala","doi":"10.2298/fuee2301121b","DOIUrl":"https://doi.org/10.2298/fuee2301121b","url":null,"abstract":"This paper proposes the effect of different dielectric constants to construct a microstrip patch antenna deployed on Jean's textile covering military wireless applications. Initially, the structure is designed with double L-shaped slits inserted on both sides of the patch with an FR4 dielectric constant of 4.4. Antenna dimensions are 40 ? 25 mm2, which is miniature compared to the wave's length (?) at the desired operating frequency. The proposed antenna performance in terms of simulated parameters such as gain in dBi, reflection loss (S11), directivity, and patch antenna radiation efficiency are executed by the CST MW EM simulator. However, the conventional way of this design with FR4 may not be so reliable when it is designed on Jean's substrate. Besides all the above parameters extracted from the simulator should hold a low value to implement a high-performance deployed wearable antenna. The paper's outcome shows the importance of simulations and measurements undertaken for the proposed antenna assuming both the dielectric constants of FR4 and Jeans cloth material (with ?r of 1.7). The main contribution of the antenna is to resonate at the frequencies of 3.17 GHz with circular polarization and 5.04 GHz with linear polarization. The antenna prototype is described, and its performance is validated using measurements. The proposed structure also provides a better enhancement in terms of 10-dB impedance bandwidth, with an average gain of 5 dBi.","PeriodicalId":44296,"journal":{"name":"Facta Universitatis-Series Electronics and Energetics","volume":"48 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76007939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal power management of DGS and DSTATCOM using improved Ali Baba and the forty thieves optimizer DGS和DSTATCOM的优化电源管理使用改进的阿里巴巴和四十贼优化器

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301053m

B. Mahdad

{"title":"Optimal power management of DGS and DSTATCOM using improved Ali Baba and the forty thieves optimizer","authors":"B. Mahdad","doi":"10.2298/fuee2301053m","DOIUrl":"https://doi.org/10.2298/fuee2301053m","url":null,"abstract":"In this study an improved Ali Baba and the forty thieves Optimizer (IAFT) is proposed and successfully adapted and applied to enhance the technical performances of radial distribution network (RDN). The standard AFT governed by two sensible parameters to balance the exploration and the exploitation stages. In the proposed variant a modification is introduced using sine and cosine functions to create flexible balance between Intensification and diversification during search process. The proposed variant namely IAFT applied to solve various single and combined objective functions such as the improvement of total power losses (TPL), the minimization of total voltage deviation and the maximization of the loading capacity (LC) under fixed load and considering the random aspect of loads. The exchange of active powers is elaborated by integration of multi distribution generation based photovoltaic systems (PV), otherwise the optimal management of reactive power is achieved by the installation of multi DSTATCOM. The efficiency and robustness of the proposed variant validated on two RDN, the 33-Bus and the 69-Bus. The qualities of objective functions achieved and the statistical analysis elaborated compared to results achieved using several recent metaheuristic methods demonstrate the competitive aspect of the proposed IAFT in solving with accuracy various practical problems related to optimal power management of RDN.","PeriodicalId":44296,"journal":{"name":"Facta Universitatis-Series Electronics and Energetics","volume":"25 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87395196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of finite dimensions on the sensing performance of terahertz metamaterial absorber 有限尺寸对太赫兹超材料吸收器传感性能的影响

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Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301017k

Anja Kovacevic, M. Potrebić, D. Tosic

引用次数: 0

Discrete time quasi-sliding mode-based control of LCL grid inverters 基于离散时间准滑模的LCL电网逆变器控制

IF 0.6

Facta Universitatis-Series Electronics and Energetics Pub Date : 2023-01-01 DOI: 10.2298/fuee2301133p

M. Petronijević, C. Milosavljevic, B. Veselić, S. Huseinbegović, B. Perunicic

{"title":"Discrete time quasi-sliding mode-based control of LCL grid inverters","authors":"M. Petronijević, C. Milosavljevic, B. Veselić, S. Huseinbegović, B. Perunicic","doi":"10.2298/fuee2301133p","DOIUrl":"https://doi.org/10.2298/fuee2301133p","url":null,"abstract":"Application of a discrete time (DT) sliding mode controller (SMC) in the control structure of the primary controller of a three-phase LCL grid inverter is presented. The design of the inverter side current control loop is performed using a DT linear model of the grid inverter with LCL filter at output terminals. The DT quasi-sliding mode control was used due to its robustness to external and parametric disturbances. Additionally, in order to improve disturbance compensation, a disturbance compensator is also implemented. Also, a specific anti-windup mechanism has been implemented in the structure of the controller to prevent large overshoots in the inverter response in case of random disturbances of grid voltages, or sudden changes in the commanded power. The control of the grid inverter is realized in the reference system synchronized with the voltage of the power grid. The development of the digitally realized control subsystem is presented in detail, starting from theoretical considerations, through computer simulations to experimental tests. The experimental results confirm good static and dynamic performance.","PeriodicalId":44296,"journal":{"name":"Facta Universitatis-Series Electronics and Energetics","volume":"46 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80655279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1