Circuit World最新文献_第6页

Experimental verification of STATCOM based on quasi impedance source inverter for power quality enhancement in the hybrid distributed generation system 基于准阻抗源逆变器的STATCOM在混合分布式发电系统中提高电能质量的实验验证

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-03-30 DOI: 10.1108/cw-05-2021-0133

K. R., Ramakrishnan C., S. S

PurposeThis paper aims to introduce the quasi impedance source inverter (qZSI)-based static compensator (STATCOM), which is incorporated into the hybrid distributed power generation system for enhancement of power quality. The distributed power generation system includes the photovoltaic (PV), wind energy conversion system (WECS) and battery energy storage system.Design/methodology/approachThe WECS is used by the self-excited induction generator (SEIG) and the flywheel energy storage system (FESS). To regulate its terminal voltage and frequency, the SEIG requires adjustable volt-ampere reactive (VAR). A combination of a STATCOM and a fixed condenser bank usually serves to satisfy the VAR demand. The maximum correntropy criterion-based adaptive filter technique (AFT) is proposed to control the qZSI-STATCOM and to guarantee that the voltage at the SEIG terminal is harmonic-free while providing non-linear three-phase and single-phase loads.FindingsThe coordinated operation of the suggested voltage control and flywheel control systems ensures that load voltage and frequency are retained in their respective values at very low harmonic distortions regardless of wind speed and load variation. The simulation and experimental studies are carried out under different load conditions to validate the efficiencies of the PV-assisted STATCOM.Originality/valueTo improve system stability and minimize total costs, extra load current sensors can also be avoided. This paper proposes to control the SEIG terminal voltage and harmonic elimination in the standalone WECS systems using maximum correntropy criterion-based AFT with a fuzzy logic controller.

目的本文旨在介绍一种基于准阻抗源逆变器（qZSI）的静态补偿器（STATCOM），该补偿器被纳入混合分布式发电系统中，以提高电能质量。分布式发电系统包括光伏（PV）、风能转换系统（WECS）和电池储能系统。设计/方法/方法自激感应发电机（SEIG）和飞轮储能系统（FESS）使用WECS。为了调节其终端电压和频率，SEIG需要可调节的无功伏安（VAR）。STATCOM和固定冷凝器组的组合通常用于满足VAR需求。提出了基于最大相关准则的自适应滤波技术（AFT）来控制qZSI STATCOM，并在提供非线性三相和单相负载的同时保证SEIG端子的电压无谐波。发现建议的电压控制和飞轮控制系统的协调操作确保了负载电压和频率在非常低的谐波失真下保持在各自的值，而与风速和负载变化无关。模拟和实验研究是在不同的负载条件下进行的，以验证光伏辅助STATCOM的效率。原始性/值为了提高系统稳定性并最大限度地降低总成本，还可以避免额外的负载电流传感器。本文提出在独立的WECS系统中，使用基于最大相关准则的AFT和模糊逻辑控制器来控制SEIG端电压和谐波消除。

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引用次数: 0

Comparative study on minimization of conduction and switching losses in cascaded multilevel inverter via reduced switches and equal voltage source-sharing 减少开关和等电压源共享最小化级联多电平逆变器导通和开关损耗的比较研究

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-03-23 DOI: 10.1108/cw-08-2021-0222

Dania Batool, Qandeel Malik, Tila Muhammad, Adnan Umar Khan, Jonghoon Kim

PurposeMultilevel inverters play a major role in the development of high-power industrial applications. In traditional low-level inverters (e.g. 2-level), the switching frequency is restricted and the harmonic spectrum of the system is hard to meet power requirements. Similarly, high-level inverters consist of a large number of switches, complex modulation techniques and complex hardware architecture, which results in high power loss and a significant amount of harmonic distortion. Furthermore, it is a must to ensure that every switch experiences the same stress of voltage and current. The purpose of this paper is to present an inverter topology with lower conduction and switching losses via reduced number of switches and equal voltage source-sharing technique.Design/methodology/approachHerein, the authors present a cascaded multilevel inverter having less power switches, a simple modulation technique and an equal voltage source-sharing phenomenon implementation.FindingsThe modulation technique becomes more complex when equal voltage source-sharing is to be implemented. In this study, a novel topology for the multilevel inverter with fewer switches, novel modulation technique, equal voltage source-sharing and Inductor-Capacitor-Inductor filter implementation is demonstrated to the reduce harmonic spectrum and power losses of the proposed system.Originality/valueThe nine-level inverter design is validated using software simulations and hardware prototype testing; the power losses of the proposed inverter design are elaborated and compared with the traditional approach.

目的多电平逆变器在大功率工业应用的发展中起着重要作用。在传统的低电平逆变器(如2电平)中，开关频率受到限制，系统的谐波频谱难以满足功率要求。同样，高级逆变器由大量的开关、复杂的调制技术和复杂的硬件架构组成，这导致高功率损耗和大量的谐波失真。此外，必须确保每个开关承受相同的电压和电流应力。本文的目的是通过减少开关数量和等电压源共享技术，提出一种具有较低导通和开关损耗的逆变器拓扑结构。设计/方法/方法在此，作者提出了一种级联多电平逆变器，具有较少的功率开关，简单的调制技术和等电压源共享现象的实现。发现当实现等电压源共享时，调制技术变得更加复杂。在这项研究中，一种新颖的多电平逆变器拓扑结构采用了更少的开关，新颖的调制技术，等电压源共享和电感-电容-电感滤波器的实现，以降低所提出系统的谐波频谱和功率损耗。通过软件仿真和硬件样机测试验证了九电平逆变器的设计;阐述了该逆变器设计的功率损耗，并与传统方法进行了比较。

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引用次数: 2

A new tri-source symmetric cascaded multilevel inverter topology with reduced power components 一种新的具有减少功率分量的三源对称级联多级逆变器拓扑

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-02-28 DOI: 10.1108/cw-06-2021-0184

J. Pradeep, K. Vengadakrishnan, Anbarasan Palani, Thamizharasan Sandirasegarane

PurposeMultilevel inverters become very popular in medium voltage applications owing to their inherent capability of reconciling stepped voltage waveform with reduced harmonic distortion and electromagnetic interference. They have several disadvantages like more number of switching devices required and devices with high voltage blocking and need additional dc sources count to engender particular voltage. So this paper aims to propose a novel tri-source symmetric cascaded multilevel inverter topology with reduced number of switching components and dc sources.Design/methodology/approachA novel multilevel inverter has been suggested in this study, offering minimal switch count in the conduction channel for the desired voltage level under symmetric and asymmetric configurations. This novel topology is optimized to prompt enormous output voltage levels by employing constant power switches count and/or dc sources of voltage. The topology claims its advantages in generating higher voltage levels with lesser number of voltage sources, gate drivers and dc voltage sources.FindingsThe consummation of the proposed arrangement is verified in Matlab/Simulink R2015b, and an experimental prototype for 7-level, 13-level, 21-level, 29-level, 25-level and 49-level operation modes is constructed to validate the simulation results.Originality/valueThe proposed topology operated with six new algorithms for asymmetrical configuration to propel increased number of voltage levels with reduced power components.

多电平逆变器由于其固有的协调阶跃电压波形的能力，减少了谐波失真和电磁干扰，在中压应用中非常流行。它们有几个缺点，比如需要更多数量的开关器件和具有高电压阻塞的器件，并且需要额外的直流源计数来产生特定的电压。因此，本文旨在提出一种新的三源对称级联多级逆变器拓扑结构，减少开关元件和直流电源的数量。设计/方法/方法本研究提出了一种新型多电平逆变器，在对称和非对称配置下，为所需的电压电平在传导通道中提供最小的开关数量。通过采用恒定功率开关计数和/或直流电压源，对这种新型拓扑结构进行了优化，以产生巨大的输出电压电平。该拓扑结构声称其在用较少数量的电压源、栅极驱动器和直流电压源产生较高电压电平方面的优势。在Matlab/Simulink R2015b中验证了所提出的安排的完善性，并构建了7级、13级、21级、29级、25级和49级操作模式的实验样机来验证仿真结果。独创性/价值所提出的拓扑结构采用六种新算法进行不对称配置，以减少功率分量，推动电压电平的增加。

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引用次数: 3

Design and fabrication of rotary magnetostrictvie energy harvester for knee-joint wearable applications 膝关节可穿戴旋转式磁致伸缩能量采集器的设计与制造

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-02-17 DOI: 10.1108/cw-01-2021-0002

Baiping Yan, Dazhuo Huang, Junjie Hong, Chengming Zhang

PurposeThis paper aims to present the design and fabrication of a rotary magnetostrictive energy generator, using to harvest the rotation energy of human knee joint.Design/methodology/approachA rotary magnetostrictive energy generator is presented in this paper. The harvester consists of six movable flat Terfenol-D rods, surround by the picked-up coils respective, and alternate permanent magnet (PM) array fixed in the upper cover of the stator. The harvester rotates like as a stepper motor, which has rotary electromagnetic power generating effect and impacted magnetostrictive power generating effect in its rotation. Modeling and simulation are used to validate the concept. A prototype of harvester is fabricated and subjected to the experimental characterization.FindingsThe size of proposed structure is control as 77 cm3, and its mass is about 0.21 kg. Huge induced voltage generated in the short-time impact situation, and that induced voltage in the harvester can up to 18.6 V at 0.32 s stepper rotation. Also, the presented harvester has good harvesting effects at low frequency human walking situation, which is suitable to be used for future researches of wearable knee joint applications.Originality/valueA new concept of magnetostrictive harvester is presneted, which will be benefit for the application of human knee joint wearable. Also, this concept will give us more idea for collection of human movement energy.

目的设计和制作一种旋转磁致伸缩能量发生器，用于采集人体膝关节的旋转能量。本文介绍了一种旋转磁致伸缩能量发生器。收集器由六个可移动的平面Terfenol-D棒组成，分别由拾取线圈环绕，定子上盖固定有交替永磁(PM)阵列。收割机像步进电机一样旋转，其旋转具有旋转电磁发电效果和冲击磁致伸缩发电效果。通过建模和仿真验证了该概念。制作了收割机样机并进行了实验表征。研究结果:结构尺寸控制在77 cm3，质量约0.21 kg。短时间冲击时产生巨大的感应电压，在步进旋转0.32 s时，收割机的感应电压可达18.6 V。此外，该采集器在人体低频行走情况下具有良好的采集效果，适合于未来可穿戴膝关节应用的研究。提出了一种磁致伸缩收割机的新概念，这将有利于人体膝关节可穿戴设备的应用。同时，这一概念也将为人体运动能量的收集提供更多的思路。

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引用次数: 0

Optoelectronic characterization of laser diodes with different electrode structures 不同电极结构激光二极管的光电特性

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-02-15 DOI: 10.1108/cw-08-2020-0193

Tao Lin, Ya-ning Li, R. Zhao, Zekun Ma, Jia-nan Xie

PurposeThis paper aims to improve the device performance from the perspective of reducing ohmic contact resistance; the effects of different electrode structures and alloying parameters on the series resistance and power-current-voltage of laser diodes (LDs) have been investigated in this paper.Design/methodology/approachFour groups of p-GaAs side metal electrodes with different metal layer arrangements and thicknesses are fabricated for the investigated LDs. The investigated p-GaAs side electrodes are based on Ti/Pt/Au material and the n-GaAs side metal electrodes all have a same structure of Ni/Ge/Ni/Au/Ti/Pt/Au. The LDs with different electrodes were alloyed at 380°C for 60 s and 420°C for 80 s.FindingsThe experimental results show that the series resistance decreases by 14%–20%, the output power increases by 2%–2.2% and the conversion efficiency increases by 1.69%–2.16% for the LDs prepared with optimized alloying parameters (420°C for 80 s). The laser diode with p-GaAs side Ti/Pt/Au electrode of 30/70/100 nm has the best device characteristics under both annealing conditions.Originality/valueThe utilization of this improvement on ohmic contact property in electrode is not only very important for upgrading high-power LDs but also helpful for GaAs-based microelectronic devices such as HBT and monolithic microwave integrated circuit.

本文旨在从降低欧姆接触电阻的角度提高器件性能;本文研究了不同电极结构和合金参数对激光二极管串联电阻和功率电压的影响。设计/方法/方法制备了四组具有不同金属层排列和厚度的p-GaAs侧金属电极用于所研究的ld。所研究的p-GaAs侧电极均基于Ti/Pt/Au材料，n-GaAs侧电极均具有相同的Ni/Ge/Ni/Au/Ti/Pt/Au结构。不同电极的ld分别在380°C和420°C条件下合金化60 s和80 s。结果表明:采用优化的合金参数(420℃，80 s)制备的ld串联电阻降低14% ~ 20%，输出功率提高2% ~ 2.2%，转换效率提高1.69% ~ 2.16%。在两种退火条件下，p-GaAs侧Ti/Pt/Au电极为30/70/100 nm的激光二极管具有最佳的器件特性。利用这种电极欧姆接触特性的改进不仅对高功率ld的升级非常重要，而且对基于gaas的微电子器件(如HBT和单片微波集成电路)也有帮助。

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引用次数: 0

Low-power and low-energy CNFET-based approximate full adder cell for image processing applications 用于图像处理应用的基于低功率和低能量CNFET的近似全加器单元

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-02-07 DOI: 10.1108/cw-05-2021-0128

Yavar Safaei Mehrabani, Mojtaba Maleknejad, Danial Rostami, Hamidreza Uoosefian

PurposeFull adder cells are building blocks of arithmetic circuits and affect the performance of the entire digital system. The purpose of this study is to provide a low-power and high-performance full adder cell.Design/methodology/approachApproximate computing is a novel paradigm that is used to design low-power and high-performance circuits. In this paper, a novel 1-bit approximate full adder cell is presented using the combination of complementary metal-oxide-semiconductor, transmission gate and pass transistor logic styles.FindingsSimulation results confirm the superiority of the proposed design in terms of power consumption and power–delay product (PDP) criteria compared to state-of-the-art circuits. Also, the proposed full adder cell is applied in an 8-bit ripple carry adder to accomplish image processing applications including image blending, motion detection and edge detection. The results confirm that the proposed cell has premier compromise and outperforms its counterparts.Originality/valueThe proposed cell consists of only 11 transistors and decreases the switching activity remarkably. Therefore, it is a low-power and low-PDP cell.

目的全加法器单元是算术电路的组成部分，影响整个数字系统的性能。本研究的目的是提供一个低功耗、高性能的全加法器单元。近似计算是一种用于设计低功耗和高性能电路的新范式。本文提出了一种新型的1位近似全加法器单元，采用互补金属氧化物半导体、传输栅极和通管逻辑方式相结合。仿真结果证实了与最先进的电路相比，所提出的设计在功耗和功率延迟产品(PDP)标准方面的优越性。并将所提出的全加法器单元应用于8位纹波进位加法器中，以完成图像混合、运动检测和边缘检测等图像处理应用。结果证实，所提出的细胞具有首要的妥协和优于其同类。独创性/价值所提出的电池仅由11个晶体管组成，并显著降低了开关活动。因此，它是一个低功耗和低pdp电池。

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引用次数: 0

Study on load monitoring and demand side management strategy based on Elman neural network optimized by sparrow search algorithm 基于麻雀搜索算法优化的Elman神经网络负荷监测与需求侧管理策略研究

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-01-27 DOI: 10.1108/cw-07-2021-0199

Yuanyuan Fan, T. Sui, K. Peng, Yingjun Sang, Fei Huang

PurposeThis paper aims to collect the energy consumption data and carry out energy consumption analysis of chemical enterprises, which is helpful to grasp the working conditions of each equipment accurately and to perfect the demand side management (DSM) for the user in the terminal.Design/methodology/approachThe paper proposes a load monitoring system of chemical enterprises to collect the energy consumption data and carry out energy consumption analysis. An Elman neural network based on sparrow search algorithm is proposed to predict the power consumption change and distribution trend of enterprises in the future production cycle. The calculation efficiency and prediction accuracy have been significantly improved.FindingsThe paper analyzes the energy saving effect of energy efficiency management as well as “avoiding peak and filling valley” measures, and reasonable control requirements and assumed conditions are put forward to study the operability of enterprise energy saving measures from the DSM.Research limitations/implicationsBecause of the chosen enterprise data, the prediction accuracy needs to be further improved. Therefore, researchers are encouraged to test the proposed methodology further.Practical implicationsThe paper includes implications for the development of energy consumption analysis and load forecasting of chemical enterprises and perfects the DSM for the user.Originality/valueThis paper fulfills an identified need to study how to forecast the power load and improve the management efficiency of energy consumption.

目的收集化工企业能耗数据，开展化工企业能耗分析，有助于准确掌握各设备的工作状况，完善终端用户的需求侧管理(DSM)。设计/方法/途径本文提出了一种化工企业负荷监测系统，用于收集化工企业能耗数据并进行能耗分析。提出了一种基于麻雀搜索算法的Elman神经网络，用于预测企业未来生产周期的用电量变化和分布趋势。计算效率和预测精度显著提高。研究结果分析了能效管理和“避峰填谷”措施的节能效果，提出了合理的控制要求和假设条件，从DSM角度研究了企业节能措施的可操作性。研究局限/启示由于所选择的企业数据，预测精度有待进一步提高。因此，鼓励研究人员进一步测试所提出的方法。实际意义本文对化工企业能耗分析和负荷预测的发展具有启示意义，对用户需求侧管理进行了完善。本文研究如何预测电力负荷，提高能耗管理效率，满足了人们的需求。

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引用次数: 3

A fast and cost-effective short circuit protection scheme for low-power converters for small-scale photovoltaic application 用于小型光伏应用的低功率转换器的快速且经济高效的短路保护方案

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-01-21 DOI: 10.1108/cw-11-2021-0281

M. Ebadi, Negin Abbasi, Hamidreza Maghsoudi

PurposeThis paper aims to propose an integrated protection scheme for converters of a low-power, low-cost photovoltaic system. Power electronic converters use a variety of methods to limit overload and fault current. The use of insulated and non-insulated sensors along with additional circuits to detect and limit fault current can cause current to be limited or completely cut off before damage to semiconductor devices. In addition, fuses that have slower performance are used as backup for any type of protection.Design/methodology/approachFirst, all the candidate points for protection are investigated. In this paper, after examining the performance of glass fuses as linear resistors, they are used as a current feedback element. A simple, isolated and reliable circuit for fault detection at various points of the system has been proposed that can be implemented and operated in single shot or auto-reclose operating mode.FindingsThe experimental results of this circuit on a dc/dc converter and an H-bridge inverter show that it can cut off all instantaneous short circuit errors in less than 50 µs and prevent damage to the semiconductor switch.Originality/valueIn low-cost and low-power converters, it is usually not cost-effective to use complex and expensive devices. For this reason, these converters are more vulnerable to faults. On the other hand, in complex systems such as photovoltaics, several converters are used simultaneously in different parts, and the occurrence of a fault in each of them causes the whole system to fail.

本文旨在提出一种低功耗、低成本光伏系统变流器的综合保护方案。电力电子变换器使用多种方法来限制过载和故障电流。使用绝缘和非绝缘传感器以及附加电路来检测和限制故障电流，可以在损坏半导体器件之前限制或完全切断电流。此外，性能较慢的保险丝被用作任何类型保护的备份。设计/方法/方法首先，对所有候选保护点进行调查。本文在考察了玻璃熔断器作为线性电阻的性能后，将其用作电流反馈元件。提出了一种简单、隔离、可靠的系统各点故障检测电路，可实现单次或自动合闸工作模式。在dc/dc变换器和h桥逆变器上的实验结果表明，该电路能在小于50µs的时间内切断所有瞬时短路误差，防止对半导体开关的损坏。原创性/价值在低成本和低功耗转换器中，使用复杂和昂贵的器件通常不具有成本效益。因此，这些转换器更容易出现故障。另一方面，在光伏等复杂系统中，多个变流器在不同部位同时使用，其中一个发生故障就会导致整个系统失效。

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引用次数: 0

Pulse density modulation control-based multi-load handling three leg inverter for cooking applications 用于烹饪应用的基于脉冲密度调制控制的多负载三腿逆变器

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2022-01-11 DOI: 10.1108/cw-07-2021-0187

P. Vishnuram, R. Gunabalan

PurposeInduction heating applications aided by power electronic control have become very attractive in the recent past. For cooking applications, power electronics circuits are very suitable to feed power to multi loads with an appropriate control technique. The purpose of this paper is to develop a three leg inverter to feed power to three loads simultaneously and independently.Design/methodology/approachPulse density modulation control technique is used to control the output power independently with constant switching frequency.FindingsMulti-load handling converter with independent power control is achieved with reduced number of switching devices (two switches/per load) with simple control strategy.Originality/valueThe proposed system is simulated in MATLAB/Simulink, and the thermal analysis is carried out in COMSOL multi-physics software. The hardware realisation is performed for a 1 kW prototype with 20 kHz switching frequency and 10 kHz pulse density modulation frequency. PIC16F877A microcontroller is used to validate the experimental results for various values of control signals (DPDM). The simulation and experimental results are in good agreement and validates the developed system.

目的电力电子控制辅助的感应加热应用在最近变得非常有吸引力。对于烹饪应用，电力电子电路非常适合通过适当的控制技术向多个负载供电。本文的目的是开发一种三腿逆变器，以同时独立地向三个负载供电。设计/方法/方法脉冲密度调制控制技术用于在恒定开关频率下独立控制输出功率。Findings具有独立功率控制的多负载处理转换器通过简单的控制策略减少了开关设备的数量（每个负载两个开关）。独创性/价值在MATLAB/Simulink中对所提出的系统进行了仿真，并在COMSOL多物理软件中进行了热分析。硬件实现针对1 kW原型，20 kHz开关频率和10 kHz脉冲密度调制频率。使用PIC16F877A单片机对各种控制信号（DPDM）值的实验结果进行了验证。仿真结果与实验结果吻合较好，验证了所开发的系统的有效性。

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引用次数: 0

A compact high gain wideband millimeter wave 1 × 2 array antenna for 26/28 GHz 5G applications 一种紧凑型高增益宽带毫米波1 × 2阵列天线，适用于26/28 GHz 5G应用

IF 0.9 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World

Pub Date : 2021-12-21 DOI: 10.1108/cw-10-2021-0255

Yousra Ghazaoui, Mohammed EL Ghzaoui, Sudipta Das, BTP Madhav, Ali el Alami

Purpose

This paper aims to present the design, fabrication and analysis of a wideband, enhanced gain 1 × 2 patch antenna array with a simple profile structure to meet the desired antenna traits, such as wide bandwidth, high gain and directional patterns expected for the upcoming fifth-generation (5G) wireless applications in the millimeter wave band. To enhance these parameters (bandwidth and gain), a new antenna geometry by using a T-junction power divider is presented.

Design/methodology/approach

The theory behind this paper is connected with advancements in the 5G communications related to antennas. The methodology used in this work is to design a high gain array antenna and to identify the best possible power divider to deliver the power in an optimized way. The design methodology adopts several steps like the selection of proper substrate material as per the design specification, size of the antenna as per the frequency of operation and application-specific environment condition. The simulation has been performed on the designed antenna in the electromagnetic simulation tool (high-frequency structure simulator [HFSS]), and optimization has been done with parametric analysis, and then the final array antenna model is proposed. The proposed array contains 2-patch elements excited by one port adapted to 50 Ω through a T-junction power divider. The 1 × 2 array configuration with the suggested geometry helps to improve the overall gain of the antenna, and the implementation of the T-junction power divider provides enhanced bandwidth. The proposed array designed using a 1.6 mm thick flame retardant substrate occupies a compact area of 14 × 12.14 mm².

Findings

The prototype of the array antenna is fabricated and measured to validate the design concept. A good agreement has been reached between the measured and simulated antenna parameters. The measured results confirm its wideband and high gain characteristics, covering 24.77–28.80 GHz for S₁₁= –10 dB with a peak gain of about 15.16 dB at 27.65 GHz.

Originality/value

The proposed antenna covers the bandwidth requirements of the 26 GHz n258 band (24.25–27.50 GHz) to be deployed in the UK and Europe. The suggested antenna structure also covers the federal communications commission (FCC)-regulated 28 GHz n261 band (27.5–28.35 GHz) to be deployed in America and Canada. The low profile, compact size, simple structure, wide bandwidth, high gain and desired directional radiation patterns confirm the applicability of the suggested array antenna for the upcoming 5 G wireless systems.

为了满足即将到来的第五代(5G)无线应用在毫米波频段的宽带、高增益和方向图等天线特性，设计、制造和分析了一种具有简单轮廓结构的宽带、增强增益1 × 2贴片天线阵列。为了提高这些参数(带宽和增益)，提出了一种使用t结功率分配器的新天线几何形状。设计/方法/方法本文背后的理论与天线相关的5G通信的进步有关。在这项工作中使用的方法是设计一个高增益阵列天线，并确定最佳的功率分配器，以优化的方式提供功率。设计方法采用几个步骤，如根据设计规范选择合适的衬底材料，根据工作频率和特定应用环境条件选择天线尺寸。在电磁仿真工具(高频结构模拟器[HFSS])中对所设计的天线进行仿真，并通过参数化分析进行优化，最后提出最终的阵列天线模型。所提出的阵列包含2个贴片元件，通过一个t结功率分压器通过一个适应50 Ω的端口激发。采用建议几何形状的1 × 2阵列配置有助于提高天线的整体增益，t结功率分配器的实现提供了增强的带宽。采用1.6 mm厚的阻燃衬底设计的阵列占地面积为14 × 12.14 mm2。制作了阵列天线的原型并进行了测量以验证设计概念。实测天线参数与仿真天线参数吻合较好。实测结果证实了其宽带高增益特性，在S11= -10 dB时覆盖24.77 ~ 28.80 GHz，在27.65 GHz时峰值增益约为15.16 dB。提议的天线涵盖了将在英国和欧洲部署的26 GHz n258频段(24.25-27.50 GHz)的带宽要求。拟议的天线结构还包括联邦通信委员会(FCC)规定的28ghz n261频段(27.5-28.35 GHz)，将部署在美国和加拿大。低姿态、紧凑的尺寸、简单的结构、宽带宽、高增益和理想的定向辐射模式证实了所建议的阵列天线在即将到来的5g无线系统中的适用性。

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引用次数: 0