The Applied Computational Electromagnetics Society Journal (ACES)最新文献_第2页

Composite Scattering Study of Layered Rough Surface withTarget based on CCIA 基于 CCIA 的带目标分层粗糙表面复合散射研究

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381105

Jiaguo Zhang, Huan Wei

{"title":"Composite Scattering Study of Layered Rough Surface withTarget based on CCIA","authors":"Jiaguo Zhang, Huan Wei","doi":"10.13052/2023.aces.j.381105","DOIUrl":"https://doi.org/10.13052/2023.aces.j.381105","url":null,"abstract":"In this paper, a fast Cross Coupling iterative Approach (CCIA) is proposed for studying the composite scattering of the layered rough surfaces with buried target, which uses forward backward method (FBM) to solve the electric field integral equations (EFIE) of the layered rough surface and bi-conjugate gradient method (BI-CG) to solve the EFIE of the target, and the interaction between the rough surface and the target is achieved by updating the excitation term. The algorithm is applied to calculate the composite scattering coefficients of the rough surface with a buried target, the results match with those of the traditional numerical algorithm MOM while the error can be reduced to 10−3 by 6 iterations, and the convergence speed and calculation accuracy meet the requirements. The composite scattering coefficients and Angular Correlation Function (ACF) amplitudes of layered rough surface and dielectric targets with different conditions are calculated, and the effects of various factors such as target size and burial depth on the composite scattering characteristics are discussed. It is found that the buried targets will have a great influence on the scattering characteristics, weakening or neglecting the coupling between them will lead to larger errors. Moreover, the results show that ACF can suppress scattering from rough surfaces well, making the scattering characteristics of the target more obvious, which is important for detecting underground targets.","PeriodicalId":250668,"journal":{"name":"The Applied Computational Electromagnetics Society Journal (ACES)","volume":"111 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140381738","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

Design of a Reconfigurable Band-notched Wideband Antenna using EBG Structures 利用 EBG 结构设计可重构带缺口宽带天线

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381108

Xiaoyan Zhang, Ziao Li, Aiyun Zhan, Y. Mei

{"title":"Design of a Reconfigurable Band-notched Wideband Antenna using EBG Structures","authors":"Xiaoyan Zhang, Ziao Li, Aiyun Zhan, Y. Mei","doi":"10.13052/2023.aces.j.381108","DOIUrl":"https://doi.org/10.13052/2023.aces.j.381108","url":null,"abstract":"A compact WLAN band-notched reconfigurable wideband antenna using two mushroom-like electromagnetic band-gap (EBG) structures is proposed in this paper. It is designed based on a dual wideband microstrip feed patch antenna with operating frequency bands of 2.2-3.7 GHz and 4.8-6 GHz. One of the EBG cells is positioned alongside the feed line, while the other EBG cell is laid on the back of the substrate. The patch or ground of the two EBG units are fed with a stronger current through a ground slot and a parasitic stub respectively, and the connections between the EBG structures and the antenna are controlled by loading a PIN diode with two 56 pF DC blocking capacitors. The advantage of this proposed design is that the antenna and the EBG unit can be designed independently. The proposed antenna has an overall size of 35×46×1.6 mm3. When testing the S11 of the antenna, the influence of the bias circuit on the antenna is also considered. The measured results show that the proposed antenna can generate two notched bands of 2.3-2.49 GHz and 5.11-5.51 GHz of WLAN, and the realized gain in the notch bands can be reduced to -2.65 dBi and -4.55 dBi, respectively, demonstrating its anti-interference characteristics, and can be applied in band notch broadband communication systems or anti-interference communication equipments such as unmanned aerial vehicles and radars.","PeriodicalId":250668,"journal":{"name":"The Applied Computational Electromagnetics Society Journal (ACES)","volume":" 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383635","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

Physics-informed Neural Networks for the Resolution of Analysis Problems in Electromagnetics 用于解决电磁学分析问题的物理信息神经网络

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381102

S. Barmada, P. D. Barba, A. Formisano, M. E. Mognaschi, M. Tucci

引用次数: 0

Analytical Model of an E-core Driver-pickup Coils Probe Applied to Eddy Current Testing of Multilayer Conductor 应用于多层导体涡流测试的 E 型磁芯驱动器-拾取线圈探头的分析模型

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381110

Siquan Zhang

引用次数: 0

Design of a New Balanced Side Slotted Vivaldi Antenna with Director using Genetic Algorithm 利用遗传算法设计带导向器的新型平衡侧开槽维瓦尔第天线

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381107

Xiaoyan Zhang, Yuxu Hu, Aiyun Zhan

{"title":"Design of a New Balanced Side Slotted Vivaldi Antenna with Director using Genetic Algorithm","authors":"Xiaoyan Zhang, Yuxu Hu, Aiyun Zhan","doi":"10.13052/2023.aces.j.381107","DOIUrl":"https://doi.org/10.13052/2023.aces.j.381107","url":null,"abstract":"Generally, side slotting and directional techniques can improve the performance of a conventional Vivaldi antenna (CVA), but the optimal structure and distribution of slots and directors may be irregular or even complex, requiring significant manual effort, thus limiting the design possibilities. In this paper, a genetic algorithm (GA) is introduced to assist in designing and optimizing a new type of balanced side slotted Vivaldi antenna with director (SSVAD). The methods of artificial intelligence make the process of searching for the optimal structure of such a multi-objective and multi-dimensional problem simpler and more diverse. The GA-generated SSVAD antenna consists of a CVA and 34 slots with varying lengths, as well as 5 metal strips. It has a compact size of 38.2×49×0.8 mm3 (or 0.32λL×0.41λL×0.007λL, where λL is the lowest operating frequency of 2.48 GHz). The measured results show that the antenna has a peak gain >0 dBi over 2.48-10.88 GHz and >5 dBi over 4.6-10.88 GHz with S11<-10 dB standard, and exhibits directional characteristics at most of the operating frequencies. Since the measured results are basically consistent with the simulation ones, the effectiveness of the designed scheme has been proven.","PeriodicalId":250668,"journal":{"name":"The Applied Computational Electromagnetics Society Journal (ACES)","volume":" 393","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383171","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

A Parallel 3-D HIE-FDTD Method using the MPI Library 使用 MPI 库的并行三维 HIE-FDTD 方法

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381103

Qin Nan, Chunhui Mou, Juan Chen

引用次数: 0

CPW-Fed UWB-MIMO Antenna with Triple-band Notched and High Isolation using Double Y-shaped Decoupling Structure 采用双 Y 型去耦结构的 CPW-Fed UWB-MIMO 天线，具有三频缺口和高隔离度

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381109

Chenzhu Du, Huanchen Peng

引用次数: 0

Simulation Analysis of Electromagnetic Environment Effect and Shielding Effectiveness for VPX Chassis under Plane Wave Radiation 平面波辐射下 VPX 机箱的电磁环境效应和屏蔽效果仿真分析

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381106

Hongkun Ni, Hong Jiang, Xinbo Li, Qian Jia, Xiaohui Wang

引用次数: 0

Analysis of Moving Bodies with a Direct Finite Difference Time Domain Method 用直接有限差分时域法分析运动物体

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-25 DOI: 10.13052/2023.aces.j.381101

M. Marvasti, H. Boutayeb

{"title":"Analysis of Moving Bodies with a Direct Finite Difference Time Domain Method","authors":"M. Marvasti, H. Boutayeb","doi":"10.13052/2023.aces.j.381101","DOIUrl":"https://doi.org/10.13052/2023.aces.j.381101","url":null,"abstract":"This paper proposes an original and thorough analysis of the behavior of electromagnetic waves in the presence of moving bodies by using the finite difference time domain (FDTD) method. Movements are implemented by changing positions of the objects at each time step, through the classical FDTD time loop. This technique is suitable for non-relativistic speeds, thus for most encountered problems in antennas and propagation domain. The numerical aspects that need to be considered are studied. Then, different bodies in motion are examined: plane wave source with matching resistors, observation point, inclined partially reflecting surface (PRS), line source, and metallic cylinder illuminated by a plane wave. The results are compared with those of special relativity which are considered as the references. Some aspects of special relativity are present in the direct FDTD approach, such as the independence of the velocity of electromagnetic wave propagation with the speed of the source and Lorentz local time (with a different physical interpretation). It is shown that the amplitude of the electric field for a moving plane wave source does not increase with the speed of motion, if the impedance of the source is small. Moreover, for a moving scattering metallic wire, one can observe a phenomenon similar to shock waves.","PeriodicalId":250668,"journal":{"name":"The Applied Computational Electromagnetics Society Journal (ACES)","volume":" 50","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140384486","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

Miniaturized Wideband Circularly Polarized Triangular Patch Antennas based on Characteristic Mode Analysis 基于特性模式分析的小型化宽带圆极化三角形贴片天线

The Applied Computational Electromagnetics Society Journal (ACES) Pub Date : 2024-03-15 DOI: 10.13052/2023.aces.j.381005

Tian-Long Yang, Xiao Zhang, Qiong‐Sen Wu, Tao Yuan

引用次数: 0