International Journal of Antennas and Propagation最新文献_第9页

Retracted: IoT-Based English Translation Teaching from the Perspective of Artificial Intelligence 人工智能视角下基于物联网的英语翻译教学

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-08-09 DOI: 10.1155/2023/9805184

International Journal of Antennas and Propagation

引用次数: 0

Retracted: Exploration of Intelligent Teaching Methods for Ideological and Political Education in Colleges and Universities under the Background of “Mass Entrepreneurship and Innovation” 撤下:“双创”背景下高校思想政治教育智能化教学方法探索

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-08-09 DOI: 10.1155/2023/9842690

International Journal of Antennas and Propagation

引用次数: 0

Retracted: Research on the Integration Method of Character Costume Culture in Dunhuang Murals Based on Deep Learning Algorithm 收回：基于深度学习算法的敦煌壁画人物服饰文化整合方法研究

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-08-09 DOI: 10.1155/2023/9858495

International Journal of Antennas and Propagation

引用次数: 0

Application of the Finite Difference Parabolic Equation Model in Forestry Remote Telemetry 有限差分抛物方程模型在林业遥测中的应用

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-08-01 DOI: 10.1155/2023/6825971

Qi Guo, Yubin Lan, Xiaoling Deng, Y. Diao

{"title":"Application of the Finite Difference Parabolic Equation Model in Forestry Remote Telemetry","authors":"Qi Guo, Yubin Lan, Xiaoling Deng, Y. Diao","doi":"10.1155/2023/6825971","DOIUrl":"https://doi.org/10.1155/2023/6825971","url":null,"abstract":"In this article, the finite difference parabolic equation (FDPE) method is presented to calculate the propagation loss (PL) for electromagnetic waves (EWs) in the forest environment. The FDPE method is more efficient and convenient than the empirical models and has more advantages on compatibility and accuracy for long-range EWs prediction. The Debye–Cole dual dispersion model is used to simulate the effective permittivity of vegetation. The results of the FDPE model are compared with those of the advanced refractive effects prediction system and measurement results, and a good agreement is observed. Research found that PL for EWs varies with the effective permittivity. Also, the effective permittivity is a function of radio frequency, weight moisture content, and volume content of vegetation. Thus, it is necessary to establish a statistical model to determine some relations between the PL and plant biophysical parameters. The polynomial fitting method is adopted to process a large amount of PL data for obtaining a linear function. Then, the volume content and moisture content of vegetation can be determined according to the polynomial fitting function. It provides a novel and efficient method for forestry remote telemetry, which is specifically suitable for large-scale inaccessible region with serious environment.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47703566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Transmit Antenna Selection for Sum-Rate Maximization with Multiclass Scalable Gaussian Process Classification 基于多类可扩展高斯过程分类的和速率最大化发射天线选择

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-07-29 DOI: 10.1155/2023/3547030

Xiaofeng Yang

引用次数: 0

An Ultra-Wideband MIMO Bowl-Shaped Monopole Antenna with Sturdy and Simple Construction 一种结构简单、坚固的超宽带MIMO碗形单极天线

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-07-29 DOI: 10.1155/2023/5667834

Changxian Li, Pingchuan Wen, Xiujuan Lin, Di Wu, Changfei Zhou

引用次数: 0

On the Experimental Investigation of Bone Fracture Recovery Process Using an Ultra-Wideband Planar Monopole Antenna 超宽带平面单极天线骨折恢复过程的实验研究

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-07-26 DOI: 10.1155/2023/8825446

S. Rizwan, K. V. Phani Kumar, S. Palaniswamy

引用次数: 1

Investigation of Planar Isolators for Mutual Coupling Reduction in Two-Dimensional Microstrip Antenna Arrays 二维微带天线阵列中减少相互耦合的平面隔离器研究

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-07-25 DOI: 10.1155/2023/8865793

Ruowei Yin, Zhipeng Wu

{"title":"Investigation of Planar Isolators for Mutual Coupling Reduction in Two-Dimensional Microstrip Antenna Arrays","authors":"Ruowei Yin, Zhipeng Wu","doi":"10.1155/2023/8865793","DOIUrl":"https://doi.org/10.1155/2023/8865793","url":null,"abstract":"The design of isolators to reduce mutual coupling in large two-dimensional antenna arrays is complex and requires significant computational effort. This work attempts to alleviate this problem by applying different types of planar isolators in different orientations and experimenting first with two-element microstrip antenna arrays. A U-shaped planar transmission line isolator, a U-shaped planar transmission line-based destructive ground structure, and a planar neutralization line structure are designed to reduce E-plane or H-plane coupling in two-element microstrip antenna arrays. A mutual coupling reduction of approximately 6 dB is achieved. Four combinations of these planar isolators are compared and analyzed in a four-element microstrip antenna array. An optimal combination is then obtained by using two reversely placed U-shaped line isolators, which reduce the mutual coupling by more than 6.1 dB. The study is also extended to a 5 × 5 antenna array. Similar results of mutual coupling reduction are obtained. In addition to simulation, both two-element and 25-element microstrip antennas have been constructed and tested. The agreement of the simulation results with the measured results confirms the effectiveness of the decoupling structures.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42059570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Synthesis of Thinned Planar Concentric Circular Antenna Arrays Using a Modified Artificial Bee Colony Algorithm 基于改进人工蜂群算法的薄平面同心圆形天线阵列合成

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-07-22 DOI: 10.1155/2023/7735267

Yuqi Sun, Jia Sun, Lei Ye

{"title":"Synthesis of Thinned Planar Concentric Circular Antenna Arrays Using a Modified Artificial Bee Colony Algorithm","authors":"Yuqi Sun, Jia Sun, Lei Ye","doi":"10.1155/2023/7735267","DOIUrl":"https://doi.org/10.1155/2023/7735267","url":null,"abstract":"The artificial bee colony (ABC) algorithm is a biomimetic optimization algorithm based on the intelligent foraging behavior of a bee colony. It has obvious advantages in dealing with complex nonlinear optimization problems. However, the random neighborhood search leads to the ABC algorithm being good at exploration but neglected in exploitation. Therefore, a modified artificial bee colony algorithm (MABC) is proposed in this paper. The modified artificial bee colony algorithm is applied to the thinned optimization of large multiple concentric circular antenna arrays. The aim is to make the thinned array obtain the narrow beam pattern with the best peak sidelobe level (PSLL) in the vertical plane. The elements in the concentric circular antenna arrays are uniformly excited and isotropic. Two different cases have been considered in this study for thinning of concentric circular antenna arrays using MABC, one with fixed uniform interelement spacing and another with optimum uniform interelement spacing. In both the cases, the thinning percentage of the array is kept equal to or more than 50%. Simulation results of the proposed thinned arrays are compared with a fully populated array to illustrate the effectiveness of our proposed method.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47601808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

A Millimeter-Wave Antipodal Linearly Tapered Slot Antenna Array for 5G Wireless Communication 用于5G无线通信的毫米波反足线性锥形缝隙天线阵列

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2023-07-21 DOI: 10.1155/2023/6227251

C. Ni, W. W. Wang, Y. C. Zheng, J. Ding, K. Cao, B. Liu

{"title":"A Millimeter-Wave Antipodal Linearly Tapered Slot Antenna Array for 5G Wireless Communication","authors":"C. Ni, W. W. Wang, Y. C. Zheng, J. Ding, K. Cao, B. Liu","doi":"10.1155/2023/6227251","DOIUrl":"https://doi.org/10.1155/2023/6227251","url":null,"abstract":"This paper presents an antipodal linearly tapered slot antenna (ALTSA) array with the newly emerging substrate-integrated coaxial line (SICL) technology. Each element of the proposed array consists of two vertically stacked antipodal tapered slot antennas (TSA) with the inner conductor of a SICL as the shared fin. The vertical symmetry of this radiating element structure significantly suppresses the cross-polarization level. By employing a SICL-based power splitter with differential outputs, a two-element array with horizontal symmetry is formed. With the inner conductors of two parallel SICLs combined as the flaring metal shared by adjacent tapered slots, the main beam squint is effectively suppressed. Experimental results show an actual −10-dB impedance bandwidth (BW) of 24.5∼34.4 GHz, and the realized gain range measured is 16.1∼18.7 dBi. The cross-polarization levels are −39.4 dB/−40.7 dB at 30 GHz for the E-/H-planes. The measured results agree well with the simulated data which demonstrates the feasibility of the proposed SICL-based ALTSA scheme in the potential 5 G·millimeter-wave (mmWave) applications.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46502500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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