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International Journal of Antennas and Propagation最新文献

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Retracted: China’s Green Bond Market: Structural Characteristics, Formation Factors, and Development Suggestions—Based on the Comparison of the Chinese and the US Green Bond Markets Structure 收回：中国绿色债券市场：结构特征、形成因素及发展建议——基于中美绿色债券市场结构比较
IF 1.5 4区 计算机科学
International Journal of Antennas and Propagation Pub Date : 2023-08-09 DOI: 10.1155/2023/9825021
International Journal of Antennas and Propagation
{"title":"Retracted: China’s Green Bond Market: Structural Characteristics, Formation Factors, and Development Suggestions—Based on the Comparison of the Chinese and the US Green Bond Markets Structure","authors":"International Journal of Antennas and Propagation","doi":"10.1155/2023/9825021","DOIUrl":"https://doi.org/10.1155/2023/9825021","url":null,"abstract":"<jats:p />","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41357513","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
Retracted: Wavelet Transform-Based 3D Landscape Design and Optimization for Digital Cities 基于小波变换的数字城市三维景观设计与优化
IF 1.5 4区 计算机科学
International Journal of Antennas and Propagation Pub Date : 2023-08-09 DOI: 10.1155/2023/9781290
International Journal of Antennas and Propagation
{"title":"Retracted: Wavelet Transform-Based 3D Landscape Design and Optimization for Digital Cities","authors":"International Journal of Antennas and Propagation","doi":"10.1155/2023/9781290","DOIUrl":"https://doi.org/10.1155/2023/9781290","url":null,"abstract":"<jats:p />","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42258575","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
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
{"title":"Retracted: IoT-Based English Translation Teaching from the Perspective of Artificial Intelligence","authors":"International Journal of Antennas and Propagation","doi":"10.1155/2023/9805184","DOIUrl":"https://doi.org/10.1155/2023/9805184","url":null,"abstract":"<jats:p />","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47382125","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
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
{"title":"Retracted: Exploration of Intelligent Teaching Methods for Ideological and Political Education in Colleges and Universities under the Background of “Mass Entrepreneurship and Innovation”","authors":"International Journal of Antennas and Propagation","doi":"10.1155/2023/9842690","DOIUrl":"https://doi.org/10.1155/2023/9842690","url":null,"abstract":"<jats:p />","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43753048","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
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
{"title":"Retracted: Research on the Integration Method of Character Costume Culture in Dunhuang Murals Based on Deep Learning Algorithm","authors":"International Journal of Antennas and Propagation","doi":"10.1155/2023/9858495","DOIUrl":"https://doi.org/10.1155/2023/9858495","url":null,"abstract":"<jats:p />","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49349130","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
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":null,"pages":null},"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
{"title":"Transmit Antenna Selection for Sum-Rate Maximization with Multiclass Scalable Gaussian Process Classification","authors":"Xiaofeng Yang","doi":"10.1155/2023/3547030","DOIUrl":"https://doi.org/10.1155/2023/3547030","url":null,"abstract":"Antenna selection techniques are extensively applied to reduce hardware cost and power consumption in multiple-input multiple-output (MIMO) systems. This paper proposed a low-cost antenna selection method for system sum-rate maximization based on multiclass scalable Gaussian process classification (SGPC) which is capable to perform analytical inference and is scalable for massive data. Simulation results show that the average sum-rate obtained by SGPC is 1. 9 bps/Hz more than that obtained by conventional optimization driven user-centric antenna selection (UCAS) algorithm and 1 bps/Hz more than that obtained by the up-to-date learning scheme based on a deep neural network (DNN) when signal-to-noise ratio (SNR) is 10 dB, the number of total antennas at BS is 6, the number of selected antennas is 4, and the number of single-antenna users is 4. The superiority of SGPC over UCAS and DNN is more obvious as SNR, the number of selected antennas, or the number of users increases.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42612474","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
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
{"title":"An Ultra-Wideband MIMO Bowl-Shaped Monopole Antenna with Sturdy and Simple Construction","authors":"Changxian Li, Pingchuan Wen, Xiujuan Lin, Di Wu, Changfei Zhou","doi":"10.1155/2023/5667834","DOIUrl":"https://doi.org/10.1155/2023/5667834","url":null,"abstract":"Anultra-wideband (UWB) bowl-shaped monopole antenna with a sturdy, simple, and lightweight structure is proposed, and then is used to compose the 3 × 3 multiple input multiple output (MIMO) antenna. The wide bandwidth is determined by the outline of the monopole, which has a quarter wavelength and high-order modes. The inner part of the bowl-shaped monopole is removed for a light weight. The simulated and measured results show that an ultra-wide band of 2.3–8.1 GHz (5.8 GHz, 111.5%) and a high isolation of greater than 20 dB between the antenna elements of the MIMO antenna can be achieved.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44650081","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
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
{"title":"On the Experimental Investigation of Bone Fracture Recovery Process Using an Ultra-Wideband Planar Monopole Antenna","authors":"S. Rizwan, K. V. Phani Kumar, S. Palaniswamy","doi":"10.1155/2023/8825446","DOIUrl":"https://doi.org/10.1155/2023/8825446","url":null,"abstract":"In this paper, a noninvasive bone fracture monitoring system is developed using a planar monopole antenna. The proposed antenna provides an ultra-wideband response, and its overall size is 18 × 19 × 0.8 mm3. The proposed ultra-wideband monopole (UWM) antenna has a maximum measured gain of 3.77 dBi, and the maximum SAR value for an input power of 18 dBm is less than 1.6 (W/kg) (1 g). A bovine tibia is experimentally tested using a proposed UWM antenna to monitor the fracture recovery process and then further analysed using principle component and linear regression analysis. In addition, a microcontroller with a wireless communication module is developed to monitor the data in an Android application. The proposed system could be a promising approach for developing a portable, noninvasive monitoring device.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47469922","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
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":null,"pages":null},"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
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