International Journal of Antennas and Propagation最新文献

Measurement of High-Power Microwave Impulse Response Characteristics of Reflector Materials 测量反射器材料的高功率微波脉冲响应特性

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-05-31 DOI: 10.1155/2024/3664678

Xianggang Hu, Jiancang Su, Mingtao Zhang, Jingang Gong, Kewei Cheng, Jia Liu, Jiande Zhang, Xiaoxin Zhu, Rui Li, Jie Cheng, Shaotong Wu

{"title":"Measurement of High-Power Microwave Impulse Response Characteristics of Reflector Materials","authors":"Xianggang Hu, Jiancang Su, Mingtao Zhang, Jingang Gong, Kewei Cheng, Jia Liu, Jiande Zhang, Xiaoxin Zhu, Rui Li, Jie Cheng, Shaotong Wu","doi":"10.1155/2024/3664678","DOIUrl":"https://doi.org/10.1155/2024/3664678","url":null,"abstract":"High-power microwave (HPM) antenna, one of the key subsystems in the HPM system, is used for HPM radiation. Its performance is partly determined by the impulse responses of reflector materials under HPM. Therefore, it is essential to investigate the impulse response characteristics of reflector materials under HPM. Instead of the traditional waveguide cavity, this study was based on the double elliptical reflector system with an open boundary. By using this system, the impulse response of reflector materials was measured, and the response of reflector materials of multiple types under various environments with different electric field strengths and pulse widths was tested. In terms of breakdown, reflection efficiency, and pulse waveform, aluminum and carbon fiber test plates were affected by HPM and compared. Finally, the impulse response characteristics of carbon fiber test plates were summarized. The proposed method applied in this research is universal, matches the practical application environment, and can be extensively employed in the impulse response research and test of reflector materials.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188137","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

Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets 实际地形和移动火箭的复合电磁散射特性

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-05-21 DOI: 10.1155/2024/2878468

Guanhongye Peng, Xincheng Ren, Lixin Guo, Xiaomin Zhu, Pengju Yang, Ye Zhao, Bohang Zhang, Guoshan Wu

{"title":"Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets","authors":"Guanhongye Peng, Xincheng Ren, Lixin Guo, Xiaomin Zhu, Pengju Yang, Ye Zhao, Bohang Zhang, Guoshan Wu","doi":"10.1155/2024/2878468","DOIUrl":"https://doi.org/10.1155/2024/2878468","url":null,"abstract":"This research involved studying the characteristics of composite electromagnetic scattering from a rocket moving above actual terrain using the finite-difference time-domain method. The angular distribution curve of the composite scattering coefficient was obtained, and the influences of factors such as the angle of incidence, the frequency of the incident electromagnetic wave, the content of moisture in soil, the dielectric constant of the rocket-shell material, the height of the rocket, and the undulation of the terrain on the composite scattering coefficient were investigated. Results show that the composite scattering coefficient oscillates with the scattering angle and increases in the direction of mirror reflection. It also decreases with increasing angle of incidence, frequency of the incident wave, and altitude of the rocket, while it increases with increasing soil moisture and dielectric constant of the rocket-shell materials. Although the influence of different terrain undulations on the composite scattering coefficient is noticeable, it follows no fixed pattern.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141118567","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

A Simultaneous Study on Wire-Loop, Plate-Loop, and Plate Antennas for Wideband Circular Polarization 针对宽带圆极化的线环、板环和平板天线的同步研究

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-05-11 DOI: 10.1155/2024/9326275

Kazuhide Hirose, Mitsuki Hirose, Hisamatsu Nakano

引用次数: 0

Extracting Pole Characteristics of Complex Radar Targets for the Aircraft in Resonance Region Using RMSPSO_ARMA 使用 RMSPSO_ARMA 提取共振区飞机复杂雷达目标的极点特征

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-05-06 DOI: 10.1155/2024/2233923

Sang Zhou, Huotao Gao, Fangyu Ren

引用次数: 0

Safety Assessment of Electromagnetic Environmental Exposure for GPS Antenna of Electric Vehicle 电动汽车 GPS 天线电磁环境暴露安全评估

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-04-29 DOI: 10.1155/2024/3192747

Siyu Shang, Mai Lu

{"title":"Safety Assessment of Electromagnetic Environmental Exposure for GPS Antenna of Electric Vehicle","authors":"Siyu Shang, Mai Lu","doi":"10.1155/2024/3192747","DOIUrl":"https://doi.org/10.1155/2024/3192747","url":null,"abstract":"The present GPS (global positioning system) is widely used in electric vehicle navigation; it is usually installed in the middle-to-rear position on the car’s roof, near the rear windshield. Since the GPS antenna operating frequency is 1.575 GHz, the health risk of the passengers in the car in this high-frequency electromagnetic exposure is a matter of concern. In this paper, we construct models for a GPS antenna, an electric vehicle, and a human body. Through the multiphysics field coupling calculation in COMSOL Multiphysics, a finite element simulation software, in both frequency domain and transient analysis, we obtain the electric field strength distribution, specific absorption rate, and temperature distribution of the human body at three positions inside the electric vehicle after being exposed to the GPS antenna radiation for 30 minutes. The peak human-induced electric field is 18.4 V/m, and the peak specific absorption rate is 0.193 W/kg. The 30 minute average maximum human-induced electric field is 1.6906 V/m, which is 3.1% of the ICNIRP limit, the 30 minute average whole-body SAR is 0.0036 W/kg, which is 4.5% of the ICNIRP limit, and the 30 minute average human core temperature rise is 0.06°C, which is 6% of the ICNIRP limit. In addition, we simulate the impact of three different vehicle shell materials on the level of electromagnetic exposure to the human body, which can provide reference for electromagnetic shielding design in automobiles. The results indicate that the induced electric field strength, specific absorption rate (SAR), and temperature rise in various parts of the human body did not exceed the standard limits in the latest version of ICNIRP. This suggests that the electromagnetic exposure from the GPS antenna in a typical automotive environment does not pose a threat to human health.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812124","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

A Low-Cost Wideband Digital Array Antenna Based on Stretch Processing Technique 基于拉伸处理技术的低成本宽带数字阵列天线

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-04-24 DOI: 10.1155/2024/3624117

Daqun Yu, Zhangcheng Hao, Lei Yang, Yang Wang, Lei Sun, Jianjun Mao

{"title":"A Low-Cost Wideband Digital Array Antenna Based on Stretch Processing Technique","authors":"Daqun Yu, Zhangcheng Hao, Lei Yang, Yang Wang, Lei Sun, Jianjun Mao","doi":"10.1155/2024/3624117","DOIUrl":"https://doi.org/10.1155/2024/3624117","url":null,"abstract":"Wideband digital phased array radar offers the advantages of high range resolution, which improves the recognition ability for multiple targets, group targets, and high-speed targets. Traditional wideband phased arrays use true time delay to compensate for aperture fill time; however, the cost increases significantly. In this paper, a wideband elemental digital array architecture based on the stretch processing method is proposed. By utilizing the time-domain and frequency-domain translation equivalence of the LFM (Linear Frequency Modulation) signal waveform, the equivalent aperture fill time is compensated for through frequency shift and phase shift after stretch processing. Compared to traditional wideband digital arrays, this method can dramatically reduce the required sampling rate and lower the requirements on antenna hardware, thereby reducing the manufacturing cost of system. A comprehensive analysis of the signal processing process and stretch processing method is provided. And an antenna array prototype is developed to verify the T/R channel compensation and wideband beamforming. Measured results show that the antenna is capable of ±60° scanning in azimuth plane and ±40° scanning in elevation plane, with a bandwidth of 500 MHz in S-band. The results demonstrate excellent wideband beam performance and accurate lobe scanning, which confirms the validity of the proposed wideband architecture for stretch processing, frequency shift, and phase shift. This method can be widely applied to the low-cost design and wideband performance improvement of wideband digital array radar.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140659711","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 Design and Verification of an Efficient Microwave Wireless Power Transmission System 论高效微波无线电力传输系统的设计与验证

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-04-23 DOI: 10.1155/2024/1861253

Baoxian Zheng, Kunding Ma, Yuanyuan Liu, Tong Jiang, Tingyi Liu, Qishuai Ma, Yi Liu, Lin Yang, Xi Li

引用次数: 0

Design of the Monopulse Feeding Network for a Slotted Waveguide Array on an Annular Disk 环形盘上开槽波导阵列的单脉冲馈电网络设计

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-04-16 DOI: 10.1155/2024/5761698

Zongxin Wang, Yulan Wang, Shengchi Zhu, Peng Chen

{"title":"Design of the Monopulse Feeding Network for a Slotted Waveguide Array on an Annular Disk","authors":"Zongxin Wang, Yulan Wang, Shengchi Zhu, Peng Chen","doi":"10.1155/2024/5761698","DOIUrl":"https://doi.org/10.1155/2024/5761698","url":null,"abstract":"Design of a monopulse feeding network including a compact power distribution network and a monopulse comparator for a dual polarization slotted waveguide array fabricated on an annular disk is presented in this paper. As the slotted waveguide array is arranged on an annular disk, the feeding network is more complicated than that of a regular array such as a rectangular array. The design details of some key waveguide components, such as the compact assembly of H-plane T-junctions and E-plane elbows used to connect power distribution networks and radiation waveguides, are provided. Quasiplanar magic tees are designed and used to construct the compact sum and difference comparator. The antenna system contains two comparators, which are used to generate sum and difference beams for horizontal polarization and vertical polarization, respectively. Finally, the monopulse slotted waveguide array antenna is divided into two modules, a comparator module and an antenna module (including power distribution network), and fabricated with the layered processing and bonding process. The comparator module is measured using a network analyzer to verify its amplitude-frequency characteristics and phase-frequency characteristics. Screwing the comparator module and the antenna module together, a monopulse slotted waveguide array antenna is obtained, and the sum beam and difference beam characteristics of the antenna are measured in a microwave chamber and presented.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140601183","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

A Compact Isolated CR Antenna System for Application in C-Band 应用于 C 波段的紧凑型隔离 CR 天线系统

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-04-15 DOI: 10.1155/2024/5522356

Rajeev K. Parida, Abdulkarem H. M. Almawgani, Arjuna Muduli, Dhruba C. Panda, Adam R. H. Alhawari, Amrindra Pal, M. M. Abdullah, Hasan B. Albargi

引用次数: 0

Design of Microstrip Antenna Arrays with Rotated Elements Using Wilkinson Power Dividers for 5 G Customer Premise Equipment Applications 利用威尔金森功率分配器为 5 G 客户端设备应用设计带旋转元件的微带天线阵列

IF 1.5 4区计算机科学

International Journal of Antennas and Propagation Pub Date : 2024-04-12 DOI: 10.1155/2024/2945195

Ting-Yi Huang, Yun-Jhang Lee

{"title":"Design of Microstrip Antenna Arrays with Rotated Elements Using Wilkinson Power Dividers for 5 G Customer Premise Equipment Applications","authors":"Ting-Yi Huang, Yun-Jhang Lee","doi":"10.1155/2024/2945195","DOIUrl":"https://doi.org/10.1155/2024/2945195","url":null,"abstract":"Microstrip antenna arrays are proposed in this paper for the customer premise equipment (CPE) applications in the frequency range 1 (FR1) of the 5<sup>th</sup> generation (5 G) mobile networks. The proposed antenna arrays consist of three FR4 substrates. Antenna elements and feeding networks are optimized separately through parameter studies and then combined to form the proposed antenna arrays. Bandwidth-enhancing parasitic elements on the top substrate are broadside coupled to the microstrip antennas in the middle substrate, which are probe-fed by the microstrip feeding network using Wilkinson power dividers realized in the bottom substrate through the ground plane and the stud supporting air layer between the lower two substrates. Two antenna arrays, with four and eight antenna elements, are proposed for different gain specifications, 10 dBi and 12 dBi, respectively. Bandwidths of 10-dB return loss for both arrays fully covered the 5 G n78 frequency band (3.3–3.8 GHz). 20 dB isolation between antenna elements can also be achieved using the proposed layouts with rotated elements. The dimensions, radiation gain, and efficiency of the proposed antenna units, four-element array, and eight-element array are 65 × 65 × 11.4, 115 × 115 × 11.4, and 115 × 215 × 11.4 mm<sup>3</sup>, 6.2, 10.5, and 13 dBi, 74%, 56%, and 50%, respectively. The proposed antenna arrays exhibit the advantages of simple, low-cost, low-profile, and high-gain characteristics, which is potentially applicable to 5 G CPE outdoor unit (ODU)-related devices.","PeriodicalId":54392,"journal":{"name":"International Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140601077","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