发布求助
文献互助 智能选刊 最新文献

2021 International Symposium on Antennas and Propagation (ISAP)最新文献

筛选
英文 中文
Experimental Study on 3-Dimentional Imaging Using MW-2D-MIMO Radar MW-2D-MIMO雷达三维成像实验研究
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614405
T. Kato, H. Yamada, H. Mori
{"title":"Experimental Study on 3-Dimentional Imaging Using MW-2D-MIMO Radar","authors":"T. Kato, H. Yamada, H. Mori","doi":"10.23919/ISAP47258.2021.9614405","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614405","url":null,"abstract":"The main purpose of our research is to build a security system that checks the possession of dangerous materials using millimeter-wave radar with a small number of elements, and to realize 3D imaging without stopping the flow of people at low cost. In a previous study, SAR (Synthetic Aperture Radar) was used for high-definition 3D imaging [2]. However, this approach takes a long time in scanning to realize large virtual aperture. In this paper, we show that 3D imaging can be performed in a short time and with a small number of real elements by using MIMO arrays arranged in a two-dimensional plane. We also evaluate the spatial resolution of the 2D-MIMO array.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"47 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132603551","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
Multimodal Transfer Matrix Method Applied to 3-D Periodic Structures 多模态传递矩阵法在三维周期结构中的应用
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614393
F. Giusti, F. Mesa, Qiao Chen, G. Valério, O. Quevedo–Teruel
{"title":"Multimodal Transfer Matrix Method Applied to 3-D Periodic Structures","authors":"F. Giusti, F. Mesa, Qiao Chen, G. Valério, O. Quevedo–Teruel","doi":"10.23919/ISAP47258.2021.9614393","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614393","url":null,"abstract":"In this work, we discuss the application of the multimodal transfer matrix method (MMTMM) to compute the dispersion diagram of 3-D periodic structures. The problem of finding the complex wavenumber (both the phase and/or attenuation constants) of the different modes is posed as a standard linear eigenvalue problem in terms of the transfer matrix of the unit cell. The numerical drawbacks associated with the search of complex solutions in the complex plane are then avoided, thus making the MMTMM a useful tool to analyze and design periodic structures.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134432118","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: 2
Evaluation of Channel Capacity Characteristics for Asymmetric LoS-MIMO 非对称LoS-MIMO信道容量特性评估
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614374
Takanobu Watanabe, K. Nishimori
{"title":"Evaluation of Channel Capacity Characteristics for Asymmetric LoS-MIMO","authors":"Takanobu Watanabe, K. Nishimori","doi":"10.23919/ISAP47258.2021.9614374","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614374","url":null,"abstract":"In recent years, microwave and millimeter-wave bands have been considered for outdoor applications to cope with an increase in the communication traffic; however, the higher the frequency, the larger is the propagation loss. In this regard, a system that uses UAVs (drones) as relay stations to communicate in a line-of-sight (LoS) environment has been studied. In the system, there is a difference in the number of transmitting and receiving antenna elements between the base station and the drone and between the drone and the terminal. In this study, we evaluated the performance of asymmetric LoS-MIMO with a difference in the number of antenna elements between transmission and reception. The effectiveness of asymmetric LoS-MIMO was demonstrated by comparing the channel capacity pertaining to the distance between the transmitter and receiver based on the conventional symmetric LoS-MIMO with an equal number of antenna elements.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130354416","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: 1
Thermal Enhanced modelling of 6-energy-level system 6能级系统的热增强模型
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614602
Yaxin Yu, Yang Dong, Lingyu Xiao
{"title":"Thermal Enhanced modelling of 6-energy-level system","authors":"Yaxin Yu, Yang Dong, Lingyu Xiao","doi":"10.23919/ISAP47258.2021.9614602","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614602","url":null,"abstract":"We reported an enhanced numerical model with thermaliztion. The model is applied for the Finite-Difference Time-Domain (FDTD) simulation of electromagnetic interaction between light and gain medium with different ambient temperature, as well has sufficient computational efficiency. The algorithm is then used to study the lasing characteristics of a Distributed Bragg Reflector (DBR) laser with different temperature.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114388191","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
Feasibility study of an unbalanced MACKEY type R with enhanced robustness on metal 增强金属鲁棒性的不平衡MACKEY型R的可行性研究
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614521
Keisuke Miyashita, S. Makino, K. Itoh
{"title":"Feasibility study of an unbalanced MACKEY type R with enhanced robustness on metal","authors":"Keisuke Miyashita, S. Makino, K. Itoh","doi":"10.23919/ISAP47258.2021.9614521","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614521","url":null,"abstract":"A meta-surface-inspired antenna chip developed by KIT EOE Laboratory (MACKEY), which operates not only in free space but also on a metal plate, is proposed. In this study, an unbalanced MACKEY using an inverted L-shaped antenna as the feed element is proposed. In addition, to improve the characteristics of unbalanced MACKEY on metals, an unbalanced MACKEY type R is proposed with an optimized antenna width.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114645938","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: 7
Design of exponential gradient TEM horn antenna for ground penetrating radar 探地雷达指数梯度TEM喇叭天线设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614604
Ying Suo, Feixiang Qi, Wei Li
{"title":"Design of exponential gradient TEM horn antenna for ground penetrating radar","authors":"Ying Suo, Feixiang Qi, Wei Li","doi":"10.23919/ISAP47258.2021.9614604","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614604","url":null,"abstract":"Ground Penetrating Radar (GPR) technology is a kind of Ultra-wideband technology for underground targets. In this paper, an ultra-wideband transverse electromagnetic wave (TEM) horn antenna is designed. The size of this antenna is effectively reduced by adopting an exponentially graded horn structure, composite loading. Adding a metal reflector near the feeder further improves the antenna radiation directivity. The simulation results show that the designed antenna size is 0.50m×0.49m×0.33m (0.21×0.20×0.13λ). In the range of 0.125~3.1GHz, the voltage standing wave ratio is below 2, and the bandwidth ratio is 24.8:1. The gain is higher than 11.2dB above 1GHz.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117184417","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: 1
Design of Dual-Band Miniaturized Loop Antenna for Harmonic Radar Transponder 谐波雷达应答器双频小型化环形天线设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614635
Kuan-Ting Chen, Hsiu-Ping Liao, Shih-Yuan Chen
{"title":"Design of Dual-Band Miniaturized Loop Antenna for Harmonic Radar Transponder","authors":"Kuan-Ting Chen, Hsiu-Ping Liao, Shih-Yuan Chen","doi":"10.23919/ISAP47258.2021.9614635","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614635","url":null,"abstract":"A dual-band miniaturized loop antenna that can be applied to a bee-tracking harmonic radar transponder has been proposed. This antenna has the following characteristics. First, the overall size of the antenna is compact and measures 5 × 4 × 0.5 mm3. Second, the operating bands of the antenna cover the fundamental frequency range between 9.3-9.5 GHz and the first harmonic frequency at 18.8 GHz. Third, the radiation patterns in both operational bands are similar and omnidirectional. Besides, a novel integrated matching circuit has been proposed to realize the impedance matching of this dual-band miniaturized loop antenna. The structure of this matching circuit is symmetrical without affecting the patterns and does not require additional SMD components. Finally, a prototype antenna with this novel matching circuit is designed and implemented.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117289011","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
Large Scale Characteristics of Millimeter-Wave Propagation Channels in Various Indoor Office Environments 不同室内办公环境下毫米波传播通道的大尺度特性
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614537
Keiichiro Kumakura, Shuaiqin Tang, Hibiki Tsukada, Minseok Kim
{"title":"Large Scale Characteristics of Millimeter-Wave Propagation Channels in Various Indoor Office Environments","authors":"Keiichiro Kumakura, Shuaiqin Tang, Hibiki Tsukada, Minseok Kim","doi":"10.23919/ISAP47258.2021.9614537","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614537","url":null,"abstract":"This paper reports the results of extensive radio propagation measurements in an office environment including four typical usage scenarios in the 58.32 GHz band. From the measured multi-dimensional power spectra, the large scale channel behaviors for delay time (DT) and azimuth angles of departure (AoD) and arrival (AoA) were characterized by the widely accepted large scale parameters (LSP) of path gain (PG), delay spread (DS), aimuthal spread of departure (ASD), and aimuthal spread of arrival (ASA). Those parameters were compared with those of existing 3GPP model.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115909768","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: 2
A D-band H-plane Hard-Soft Horn Antenna 一种d波段h面硬软喇叭天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614447
Dongquan Sun, Yong Yang, Xiang Chen
{"title":"A D-band H-plane Hard-Soft Horn Antenna","authors":"Dongquan Sun, Yong Yang, Xiang Chen","doi":"10.23919/ISAP47258.2021.9614447","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614447","url":null,"abstract":"Hard-Soft Electromagnetic bandgap material is a two-dimensional EBG material composed of a hard surface and a soft surface with an air gap between the two surfaces. A hard-soft EBG material for D-band applications is described. A D-band H-plane horn antenna using this EBG material is designed.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115474657","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
LTCC End-Fire Array Antenna with Dual-Band and Dual-Polarization for Mobile
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614408
D. Yamashita
{"title":"LTCC End-Fire Array Antenna with Dual-Band and Dual-Polarization for Mobile","authors":"D. Yamashita","doi":"10.23919/ISAP47258.2021.9614408","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614408","url":null,"abstract":"Antenna substrate for Mobile needs to support dual-band and have dual polarization property and requires low height for 5G millimeter wave. In this study, we designed a thin antenna substrate with broad band and dual polarization property in the 28 and 39GHz band. The antenna utilized LTCC material (Dielectric constant 5.8, Dielectric loss 0.002@28GHz) was developed for high frequencies such as millimeter wave. Each polarization antenna was designed by log-periodic antenna, which is an End-Fire type antenna that radiates from the side wall of a substrate. These antenna elements were miniaturized by higher dielectric constant of LTCC material. From the results of simulation, it was confirmed that each polarization antenna for 5G application made by LTCC had broadband property. After that, the array antennas were designed based on these antennas (each 4 antennas). From this investigation, size of array antenna could be small (21.9 x 6.8 x t2.2mm). From the result of simulation, it was confirmed that array antenna could be operated dual-band and dual polarization. Next step is to product frontend module, which included the developed antenna and RF components (e.g. PA, LNA, Shifter, Mixer …), and will evaluate 5G application capability of this frontend module.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123291400","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信