发布求助
文献互助 智能选刊 最新文献

2022 Photonics & Electromagnetics Research Symposium (PIERS)最新文献

筛选
英文 中文
Study of Terahertz-band Sheet Electron Beam Extended Interaction Oscillators 太赫兹波段片状电子束扩展相互作用振荡器的研究
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793072
G. Shu, J. Liao, Jingcong He, J. Ren, Junzhe Deng, Wenlong He
{"title":"Study of Terahertz-band Sheet Electron Beam Extended Interaction Oscillators","authors":"G. Shu, J. Liao, Jingcong He, J. Ren, Junzhe Deng, Wenlong He","doi":"10.1109/piers55526.2022.9793072","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793072","url":null,"abstract":"Our recent research regarding sheet beam extened interacion oscillators (SB-EIOs) are presented in this paper. In recent years, we have conducted the research of terahertz-band SB-EIOs around two issues: (1) to increase the output power, and (2) to extend the tunable frequency bandwidth. For the first issue, the idea of combining the advantages of a ladder-like interaction circuit (high gain per unit length) and a pseudospark-sourced sheet electron beam (high beam current density and large beam cross-sectional area) is proposed. Such an idea was experimentally verified by using hot-test results. For the second issue, the concept of multiple-mode operation has been proposed to replace the traditional single-mode operation. Such a methodology so far has been initially confirmed by using cold-test results.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122836723","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
Time Series Remote Sensing of Land Use Changes and Influences on Runoff and Sediment Yield in Dongjiang River Basin, China 东江流域土地利用变化及其产流产沙影响的时序遥感研究
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792765
H. Ma, J. Qiu, Y. Wang
{"title":"Time Series Remote Sensing of Land Use Changes and Influences on Runoff and Sediment Yield in Dongjiang River Basin, China","authors":"H. Ma, J. Qiu, Y. Wang","doi":"10.1109/piers55526.2022.9792765","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792765","url":null,"abstract":"Land use and land cover (LULC) is an important factor affecting runoff and sediment yield of watershed. Dongjiang River is the main source of drink water for Hong Kong and cities in the Pearl River Delta Area, which experienced a rapid urbanization and blooming economy growth. Studying the land use changes using time series remote sensing and their influences on runoff and sediment yield in watershed-scale can provide valuable information for the formulation of land use plans in Dongjiang Watershed. This study constructed a SWAT (Soil and Water Assessment Tool) model of the Dongjiang River basin and analyzed the LULC changes from 2001 to 2012 using MODIS land use data products (MCD12Q1). The influence of LULC changes on the runoff and sediment yield in the Dongjiang basin was analyzed by simulating the runoff and sediment yield under different LULC scenarios. Our results show that the main types of land use in the Dongjiang River basin were evergreen woodland, grassland and agricultural land from 2001 to 2012, accounting for more than 80% of the total area of the basin. During the period of study, the evergreen forest land increased by 14.46%, while grassland, agricultural land and mixed forest decreased by 4.78%, 4.54% and 3.97%, respectively. These changes led to an increase of 0.22 mm in the average monthly runoff in the basin, which reached by 2.39 mm in flood season (April-September). At the same time range, the average monthly sediment yield decreased by 0.79 t/ha with a more significant decreasing by 6.29 t/ha in flood season (From April to September). Our results indicate that long term conversions of grassland, agricultural land and mixed forest to evergreen woodland in watershed will lead to the increasing runoff and decrease of sediments of river, which is important for catchment-scale resource planning and environmental management.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131477188","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
Higher Order Impedance Boundary Condition with Integral Method for the Scattering Problem in Electromagnetism 电磁学散射问题的高阶阻抗边界条件积分法
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792959
C. Daveau, Molka Kacem, Soumaya Oueslati, S. Bornhofen, Brice Naisseline
{"title":"Higher Order Impedance Boundary Condition with Integral Method for the Scattering Problem in Electromagnetism","authors":"C. Daveau, Molka Kacem, Soumaya Oueslati, S. Bornhofen, Brice Naisseline","doi":"10.1109/piers55526.2022.9792959","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792959","url":null,"abstract":"In this paper, we implement the high order boundary condition (HOIBC) in the integral equations to solve the scattering problem. We study the HOIBC operators that appear in the boundary integral equations and we propose a discretization of these operators in spaces H(div) and H(curl). Then, we give validations of the HOIBC by calculating the radar cross section (RCS), that show the improvement in accuracy over the standard impedance boundary condition (SIBC). The computation code implements the H-matrix approach with Adaptive Cross Approximation (ACA) and MPI parallelization.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132707882","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
Demystifying Self-healing Property of Accelerating Beams for Obstacles Circumvention in Communication Applications 加速光束在通信中避障自愈特性的揭示
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792886
D. Inserra, G. Wen
{"title":"Demystifying Self-healing Property of Accelerating Beams for Obstacles Circumvention in Communication Applications","authors":"D. Inserra, G. Wen","doi":"10.1109/piers55526.2022.9792886","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792886","url":null,"abstract":"This paper deals with the application of self-accelerating beams for obstacle circumvention in communication applications. Particularly, although recent research works have proposed to take advantage of the self-healing property of self-accelerating beams like the Airy beam to circumvent obstacles and enable data transmission in non-line-of-sight (non-LOS) scenarios, the analysis presented in this paper shows that this is not a viable approach, at least when the transmission aperture dimension is comparable or smaller than that of the obstacle. Ray-optics interpretation, equivalent point source propagation models which take into account the presence of obstacles of different sizes, and full-electromagnetic wave simulation results will be provided to confirm this fact.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134322291","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 Zero Bias Detector Chip Using Schottky Diode 利用肖特基二极管的A - D波段零偏检测器芯片
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792773
D. Ji, B. NIu, H. Tao, T. S. Chen, W. B. Wang
{"title":"A D Band Zero Bias Detector Chip Using Schottky Diode","authors":"D. Ji, B. NIu, H. Tao, T. S. Chen, W. B. Wang","doi":"10.1109/piers55526.2022.9792773","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792773","url":null,"abstract":"In this paper, a D band zero bias detector chip using InGaAs Schottky barrier diode (SBD) is proposed. The Schottky barrier diode with 3.5 THz cut-off frequency and 0.16 eV barrier height is realized based on the low barrier Schottky junction formed by contact between InGaAs and Ti. The detector chip is fabricated on a 50 micron InP substrate using the MMIC technology, and the microstrip structure is realized by processing the metal layer on the back of the InP substrate. The RF grounding of the Schottky barrier diode is completed by connecting the metal through hole with the back metal layer. The experimental results show that the voltage sensitivity of the D band detector chip is more than 2100 V/W in the range of D band, and more than 12000 V/W at 122 GHz, when the input RF power is −30 dBm.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134354545","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 Band-notched UWB Antenna Based on Characteristic Mode Theory 基于特征模理论的带缺口超宽带天线设计
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793260
Baitong Chu, G. Cheng
{"title":"Design of Band-notched UWB Antenna Based on Characteristic Mode Theory","authors":"Baitong Chu, G. Cheng","doi":"10.1109/piers55526.2022.9793260","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793260","url":null,"abstract":"In this paper, the characteristic mode theory (CMT) is applied to the analysis of the ultrawideband (UWB) antennas. The effect of each mode on the radiation of the antenna can be known by analyzing the modal weighting coefficients (MWC). Depending on the location and magnitude of the mode current, additional slots are introduced to block the current. An UWB antenna with three kinds of band-notched antenna is designed.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"12 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124669164","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 Broadband High-efficiency Multifunctional Ultrathin Metasurfaces 一种宽带高效多功能超薄超表面
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793184
Yufang Wang, Y. Ge, Z. Chen
{"title":"A Broadband High-efficiency Multifunctional Ultrathin Metasurfaces","authors":"Yufang Wang, Y. Ge, Z. Chen","doi":"10.1109/piers55526.2022.9793184","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793184","url":null,"abstract":"This paper proposes a kind of broadband metasurfaces that can independently and finely control the amplitudes and phases with a high efficiency for both reflection and transmission modes. A Fabry-Perot (FP) cavity and a metallic dual-split ring (DSR) polarizer are combined to construct each element of the metasuface that has an ultrathin and planar structure. The forward cross-polarization transmission and backward co-polarization reflection can be switched easily by varying the DSR polarizer. It can offer the arbitrary combination of amplitudes within [0, 1] and phases within the range of [0, 360°] for both transmission and reflection modes. The proposed metasurface was applied to design high-gain low-sidelobe transmitarray antenna (TA) and reflectarray antenna (RA). Comparisons between metasurfaces based on the phase control only and those based on the control of both phase and amplitude are studied. Numerical simulation results verify the described superior performance.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132474614","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
Recent Progresses in Dispersion Engineering for Broadband Nonlinear Applications 宽带非线性色散工程研究进展
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792960
Yushuo Guo, Lijuan Xu, Yuhao Guo, Yuke Zhai, Lin Zhang
{"title":"Recent Progresses in Dispersion Engineering for Broadband Nonlinear Applications","authors":"Yushuo Guo, Lijuan Xu, Yuhao Guo, Yuke Zhai, Lin Zhang","doi":"10.1109/piers55526.2022.9792960","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792960","url":null,"abstract":"Group-velocity dispersion (GVD) engineering is vital to many nonlinear optical phenomena and has been widely used for nonlinear optics. In this work, we propose SiC- and Si3 N4-based waveguides, which are truly dispersion-flattened and simultaneously single-mode. An ultra-low and flat dispersion profile with four zero-dispersion wavelengths (ZDWs) can be obtained over an octave-spanning bandwidth from 1.8 to 3.6 μm. Meanwhile, only TE00 mode is supported in the proposed waveguide over the low-dispersion bandwidth.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131853223","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 Wideband C-shaped Open Slot Array for Millimeter-wave Applications 一种用于毫米波应用的宽带c形开槽阵列
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792949
Guang-Hua Sun, H. Wong
{"title":"A Wideband C-shaped Open Slot Array for Millimeter-wave Applications","authors":"Guang-Hua Sun, H. Wong","doi":"10.1109/piers55526.2022.9792949","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792949","url":null,"abstract":"In this paper, we propose a wideband and high-gain planar antenna array for millimeter-wave applications. In this array, the slot radiator with a C-shaped and open structure is used as the antenna element. Due to the travelling-wave radiation of the open slot, the slot radiator can produce a wideband radiation and have an impedance bandwidth of 40% with the |S11| below –10dB from 21.6 GHz to 32.6 GHz. The gain of the proposed antenna element is up to 12.5 dBi owning to its large radiation aperture formed by two C-shaped open slot. Based on this wideband and high-gain antenna element, we design an 8 × 8 antenna array with a 1-to-64 SIW full-corporate feed network. The proposed array is fabricated in a two-layer substrate using standard printed circuit board (PCB) technology. The measured results show that the proposed antenna array has an impedance bandwidth of 37% from 21.4 to 31GHz. The measured gain of the proposed array is from 26.3 to 28.4 dBi over the operating bandwidth, with an average radiation efficiency of 70%. With wide bandwidth and the high directive gain, the proposed antenna array is a good candidate for long-distance millimeter-wave communications.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132566818","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
Online Traffic Classification Scheme Based on Bidirectional Long-short Term Memory and Attention in Edge Computing Oriented Optical Networks 面向边缘计算的光网络中基于双向长短期记忆和注意力的在线流量分类方案
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793135
Zhengjie Sun, Hui Yang, Chao Li, Q. Yao, B. Bao, J. Zhang, Yunbo Li, Dechao Zhang, Dong Wang
{"title":"Online Traffic Classification Scheme Based on Bidirectional Long-short Term Memory and Attention in Edge Computing Oriented Optical Networks","authors":"Zhengjie Sun, Hui Yang, Chao Li, Q. Yao, B. Bao, J. Zhang, Yunbo Li, Dechao Zhang, Dong Wang","doi":"10.1109/piers55526.2022.9793135","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793135","url":null,"abstract":"This paper proposes an online traffic classification scheme based on Bi-LSTM and attention approach in edge computing oriented optical networks. Results confirm that the proposed scheme achieves high-accuracy and rapid traffic classification under the condition of large traffic load.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132703266","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