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2012 IEEE Asia-Pacific Conference on Antennas and Propagation最新文献

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A backplane-less microwave meta-material absorber 无背板微波超材料吸收器
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333264
Hong-min Lee, Hyung-sup Lee
{"title":"A backplane-less microwave meta-material absorber","authors":"Hong-min Lee, Hyung-sup Lee","doi":"10.1109/APCAP.2012.6333264","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333264","url":null,"abstract":"In this paper, we present a new type of a double-negative meta-material (MTM) absorber with a periodic array composed of a split-ring resonator (SRR) and open complementary split-ring resonators (OCSRRs) for magnetic and electric response, respectively. In order to avoid the need for this metallic back plate, a planar array of SRRs for resonant-magnetic inclusion is placed facing toward the incident wave propagation direction. In contrast to common absorber configurations, the absorber proposed in this paper does not use a metallic back plate or a resistive sheet. Both simulation results and experiments on the fabricated absorber verify the effectiveness of the proposed backplane-less MTM absorber.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115051862","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: 4
Study on the fractional power spectrum of the scattered echoes from 1-D time-varying sea surface 一维时变海面散射回波分数功率谱研究
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333275
Xiaolong Chen, Guoqing Wang, Yong Huang, J. Guan
{"title":"Study on the fractional power spectrum of the scattered echoes from 1-D time-varying sea surface","authors":"Xiaolong Chen, Guoqing Wang, Yong Huang, J. Guan","doi":"10.1109/APCAP.2012.6333275","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333275","url":null,"abstract":"The classical two-scale model based on linear hydrodynamics may account for the “slow signals” which include Bragg scattering from both free and bound capillary waves but it is insufficient to describe the non-Bragg scattering from “fast scatterers” associated with breaking wave crests. Here, a realistic model of the time-varying sea surface with a quadratic phase is proposed and the characteristic of fractional power spectrum (FPS) of scattered echoes is investigated. The FPS of the proposed scattered field is found to be distributed as sum of sinc functions, whose locations in the fractional Fourier domain are relative to the chirp rate and central frequency of the 1-D sea surface model. Numerical results using X-band real sea clutter data prove that the proposed model provides a good description of the time-varying sea surface especially for the analysis of non-Bragg scattering.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116318012","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
Identification of maturity of fruit in the frequency domain using its natural frequencies 利用果实的固有频率在频域上识别果实的成熟度
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333263
T. Tantisopharak, M. Krairiksh, H. Moon, Woojin Lee, T. Sarkar
{"title":"Identification of maturity of fruit in the frequency domain using its natural frequencies","authors":"T. Tantisopharak, M. Krairiksh, H. Moon, Woojin Lee, T. Sarkar","doi":"10.1109/APCAP.2012.6333263","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333263","url":null,"abstract":"This paper presents an identification methodology to determine the stage of maturity of a fruit by using its natural resonant frequencies, which can be extracted from its scattering response. Since the dielectric properties of a fruit are determined by its chemical properties, the identification can be performed by comparing the libraries of poles to determine the stage of maturity for that fruit.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122154577","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: 9
Metal-insulator-Si hybrid plasmonic waveguide components for on-chip photonics 片上光子学用金属-绝缘体-硅混合等离子体波导元件
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333181
Shiyang Zhu, G. Lo, D. Kwong
{"title":"Metal-insulator-Si hybrid plasmonic waveguide components for on-chip photonics","authors":"Shiyang Zhu, G. Lo, D. Kwong","doi":"10.1109/APCAP.2012.6333181","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333181","url":null,"abstract":"Vertical Cu-SiO2-Si hybrid plasmonic components are experimentally demonstrated on a SOI platform using standard CMOS technology. The hybrid plasmonic waveguide (HPW) exhibits relatively low propagation loss of ~0.12 dB/μm and high coupling efficiency of ~86% with the conventional Si waveguides. The plasmonic waveguide-ring resonator with a compact radius of 1.59 μm exhibits high performance such as large extinction ratio of ~18 dB, small bandwidth of ~4 nm, and large free spectral range of ~74 nm. These superior performances as well as the fully CMOS compatibility make them promising building blocks for silicon electronic-photonic integrated circuits for data communications and sensing applications.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129528050","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
Mur absorbing boundary condition for 2-D leapfrog ADI-FDTD method 二维跨越式ADI-FDTD法的吸波边界条件
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333119
Theng Huat Gan, E. L. Tan
{"title":"Mur absorbing boundary condition for 2-D leapfrog ADI-FDTD method","authors":"Theng Huat Gan, E. L. Tan","doi":"10.1109/APCAP.2012.6333119","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333119","url":null,"abstract":"This paper presents the implementation of the Mur absorbing boundary condition (ABC) for the two-dimensional (2-D) transverse electric (TE) leapfrog alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method. The electric and magnetic field components for the leapfrog ADI-FDTD method are updated implicitly and thus, additional considerations need to be ensured for implementation of the boundary conditions. The first-order Mur updating equation is implemented for both the electric and magnetic field updates. Numerical results for the reflection errors and late time stability are presented.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128454504","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: 10
High gain planar antenna arrays applied in mobile satellite communication 高增益平面天线阵列在移动卫星通信中的应用
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333185
R. Jin, Jun-ping Geng, Xiangling Liang, Sheng Ye, Wenzhi Wang, T. Bird, Y. Guo
{"title":"High gain planar antenna arrays applied in mobile satellite communication","authors":"R. Jin, Jun-ping Geng, Xiangling Liang, Sheng Ye, Wenzhi Wang, T. Bird, Y. Guo","doi":"10.1109/APCAP.2012.6333185","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333185","url":null,"abstract":"Two large and low profile panel antenna arrays used as receiving and transmitting antennas for mobile satellite communications are described. The two arrays have an overall size of 120×20.7×1.3cm3 and 107.5×20.4×1.7cm3, respectively, and exhibit high gains and adequate efficiencies due to effective array designs. For the receiving panel array, a method using a number of high efficiency sub-arrays combined with a novel active integrated global feed network is proposed. For the transmitting panel array, a number of high efficiency sub-arrays together with a novel compact waveguide feed network is employed. Based on the above techniques, two large panel antenna arrays are successfully developed. We present detailed designs of the sub-arrays, the passive and active feed networks, and the vertical transitions. Simulated and experimental results show that the designed receiving and transmitting panel arrays achieve the measured gains and efficiencies of 34.1dBi, 48.2% and 33.5dBi, 36.3%, respectively, which indicates that the proposed antenna panels are good candidates for future satellite communications applications.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129610478","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
Analysis of an infrared imaging system based on diffractive mirror and lenses 基于衍射镜和透镜的红外成像系统分析
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333191
Chaoran Hu, W. Dou
{"title":"Analysis of an infrared imaging system based on diffractive mirror and lenses","authors":"Chaoran Hu, W. Dou","doi":"10.1109/APCAP.2012.6333191","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333191","url":null,"abstract":"In this paper, a new structure of infrared imaging system consisted of a diffractive primary mirror, sub-mirror and emendation lenses are proposed. The focal plane field distribution of the imaging system is calculated to show the imaging performance, and the imaging performance is optimized by using ray tracing method and Stratton-Chu diffractive integral formula. The system has a better performance over the field of view ±2°.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127400942","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
Multi-band gap-coupled microstrip patch antenna 多带隙耦合微带贴片天线
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333228
Siya Mi, Y. Lee
{"title":"Multi-band gap-coupled microstrip patch antenna","authors":"Siya Mi, Y. Lee","doi":"10.1109/APCAP.2012.6333228","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333228","url":null,"abstract":"The antennas of mobile devices are now designed to be able to work in multiple modes. In this paper, we propose a triband antenna with gap-coupled microstrip patch which can be used for GSM (900MHz), DSC1800 (1800MHz) and GPS system (1575MHz). The size of the antenna is controlled to be in the same scale as the conventional mictrostrip patch antenna. A parametric study was conducted to investigate the influences of various structural parameters on the antenna performance while maintaining the patch size.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"1995 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125559521","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
Improved fast edge and facet finding algorithms for the RWG and SWG basis functions 改进了RWG和SWG基函数的快速边缘和facet查找算法
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333211
Canlin Pan, Ming Zhang, Y. Bo
{"title":"Improved fast edge and facet finding algorithms for the RWG and SWG basis functions","authors":"Canlin Pan, Ming Zhang, Y. Bo","doi":"10.1109/APCAP.2012.6333211","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333211","url":null,"abstract":"The edges/facets shared by two adjacent triangular/tetrahedral elements are necessary for the RWG/SWG basis functions. Two improved fast algorithms with linear complexities for finding the shared edges/facets from the data of mesh generators are presented in this paper, which can be employed for easy constructions of universal simulation tools and for problem tests in computational electromagnetics researches.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116222499","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
Computational electromagnetics in the SKLMMW SKLMMW中的计算电磁学
2012 IEEE Asia-Pacific Conference on Antennas and Propagation Pub Date : 2012-10-18 DOI: 10.1109/APCAP.2012.6333208
W. Hong, Wenxun Zhang
{"title":"Computational electromagnetics in the SKLMMW","authors":"W. Hong, Wenxun Zhang","doi":"10.1109/APCAP.2012.6333208","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333208","url":null,"abstract":"The research and education activities in computational electromagnetics (CEM) have been lasted over 30 years in the State Key Laboratory of Millimeter Waves (SKLMMW), Southeast University (SEU). In this talk, the research achievements in CEM in the SKLMMW are briefly reviewed.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125014347","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
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