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Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]最新文献

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Near-field measurement of conical horns loaded with metallic objects 载金属物体的锥形角的近场测量
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851658
M. Clénet, L. Shafai
{"title":"Near-field measurement of conical horns loaded with metallic objects","authors":"M. Clénet, L. Shafai","doi":"10.1109/ANTEM.2000.7851658","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851658","url":null,"abstract":"Measurements of the near-field indicates that the directivity enhancement obtained by the insertion of disc(s) inside conical horns of different flare angles are mainly due to the phase equalization of the electromagnetic field in the aperture. The amplitude variation is not especially improved, except when three discs are inserted.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114367343","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
Efficient (M)MIC-structure investigation based on fast spectral domain integral equation techniques 基于快速谱域积分方程技术的高效mic结构研究
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851744
T. Vaupel, V. Hansen
{"title":"Efficient (M)MIC-structure investigation based on fast spectral domain integral equation techniques","authors":"T. Vaupel, V. Hansen","doi":"10.1109/ANTEM.2000.7851744","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851744","url":null,"abstract":"The presented space/spectral domain integral equation concept with an improved spectral domain integration in cartesian wavenumbers shows a high computational performance applied to a wide range of different (M)MIC-structures. The outlined low performance of iterative linear equation solvers forms the main problem for the development of iterative MoM-concepts so far, but ongoing investigations of multilevel block-matrix strategies seem to offer very promising properties making them well-suited for future iterative MoM frameworks.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127092887","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: 3
Analysis of multi-screen double square frequency selective surface in multilayered medium by subsectional current approximation 用分段电流近似法分析多层介质中多屏双平方频率选择面
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851708
A. Qing, Ching-Kwang Lee
{"title":"Analysis of multi-screen double square frequency selective surface in multilayered medium by subsectional current approximation","authors":"A. Qing, Ching-Kwang Lee","doi":"10.1109/ANTEM.2000.7851708","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851708","url":null,"abstract":"A generalized full-wave analysis for multi-screen double square FSS sandwiched in multilayered medium is presented. The results are in good agreement.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129276808","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
Aperture coupled dual band dual circularly polarized stacked microstrip antenna 孔径耦合双频双圆极化堆叠微带天线
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851719
Satish K. Sharma, L. Shafai
{"title":"Aperture coupled dual band dual circularly polarized stacked microstrip antenna","authors":"Satish K. Sharma, L. Shafai","doi":"10.1109/ANTEM.2000.7851719","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851719","url":null,"abstract":"The dual band, cross CP design (namely LHCP and RHCP) presented in the paper is based on simulation results. The design involves some typical sensitive parameters such as thickness of substrate materials, unequal cross-slots lengths and orientation. The two well separated frequency bands of the proposed dual band antenna may be suitable for simultaneous transmission and reception applications. The reason for selecting the design parameters have been discussed.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126830559","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
Microwave heating of buried targets by non-planar Electromagnetic waves 非平面电磁波对埋地目标的微波加热
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851655
W. Chamma, S. Kashyap
{"title":"Microwave heating of buried targets by non-planar Electromagnetic waves","authors":"W. Chamma, S. Kashyap","doi":"10.1109/ANTEM.2000.7851655","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851655","url":null,"abstract":"In this work, microwave heating of a buried target by a non-planar Electromagnetic (EM) wave source is investigated numerically using the Finite-Difference Time-Domain (FDTD) technique. Such a non-planar wave source is obtained by placing the target in the Fresnel region of a circular aperture representing a parabolic reflector antenna. The Huygen's source equivalence procedure is used to model the fields emanating from such an antenna inside the FDTD lattice. The fields inside and in the neighbourhood of a buried target are calculated for different soil parameters.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126667058","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
Evaluation of errors in modeling electromagnetic fields in the human body at low frequencies 人体低频电磁场建模误差评估
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851660
T. Dawson, M. Potter, M. Stuchly
{"title":"Evaluation of errors in modeling electromagnetic fields in the human body at low frequencies","authors":"T. Dawson, M. Potter, M. Stuchly","doi":"10.1109/ANTEM.2000.7851660","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851660","url":null,"abstract":"In the last decade computations of electric fields induced in realistic heterogeneous models of the human body have been performed for exposures to electric or magnetic fields of very low frequencies, typically 50 or 60 Hz. The results of these simulations are often relied on to prevent exposures to levels that elicit undesirable biological effects. For instance, neural excitation is well known to depend on the electric field in tissue and its spatial variation. We have in performed extensive modeling of such situation; such modeling has also been done in other laboratories. One of the parameters that is often used, specifically in the health protection guidelines is the induced current density in a small tissue volume.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128865185","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
Reflectarray phase errors due to finite patch size 由于有限的贴片大小造成的反射射线相位误差
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851730
K. Y. Sze, L. Shafai
{"title":"Reflectarray phase errors due to finite patch size","authors":"K. Y. Sze, L. Shafai","doi":"10.1109/ANTEM.2000.7851730","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851730","url":null,"abstract":"Due to the finite sizes of the patches in the patch array of a microstrip reflectarray, the phase errors attributed to this size factor is generally significant at large subtended feed angles, since a large difference in the phase delay exists across the dimension of each patch. The larger the patch dimension is, the larger the phase error becomes, especially at large subtended feed angles. This will degrade the reflectarray performance. Nevertheless, such phase errors are reduced by increasing the F/D ratios, and by employing small patch dimensions as much as possible.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132296240","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 study of coplanar waveguide on semiconductor substrate 半导体衬底共面波导的研究
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851667
M. Elkordy
{"title":"A study of coplanar waveguide on semiconductor substrate","authors":"M. Elkordy","doi":"10.1109/ANTEM.2000.7851667","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851667","url":null,"abstract":"An accurate method for evaluating the propagation characteristics of a coplanar waveguide printed on a semiconductor substrate is given. In this method the Green's second identity is used to form an integral equations, which is solved by iterative method without any approximation. The solution of such integral equation gives the depletion layer boundaries as well as the capacitance. The depletion layer capacitance has been used in transmission line model to determine the propagation characteristics. The obtained results are found to be very accurate when compared with published experimental data available in the literature.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132850631","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
Small balance-fed antenna system for handset 小型手机平衡馈电天线系统
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851695
H. Morishita, Yongho Kim, H. Furuuchi, K. Fujimoto
{"title":"Small balance-fed antenna system for handset","authors":"H. Morishita, Yongho Kim, H. Furuuchi, K. Fujimoto","doi":"10.1109/ANTEM.2000.7851695","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851695","url":null,"abstract":"A small balance-fed NMHDA is proposed, based on the essential design concept for the handset antenna, and its performance, when it is built in the handset unit, is analyzed both theoretically and experimentally. The results show that current distributions on the ground plane can be made very little by using the balanced antenna system for the handset antenna. This implies that the built-in balanced NMHDA may be very effective for avoiding the degradation of the antenna performance due to the operator's hand and/or head. More detailed analyses on the performance of a balance-fed antenna system, such as impedance characteristics, gain, and the body effect in the practical application, are shown at the presentation.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133102223","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
Effect of shorting posts or vias on stacked U-slot microstrip antenna performance 短柱或过孔对堆叠u槽微带天线性能的影响
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851718
Satish K. Sharma, M. Clénet, L. Shafai
{"title":"Effect of shorting posts or vias on stacked U-slot microstrip antenna performance","authors":"Satish K. Sharma, M. Clénet, L. Shafai","doi":"10.1109/ANTEM.2000.7851718","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851718","url":null,"abstract":"The presented stacked shorted U-slot microstrip antenna shows a possibility to achieve an wide 2∶1 VSWR bandwidth of 68%, but, with almost dual band gain behaviour separated by frequency 4.20 GHz. The reason for the gain drop has been explained with the help of current plot. The simulated and measured radiation patterns data (Table 1) have shown that antenna exhibits almost stable co-polarization patterns and acceptable broadside cross polarization characteristics except around 4.20 GHz.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132021359","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
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