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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)最新文献

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Radiation of a vertical electric dipole over a resistive sheet 垂直电偶极子在电阻片上的辐射
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789397
C. Gennarelli, G. Pelosi, G. Toso
{"title":"Radiation of a vertical electric dipole over a resistive sheet","authors":"C. Gennarelli, G. Pelosi, G. Toso","doi":"10.1109/APS.1999.789397","DOIUrl":"https://doi.org/10.1109/APS.1999.789397","url":null,"abstract":"The authors analyse the electromagnetic field radiated by a vertical electric dipole (VED) over a penetrable resistive sheet characterised by infinite extension, to derive the relevant Green's function, and discuss the applicability of this Green's function in practical problems involving structures with finite dimensions.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123627032","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
Beamspace STAP for circular arrays 圆形阵列的波束空间STAP
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789431
I. Jouny
{"title":"Beamspace STAP for circular arrays","authors":"I. Jouny","doi":"10.1109/APS.1999.789431","DOIUrl":"https://doi.org/10.1109/APS.1999.789431","url":null,"abstract":"Beamspace space-time adaptive processing for oversampled circular antenna arrays using refocusing and/or interpolating beamspace transformation is examined in this study. Three beamspace transformations that rely on array interpolation, phase adjustment, and Toeplitz induced mapping are compared in the context of pulse to pulse space-time adaptive processing. The paper presents recommendations regarding the applications of these algorithms in STAP and presents a comparison in terms of performance, computer processing time, and robustness.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114301904","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
Inflatable microstrip reflectarray antennas at X and Ka-band frequencies X和ka波段的充气式微带反射天线
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.788274
John Huang, A. Feria
{"title":"Inflatable microstrip reflectarray antennas at X and Ka-band frequencies","authors":"John Huang, A. Feria","doi":"10.1109/APS.1999.788274","DOIUrl":"https://doi.org/10.1109/APS.1999.788274","url":null,"abstract":"Inflatable antenna technology is being developed by JPL/NASA to enable the capabilities of low mass, high packaging efficiency, and low-cost deployment for future spacecraft high-gain and large aperture antennas. One of the technologies being considered is the inflatable microstrip reflectarray. A conventional inflatable parabolic reflector antenna will offer similar advantages with the added capability of wide electrical bandwidth. However it suffers from the difficulty of maintaining its required large, thin, and curved-parabolic surface in the space environment. Since the microstrip reflectarray has \"natural\" flat reflecting surface, it is much easier to maintain the required surface tolerance using an inflatable structure. This is the primary reason, despite its narrow bandwidth characteristic, that the inflatable microstrip reflectarray is being studied. This article discusses an already-developed one-meter X-band inflatable microstrip reflectarray and a three-meter Ka-band inflatable microstrip reflectarray which is currently under development. Both antennas' RF structures are designed at JPL and their mechanical inflatable structures are designed and manufactured at ILC Dover, Inc.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114542412","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: 25
Analysis of reflection from multilayer cylinder by using a black-hole approach 用黑洞方法分析多层圆柱体的反射
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789528
Z. Šipuš, P. Kildal
{"title":"Analysis of reflection from multilayer cylinder by using a black-hole approach","authors":"Z. Šipuš, P. Kildal","doi":"10.1109/APS.1999.789528","DOIUrl":"https://doi.org/10.1109/APS.1999.789528","url":null,"abstract":"We propose a new method for calculating the reflection from multilayer cylinders, which is useful in analyzing structures that are not a full cylinder, such as curved radomes. By using the black-hole approach the fields inside the innermost region of the structure are expressed in terms of only inward propagating waves, which corresponds to having an ideal termination (black hole) on axis. The calculated reflection from a dielectric cylinder and a dielectric tube show good agreement with the results obtained by using geometric optics.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121467099","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
EM scattering analysis by a loaded trough on a ground plane using SIBC-E polarization case 基于SIBC-E极化的地平面加载槽的电磁散射分析
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789402
R. Sato, Hiroshi Shirai
{"title":"EM scattering analysis by a loaded trough on a ground plane using SIBC-E polarization case","authors":"R. Sato, Hiroshi Shirai","doi":"10.1109/APS.1999.789402","DOIUrl":"https://doi.org/10.1109/APS.1999.789402","url":null,"abstract":"In this paper, based on the formulation of the Kobayashi and Nomura method, EM plane wave scattering by a material loaded trough on a ground plane is approximately analyzed by applying the simplest standard impedance boundary condition (SIBC). We adapted the SIBC to the eigen-function expansion. We have already presented the H polarization case in Sato and Shirai (1998). So the formulation is extended and derived here for the E polarization case. In order to check the validity of this approximation, numerical calculations have been done for various parameters. Differences between the E and H polarizations have been also discussed.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"36 1-3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114029389","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: 5
Using directive antennas to reduce multipath fading in indoor PCN systems 利用定向天线减少室内PCN系统中的多径衰落
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789305
L. Talbi, G. Delisle
{"title":"Using directive antennas to reduce multipath fading in indoor PCN systems","authors":"L. Talbi, G. Delisle","doi":"10.1109/APS.1999.789305","DOIUrl":"https://doi.org/10.1109/APS.1999.789305","url":null,"abstract":"There is a growing need for indoor wireless PCN systems to provide high speed digital transmission between computer terminals and peripherals. Millimeter-waves were selected to implement this new system application, because of the capability to allow easy frequency re-use and the development of MMIC technology. This paper focuses on the characteristics of the MM-waves propagation with particular emphasis on the utilization of antenna directivity to combat multipath fading. Experimental results were conducted at 37.2 GHz under line-of-sight conditions. CW recordings are analyzed in terms of small-scale fading and path loss.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114850435","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
The steepest descent fast multipole method (SDFMM) for solving combined field integral equation pertinent to rough surface scattering 求解粗糙表面散射联合场积分方程的最陡下降快速多极子法
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789195
M. El-Shenawee, V. Jandhyala, E. Michielssen, W. Chew
{"title":"The steepest descent fast multipole method (SDFMM) for solving combined field integral equation pertinent to rough surface scattering","authors":"M. El-Shenawee, V. Jandhyala, E. Michielssen, W. Chew","doi":"10.1109/APS.1999.789195","DOIUrl":"https://doi.org/10.1109/APS.1999.789195","url":null,"abstract":"The objective of this work is to solve the combined field integral equation (CFIE) using the enhanced SDFMM to analyse electromagnetic scattering from practical random rough surfaces. For scattering problems involving low grazing incident waves, we found that the CFIE converges very fast compared with the EFIE, which converges very slowly for the same problem. Scattering at low grazing angles requires modeling of an infinite rough surface by a finite surface large enough such that the incident antenna beam excites no edge currents. In order to thoroughly investigate such a special scattering problem, a Monte Carlo simulation using many random surface realizations should be conducted which necessitates a fast converging and accurate technique such as the enhanced as SDFMM.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124035922","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: 13
A new method to compute the fundamental mode resonant frequencies of microstrip annular rings 一种计算微带环形环基模谐振频率的新方法
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789439
G. Panariello, F. Schettino, L. Verolino
{"title":"A new method to compute the fundamental mode resonant frequencies of microstrip annular rings","authors":"G. Panariello, F. Schettino, L. Verolino","doi":"10.1109/APS.1999.789439","DOIUrl":"https://doi.org/10.1109/APS.1999.789439","url":null,"abstract":"The aim of this paper is the evaluation of the resonant frequencies of the fundamental mode of a microstrip annular ring resonator whose geometry is shown. We propose a new method to evaluate the resonant frequency of the fundamental mode of an annular ring; in particular we expanded the unknown current densities according to a set of functions factorising the right edge behaviour of the unknowns in order to accelerate the convergence of the series.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127774077","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
Nonlinear effects of HTSC microstrip corner-cut patch filter with and without HTSC feed line 有和没有HTSC馈线的HTSC微带切角贴片滤波器的非线性效应
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789118
H. Tang, S. Safavi-Naeini, Y. Chow
{"title":"Nonlinear effects of HTSC microstrip corner-cut patch filter with and without HTSC feed line","authors":"H. Tang, S. Safavi-Naeini, Y. Chow","doi":"10.1109/APS.1999.789118","DOIUrl":"https://doi.org/10.1109/APS.1999.789118","url":null,"abstract":"A HTSC microstrip corner-cut patch filter is investigated when the microstrip feed line is constructed from HTSC and non-HTSC materials. The nonlinear effects of HTSC material on harmonic generation, insertion loss and reflection coefficient are presented for different input power levels.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127777474","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
A uniplanar quasi-Yagi antenna with wide bandwidth and low mutual coupling characteristics 具有宽带宽和低互耦特性的准八木天线
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI: 10.1109/APS.1999.789463
Y. Qian, William R. Deal, N. Kaneda, T. Itoh
{"title":"A uniplanar quasi-Yagi antenna with wide bandwidth and low mutual coupling characteristics","authors":"Y. Qian, William R. Deal, N. Kaneda, T. Itoh","doi":"10.1109/APS.1999.789463","DOIUrl":"https://doi.org/10.1109/APS.1999.789463","url":null,"abstract":"We report for the first time a planar quasi-Yagi antenna printed on a single layer of high dielectric constant substrate (Durold, /spl epsiv//sub r/=10.2) which measures 48% bandwidth (VSWR<2). The antenna radiates an end-fire beam, with a front-to-back ratio >15 dB and cross-polarization level below -12 dB across the entire frequency band. A very low mutual coupling level of below -22 dB has been measured for a two-element array with /spl lambda//sub 0//2 separation.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126221833","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: 109
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