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Field recovery over a sphere from a minimum number of data over a spiral 从螺旋上的最小数据数恢复球面上的场
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851652
O. Bucci, F. D’Agostino, C. Gennarelli, C. Savarese
{"title":"Field recovery over a sphere from a minimum number of data over a spiral","authors":"O. Bucci, F. D’Agostino, C. Gennarelli, C. Savarese","doi":"10.1109/ANTEM.2000.7851652","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851652","url":null,"abstract":"Electromagnetic field representations from a finite and non-redundant number of samples have been recently developed for arbitrary sources and observation surfaces having the same rotational symmetry [1]. In this framework, the field representation over a sphere [2] is a particularly interesting case, since it is relevant in the near field - far field (NF-FF) transformation with spherical scanning [3,4] and in the pattern recovery from measured or heavily computed data. When dealing with NF-FF transformations, a continuous movement of the robotic positioning systems makes the measurement set-up simpler and allows the reduction of the time required for the data acquisition. In particular a planar spiral arrangement of samples has been proposed in [5] and an efficient interpolation algorithm to reconstruct the near-field over a cylinder, from the data collected on a helix over it, has been developed in [6],","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"19 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":"127839625","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
High Q MMIC spiral inductor study using production silicon process 高Q MMIC螺旋电感的硅制程研究
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851646
D. Badiere, C. Nicholls, J. Wight
{"title":"High Q MMIC spiral inductor study using production silicon process","authors":"D. Badiere, C. Nicholls, J. Wight","doi":"10.1109/ANTEM.2000.7851646","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851646","url":null,"abstract":"This paper documents the results of a study based on measurements of 240 microwave monolithic spiral inductors fabricated using an industry standard silicon process. Measurements at frequencies between 1GHz and 40GHz are presented which demonstrate inductance values of 0.4nH are achievable at 15GHz with quality factors of 20. To the authors' knowledge this is one of the highest reported Qs of a monolithic inductor created in a standard RF silicon process. Four square and four octagonal inductors were design with target inductances of 0.4nH, 0.5nH, 1.0nH, and 1.5nH. Each inductor was fabricated three ways: in top metal only, in top and second from top metal layers with the layers joined by vias along the length of the inductor, and in top metal with a 1µm wide trench in the silicon substrate between the inductor windings. Ten of each inductor version were measured to increase the statistical significance of the results. Three de-embedding techniques for removing pad and feed line parasitics from the inductor measurements are discussed. As well, the efficacy of HP EEsof Series IV Momentum in predicting the performance of one of the square inductors is presented.","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":"127840393","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
Compact semi-disc microstrip patch antenna with improved bandwidth 改进带宽的紧凑型半圆盘微带贴片天线
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851746
Wang Yajun, Lee Ching Kwang
{"title":"Compact semi-disc microstrip patch antenna with improved bandwidth","authors":"Wang Yajun, Lee Ching Kwang","doi":"10.1109/ANTEM.2000.7851746","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851746","url":null,"abstract":"A novel compact semi-disc MPA with improved impedance bandwidth (SWR <2∶1) has been designed and analyzed. The probe-fed semi-disc MPA with a single shorting-pin is significantly smaller in size than that of the conventional MPAs and is thus suitable for applications in some compact systems. This semi-disc structure may be more useful compared to the circular one due to its diameter radiating edge. The performance of the antenna was accurately predicted using Ensemble software package, which is based on moment method with potential integral equations.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"58 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120892785","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
The effects of a double connected gate in a MESFET MESFET中双连接栅极的影响
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851673
A. Freundorfer
{"title":"The effects of a double connected gate in a MESFET","authors":"A. Freundorfer","doi":"10.1109/ANTEM.2000.7851673","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851673","url":null,"abstract":"For the single connected gate common-source transistor, in a 0.8µm MESFET process, f<inf>max</inf> was measured to be 50 GHz and for the double connected gate f<inf>max</inf> was 58GHz. There is better than 16% improvement in bandwidth of the double connected gate over the single connected gate. The reduced R<inf>g</inf> due to the double connection on the gate should contribute to a lower noise transistor. It was also shown that for the common gate transistor f<inf>max</inf> also increased.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"204 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":"124586772","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
Formulation of lumped elements in a general (conformal) coordinate system 一般(共形)坐标系中集总元素的公式
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851724
R. Siushansian, N. Simons, J. Lovetri
{"title":"Formulation of lumped elements in a general (conformal) coordinate system","authors":"R. Siushansian, N. Simons, J. Lovetri","doi":"10.1109/ANTEM.2000.7851724","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851724","url":null,"abstract":"In this paper, the fundamental theory of modelling passive and active linear lumped elements for a generalised coordinate system is discussed. A general procedure for deriving expressions for modelling distributed lumped elements is outlined via an example of a distributed lumped voltage source.","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":"122917983","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
MMIC adaptive transversal preamplifier for high speed lightwave systems 高速光波系统的MMIC自适应横向前置放大器
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851674
A. Freundorfer, D. Choi, Y. Jamani
{"title":"MMIC adaptive transversal preamplifier for high speed lightwave systems","authors":"A. Freundorfer, D. Choi, Y. Jamani","doi":"10.1109/ANTEM.2000.7851674","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851674","url":null,"abstract":"A fractionally spaced preamplifier using cascode MESFET's and a distributed structure for pulse shaping has been designed for use in high speed lightwave systems. The capability of the technique is demonstrated with a MMIC implementation using Nortel's 0.8 µm GaAs MESFET technology. Frequency response measurements demonstrate that the bandwidth can be controlled up to 5 GHz.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"29 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":"131620145","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
An overview of reflectarray technology: History, achievements, and future challenges 反射技术综述:历史、成就和未来挑战
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851715
J. Shaker, A. Petosa, A. Ittipiboon, M. Cuhaci
{"title":"An overview of reflectarray technology: History, achievements, and future challenges","authors":"J. Shaker, A. Petosa, A. Ittipiboon, M. Cuhaci","doi":"10.1109/ANTEM.2000.7851715","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851715","url":null,"abstract":"The historical development of reflectarrays was briefly outlined. Different types of reflectarrays were presented. The method of analysis used for each type was briefly discussed. The advantages and disadvantages of reflectarrays were presented. Some examples were given to demonstrate the multifunction capabilities of reflectarrays. Some of the future challenges on the way to further development of reflectarrays were discussed.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"64 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":"116964167","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 novel leaky millimeter-wave linear slot array 一种新型漏型毫米波线性缝隙阵列
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851677
A. Grbic, G. Eleftheriades
{"title":"A novel leaky millimeter-wave linear slot array","authors":"A. Grbic, G. Eleftheriades","doi":"10.1109/ANTEM.2000.7851677","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851677","url":null,"abstract":"A novel leaky-wave antenna operating at 30 GHz is introduced in this paper. The antenna investigated is a coplanar waveguide (CPW) fed linear array of closely-spaced capacitive transverse slots. Measured radiation patterns, gain and directivity of the structure are presented. This type of tilted-beam antenna could find use in broadband wireless communications, collision-avoidance, surveillance, and tolling systems.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"44 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":"114952554","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
Transfer matrix method for the analysis of dielectric resonators inside multilayer cylindrical cavities 多层圆柱腔内介质谐振腔分析的传递矩阵法
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851716
A. M. Shams-Zadeh-Amiri, S. Safavi-Naeini, S. Chaudhuri, R. Sabry
{"title":"Transfer matrix method for the analysis of dielectric resonators inside multilayer cylindrical cavities","authors":"A. M. Shams-Zadeh-Amiri, S. Safavi-Naeini, S. Chaudhuri, R. Sabry","doi":"10.1109/ANTEM.2000.7851716","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851716","url":null,"abstract":"This paper addresses a fast and numerically efficient radial mode matching method for resonant frequencies and modes of dielectric resonators in multilayer cylindrical cavities. The distinguishing feature of this approach is using transfer matrix method both in the axial and radial direction. The radial TE and TM modes of a multilayer parallel-plate waveguide can be obtained by applying the transfer matrix method in the axial direction and the characteristic equation of the cavity resonator is obtained by applying the transfer matrix method in the radial direction. To address the numerical issues, we have analyzed a simple dielectric resonator structure.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"52 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":"121605307","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
An advanced multipurpose electromagnetic field simulation tool with multiple time domain engines 一个先进的多用途电磁场仿真工具，具有多个时域引擎
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851726
P. So, W. Hoefer
{"title":"An advanced multipurpose electromagnetic field simulation tool with multiple time domain engines","authors":"P. So, W. Hoefer","doi":"10.1109/ANTEM.2000.7851726","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851726","url":null,"abstract":"We have developed a multipurpose electromagnetic field simulation tool for microwave and millimeter wave engineering. This software package has four built-in TLM engines — 2D-Shunt Node. 2D-Series Node. 3D-SCN and 3D-GSCN Besides having multiple time domain engines, the software features many data processing modules for displaying time and frequency domain responses as well as near and far field radiation patterns. It also has an advanced signal identification module to compute frequency response of high Q structures.","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":"122736707","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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