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Analysis of coupled microstrip lines using integral method 耦合微带线的积分分析
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851665
M. Elkordy
{"title":"Analysis of coupled microstrip lines using integral method","authors":"M. Elkordy","doi":"10.1109/ANTEM.2000.7851665","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851665","url":null,"abstract":"In this paper, an integral method for evaluating the propagation even and odd mode characteristics of coupled microstrip lines is presented. In this method, the Helmholtez equation has been converted into integral equation using Green's second identity. The propagation constant for both modes of propagation is determined by using some basis functions. The obtained results are found to be very accurate when compared with published data available in the literature.","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":"116137610","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
Proximity-coupled patch antenna with dielectric loading 带介电负载的接近耦合贴片天线
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851736
S. Thirakoune, A. Ittipiboon, A. Petosa
{"title":"Proximity-coupled patch antenna with dielectric loading","authors":"S. Thirakoune, A. Ittipiboon, A. Petosa","doi":"10.1109/ANTEM.2000.7851736","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851736","url":null,"abstract":"This paper presents an air dielectric microstrip patch, fed with a proximity-coupled microstrip line. A high permittivity dielectric block was placed at the end of the microstrip line to improve the impedance match to the patch. Preliminary results from the prototype show the 10 dB impedance bandwidth to be 20% with a stable gain curve throughout the bandwidth.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"11 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":"126588556","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 statistical approach for the determination of the probability of upset of digital circuits 一种确定数字电路扰动概率的统计方法
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851675
C. Gardner, S. Kashyap, J. Walsh
{"title":"A statistical approach for the determination of the probability of upset of digital circuits","authors":"C. Gardner, S. Kashyap, J. Walsh","doi":"10.1109/ANTEM.2000.7851675","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851675","url":null,"abstract":"In this paper, a statistical method is proposed for the determination of the probability of circuit upset due to an electromagnetic (EM) transient. This method has the advantage that control of the timing of the transient EM pulse relative to the operational cycle of the circuit is not required. Nor, in fact, is detailed knowledge of the susceptible portion of the circuit. This method has been demonstrated experimentally by studying the susceptibility of a model circuit to upset when exposed to an electromagnetic transient.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"69 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":"126226693","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
Symmetry considerations in analysis of finite microstrip antennas using SEMN method 有限微带天线SEMN分析中的对称性考虑
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851735
A. Tavakoli, F. Tavakkol-Hamedani, L. Shafai
{"title":"Symmetry considerations in analysis of finite microstrip antennas using SEMN method","authors":"A. Tavakoli, F. Tavakkol-Hamedani, L. Shafai","doi":"10.1109/ANTEM.2000.7851735","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851735","url":null,"abstract":"Using surface equivalence principle and multiple network theory (SEMN) a rigorous method has been introduced for the analysis of finite microstrip antennas [l]. One practical limitation of rigorous methods is that they need extensive CPU time and storage to analyze a finite structure which is not too small electrically. In this article, three symmetry considerations are introduced to reduce the number of unknowns and computations and eliminate this drawback.","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":"126240812","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
Design of an 8.5/25.5 GHz active frequency tripler MMIC 8.5/25.5 GHz有源三倍频MMIC的设计
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851745
C. J. Verver, M. Stubbs, M. Kiyokawa
{"title":"Design of an 8.5/25.5 GHz active frequency tripler MMIC","authors":"C. J. Verver, M. Stubbs, M. Kiyokawa","doi":"10.1109/ANTEM.2000.7851745","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851745","url":null,"abstract":"The design of an active frequency tripler monolithic microwave integrated circuit (MMIC) for local multipoint communications systems (LMCS) will be described. The x3 multiplier was designed to operate over a 24–27GHz range, or 12% bandwidth, and uses a PHEMT device in common source configuration biased at a class AB quiescent point. Appropriate input and output matching circuits and terminations for undesired harmonics were designed for the multiplier. The circuit was fabricated at a commercial EHF GaAs MMIC foundry with a 0.2 µm low noise AlGaAs/GaAs PHEMT process. The overall chip size is 2.8mm × 1.4mm fabricated on a 100µm thick GaAs substrate. Conversion loss varies between 6dB and 8dB across the 24–27GHz output frequency band. Fundamental, fo, (8–9GHz) suppression is at least 15dB while 2fo (16–18GHz) suppression varies between 10dB and 16dB from the lower to upper edge of the frequency band. Maximum 3rd harmonic output power is about 4dBm with a minimum DC power consumption of 154mW.","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":"130389424","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
Determination of Green's functions for circular disk microstrip antenna having uniaxial substrate 单轴基板圆盘微带天线格林函数的测定
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851678
Ç. S. Gürel, E. Yazgan
{"title":"Determination of Green's functions for circular disk microstrip antenna having uniaxial substrate","authors":"Ç. S. Gürel, E. Yazgan","doi":"10.1109/ANTEM.2000.7851678","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851678","url":null,"abstract":"In order to perform spectral domain analysis of the microstrip antenna having uniaxial substrate and circular patch shape it is useful to express Green's functions in Hankel transform domain. In this study, these functions are obtained by using Hertz vector formulation in order to be used in the determination of the main resonance characteristics of the antenna.","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":"130393676","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
Numerical analysis of a biconical dielectric resonator antennas for wideband applications 宽带双圆锥介质谐振器天线的数值分析
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851684
A. Kishk, A. Glisson, Yan Yin
{"title":"Numerical analysis of a biconical dielectric resonator antennas for wideband applications","authors":"A. Kishk, A. Glisson, Yan Yin","doi":"10.1109/ANTEM.2000.7851684","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851684","url":null,"abstract":"Dielectric resonators are made of high dielectric constant materials and have been used efficiently as microwave components in filter design because of their high quality factor. Therefore, many engineers have doubted their usefulness as radiators, thinking that they would not be efficient radiators and that they would have very small radiation bandwidth. It has been shown, however that some modes have a small radiation Q-factor [1]. The radiation efficiency has also been predicted experimentally for the HEM11δ mode of a cylindrical dielectric resonator with ∈r=38. The radiation efficiency was found to be better than 98% [2]. Several research groups have studied the dielectric resonator antennas for different geometries using different numerical methods. In [3] an approximate magnetic cavity model is used to predict the resonant frequency and radiation patterns of cylindrical dielectric resonator antennas. In [4] the method of moments for bodies of revolution is used to accurately predict the radiation patterns. Also, the Green's function method is used to predict the input impedance and the radiation patterns for hemispherical dielectric resonator antennas excited by a coaxial probe or a narrow slot [5]–[6]. These studies helped us to understand the characteristics of this radiator better and showed the need for more accurate analysis methods. Therefore, the method of moments is used here to predict the input impedances of this antenna as in [7]–[8]. When the Finite-difference Time-domain method (FDTD) became mature, many references became available in the literature for such analysis [9], many of which cannot be listed here for brevity. The FDTD method can show us many of the characteristics of the antenna directly without the need for more processing of the data, such as resonant frequencies, field distributions, input impedance, and radiation patterns.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"15 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":"132964068","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
Some concepts for a line-source-fed microstrip reflectarray 线源馈电微带反射天线的一些概念
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851731
K. Y. Sze, L. Shafai
{"title":"Some concepts for a line-source-fed microstrip reflectarray","authors":"K. Y. Sze, L. Shafai","doi":"10.1109/ANTEM.2000.7851731","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851731","url":null,"abstract":"In brief, some concepts for a line-source-fed microstrip reflectarray are discussed in this paper. The near-field analysis performed for the line-source feed excited using different tapered source distributions, instead of the uniform source distribution, indicates some improvements to certain radiation properties of the reflectarray.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"33 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":"132356016","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 influence of terminal conditions on input impedance of double sided printed dipole elements 终端条件对双面印刷偶极子元件输入阻抗的影响
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851694
M. Mikavica
{"title":"The influence of terminal conditions on input impedance of double sided printed dipole elements","authors":"M. Mikavica","doi":"10.1109/ANTEM.2000.7851694","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851694","url":null,"abstract":"The influence of the so called terminal conditions on input impedance of both conventional and double sided printed dipole elements has been investigated. It has been shown that dipole impedance can be most effectively controlled by proper change of the capacitance between antenna terminals. It was also found that endloading dipole arms with shaped loads produce smaller or almost no effect on input impedance.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"75 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":"127281977","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
Shaping Large Adaptive Reflector Cassegrain configuration using feed-reflector 整形大自适应反射器卡塞格伦结构使用馈电反射器
Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI: 10.1109/ANTEM.2000.7851696
P. Mousavi, L. Shafai, B. Veidt, P. Dewdney
{"title":"Shaping Large Adaptive Reflector Cassegrain configuration using feed-reflector","authors":"P. Mousavi, L. Shafai, B. Veidt, P. Dewdney","doi":"10.1109/ANTEM.2000.7851696","DOIUrl":"https://doi.org/10.1109/ANTEM.2000.7851696","url":null,"abstract":"Three shaping processes were conducted on the LAR system based on a diffraction synthesis technique, using Jacobi-Fourier series to represent the reflector surface. An efficiency of 78.5% was obtained by shaping all three reflectors. The final radiation patterns of each case were compared to those of Grasp8w, and showed an excellent agreement.","PeriodicalId":416991,"journal":{"name":"Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]","volume":"33 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":"114854799","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
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