2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference最新文献_第6页

Design and implementation of a new UWB microstrip antenna 一种新型超宽带微带天线的设计与实现

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552511

M. Mohammadirad, N. Komjani, M. Yazdi

引用次数: 12

A study of the radiation efficiency of a half wavelength dipole 半波长偶极子辐射效率的研究

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552541

M. D. Estarki, R. Vaughan

{"title":"A study of the radiation efficiency of a half wavelength dipole","authors":"M. D. Estarki, R. Vaughan","doi":"10.1109/ANTEM.2010.5552541","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552541","url":null,"abstract":"Antenna efficiency directly impacts the efficiency of communications and sensing applications, and the emerging use of high frequencies has renewed interest in its mechanisms and estimation. In this paper, the radiation efficiency of the half-wavelength center-fed circular dipole is calculated for representative metals. Both the approximate and the accurate current distribution models for the wire cross section are used. The current distribution model for along the wire is the usual sinusoidal form. From the modeled current distribution, we calculate the ohmic resistance and the radiation efficiency of the dipole. The results quantify the wire thickness and frequency ranges for which the approximate model for the cross section current distribution holds, and demonstrates the limiting antenna loss at high frequencies. For SHF and EHF, using conductors such as stainless steel means that the ohmic resistance is in the same order as the radiation resistance. When using gold coatings at these frequencies, the situation improves, but a coating much larger than that available from regular sputtering is required to attain the limiting efficiency.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132944146","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

Landmines detection using finite-difference time-domain and artificial neural networks 基于时域有限差分和人工神经网络的地雷探测

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552468

S. Zainud-Deen, E. S. El-Hadad, K. Awadalla

引用次数: 3

Electromagnetic scattering by periodic conducting strip grating on grounded dielectric slab: Study of the angular and polarization dependence in different incident planes 介电板上周期性导电条形光栅的电磁散射:不同入射平面的角和偏振关系研究

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552572

A. Foroozesh, L. Shafai

引用次数: 2

GPS wideband microstrip antenna array featuring compact Schiffman phase shifters GPS宽带微带天线阵列采用紧凑型希夫曼移相器

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552509

S. Raut, A. Petosa

引用次数: 2

Truncation-error reduction in 2D spherical/cylindrical near-field scanning 二维球面/圆柱近场扫描截短误差减小

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552551

Kristopher T. Kim

引用次数: 0

Design of a light–weight digital beam forming antenna for future sar applications 面向未来sar应用的轻型数字波束形成天线设计

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552363

Brian Cascarano, J. Colinas, R. Girard, P. Plourde

引用次数: 0

Distortion measurement and compensation in a synthetic aperture radar phased-array antenna 合成孔径雷达相控阵天线畸变测量与补偿

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552555

David Peterman, K. James, V. Glavac

引用次数: 14

Efficiency of boundary integral equation techniques for internal resonance problem 边界积分方程法求解内部共振问题的有效性

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552546

M. Ozturk, E. Korkmaz

引用次数: 0

Monostatic RCS hot-spot modelling of large grooved structures 大型沟槽结构的单稳态RCS热点建模

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI: 10.1109/ANTEM.2010.5552544

K. Y. Sze, S. Kashyap

{"title":"Monostatic RCS hot-spot modelling of large grooved structures","authors":"K. Y. Sze, S. Kashyap","doi":"10.1109/ANTEM.2010.5552544","DOIUrl":"https://doi.org/10.1109/ANTEM.2010.5552544","url":null,"abstract":"The monostatic radar cross section (RCS) hot-spot characteristics of electrically large grooved structures were analyzed. The structures' monostatic RCS and inverse synthetic aperture radar (ISAR) image properties [1] at X-band were characterized for the far-field. These structures were assumed to have perfect electric conductor (PEC) properties. It is anticipated that the study of these simple structures, from a 2D analysis approach [2], could yield good insights into the RCS and ISAR characteristics of electrically large and complex tubular structures (e.g. intake cavities of jet engines) [3] at microwave frequencies. In the modelling, computer aided design (CAD) models of these structures were created and meshed. They were then utilized as inputs into an RCS computer code called RAPPORT [4]. Since this code was implemented using the ray-tracing technique based on physical optics (PO), it employs a parameter which allows the user to define the maximum number of “physical optics reflections” (PO reflections), also called specular reflections, off the meshed surfaces in a single ray traced. However, diffraction and polarization effects were not emphasized in this study due to limitations in RAPPORT.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123429222","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