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2005 18th International Conference on Applied Electromagnetics and Communications最新文献

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Conformal Fractal Loop Antennas for RFID Tag Applications RFID标签的保角分形环天线应用
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.205008
A. Andrenko
{"title":"Conformal Fractal Loop Antennas for RFID Tag Applications","authors":"A. Andrenko","doi":"10.1109/ICECOM.2005.205008","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.205008","url":null,"abstract":"This paper presents the design of novel conformal fractal loop antennas proposed for the rapidly developing RF identification (RFID) wireless technology. Two antennas, based on Koch and Hilbert fractal geometries, are designed and optimized for 0.953 GHz RFID band. Key design requirement has been maximizing the antenna gain and directivity that results in increasing the read range of RFID system. Full-wave EM simulation results illustrating the radiation characteristics of the proposed antennas are presented. Antenna layout has been defined to fit the specified size of RFID tags. The design trade-off between the space-filling properties of the fractal geometry and required antenna gain performance is discussed","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123559753","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: 16
Education in Antennas – Phased Array Antenna 天线教育–相控阵天线
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.205004
T. Debogovic, J. Bartolić, D. Crnogorac
{"title":"Education in Antennas – Phased Array Antenna","authors":"T. Debogovic, J. Bartolić, D. Crnogorac","doi":"10.1109/ICECOM.2005.205004","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.205004","url":null,"abstract":"The paper describes the beam forming network that feeds linear antenna array of four monopoles above the ground plane and enables an electrical deflection of the array radiation pattern into the demanded direction. This solution is intended for practical teaching students of antenna and microwave courses","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126824829","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 antenna based on an open resonator 基于开式谐振器的天线
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.205009
G. Di Massa, L. Boccia, G. Amendola
{"title":"An antenna based on an open resonator","authors":"G. Di Massa, L. Boccia, G. Amendola","doi":"10.1109/ICECOM.2005.205009","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.205009","url":null,"abstract":"In the present work a novel Gaussian beam antenna is presented. The antenna is based on a half of an open resonator structure with a metallic grid placed at the section of the resonating structure. A simple equivalent circuit to describe the antenna input impedance is derived. Results from full wave simulations will be presented and discussed","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441406","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
Characterization of Mobile Terminals in Rayleigh Fading by Using Reverberation Chamber 用混响室表征移动终端的瑞利衰落
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.204910
P. Kildal, C. Orlenius
{"title":"Characterization of Mobile Terminals in Rayleigh Fading by Using Reverberation Chamber","authors":"P. Kildal, C. Orlenius","doi":"10.1109/ICECOM.2005.204910","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.204910","url":null,"abstract":"This paper gives an overview of the different measurement procedures that have been developed the last five years for characterizing small antennas and complete wireless terminals that are intended for use in environments with Rayleigh fading. The measurements make use of a reverberation chamber which in principle is a resonant cavity, and they include measurements of the classical radiation efficiency of small antennas (due to mismatch and ohmic losses), the \"gain\" when using diversity antennas, the maximum available capacity of a MIMO antenna system, as well as radiated power, receiver sensitivity (by measuring bit error rate) and implemented diversity gain of actual terminals. The radiation efficiency and radiated power were presented at previous ICECom conference, so the main attention will be given to the later developed receiver sensitivity and diversity procedures","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114388497","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: 15
Analysis of some parameters influencing moisture quantity measurements in wheat with NIR technique 影响近红外测量小麦水分的几个参数分析
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.204959
M. Mesić, V. Ćorluka, Z. Valter
{"title":"Analysis of some parameters influencing moisture quantity measurements in wheat with NIR technique","authors":"M. Mesić, V. Ćorluka, Z. Valter","doi":"10.1109/ICECOM.2005.204959","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.204959","url":null,"abstract":"Water has an absorption band of four wavelengths, namely 1.2, 1.45, 1.94, and 2.94 micrometers, in the near-infrared light range. When a sample is irradiated with light of the above wavelengths, this sample will absorb light in accordance with its moisture content. As moisture content of wheat increased, reflectance from the wheat sample decreased, which indicates that water is a strong light absorber than a sandy wheat sample. When light hits a sample, several interactions can occur: specular reflectance, diffuse reflectance, absorption, transmittance, refraction and scattering. In this paper we try to find out influence of several interactions on accurate measurement for moisture wheat","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129331916","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: 8
Radiation Pattern of Arrays Mounted on Conical Structures 锥形结构阵列的辐射方向图
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.204947
K. Zmak, Z. Šipuš
{"title":"Radiation Pattern of Arrays Mounted on Conical Structures","authors":"K. Zmak, Z. Šipuš","doi":"10.1109/ICECOM.2005.204947","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.204947","url":null,"abstract":"The paper discusses the method for determining radiation pattern of an array mounted on a conical structure. Two types of antenna elements are considered: waveguide openings and microstrip patch antennas. The analysis method is based on the modal representation of the EM field, i.e. the solution procedure takes advantage of representing the fields as a sum of spherical harmonics with unknown amplitudes. By introducing normalized associate Legendre functions, together with pre-calculation of terms that depend only on conical geometry, an accurate and efficient program has been developed. A comparison was made between the calculated radiation pattern and the measurements of different waveguide and patch array configurations. All the considered results showed high accuracy of the developed method","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130530589","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
Binaural hearing computer models in multisource environments 多源环境下的双耳听力计算机模型
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.205016
B. Ivančević, K. Jambrošić, A. Petošić
{"title":"Binaural hearing computer models in multisource environments","authors":"B. Ivančević, K. Jambrošić, A. Petošić","doi":"10.1109/ICECOM.2005.205016","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.205016","url":null,"abstract":"Computer models of the binaural hearing mechanism are constantly developed and improved in order to simulate the hearing process as good as possible. This is necessary because of increasing need to localize and hear a certain speaker among others, simultaneously speaking sound sources, especially in teleconferences or for hearing-impaired people. The basics of almost all computer models is the cross-correlation function of the binaural signal, adequate filtered and processed. The final goal is to filter out from the binaural signal a certain speaker without any noise or interference. This paper uses a complex short-time cross-correlation model to find its limitation in identifying the right number of sound sources in the frontal horizontal plane, as well as their position (azimuth). The tests were done using HRTF functions to simulate a virtual acoustic environment without reflections. The results were compared with tests made in real rooms using dummy head for binaural signal recording","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"T167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125495690","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
Permittivity Measurements on Human Skin in the Millimetre W ave Band 毫米波波段人体皮肤介电常数测量
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.205042
C. Alabaster
{"title":"Permittivity Measurements on Human Skin in the Millimetre W ave Band","authors":"C. Alabaster","doi":"10.1109/ICECOM.2005.205042","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.205042","url":null,"abstract":"The complex permittivity of a sample of human skin is measured across the band 57 to 100 GHz using a free space technique. This data is used to fit a single term Cole-Cole function. The measured data is used in conjunction with a thermal model to determine the temperature rise on the skin surface exposed to millimetre wave signals of 100 Watts/m2 . This indicates a maximum temperature increase of 0.25degC from a 30 second exposure","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134336270","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: 4
Multiband Behavior of the Rectangular Microstrip Patch Antenna Modified by T-notch Perturbation Elements t -缺口微扰元件对矩形微带贴片天线多波段特性的影响
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.204948
M. Polivka
{"title":"Multiband Behavior of the Rectangular Microstrip Patch Antenna Modified by T-notch Perturbation Elements","authors":"M. Polivka","doi":"10.1109/ICECOM.2005.204948","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.204948","url":null,"abstract":"Multiband behaviour of the rectangular linearly polarized broadside radiated microstrip patch antenna (MPA) modified by one and two stage T-notch shaped perturbation elements has been studied with the help of planar simulator IESD. Explanation of physical multiband behaviour providing broadside radiation of MPA is done via description of surface current distribution at selected resonance frequencies. Properties of both radiators are discussed. Similarity of 2-stage T-notch perturbation element modification approach of MPA with fractal antenna concept is mentioned","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133398879","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: 10
Quality measuring methods of coded speech in mobile radiocommunication systems 移动无线电通信系统中编码语音的质量测量方法
2005 18th International Conference on Applied Electromagnetics and Communications Pub Date : 1900-01-01 DOI: 10.1109/ICECOM.2005.204927
D. Milković, E. Zentner
{"title":"Quality measuring methods of coded speech in mobile radiocommunication systems","authors":"D. Milković, E. Zentner","doi":"10.1109/ICECOM.2005.204927","DOIUrl":"https://doi.org/10.1109/ICECOM.2005.204927","url":null,"abstract":"This paper highlights the problem of quality estimation of speech signal transformed into digital form and the problem of impairments introduced by transmission system. These issues could be analyzed by using adequate quality measuring methods. Quality measuring methods have been classified according to their main characteristics and application field. This paper introduces most commonly used subjective and objective measuring methods of speech quality","PeriodicalId":102260,"journal":{"name":"2005 18th International Conference on Applied Electromagnetics and Communications","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127899375","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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