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Antennas for multi-system mobile terminals 多系统移动终端天线
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852184
P. Vainikainen, J. Villanen, J. Holopainen, O. Kivekäs, P. Suvikunnas, K. Sulonen
{"title":"Antennas for multi-system mobile terminals","authors":"P. Vainikainen, J. Villanen, J. Holopainen, O. Kivekäs, P. Suvikunnas, K. Sulonen","doi":"10.1109/ANTEM.2005.7852184","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852184","url":null,"abstract":"In this overview paper we have studied different options for implementing antennas in multi-system mobile terminals that are becoming more and more common. The presented recent results included broadband antenna elements with multi-frequency matching circuits and the use of tunable or selectable centre frequency. All the solutions are based on the idea of shifting complexity from the 3D antenna element structure to RF circuit structures. Due to the ongoing development or new improved RF technologies and components that enable adaptivity with low cost and high performance, this approach is obviously gaining more and more popularity.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115679742","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
Traveling electromagnetic waves on linear metallic nanosphere arrays 线性金属纳米球阵列上的行电磁波
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852169
R. Shore, A. Yaghjian
{"title":"Traveling electromagnetic waves on linear metallic nanosphere arrays","authors":"R. Shore, A. Yaghjian","doi":"10.1109/ANTEM.2005.7852169","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852169","url":null,"abstract":"In a recent report [1] we have employed the source scattering-matrix formulation [2] with vector spherical wave functions [3]–[4] to investigate traveling electromagnetic waves on infinite linear periodic arrays of lossless penetrable (magnetodielectric) spheres. It is assumed that either the spheres are sufficiently small that only the dipole scattered fields can be excited, or the frequency is such that all the scattered multipole fields are negligible except the dipole fields. Accordingly, the sphere scattering is treated using only electric and magnetic dipole vector spherical waves, the dipoles being orthogonal to each other and to the array axis. A summary of this work was presented at a recent conference [5]. Although our investigation was motivated in part by the recent theoretical demonstration by Holloway et al. [6] that a doubly negative medium can be formed by embedding an array of magnetodielectric spheres in a background matrix, the results are equally applicable to arrays of lossless “metallic” spheres, with negative relative permittivity and with relative permeability equal to one, excited by an electromagnetic field transverse to the array axis.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114144177","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 compact multi band PIFA for wireless LAN mobile terminals 一个紧凑的多频段PIFA无线局域网移动终端
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852129
P. Nepa, G. Manara, A. Serra, G. Nenna
{"title":"A compact multi band PIFA for wireless LAN mobile terminals","authors":"P. Nepa, G. Manara, A. Serra, G. Nenna","doi":"10.1109/ANTEM.2005.7852129","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852129","url":null,"abstract":"A novel compact planar inverted-F antenna (PIFA) for laptop computers is presented. The proposed antenna is a multi-band single-feed PIFA operating in the IEEE 802.11a (5150–5350 MHz, 5725–5825MHz), IEEE 802.11b,g (2400–2484 MHz) and HIPERLAN2 (5470–5725MHz) frequency bands. The broad impedance bandwidth is achieved by combining a trapezoidal feed plate with two different resonance paths in the radiating patch. The overall size of the antenna makes it suitable to be mounted on the border of the display of a laptop computer. Simulation results are compared with measurements performed on an antenna prototype.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115421218","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
Design and conception of a millimetric wireless data transmmitted system for medical indoor application 医用室内毫米无线数据传输系统的设计与构想
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852102
A. Konam, M. Himdi, A. Sharaiha, S. Crand
{"title":"Design and conception of a millimetric wireless data transmmitted system for medical indoor application","authors":"A. Konam, M. Himdi, A. Sharaiha, S. Crand","doi":"10.1109/ANTEM.2005.7852102","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852102","url":null,"abstract":"This letter presents the concept and design of a complete system of data transmission in medical indoor environnement. The system is built around a module of acquisition using analog to digital conversion and time domain multiple access. The 24 GHz carrier is generated by a 12 GHz local oscillator followed by a frequency multiplier associated with appropriate harmonic filter. The design an concept of the transmitter and receiver antennas are done and the results are presented.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114778158","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
Bandwidth improvement of parasitic coupled patch antenna with Genetic Algorithm 用遗传算法改进寄生耦合贴片天线的带宽
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852153
A. Sabouni, M. S. Abrishamian, S. Noghanian, M. M. Zahedi
{"title":"Bandwidth improvement of parasitic coupled patch antenna with Genetic Algorithm","authors":"A. Sabouni, M. S. Abrishamian, S. Noghanian, M. M. Zahedi","doi":"10.1109/ANTEM.2005.7852153","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852153","url":null,"abstract":"Patch antennas with parasitic subarrays are used to improve the bandwidth of the patch antennas. Parasitic subarrays are coupled to radiating edges, nonradiating edges or all four edges of the patch. These subarrays create new resonance frequencies which interfere with the main resonance frequency and improve the bandwidth. Gupta et al. [1] used segmentation method to optimize the gap dimensions and parasitic patch dimensions to obtain bandwidth as large as 10%. In this paper we set gap coupling and parasitic dimensions fixed and use genetic algorithm combined with FDD method for simulation and optimization of the problem. Our goal is to increase return loss bandwidth. Genetic Algorithm (GA) is performed on the parasitic subarrays with no change on the main patch. At each iteration of GA we remove some defined cells form the parasitic patches and simulate the structure to monitor bandwidth width enhancement, Such iteration is performed several times to obtain good bandwidth. Main patch is designed at 9 GHz, and parasitic patches have the same dimension as the main patch. Primary simulations have shown bandwidth improvement more than 10%.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125580822","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
Replicating sensor for transient antenna measurements 用于瞬态天线测量的复制传感器
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852190
A. Yarovoy
{"title":"Replicating sensor for transient antenna measurements","authors":"A. Yarovoy","doi":"10.1109/ANTEM.2005.7852190","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852190","url":null,"abstract":"Application of the shielded loop antenna as a replicating sensor for transient antenna measurements is discussed. Different sensor designs, measurements schemes and calibration curves are presented. It is shown that the shielded loop antenna is a simple (both in development and application) and reliable ultra-wideband sensor for antenna measurements, in particularly in the near field.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126807354","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
A new approach to enhance the bandwidth of a novel miniaturized fractal microstrip patch antenna 一种提高新型微型化分形微带贴片天线带宽的新方法
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852094
M. Jamshidifar, F. Arazm, C. Ghobadi, J. Nourinia
{"title":"A new approach to enhance the bandwidth of a novel miniaturized fractal microstrip patch antenna","authors":"M. Jamshidifar, F. Arazm, C. Ghobadi, J. Nourinia","doi":"10.1109/ANTEM.2005.7852094","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852094","url":null,"abstract":"A novel fractal shape is introduced as a miniaturized microstrip patch antenna. Also by applying a new feeding method, wide impedance bandwidth is achieved. Measured and simulated results are in good agreement and show 68% size reduction (compare to a square patch) and up to 27% impedance bandwidth.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128106692","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
60 GHz electromagnetic fields do not activate stress-sensitive gene expression 60 GHz的电磁场不会激活应激敏感基因的表达
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852193
M. Zhadobov, R. Sauleau, L. Le Coq, D. Thouroude, I. Orlov, D. Michel, Y. Le Dréan
{"title":"60 GHz electromagnetic fields do not activate stress-sensitive gene expression","authors":"M. Zhadobov, R. Sauleau, L. Le Coq, D. Thouroude, I. Orlov, D. Michel, Y. Le Dréan","doi":"10.1109/ANTEM.2005.7852193","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852193","url":null,"abstract":"The purpose of this study was to determine whether millimeter waves exposure at 60GHz, upcoming to use for indoor high rate communications in local area networks, could lead to a stress response in human brain cells. U-251 MG cell line was sham-exposed or exposed to low power density millimeter radiation for different duration, from 1h to 33h. Using the transfection technique, we analyzed the gene expression for reporter genes previously shown highly sensitive to many environmental insults. We have tested the influence of 60GHz radiations on 3 different gene expression systems, overlaying the main cellular response pathways to physical and chemical stresses. No statistically significant difference was detected in transcriptional activity of reporter genes after radiation exposure. These results suggest that radiation in the frequency range around 60GHz is not a stressor strong enough to modify the stress-sensitive gene expression.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126673398","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
Effects of the transmission channel on the LS-CMA based beamformer in mobile communications 移动通信中传输信道对基于LS-CMA的波束形成器的影响
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852031
B. Banitalebi, M. Kamarei, M. Karimi, G. Dadashzadeh
{"title":"Effects of the transmission channel on the LS-CMA based beamformer in mobile communications","authors":"B. Banitalebi, M. Kamarei, M. Karimi, G. Dadashzadeh","doi":"10.1109/ANTEM.2005.7852031","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852031","url":null,"abstract":"In mobile communications, transmission channel causes significant effects on the signal of mobile users received by the BTS. These changes can degrade the performance of the beamformer. In this paper, undesired effects of the transmission channel on the performance of the LS-CMA based beamformer are investigated both theoretically and through simulations. Investigations of this paper show that the effect of transmission channel on the beamformer performance depends on some parameters such as modulation technique used in the transmitter, mobile environment, and etc. But in general, phase error and angular spread have the worst effect on the beamformer performance.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121832939","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
MDS in the analysis of pre-fractal printed strip gratings MDS在预分形印刷条形光栅分析中的应用
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI: 10.1109/ANTEM.2005.7852022
A. Antonets
{"title":"MDS in the analysis of pre-fractal printed strip gratings","authors":"A. Antonets","doi":"10.1109/ANTEM.2005.7852022","DOIUrl":"https://doi.org/10.1109/ANTEM.2005.7852022","url":null,"abstract":"In this paper, we present new method for the modeling of printed strip gratings. Our general approach for finite perfectly electric conducting (PEC) strip gratings printed on a dielectric substrate with a PEC ground plane is based on the parametric representations of the integral and pseudo-differential operators and Method of Discrete Singularities (MDS). Diffraction problem is first reduced to hypersingular integral equation. Then this equation is solved using the MDS. Finite-order Cantorian set strip grating is investigated numerically. Some of obtained results are presented.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122787395","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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