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2011 11th Mediterranean Microwave Symposium (MMS)最新文献

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Steerable and compact antenna using a cavity-based metamaterial 使用基于空腔的超材料的可操纵和紧凑的天线
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068569
Akram Boubakri, Jamel bel Hadj Tahar
{"title":"Steerable and compact antenna using a cavity-based metamaterial","authors":"Akram Boubakri, Jamel bel Hadj Tahar","doi":"10.1109/MMS.2011.6068569","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068569","url":null,"abstract":"During recent years partially reflective surface's based on artificial conductor are used to create the design of directive and compact cavity antenna. In this paper, we study a design of a locally phase-varying metamaterial working near 10 GHz. It is made from a capacitive and an inductive grid. The phase-varying behavior is obtained with a regular increment of the gap between each unit cell of the capacitive grid in E field direction. This composite metamaterial is used as a partially reflecting surface in a resonant Fabry-Perot type cavity together with a patch antenna to constitute a compact (λ/28) steerable directive printed antenna. An 18° deflection of the antenna beam clockwise and 7° anticlockwise in H plane are obtained and a gain improvement is realized.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132052755","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
Alamouti scheme's generalization Alamouti方案的泛化
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068554
N. Amdouni, Ons Ben Rhouma, A. Bouallègue
{"title":"Alamouti scheme's generalization","authors":"N. Amdouni, Ons Ben Rhouma, A. Bouallègue","doi":"10.1109/MMS.2011.6068554","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068554","url":null,"abstract":"The Orthogonal spacetime block code proposed by Alamouti [1], which is a promising scheme for information transmission over Rayleigh-fading channels using two transmit antennas due to its favorable characteristics of having full transmit diversity, full rate and a simple maximum-likelihood (ML) decoding algorithm, motivates searches for similar schemes using more than two transmit antennas. Many authors extended the theory of classical orthogonal designs to the theory of generalized, real, or complex orthogonal designs and then applied it to construct spacetime block codes (STBCs) with the maximum possible diversity order while having a simple decoding algorithm for any given number of transmit and receive antennas. These codes achieve the maximum possible transmission rate for any number of transmit antennas using any arbitrary real constellation such as PAM. Unfortunatly, for any arbitrary complex constellation such as PSK and QAM, spacetime block codes were penelized by a rate strictly inferior to one for transmission with more than two antennas. In this correspondence we study the Alamouti code and its generalization, for both real and complex constellations, for any number of transmit antennas.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128119719","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
Theoretical approach to study crosstalk between three conductor nonuniform transmission lines 三导体非均匀传输线串扰研究的理论方法
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068556
M. Kachout, Jamel bel Hadj Tahar, F. Choubani
{"title":"Theoretical approach to study crosstalk between three conductor nonuniform transmission lines","authors":"M. Kachout, Jamel bel Hadj Tahar, F. Choubani","doi":"10.1109/MMS.2011.6068556","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068556","url":null,"abstract":"In this paper Theoretical approach to study crosstalk between three conductor transmission lines is developed. Methods for prediction of crosstalk between microstrip transmission lines are reviewed. Equations are derived which can be solved to obtain formulas for the near-end and far-end crosstalk for nonuniform transmission lines.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126244582","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
Magnetic loop antenna for wireless capsule endoscopy inside the human body operating at 315 MHz: Near field behavior 315mhz工作频率的人体内无线胶囊内窥镜磁环天线:近场行为
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068534
Fatiha El hatmi, M. Grzeskowiak, T. Alvès, S. Protat, O. Picon
{"title":"Magnetic loop antenna for wireless capsule endoscopy inside the human body operating at 315 MHz: Near field behavior","authors":"Fatiha El hatmi, M. Grzeskowiak, T. Alvès, S. Protat, O. Picon","doi":"10.1109/MMS.2011.6068534","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068534","url":null,"abstract":"In ingestible systems, the antenna suffers from deterioration of performances due to surrounding dissipative tissues. A small circular magnetic loop antenna, whose diameter is equal to 1 cm and thickness is equal to 0.5 mm operating at the frequency of 315 MHz in the ISM band, is proposed to limit this degradation. The electric properties of the human body, having a high dielectric constant and low impedance, are considered to design and simulate the loop antenna. We found that the magnetic field is less attenuated than the electric field in the human body that improves the signal level received by near field magnetic coupling.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"133 25","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113940083","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
Materials characterization using a structure based on microstrip line 基于微带线结构的材料表征
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068580
Lamia Zarral, F. Ndagijimana
{"title":"Materials characterization using a structure based on microstrip line","authors":"Lamia Zarral, F. Ndagijimana","doi":"10.1109/MMS.2011.6068580","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068580","url":null,"abstract":"The considerable evolution of microelectronics has highlighted the need for new dielectric materials of high permittivity (high-k).","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114681078","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
An efficient analysis of microstrip trisection filters using an iterative method combined by approach Multi-scale 多尺度法结合迭代法对微带三分滤波器的有效分析
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068535
H. Megnafi, N. Boukli-Hacene, A. Benomar, H. Baudrand, N. Raveu
{"title":"An efficient analysis of microstrip trisection filters using an iterative method combined by approach Multi-scale","authors":"H. Megnafi, N. Boukli-Hacene, A. Benomar, H. Baudrand, N. Raveu","doi":"10.1109/MMS.2011.6068535","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068535","url":null,"abstract":"This paper presents an efficient execution of the Wave Concept Iterative Procedure algorithm (WCIP) combined with the Multi-scale approach's module (M.WCIP). This approach is introduced to solve the problem of the relationship between circuit complexity and computation time. Therefore, this work consists of a development of simulation software based on this combination for planar circuits very jagged structure's simulation. The two layouts of the micro-strip trisection filter's simulation are made. The first layout has a higher selectivity on the high side of the pass-band and the second has a higher selectivity but on the low side of the pass-band. The results obtained the WCIP and M.WCIP are analyzed and validated by comparison with results obtained by other researchers.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114467244","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
New methodology of conceiving stacked proximity feed antenna 叠置接近馈电天线设计的新方法
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068553
Mehdi Ali, A. Kachouri, M. Samet
{"title":"New methodology of conceiving stacked proximity feed antenna","authors":"Mehdi Ali, A. Kachouri, M. Samet","doi":"10.1109/MMS.2011.6068553","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068553","url":null,"abstract":"Proximity coupled microstrip antenna is a noncoplanar feed structure using at least two layers. Coupling between the patch and the microstrip feeding line is capacitive in nature. The coupling capacitor is in series with the R-C-L resonant circuit representing the patch. The capacitance is designed for impedance matching. The radiating patch being placed on the double layer gives a larger bandwidth.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121746598","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
Performance comparison of Differential Evolution, Genetic Algorithm and Particle Swarm Optimization in impedance matching of aperture coupled microstrip antennas 差分进化、遗传算法和粒子群算法在孔径耦合微带天线阻抗匹配中的性能比较
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068519
Arindam Deb, B. Gupta, J. S. Roy
{"title":"Performance comparison of Differential Evolution, Genetic Algorithm and Particle Swarm Optimization in impedance matching of aperture coupled microstrip antennas","authors":"Arindam Deb, B. Gupta, J. S. Roy","doi":"10.1109/MMS.2011.6068519","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068519","url":null,"abstract":"Microstrip antennas are most widely used nowadays for microwave applications because of their numerous advantages like small size and weight, conformability, compatibility with microwave integrated circuits etc. The aperture coupled microstrip line feeding technique has many advantages like availability of a large number of adjustable parameters in the form of aperture length, width and stub parameters. Design of aperture coupled microstrip antennas using a recently developed very fast optimization algorithm namely Differential Evolution [1] is proposed in this paper. The optimization algorithm is used to determine the dimensions as well as the transmission line feed positions for optimum matching over a given range of frequencies and substrate. For use of Differential Evolution in the optimal design of aperture coupled microstrip antennas, the fitness function is evaluated using the Method of Moments technique implemented through IE3D. In addition optimal design of the antenna using other conventional optimization techniques like real coded Genetic Algorithm and Particle Swarm Optimization are done and the results and performances are compared with those obtained by Differential Evolution (DE).","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116746735","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
Cylindrical dielectric resonator antenna for dual band application 双频应用的圆柱形介电谐振器天线
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068525
A. Benomar, Noureddine Boukli Hacene, H. Megnafi, Patrick Vaudon
{"title":"Cylindrical dielectric resonator antenna for dual band application","authors":"A. Benomar, Noureddine Boukli Hacene, H. Megnafi, Patrick Vaudon","doi":"10.1109/MMS.2011.6068525","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068525","url":null,"abstract":"A dual band antenna system is designed by embedded the cylindrical dielectric resonator (CDR). The first part display the characteristics of single CDR as return loss, bandwidth and radiation pattern, after, in the second part it observed that embedded the CDR by another cylindrical resonator leads a dual-frequencies behavior and achieves a dual band antenna, The proposed antenna is investigated using Finite Element Method (FEM). The results shows that at least 50 MHz of impedance bandwidth (S11 <; -10dB) at resonate frequency of 1.98 GHz, and the radiations patterns are remaining broadside using a 50 ohms coaxial probe placed in the edge of the host cylindrical; The antenna can covers a part of Ultra High Frequency (UHF).","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"73 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122301580","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
Omni-directional high reflectors using one-dimensional deformed quasi-periodic cantor band gap structure at ultra high frequency band 超高频全向高反射镜采用一维变形准周期康托带隙结构
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068551
N. Ben Ali, M. Kanzari
{"title":"Omni-directional high reflectors using one-dimensional deformed quasi-periodic cantor band gap structure at ultra high frequency band","authors":"N. Ben Ali, M. Kanzari","doi":"10.1109/MMS.2011.6068551","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068551","url":null,"abstract":"By using a theoretical model based on Transfer Matrix Method (TMM) for any incidence simulator and for both parallel (P) and serial (S) polarisation, we study the reflection spectra of one-dimensional (1D) deformed quasi-periodic Cantor structures, at ultra high frequency band. It is obtained a broad Omni-directional reflection band covering a great part of UHF band which contains the Global System for Mobile communication (GSM) bands. The propagation of electromagnetic waves is forbidden in this region for all incident angle and all polarisations. Deformation was introduced by applying a power law, so that the coordinates y of the deformed object was determined through the coordinates x of the Cantor stack in accordance with the following rule y=xk+1, where k: the coefficient defining the deformation degree.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121463910","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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