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

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Wide band printed dipole design 宽带印刷偶极设计
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068528
J. Floc'h
{"title":"Wide band printed dipole design","authors":"J. Floc'h","doi":"10.1109/MMS.2011.6068528","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068528","url":null,"abstract":"We describe the design of wide band printed dipole. We obtain with this technique more than 50% bandwidth around the frequency of 2.5 GHz. We obtain very flat gain (around 5dBi) over the entire bandwidth. This antenna is low profile, low cost and with a very simple feeding.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"18 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":"133364475","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: 5
Phased uniform linear antenna array synthesis using genetic algorithm 基于遗传算法的相控均匀线性天线阵列合成
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068531
M. A. El cafsi, R. Ghayoula, H. Trabelsi, A. Gharsallah
{"title":"Phased uniform linear antenna array synthesis using genetic algorithm","authors":"M. A. El cafsi, R. Ghayoula, H. Trabelsi, A. Gharsallah","doi":"10.1109/MMS.2011.6068531","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068531","url":null,"abstract":"This paper describes a new method for adaptive beamforming for a phased antenna arrays using genetic algorithm. The algorithm can determinate the values of phase excitation for each antenna to steer the main beam in specific direction. Various results are presented with −10 dB side lobes level. To improve these results, a Chebyshev model was proposed in order to decrease the level of side lobes which consists in amplitude synthesis.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"18 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":"133954758","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
High gain printed dipole array with reflectors and directors 带有反射器和定向器的高增益印刷偶极子阵列
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068529
G. Lerideau, J. Floc'h, A. El Sayed Ahmad, A. Tarot, R. Loison, Sophia Thizon, Samuel Pied
{"title":"High gain printed dipole array with reflectors and directors","authors":"G. Lerideau, J. Floc'h, A. El Sayed Ahmad, A. Tarot, R. Loison, Sophia Thizon, Samuel Pied","doi":"10.1109/MMS.2011.6068529","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068529","url":null,"abstract":"Since many years, a lot of studies has been lead to developed reconfigurable antennas. Phase scanning, beam steering or frequency tuning are, notably, the main interests of the antennists. Therefore planar array antennas has been developed, in order to control all of those parameters (examples in [1],[2],[3],[6]). In our letter, the simplicity of the design of a directive antenna with only printed dipoles is shown. We extend a technique used in [4], which aims to get a high gain, a high sidelobe level rejection and a low level of back radiations. In the first part of this paper, we present the basic printed structure (compouned of one radiating element, one reflector and one director). In the second part, we present a 8×1 array of the basic structure, with a balanced power distribution in order to increase the gain and decrease the side lobe level. We optimize those antennas with the software CST Microwave Studio.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"43 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":"124467616","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
Uniform circular phased arrays synthesis using SQP algorithm 基于SQP算法的均匀圆形相控阵合成
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068558
A. Hammami, R. Ghayoula, A. Gharsallah
{"title":"Uniform circular phased arrays synthesis using SQP algorithm","authors":"A. Hammami, R. Ghayoula, A. Gharsallah","doi":"10.1109/MMS.2011.6068558","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068558","url":null,"abstract":"In this paper, a uniform circular array antenna with synthesis technique based on Sequential Quadratic Programming (SQP) algorithm is discussed. The SQP algorithm is a robust method for the optimization with inequality constraints. SQP algorithm has been used for steering the main lobe and reducing the side lobe level for the radiation pattern by controlling only the amplitude of the array elements. In order to illustrate the performance of the proposed method, several examples of uniform circular antennas array patterns are performed.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"1 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":"129143745","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: 5
Novel technique for improvement of transmission line matrix method algorithm frequency response 改进传输线矩阵法频率响应算法的新技术
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068533
M. Rajabi, N. Komjani, V. Nayyeri
{"title":"Novel technique for improvement of transmission line matrix method algorithm frequency response","authors":"M. Rajabi, N. Komjani, V. Nayyeri","doi":"10.1109/MMS.2011.6068533","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068533","url":null,"abstract":"In this paper, an accurate and numerically robust singularity correction technique for transmission line matrix method (TLM) algorithm is proposed. The impedance of the adjacent cells to the singularity is corrected by a scalar correction factor, which amounts to a quasi-static correction of the electric and magnetic energy stored in the TLM cells at the singularity. The effectiveness of this method in accurate modeling of structures with metallic strips (sharp edges) been clearly validated against published measurement and common TLM simulation data.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"30 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":"114204038","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
Full-wave modal analysis of asymmetric coupled lines using the quasi-symmetric approach 非对称耦合线的准对称全波模态分析
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068548
A. Khodja, R. Touhami, M. Yagoub, H. Baudrand
{"title":"Full-wave modal analysis of asymmetric coupled lines using the quasi-symmetric approach","authors":"A. Khodja, R. Touhami, M. Yagoub, H. Baudrand","doi":"10.1109/MMS.2011.6068548","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068548","url":null,"abstract":"This paper presents the investigation of dispersion parameters for asymmetric coupled microstrip structures by using modal domain integral technique. The original aspect of this work is the introduce of the quasi-symmetric approach in order to leads by Galerkin's procedure to small-size dispersion matrix and thus reduces the numerical computational effort. For this purpose, a rigorous formulation was developed; trial functions of C and π modes were obtained from the quasi-symmetric case, and thus proposed for the asymmetric case. A comparative study of propagation characteristics with respect electrical and physical parameters demonstrated the limits of the quasi-symmetric model validity due to influence of shielding and metal strips widths difference. The validation of numerical results has been carried out by comparisons with previously accurate published data.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"50 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":"114840863","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 design of antenna array using left handed meta-material “LHM” based on circular Split Ring Resonator “SRR” 基于圆形劈裂环谐振器SRR的左手超材料“LHM”天线阵列新设计
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068527
M. Labidi, J. Belhadj Tahar, F. Choubani
{"title":"New design of antenna array using left handed meta-material “LHM” based on circular Split Ring Resonator “SRR”","authors":"M. Labidi, J. Belhadj Tahar, F. Choubani","doi":"10.1109/MMS.2011.6068527","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068527","url":null,"abstract":"In the first part of this paper, we explain the basic concept of left-handed material and we will look at the history of implementing LHM materials at high frequency. In this part we have investigated the characterization process of metamaterials, the effective dielectric and magnetic properties are retrieved from the scattering parameters. Moreover, we provide a detailed study about the effective parameters such as the refractive index, permeability, permittivity and the group delay. For this purpose we have designed special LHMs that resonate in X-band frequency which is around 8GHz–12GHz. In the second part of this paper, a new topology for designing a circularly polarized 2 × 4 linear antenna array composed of circular Split Ring Resonator SRR for X-band is discussed. The design of metamaterial antenna array based Circular Split Ring Resonator operating at about 10.75 GHz and present a gain of 5.2 dB and the aperture at −3dB is 58°.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"33 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":"125246772","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
Energy efficient cross-layer architecture for wireless sensor networks 无线传感器网络的高能效跨层架构
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068544
H. Idoudi, Nahla Hmili, Leila Azouz Saidane
{"title":"Energy efficient cross-layer architecture for wireless sensor networks","authors":"H. Idoudi, Nahla Hmili, Leila Azouz Saidane","doi":"10.1109/MMS.2011.6068544","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068544","url":null,"abstract":"In this paper, we introduce a new asynchronous power saving architecture that provides an adaptive duty cycle, depending on the network load with no overhead. Our proposition is based on the combination of two novel protocols: a load balancing MAC protocol and a very simple, yet efficient, forwarding function. They achieve power saving by balancing nodes activity and eliminating any routing overhead while insuring fault tolerant communications. Preliminary simulation results demonstrate the effectiveness of our proposed approach in terms of mean residual energy and energy distribution compared to BMAC and Greedy geographic routing.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"1 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":"133846336","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
Chromatic dispersion of microstructured fiber using neural network 基于神经网络的微结构纤维色散研究
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068552
A. Ouchar, A. Sonne, R. Aksas
{"title":"Chromatic dispersion of microstructured fiber using neural network","authors":"A. Ouchar, A. Sonne, R. Aksas","doi":"10.1109/MMS.2011.6068552","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068552","url":null,"abstract":"In this paper a neural Network model of chromatic dispersion of a photonic crystal fiber with triangle-lattice and hexagonal geometry has been designed trained and simulated. The training data are carried out using the multipole method. The three layer's hexagonal PCFs studied in this paper have a silica core, obtained by introducing a defect. To train the proposed neural network we have used four structures with the same period different diameter and in each computation we have derived the refractive index of PCF. The obtained mean square error reaches 1e-5 for 60.000 epochs and the proposed neural network permit to the designer to compute directly the refractive index and the chromatic dispersion without return back to the multipole method.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"21 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":"130995026","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
Dual band low-profile zeroth-order metamaterial antenna 双波段低轮廓零阶超材料天线
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068543
D. Nabil, H. Mohamed, Choubani Fethi, D. Jacques
{"title":"Dual band low-profile zeroth-order metamaterial antenna","authors":"D. Nabil, H. Mohamed, Choubani Fethi, D. Jacques","doi":"10.1109/MMS.2011.6068543","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068543","url":null,"abstract":"In this paper; we study a dual band low-profile small antenna resonating at 434 MHz and 868 MHz. The radiation mechanism of the antenna is due to the radiating posts which are connected in series to an inductor at each edge of a transmission line in between. Calibrating the flowing currents in the vias by tuning the inductances values, radiated fields are constructive in the far field region. Full-wave simulations were carried in order to study the properties of the antenna at two different frequencies. The antenna offers a fractional bandwidth of 0.73% and 1.95%, a radiation efficiency of 35.74% and 74.87% at 434 MHz and 868 MHz respectively, also a monopole-like radiation pattern is observed at each band.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"189 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":"116332483","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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