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2007 IEEE Applied Electromagnetics Conference (AEMC)最新文献

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A compact dualband planar antenna for IMT-2000 and WLAN applications 用于IMT-2000和WLAN应用的紧凑型双频平面天线
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638012
G. Augustin, V. Sarin, M. S. Nishamol, P. Mohanan, C. Aanandan, K. Vasudevan
{"title":"A compact dualband planar antenna for IMT-2000 and WLAN applications","authors":"G. Augustin, V. Sarin, M. S. Nishamol, P. Mohanan, C. Aanandan, K. Vasudevan","doi":"10.1109/AEMC.2007.4638012","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638012","url":null,"abstract":"A compact dualband planar antenna developed for IMT-2000 and WLAN applications is presented. The compact planar antenna consists of a flared monopole with an additional sleeve for dual band applications. The overall size of the antenna is 40 mm times 25 mm times 1.6 mm including the Finite Ground CPW feeding mechanism. The measured -10 dB band width for returnloss is from 1.91 - 2.34 GHz and 3.21 - 5.58 GHz covering IMT-2000 and WLAN bands. Simulation results along with measurements from the prototyped antenna are presented.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129194085","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
A MMIC control chipset for T/R modules - A SiP approach 用于T/R模块的MMIC控制芯片组-一种SiP方法
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638052
P.S. Vasu
{"title":"A MMIC control chipset for T/R modules - A SiP approach","authors":"P.S. Vasu","doi":"10.1109/AEMC.2007.4638052","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638052","url":null,"abstract":"This paper describes the design and development of S-band GaAs MMIC chipset consisting of a digital phase shifter, a digital attenuator, and a SPDT switch. The MMICs have been designed using a mature 0.5mum InGaAs pHEMT technology. To offer an attractive solution for phased array systems, the chipset has been integrated in a small form factor hermetically sealed metal package with plug and play features. The package design has been carried out in-house and reflects a System in Package (SiP) approach suited for high volume production. The integrated control component offers typically 9dB of insertion loss, a RMS phase error of 1.5 deg and a RMS attenuation error of 0.1 dB. The module features a high isolation of 55 dB between transmit and receive ports. The developed control module has been tested successfully in beam forming systems. The design of the constituent MMICs are presented in the initial sections followed by the description of the SiP module and the performance of the integrated entity.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129237266","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
A simple technique for the measurement of the permittivity of medium loss samples using cavity perturbation method 一种用腔微扰法测量介质损耗样品介电常数的简单方法
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638036
P. Banerjee, G. Ghosh, S. K. Biswas
{"title":"A simple technique for the measurement of the permittivity of medium loss samples using cavity perturbation method","authors":"P. Banerjee, G. Ghosh, S. K. Biswas","doi":"10.1109/AEMC.2007.4638036","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638036","url":null,"abstract":"The cavity perturbation method is widely used in the study of electromagnetic properties of dielectric materials at X-band frequencies. It works well for the measurement of low-loss and medium loss materials. In this paper an easy and reliable method is discussed for the accurate determination of the dielectric constant of medium loss samples such as Teflon and Perspex.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127812332","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
Monte Carlo integration Technique in Method of Moments solution of Integral equation 积分方程矩量解法中的蒙特卡罗积分技术
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638025
M. Mishra, N. Gupta
{"title":"Monte Carlo integration Technique in Method of Moments solution of Integral equation","authors":"M. Mishra, N. Gupta","doi":"10.1109/AEMC.2007.4638025","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638025","url":null,"abstract":"A new integration technique based on use of Monte Carlo integration is proposed for Method of Moments solution of Integral equation. As an example numerical analysis is carried out for the solution of the integral equation for unknown charge distribution on metallic structures. This employs a new set of entire domain basis functions. It is observed that the proposed method is not only capable of dealing with the problem of singularity efficiently but also provides accurate and fast computation of the unknown charge distribution on the surface of the metallic structures.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117351395","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: 7
Sequentially rotated microstrip array antenna at X-band for spacecraft 航天器x波段顺序旋转微带阵列天线
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638008
V.S. Kumar, V. Srinivasan, V. Lakshmeesha, S. Pal
{"title":"Sequentially rotated microstrip array antenna at X-band for spacecraft","authors":"V.S. Kumar, V. Srinivasan, V. Lakshmeesha, S. Pal","doi":"10.1109/AEMC.2007.4638008","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638008","url":null,"abstract":"This paper describes design, development and test results of a broadband, light weight circularly polarized microstrip array antenna. Sequential rotation technique has been applied on the array to obtain broad bandwidth in return loss and axial ratio performance. Circularly polarized truncated corner square microstrip patch is selected as a basic radiating element in this 64 element array. The antenna array has been developed for data transmission application from Low Earth Orbiting spacecraft to the ground station. Microstrip patches and feeding network have been designed on a single microwave substrate to obtain light weight antenna. Microstrip patch, feed network, and the complete array have been analyzed on Ansoft Ensemble software. Developed array exhibits good radiation patterns, axial ratio, and return loss over required band of frequencies (8.0 - 8.4 GHz). After successfully completing all space qualification process, the array has flown in Cartosat-2 spacecraft (Indian Remote Sensing Satellite). The on-orbit performance of the array is satisfactory and matching with the ground test values.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115799264","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
Design of left-handed metamaterials using hexagonal split ring resonator at S-band frequencies s波段六角形分裂环谐振器设计左手超材料
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638037
K. Chandrasekhar, D. Mishra, D. R. Poddar, R. K. Mishra
{"title":"Design of left-handed metamaterials using hexagonal split ring resonator at S-band frequencies","authors":"K. Chandrasekhar, D. Mishra, D. R. Poddar, R. K. Mishra","doi":"10.1109/AEMC.2007.4638037","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638037","url":null,"abstract":"This paper proposes a new structure for left handed metamaterials by using hexagonal split ring resonators (HGSRR) and thin wires (TW) at S-band. The effect of geometrical parameters like split width, number of splits of HGSRR on magnetic resonance frequency behaviour is investigated. It is observed that there is an increase in the resonant frequency of SRR by increasing the number of splits. The left handed behaviour of composite structure (HGSRR+TW) is also verified with graphical simulated results and by numerical retrieval of parameters.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127074355","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
Optimization of a Sierpinski Carpet Pre-Fractal planar monopole antenna using Real Coded Genetic Algorithm for wideband application 基于实数编码遗传算法的Sierpinski地毯预分形平面单极天线宽带优化
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638018
R. Ghatak, R. K. Mishra, D. Poddar
{"title":"Optimization of a Sierpinski Carpet Pre-Fractal planar monopole antenna using Real Coded Genetic Algorithm for wideband application","authors":"R. Ghatak, R. K. Mishra, D. Poddar","doi":"10.1109/AEMC.2007.4638018","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638018","url":null,"abstract":"A Sierpinski Carpet Pre-Fractal planar monopole antenna with coplanar waveguide feed is optimized to obtain wide impedance bandwidth of 73% that extends from 4.9 GHz to 10.5GHz. Real Coded Genetic Algorithm involving Wrightpsilas heuristic crossover in conjunction with non-uniform mutation aids the optimization process. The effectiveness of the operators used in implementing the algorithm is discussed and outputs of five different runs are summarized. The radiation pattern and gain of around 4.25 dBi suggests that it can be used for wireless communication applications.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"88 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125721241","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
Design of broad band dual frequency right triangular microstrip antenna with slits 带狭缝的宽带双频右三角形微带天线的设计
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638011
V. Sharma, D. Saxena, K. Sharma
{"title":"Design of broad band dual frequency right triangular microstrip antenna with slits","authors":"V. Sharma, D. Saxena, K. Sharma","doi":"10.1109/AEMC.2007.4638011","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638011","url":null,"abstract":"The simulation results of right triangular microstrip antenna (RTMA) with and without slits are reported in this paper. The structure has three layered structure in between conducting patch and the ground plane. It is found that antenna without slits but having an air gap of 1mm between the dielectric layers, resonates at a single frequency but with much improved bandwidth (32.8%). On applying two parallel slits in this patch geometry, antenna not only resonates at two different frequencies but impedance bandwidth (VSWR 2:1) up to 33.03% and directivity up to 7.52 dBi may be achieved with it.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126207292","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
Emission characteristics of a line source covered by an electromagnetic crystal embedded in a magnetized ferrite slab 嵌入磁化铁氧体板的电磁晶体覆盖线源的发射特性
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638030
H. Jia, K. Yasumoto, B. Gupta
{"title":"Emission characteristics of a line source covered by an electromagnetic crystal embedded in a magnetized ferrite slab","authors":"H. Jia, K. Yasumoto, B. Gupta","doi":"10.1109/AEMC.2007.4638030","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638030","url":null,"abstract":"A novel formulation of emission from a line source covered by an electromagnetic crystal embedded in a magnetized ferrite slab with a perfectly conductive reflection-plate is described. The method employs the spectral domain approach. The spectral response of electromagnetic crystal embedded in a magnetized ferrite slab is calculated using the lattice sums, the T-matrix of a circular cylinder in magnetized ferrite medium, and the generalized reflection and transmission matrices. The line source is transformed into an infinite periodic array of linearly phased dipole in the spectral domain. The scattered fields including near fields and far-zone fields are exactly expressed by an infinite integral. The far-zone fields can be approached by a method of steepest descent without performing this integration. The radiation patterns of a line current source covered by an electromagnetic crystal embedded in a magnetized ferrite slab have been discussed in several different cases.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134128792","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
Applications of a phased array with switched time-delay units 具有切换时延单元的相控阵的应用
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638005
Q. M. Alfred, N. Chopra, T. Chakravarty, G. Singh, S. K. Sanyal
{"title":"Applications of a phased array with switched time-delay units","authors":"Q. M. Alfred, N. Chopra, T. Chakravarty, G. Singh, S. K. Sanyal","doi":"10.1109/AEMC.2007.4638005","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638005","url":null,"abstract":"Authors have in previous publications demonstrated the generation of SUM and DIFFERENCE patterns in a programmable phased array consisting of time-delay units. In this paper a few applications of such programmable phased array are highlighted. Delay-line cancellation method is revisited and it is shown that blind speed can be eliminated. Similarly some adaptive beam formation and interference rejection techniques are presented.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"243 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113999812","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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