Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297110
K. Goto, T. Santikul, R. Asai, N. Sumikawa
By extending a frequency domain (FD) uniform asymptotic solution (FD-UAS), we derive a time-domain (TD) asymptotic-numerical solution (TD-ANS) for a transient scattered electric field when a modulated ultra-wideband (UWB) pulse wave excited by an electric line source is incident on a coated conducting cylinder covered with a thin lossy dielectric material. The TD-ANS is represented by a combination of the transient scattered electric field elements which consist of a geometric optical ray (DGO), a reflected GO, an extended uniform geometrical theory of diffraction (extended UTD) for a DGO and a pseudo surface diffracted ray (pseudo SD), a modified UTD for SD series, and a lowest order SD. The validity and computation rate of the TD-ANS proposed here are confirmed by comparing with a reference solution.
{"title":"Study on transient scattered electric field from a coated conducting cylinder covered with a thin lossy dielectric material excited by UWB pulse wave","authors":"K. Goto, T. Santikul, R. Asai, N. Sumikawa","doi":"10.1109/ICEAA.2015.7297110","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297110","url":null,"abstract":"By extending a frequency domain (FD) uniform asymptotic solution (FD-UAS), we derive a time-domain (TD) asymptotic-numerical solution (TD-ANS) for a transient scattered electric field when a modulated ultra-wideband (UWB) pulse wave excited by an electric line source is incident on a coated conducting cylinder covered with a thin lossy dielectric material. The TD-ANS is represented by a combination of the transient scattered electric field elements which consist of a geometric optical ray (DGO), a reflected GO, an extended uniform geometrical theory of diffraction (extended UTD) for a DGO and a pseudo surface diffracted ray (pseudo SD), a modified UTD for SD series, and a lowest order SD. The validity and computation rate of the TD-ANS proposed here are confirmed by comparing with a reference solution.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131290973","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297383
L. Arnaut
Traditionally, the phase of an ideal complex circular random electromagnetic fields is modelled by a uniform distribution. We show that the phase of the Cartesian component of a more general complex elliptic random field exhibits a distribution that depends on the I/Q noncircularity coefficient and the I/Q correlation coefficient. Theoretical distributions are derived and validated experimentally, based on measurements in a mode-tuned reverberation chamber using a vector network analyzer.
{"title":"Characterization of phase in vector measurements of stochastic fields","authors":"L. Arnaut","doi":"10.1109/ICEAA.2015.7297383","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297383","url":null,"abstract":"Traditionally, the phase of an ideal complex circular random electromagnetic fields is modelled by a uniform distribution. We show that the phase of the Cartesian component of a more general complex elliptic random field exhibits a distribution that depends on the I/Q noncircularity coefficient and the I/Q correlation coefficient. Theoretical distributions are derived and validated experimentally, based on measurements in a mode-tuned reverberation chamber using a vector network analyzer.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126484007","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297406
P. Galizia, I. Ciuchi, M. Anbinderis, R. Grigalaitis, C. Galassi
New magneto-dielectric cobalt ferrite (CFO)- titania (TO) ceramic in situ composites were prepared by reactive sintering. Magnetic permeability was investigated and correlated to the microstructure of the sintered ceramic composite bodies. We have obtained highly densified ceramic composites with CFO dispersed in two different dielectric matrices. The formation of a new ternary compound Fe2CoTi3O10 (FCTO) or a mixture of CoTiO3 (CTO) and Fe2O3 (FO) as dielectric phases could be produced by varying the molar ratio of the TO and CFO starting mixture.
{"title":"Titania-cobalt ferrite ceramic composites for high frequency magnetic applications","authors":"P. Galizia, I. Ciuchi, M. Anbinderis, R. Grigalaitis, C. Galassi","doi":"10.1109/ICEAA.2015.7297406","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297406","url":null,"abstract":"New magneto-dielectric cobalt ferrite (CFO)- titania (TO) ceramic in situ composites were prepared by reactive sintering. Magnetic permeability was investigated and correlated to the microstructure of the sintered ceramic composite bodies. We have obtained highly densified ceramic composites with CFO dispersed in two different dielectric matrices. The formation of a new ternary compound Fe<sub>2</sub>CoTi<sub>3</sub>O<sub>10</sub> (FCTO) or a mixture of CoTiO<sub>3</sub> (CTO) and Fe<sub>2</sub>O<sub>3</sub> (FO) as dielectric phases could be produced by varying the molar ratio of the TO and CFO starting mixture.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131877523","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297141
M. W. A. Khan, M. Behfar, T. Bjorninen, L. Sydanheimo, L. Ukkonen
In this paper we study the effect of magnetic core in both the implant and the external reader antenna and higher operational frequency of the implant for wireless passive Intracranial Pressure Monitoring (ICP). Implant and external reader antenna are inductively coupled. ICP can be monitored through the change of implant resonance frequency or external reader antenna input impedance phase dip. We demonstrate that improvement in the sensitivity of ICP monitoring through change of implant resonance frequency can be done by resonating implant at higher frequency. Moreover we perform measurement in biological environment by placing pig skin of 5 mm ± 1 mm between implant and external reader antenna.
{"title":"Effect of magnetic core and higher operational frequency on sensitivity in frequency shift detection in wireless passive minimally invasive Intracranial Pressure Monitoring","authors":"M. W. A. Khan, M. Behfar, T. Bjorninen, L. Sydanheimo, L. Ukkonen","doi":"10.1109/ICEAA.2015.7297141","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297141","url":null,"abstract":"In this paper we study the effect of magnetic core in both the implant and the external reader antenna and higher operational frequency of the implant for wireless passive Intracranial Pressure Monitoring (ICP). Implant and external reader antenna are inductively coupled. ICP can be monitored through the change of implant resonance frequency or external reader antenna input impedance phase dip. We demonstrate that improvement in the sensitivity of ICP monitoring through change of implant resonance frequency can be done by resonating implant at higher frequency. Moreover we perform measurement in biological environment by placing pig skin of 5 mm ± 1 mm between implant and external reader antenna.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116568049","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297206
F. Ciaramaglia, A. Dell’Aversano, G. Leone, W. Mellano, R. Pierri, R. Solimene
In this paper an innovative procedure for the localization and reconstruction of objects composed of elementary shapes is described. Sparse backscattered multifrequency field data are assumed to be known. The strategy is based on two steps in order to decrease the computational costs and to allow the use of few measurement points (with respect of Number of Degrees of Freedom). At first an Interferometric-Migration (IM) strategy is introduced with the purpose of reducing the dimension of the solution space. The second step is founded on the assumption that the elementary shapes are known and their geometrical features can characterized by a small amount of parameters. Then an Interferometric-MUSIC (I-MUSIC) algorithm is applied by combining results at single frequency. The overall approach is numerically tested in a 2D geometry for electrically large objects and has been proved robust against uncertainties on data.
本文提出了一种新颖的由基本形状组成的物体的定位与重建方法。假设稀疏后向散射多频场数据是已知的。该策略基于两个步骤，以减少计算成本，并允许使用较少的测量点(相对于自由度的数量)。首先引入了一种干涉偏移策略，目的是降低解空间的维数。第二步是建立在假设基本形状是已知的，它们的几何特征可以用少量的参数来表征。在此基础上，结合单频测量结果，采用干涉- music (I-MUSIC)算法。总体方法在二维几何图形中对电大物体进行了数值测试，并证明了对数据不确定性的鲁棒性。
{"title":"A two step linear inversion strategy for imaging simple shapes","authors":"F. Ciaramaglia, A. Dell’Aversano, G. Leone, W. Mellano, R. Pierri, R. Solimene","doi":"10.1109/ICEAA.2015.7297206","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297206","url":null,"abstract":"In this paper an innovative procedure for the localization and reconstruction of objects composed of elementary shapes is described. Sparse backscattered multifrequency field data are assumed to be known. The strategy is based on two steps in order to decrease the computational costs and to allow the use of few measurement points (with respect of Number of Degrees of Freedom). At first an Interferometric-Migration (IM) strategy is introduced with the purpose of reducing the dimension of the solution space. The second step is founded on the assumption that the elementary shapes are known and their geometrical features can characterized by a small amount of parameters. Then an Interferometric-MUSIC (I-MUSIC) algorithm is applied by combining results at single frequency. The overall approach is numerically tested in a 2D geometry for electrically large objects and has been proved robust against uncertainties on data.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134201503","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297247
J. Mclean, H. Foltz, D. Gray, R. Sutton
The extra element theorem is applied to the optimal design of impedance loaded electrically-small antennas. The applicability of the extra element theorem includes active and non-Foster loading. A key component of the framework of the extra element theorem termed null-double injection is shown to provide a direct and quantitative determination of the efficacy of a particular loading point.
{"title":"The application of the extra element theorem to the optimal design of impedance-loaded, electrically-small antennas","authors":"J. Mclean, H. Foltz, D. Gray, R. Sutton","doi":"10.1109/ICEAA.2015.7297247","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297247","url":null,"abstract":"The extra element theorem is applied to the optimal design of impedance loaded electrically-small antennas. The applicability of the extra element theorem includes active and non-Foster loading. A key component of the framework of the extra element theorem termed null-double injection is shown to provide a direct and quantitative determination of the efficacy of a particular loading point.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"40 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134545243","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297398
C. Guiffaut, A. Reineix
This paper presents some recent developments on the thin oblique wire formalism in the FDTD method. This approach allows us to build various models of cables and to include lumped circuit elements while keeping the ability to freely place and incline cables in the FDTD grid. The industrial interest for this versatile approach to handle cables leads to develop MPI algorithm in order to solve EMC problem of aircraft.
{"title":"Modeling of different cables types and their combinations for lightning and HIRF EMC studies in the FDTD method.","authors":"C. Guiffaut, A. Reineix","doi":"10.1109/ICEAA.2015.7297398","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297398","url":null,"abstract":"This paper presents some recent developments on the thin oblique wire formalism in the FDTD method. This approach allows us to build various models of cables and to include lumped circuit elements while keeping the ability to freely place and incline cables in the FDTD grid. The industrial interest for this versatile approach to handle cables leads to develop MPI algorithm in order to solve EMC problem of aircraft.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134064973","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297218
J. Granados-Samaniego, J. M. Velázquez-Arcos, C. Vargas, F. Tavera R, R. H. Hernandez Lopez
Under the concept of the so called Resonant Technology, recently we had proposed a device that can transport a lot of different signals, all of them of similar frequencies although different recording time, packed around the resonant frequencies. With the aim to implement physically the device, we had developed an algorithm, which is inserted in a FPGA to build information packs and send it. Also, we analyze the Gap Waveguide Electromagnetic Packaging Technology, taking into account the signal integrity and the Electromagnetic Broadband Packaging Model.
{"title":"Resonant Technology and Electromagnetic Packaging","authors":"J. Granados-Samaniego, J. M. Velázquez-Arcos, C. Vargas, F. Tavera R, R. H. Hernandez Lopez","doi":"10.1109/ICEAA.2015.7297218","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297218","url":null,"abstract":"Under the concept of the so called Resonant Technology, recently we had proposed a device that can transport a lot of different signals, all of them of similar frequencies although different recording time, packed around the resonant frequencies. With the aim to implement physically the device, we had developed an algorithm, which is inserted in a FPGA to build information packs and send it. Also, we analyze the Gap Waveguide Electromagnetic Packaging Technology, taking into account the signal integrity and the Electromagnetic Broadband Packaging Model.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133468903","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297341
J. Heredia-Juesas, E. Gago-Ribas, P. Vidal-García
Signals and Systems Theory (SST) plays a fundamental role in the educational and professional background of electrical engineering as well as in many other scientific areas. Many authors present this theory following a scheme which is valid for the analysis of general problems but they avoid dealing with more general concepts, leaving out a wide range of problems. The final purpose is to develop a Generalized Signals and Systems Theory (GSST) which can include many different problems in a rigorous way. An important point related to this mathematical rigorousness is the relation between the ordinary functions and generalized functions in infinite dimensional signal spaces through the Rigged Hilbert Spaces (RHS), which is presented in this paper.
{"title":"Application of the Rigged Hilbert Spaces into the Generalized Signals & Systems Theory","authors":"J. Heredia-Juesas, E. Gago-Ribas, P. Vidal-García","doi":"10.1109/ICEAA.2015.7297341","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297341","url":null,"abstract":"Signals and Systems Theory (SST) plays a fundamental role in the educational and professional background of electrical engineering as well as in many other scientific areas. Many authors present this theory following a scheme which is valid for the analysis of general problems but they avoid dealing with more general concepts, leaving out a wide range of problems. The final purpose is to develop a Generalized Signals and Systems Theory (GSST) which can include many different problems in a rigorous way. An important point related to this mathematical rigorousness is the relation between the ordinary functions and generalized functions in infinite dimensional signal spaces through the Rigged Hilbert Spaces (RHS), which is presented in this paper.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116508594","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}
Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297401
A. De Sabata, L. Matekovits, O. Lipan
Designing periodic structures with novel properties related to propagation of electromagnetic waves presents interest for applications in antenna technology, dispersion engineering, filtering, signal integrity etc. We consider a periodic structure built in stripline technology and assess the effect of geometry modulation on the dispersion diagram, including newly introduced modes and electromagnetic band-gaps. We relate the dispersion diagrams of the modulated and unmodulated structures. Results present interest for applications in the above mentioned fields.
{"title":"Enrichment of EBG contents of periodic structures by geometry modulation","authors":"A. De Sabata, L. Matekovits, O. Lipan","doi":"10.1109/ICEAA.2015.7297401","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297401","url":null,"abstract":"Designing periodic structures with novel properties related to propagation of electromagnetic waves presents interest for applications in antenna technology, dispersion engineering, filtering, signal integrity etc. We consider a periodic structure built in stripline technology and assess the effect of geometry modulation on the dispersion diagram, including newly introduced modes and electromagnetic band-gaps. We relate the dispersion diagrams of the modulated and unmodulated structures. Results present interest for applications in the above mentioned fields.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114625449","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}
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