Pub Date : 2015-10-15DOI: 10.1109/ICEAA.2015.7297128
J. R. Montejo-Garai, Irene O. Saracho-Pantoja, C. Leal-Sevillano, J. Ruiz‐Cruz, J. Rebollar
This paper presents the application of the low cost additive manufacturing technique named fused filament fabrication (FFF) to implement waveguide devices. In addition to the reduced price, it also has the added benefit of rapid prototyping, allowing the designer to modify the geometry swiftly. Otherwise this kind of manufacture opens the way to experiment with shapes until now unachievable by traditional subtractive techniques. In order to demonstrate its feasibility, the experimental results of three filters with low-pass, high-pass, and band-pass responses respectively, designed in Ku band with usual specifications in satellite communication systems have been designed, printed, metallized and measured. In the conclusion, the advantages and limitations are highlighted, with special attention dedicated to the metallization process, since it is the bottleneck of the process.
{"title":"Design of microwave waveguide devices for space and ground application implemented by additive manufacturing","authors":"J. R. Montejo-Garai, Irene O. Saracho-Pantoja, C. Leal-Sevillano, J. Ruiz‐Cruz, J. Rebollar","doi":"10.1109/ICEAA.2015.7297128","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297128","url":null,"abstract":"This paper presents the application of the low cost additive manufacturing technique named fused filament fabrication (FFF) to implement waveguide devices. In addition to the reduced price, it also has the added benefit of rapid prototyping, allowing the designer to modify the geometry swiftly. Otherwise this kind of manufacture opens the way to experiment with shapes until now unachievable by traditional subtractive techniques. In order to demonstrate its feasibility, the experimental results of three filters with low-pass, high-pass, and band-pass responses respectively, designed in Ku band with usual specifications in satellite communication systems have been designed, printed, metallized and measured. In the conclusion, the advantages and limitations are highlighted, with special attention dedicated to the metallization process, since it is the bottleneck of the process.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"33 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":"115751427","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.2015.7297099
F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi
An effective technique to compensate known positioning errors in a nonredundant near field - far field (NF-FF) transformation with plane-polar scan, using an oblate ellipsoid to model the antenna under test, has been experimentally validated at the UNISA Antenna Characterization Lab. It employs the singular value decomposition method to retrieve the probe voltage samples at the points fixed by the nonredundant sampling representation from the acquired irregularly spaced ones. The NF data needed by the classical plane-rectangular NF-FF transformation are then efficiently evaluated by means of an optimal sampling interpolation expansion.
{"title":"Far field reconstruction from positioning errors affected plane-polar measurements: A SVD approach","authors":"F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi","doi":"10.1109/ICEAA.2015.7297099","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297099","url":null,"abstract":"An effective technique to compensate known positioning errors in a nonredundant near field - far field (NF-FF) transformation with plane-polar scan, using an oblate ellipsoid to model the antenna under test, has been experimentally validated at the UNISA Antenna Characterization Lab. It employs the singular value decomposition method to retrieve the probe voltage samples at the points fixed by the nonredundant sampling representation from the acquired irregularly spaced ones. The NF data needed by the classical plane-rectangular NF-FF transformation are then efficiently evaluated by means of an optimal sampling interpolation expansion.","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":"116957638","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.2015.7297194
A. Z. Papafragkakis, N. Lyras, C. Kourogiorgas, A. Panagopoulos
The present work illustrates the basic concepts and challenges involved in the implementation of a Software Defined Radio (SDR) receiver targeting ALPHASAT's Ka-band beacon; the receiver measures the beacon's power which can later be correlated with meteorological data in an effort to statistically describe the various propagation phenomena. This shall allow the development of more accurate propagation models that are required for the reliable design of high throughput satellite networks at Ka band and above.
{"title":"Propagation measurements campaign in Athens with ALPHASAT at Ka-band using Software Defined Radio technologies","authors":"A. Z. Papafragkakis, N. Lyras, C. Kourogiorgas, A. Panagopoulos","doi":"10.1109/ICEAA.2015.7297194","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297194","url":null,"abstract":"The present work illustrates the basic concepts and challenges involved in the implementation of a Software Defined Radio (SDR) receiver targeting ALPHASAT's Ka-band beacon; the receiver measures the beacon's power which can later be correlated with meteorological data in an effort to statistically describe the various propagation phenomena. This shall allow the development of more accurate propagation models that are required for the reliable design of high throughput satellite networks at Ka band and above.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"279 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":"123259280","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.2015.7297312
G. Csaba, J. Russer, W. Porod
We demonstrate that networks of coupled oscillators can approximately solve the Paraxial Helmholtz Equation (PHE), enabling the construction of special-purpose hardware. We argue that solutions of the PHE can be used for efficient non-Boolean computing hardware as well.
{"title":"A network approach to EM modeling based on arrays of coupled oscillators","authors":"G. Csaba, J. Russer, W. Porod","doi":"10.1109/ICEAA.2015.7297312","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297312","url":null,"abstract":"We demonstrate that networks of coupled oscillators can approximately solve the Paraxial Helmholtz Equation (PHE), enabling the construction of special-purpose hardware. We argue that solutions of the PHE can be used for efficient non-Boolean computing hardware as well.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"60 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":"126639549","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.2015.7297063
P. Besso
In the last 15 years the European Space Agency (ESA) has deployed three Deep Space stations that are located in New Norcia (Australia), Cebreros (Spain) and Malargue (Argentina). These ground stations are currently in use to support ESA Deep Space Missions and to provide cross-support to other Space Agencies. This paper presents the feed systems installed in ESA Deep Space Antennas and associated performance. In view of new missions currently in preparation, ESA Deep Space Antennas will undergo in the next years to major upgrades required to accommodate new frequency bands (26 GHz down-link and 34 GHz uplink) and higher transmitted power (up to 100 kW in X-Band) and to improve down-link performance. This paper presents the architecture currently under definition for the new generation of feed systems to be deployed in the network.
{"title":"Present and future feed systems for ESA Deep Space Antennas","authors":"P. Besso","doi":"10.1109/ICEAA.2015.7297063","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297063","url":null,"abstract":"In the last 15 years the European Space Agency (ESA) has deployed three Deep Space stations that are located in New Norcia (Australia), Cebreros (Spain) and Malargue (Argentina). These ground stations are currently in use to support ESA Deep Space Missions and to provide cross-support to other Space Agencies. This paper presents the feed systems installed in ESA Deep Space Antennas and associated performance. In view of new missions currently in preparation, ESA Deep Space Antennas will undergo in the next years to major upgrades required to accommodate new frequency bands (26 GHz down-link and 34 GHz uplink) and higher transmitted power (up to 100 kW in X-Band) and to improve down-link performance. This paper presents the architecture currently under definition for the new generation of feed systems to be deployed in the network.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"43 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":"115081686","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.2015.7297122
J. Bernard, N. Malléjac
We consider the electric field due to the coupling between two arbitrary scatterers A and A' in presence of an imperfectly conducting object. We then develop relations between the field due to the influence of A' on A and the one due to the influence of A on A', and original efficient expressions of them. As an example of application, we present a novel method which allows the numerical suppression of first order couplings between A' and A by a simple and efficient post-process.
{"title":"Theory of couplings in electromagnetism: Novel results and numerical removal of couplings","authors":"J. Bernard, N. Malléjac","doi":"10.1109/ICEAA.2015.7297122","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297122","url":null,"abstract":"We consider the electric field due to the coupling between two arbitrary scatterers A and A' in presence of an imperfectly conducting object. We then develop relations between the field due to the influence of A' on A and the one due to the influence of A on A', and original efficient expressions of them. As an example of application, we present a novel method which allows the numerical suppression of first order couplings between A' and A by a simple and efficient post-process.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"23 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":"115580004","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.2015.7297215
Fran Casino, P. López-Iturri, E. Aguirre, L. Azpilicueta, A. Solanas, F. Falcone
In this work, the analysis on the design and implementation of dense wireless sensor networks is presented, by performing deterministic wireless channel analysis, providing assessment on topological and morphological impact of complex urban environments in the operation of the employed wireless sensor networks, within WLAN/WPAN standards. The proposed methodology, combining initial radioplanning estimations aided with complete scenario description can provide a useful tool in the deployment of future massive wireless networks, providing optimized levels of service whilst minimizing energy consumption and overall interference levels.
{"title":"Dense wireless sensor network design for the implementation of Smart Health environments","authors":"Fran Casino, P. López-Iturri, E. Aguirre, L. Azpilicueta, A. Solanas, F. Falcone","doi":"10.1109/ICEAA.2015.7297215","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297215","url":null,"abstract":"In this work, the analysis on the design and implementation of dense wireless sensor networks is presented, by performing deterministic wireless channel analysis, providing assessment on topological and morphological impact of complex urban environments in the operation of the employed wireless sensor networks, within WLAN/WPAN standards. The proposed methodology, combining initial radioplanning estimations aided with complete scenario description can provide a useful tool in the deployment of future massive wireless networks, providing optimized levels of service whilst minimizing energy consumption and overall interference levels.","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":"116873704","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.2015.7297238
E. Barzegar, S. V. van Eijndhoven, M. V. van Beurden
Stacks of dielectric slabs serve as models of a large variety of engineering structures such as Bragg gratings and Vertical-Cavity Surface-Emitting lasers (VCSELs). Depending on the application, design features that describe the electromagnetic response of the structure are chosen. Subject of study in this paper is the effect of uncertainties in the material properties of the slabs. Design features are random variables and their mean and variance describe the effect of the uncertainties in a probabilistic way. In this paper, a strategy is presented to estimate these uncertainty characteristics. The strategy is illustrated for the application of VCSELs.
{"title":"A modeling approach to feature extraction for stacks of dielectric slabs with random permittivity","authors":"E. Barzegar, S. V. van Eijndhoven, M. V. van Beurden","doi":"10.1109/ICEAA.2015.7297238","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297238","url":null,"abstract":"Stacks of dielectric slabs serve as models of a large variety of engineering structures such as Bragg gratings and Vertical-Cavity Surface-Emitting lasers (VCSELs). Depending on the application, design features that describe the electromagnetic response of the structure are chosen. Subject of study in this paper is the effect of uncertainties in the material properties of the slabs. Design features are random variables and their mean and variance describe the effect of the uncertainties in a probabilistic way. In this paper, a strategy is presented to estimate these uncertainty characteristics. The strategy is illustrated for the application of VCSELs.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"117 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":"117316048","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.2015.7297123
A. Maffucci, F. Micciulla, A. Cataldo, G. Miano, Stefano Bellucci
This paper proposes a realization of an easy to manufacture graphene device with a low-cost and solvent-free procedure. It is obtained by depositing few layer graphene in a gap between to electrodes in a microstrip-like circuit. The device is characterized in DC at room temperature, and the results show a satisfactory stability of its electrical resistance, thus demonstrating the reliability of the fabrication process and the reproducibility of the proposed device.
{"title":"Synthesis and electrical characterization of Graphene Nanoplatelets","authors":"A. Maffucci, F. Micciulla, A. Cataldo, G. Miano, Stefano Bellucci","doi":"10.1109/ICEAA.2015.7297123","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297123","url":null,"abstract":"This paper proposes a realization of an easy to manufacture graphene device with a low-cost and solvent-free procedure. It is obtained by depositing few layer graphene in a gap between to electrodes in a microstrip-like circuit. The device is characterized in DC at room temperature, and the results show a satisfactory stability of its electrical resistance, thus demonstrating the reliability of the fabrication process and the reproducibility of the proposed device.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"7 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":"128289645","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.2015.7297330
D. M. Solís, J. M. Taboada, F. Obelleiro
The frontiers in the research field of nanoplasmonics are not seldom restrained by the limits imposed by available electromagnetic analysis tools, which tend to struggle when addressing realistic systems with several-wavelength electric sizes. This work shows that boundary element variational methods, along with the hierarchical spectral compression of the multilevel fast multipole algorithm (MLFMA), can effectively model the interaction of light with large nanoplasmonic assemblies, raising the bar of full-wave simulations in the field of nanoplasmonics to a new level.
{"title":"Electromagnetic analysis of large nanoplasmonic assemblies with fast multipole methods","authors":"D. M. Solís, J. M. Taboada, F. Obelleiro","doi":"10.1109/ICEAA.2015.7297330","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297330","url":null,"abstract":"The frontiers in the research field of nanoplasmonics are not seldom restrained by the limits imposed by available electromagnetic analysis tools, which tend to struggle when addressing realistic systems with several-wavelength electric sizes. This work shows that boundary element variational methods, along with the hierarchical spectral compression of the multilevel fast multipole algorithm (MLFMA), can effectively model the interaction of light with large nanoplasmonic assemblies, raising the bar of full-wave simulations in the field of nanoplasmonics to a new level.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"46 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":"128983427","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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