Pub Date : 2014-09-18DOI: 10.1109/EUCAP.2014.6902364
A. Raisanen, A. Generalov, D. Lioubtchenko, A. Rivera-Lavado, M. Mendez-Aller, L. García-Muñoz, D. Segovia-Vargas, S. Preu
A dielectric rod waveguide (DRW) made of high-dielectric-constant material such as sapphire, GaAs or Si has in the past been shown to have low transmission loss and good matching with a rectangular metal waveguide at millimetre wavelengths. Also various passive components have been demonstrated. Recently, it has been demonstrated that a single DRW antenna works well over several rectangular waveguide bands even up to 1 THz. Also first attempts have been made to integrate a photo mixer with a DRW waveguide to produce an effective THz source.
{"title":"Dielectric rod waveguide as an enabling technology for THz frequencies","authors":"A. Raisanen, A. Generalov, D. Lioubtchenko, A. Rivera-Lavado, M. Mendez-Aller, L. García-Muñoz, D. Segovia-Vargas, S. Preu","doi":"10.1109/EUCAP.2014.6902364","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902364","url":null,"abstract":"A dielectric rod waveguide (DRW) made of high-dielectric-constant material such as sapphire, GaAs or Si has in the past been shown to have low transmission loss and good matching with a rectangular metal waveguide at millimetre wavelengths. Also various passive components have been demonstrated. Recently, it has been demonstrated that a single DRW antenna works well over several rectangular waveguide bands even up to 1 THz. Also first attempts have been made to integrate a photo mixer with a DRW waveguide to produce an effective THz source.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"38 1","pages":"2638-2639"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81293504","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 : 2014-04-08DOI: 10.1109/EUCAP.2014.6902443
Q. Liu, V. Fusco, D. Linton, D. Zelenchuk
A correlation interferometer working with a cooperation target operating at 2.2GHz center frequency is presented. This simplified interferometer presented here uses a lock-in amplifier to significantly increase system sensitivity when used in conjunction with a co-operating target signaling using amplitude modulation. The system is verified by detecting the angular velocity of passing tagged target. Experimental results show detectable range up over 110 meters in a multipath environment using a 10dBm EIRP tag.
{"title":"Interferometer for co-operating target motion detection","authors":"Q. Liu, V. Fusco, D. Linton, D. Zelenchuk","doi":"10.1109/EUCAP.2014.6902443","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902443","url":null,"abstract":"A correlation interferometer working with a cooperation target operating at 2.2GHz center frequency is presented. This simplified interferometer presented here uses a lock-in amplifier to significantly increase system sensitivity when used in conjunction with a co-operating target signaling using amplitude modulation. The system is verified by detecting the angular velocity of passing tagged target. Experimental results show detectable range up over 110 meters in a multipath environment using a 10dBm EIRP tag.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"9 1","pages":"2935-2937"},"PeriodicalIF":0.0,"publicationDate":"2014-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76744704","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6902483
R. Lech, W. Marynowski, A. Kusiek
The investigation of coplanar waveguide fed ultra-wideband antenna and the influence of the proximity of different materials on the reflection coefficients and radiation characteristics is presented. The antenna is composed of two circular coplanar strips which enclose slot aperture of similar shape and is designed on a thin and flexible substrate. From the modeling and experimental tests the antenna shows good performance in 2-15GHz frequency range with return losses better than 10dB. It is shown that the proximity of different, non-metalic materials does not significantly affect antenna performance. The proximity of metalic screens deteriorates its radiation pattern and reflection coefficient. However with the correct choice of the distance between screen and antenna the required level of return losses can be provided.
{"title":"Coplanar waveguide fed ultra-wideband antenna over the planar and cylindrical surfaces","authors":"R. Lech, W. Marynowski, A. Kusiek","doi":"10.1109/EUCAP.2014.6902483","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902483","url":null,"abstract":"The investigation of coplanar waveguide fed ultra-wideband antenna and the influence of the proximity of different materials on the reflection coefficients and radiation characteristics is presented. The antenna is composed of two circular coplanar strips which enclose slot aperture of similar shape and is designed on a thin and flexible substrate. From the modeling and experimental tests the antenna shows good performance in 2-15GHz frequency range with return losses better than 10dB. It is shown that the proximity of different, non-metalic materials does not significantly affect antenna performance. The proximity of metalic screens deteriorates its radiation pattern and reflection coefficient. However with the correct choice of the distance between screen and antenna the required level of return losses can be provided.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"35 1","pages":"3097-3100"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73515845","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6902025
A. Wong, G. Eleftheriades
Recent interest in superoscillations has led to theoretical investigations as well as proposed applications in imaging and signal processing. In this paper, we elucidate the relationship between superoscillation and the closely related concept of superdirectivity. Key similarities and differences are highlighted, which showcase windows of possibility for practical superoscil-latory waveform design. Thereafter, through the example of the Optical Super-Microscope - a far-field super-resolution microscope, we demonstrate how established antenna array theory can be leveraged to design a practical superoscillatory filter, which enables far-field sub-diffraction optical imaging. We end by reporting our current progress with the Optical Super-Microscope and suggest future directions to improve its imaging capability.
{"title":"Superdirectivity-based superoscillatory waveform design: A practical path to far-field sub-diffraction imaging","authors":"A. Wong, G. Eleftheriades","doi":"10.1109/EUCAP.2014.6902025","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902025","url":null,"abstract":"Recent interest in superoscillations has led to theoretical investigations as well as proposed applications in imaging and signal processing. In this paper, we elucidate the relationship between superoscillation and the closely related concept of superdirectivity. Key similarities and differences are highlighted, which showcase windows of possibility for practical superoscil-latory waveform design. Thereafter, through the example of the Optical Super-Microscope - a far-field super-resolution microscope, we demonstrate how established antenna array theory can be leveraged to design a practical superoscillatory filter, which enables far-field sub-diffraction optical imaging. We end by reporting our current progress with the Optical Super-Microscope and suggest future directions to improve its imaging capability.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"28 1","pages":"1340-1344"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73655801","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6901860
J. Grzyb, Yan Zhao, R. Al Hadi, U. Pfeiffer
This paper reports on design of differentially driven lens-integrated on-chip ring antennas with harmonic filtering for both CMOS and SiGe HBT highly integrated mm-wave and THz N-push oscillators. Two state-of-the-art circuit/ antenna co-design examples of high-power sources are presented: at 288 GHz in 65nm CMOS technology and at 530 GHz in 0.13μm SiGe BiCMOS technology. The 530 GHz version is additionally extended into a 4×4 array with configurable radiation pattern diversity and capable of providing a total radiated power of up to 1mW.
{"title":"On design of differentially driven on-chip antennas with harmonic filtering for silicon integrated mm-wave and THz N-push oscillators","authors":"J. Grzyb, Yan Zhao, R. Al Hadi, U. Pfeiffer","doi":"10.1109/EUCAP.2014.6901860","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6901860","url":null,"abstract":"This paper reports on design of differentially driven lens-integrated on-chip ring antennas with harmonic filtering for both CMOS and SiGe HBT highly integrated mm-wave and THz N-push oscillators. Two state-of-the-art circuit/ antenna co-design examples of high-power sources are presented: at 288 GHz in 65nm CMOS technology and at 530 GHz in 0.13μm SiGe BiCMOS technology. The 530 GHz version is additionally extended into a 4×4 array with configurable radiation pattern diversity and capable of providing a total radiated power of up to 1mW.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"45 1","pages":"717-721"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73746256","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6902532
Y. D. de Jong, P. Bouchard, Gerald Shewan
Results are presented of propagation measurements at 700, 2600 and 4900 MHz, in an environment representative of expected small-cell deployments, i.e., with the transmitting antenna located below the rooftop of a nearby building and/or indoors. Building shadowing and exit loss are estimated by comparing spatial propagation loss distributions measured in the area around a transmitting antenna located, alternately, at various heights outside a building, and on different storeys inside the building.
{"title":"Experimental characterization of building shadowing and exit loss in a small-cell environment at 700, 2600 and 4900 MHz","authors":"Y. D. de Jong, P. Bouchard, Gerald Shewan","doi":"10.1109/EUCAP.2014.6902532","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902532","url":null,"abstract":"Results are presented of propagation measurements at 700, 2600 and 4900 MHz, in an environment representative of expected small-cell deployments, i.e., with the transmitting antenna located below the rooftop of a nearby building and/or indoors. Building shadowing and exit loss are estimated by comparing spatial propagation loss distributions measured in the area around a transmitting antenna located, alternately, at various heights outside a building, and on different storeys inside the building.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"8 1","pages":"3291-3295"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75650394","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6901730
Jonas Medbo, K. Börner, Katsuyuki Haneda, V. Hovinen, T. Imai, J. Jarvelainen, T. Jamsa, A. Karttunen, K. Kusume, J. Kyrolainen, P. Kyosti, J. Meinila, V. Nurmela, Leszek Raschkowski, A. Roivainen, Juha Ylitalo
The main objective of this paper is to present major challenges regarding the fifth generation (5G) mobile communications propagation modelling work in the European 7th framework project METIS (Mobile and wireless communications Enablers for the Twenty-twenty Information Society). The goal of the propagation work in METIS is to provide adequate propagation models for 5G. For this purpose corresponding deficiencies of present commonly used models are identified. Further, the lack of available channel models for several propagation scenarios has been assessed. Based on this assessment the framework of 5G channel modelling is sketched. As propagation measurement campaigns are a crucial part of this work they are illustrated with a few examples.
{"title":"Channel modelling for the fifth generation mobile communications","authors":"Jonas Medbo, K. Börner, Katsuyuki Haneda, V. Hovinen, T. Imai, J. Jarvelainen, T. Jamsa, A. Karttunen, K. Kusume, J. Kyrolainen, P. Kyosti, J. Meinila, V. Nurmela, Leszek Raschkowski, A. Roivainen, Juha Ylitalo","doi":"10.1109/EUCAP.2014.6901730","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6901730","url":null,"abstract":"The main objective of this paper is to present major challenges regarding the fifth generation (5G) mobile communications propagation modelling work in the European 7th framework project METIS (Mobile and wireless communications Enablers for the Twenty-twenty Information Society). The goal of the propagation work in METIS is to provide adequate propagation models for 5G. For this purpose corresponding deficiencies of present commonly used models are identified. Further, the lack of available channel models for several propagation scenarios has been assessed. Based on this assessment the framework of 5G channel modelling is sketched. As propagation measurement campaigns are a crucial part of this work they are illustrated with a few examples.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"12 1","pages":"219-223"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75792175","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6902137
E. Vitucci, F. Fuschini, V. Degli‐Esposti
In the present work a 3D Ray Tracing model is used to predict the wideband characteristics of the radio channel in a large indoor environment. A detailed analysis is carried out to show not only the wideband prediction accuracy potential of ray tracing, but also how the potential can be reached. In particular the description of the environment, which should include the surrounding buildings, and other computation parameters have a significant impact on the reliability of the simulation results.
{"title":"Ray Tracing simulation of the radio channel time-and angle-dispersion in large indoor environments","authors":"E. Vitucci, F. Fuschini, V. Degli‐Esposti","doi":"10.1109/EUCAP.2014.6902137","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902137","url":null,"abstract":"In the present work a 3D Ray Tracing model is used to predict the wideband characteristics of the radio channel in a large indoor environment. A detailed analysis is carried out to show not only the wideband prediction accuracy potential of ray tracing, but also how the potential can be reached. In particular the description of the environment, which should include the surrounding buildings, and other computation parameters have a significant impact on the reliability of the simulation results.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"32 1","pages":"1771-1774"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75805815","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6901993
V. Galdi
We present an overview of results from our recent and ongoing research in the field of metamaterials. In particular, we focus on the recently emerged concepts of parity-time-symmetric metamaterials, metamaterial analog computing, and transformation multiphysics.
{"title":"Some new perspectives in metamaterials","authors":"V. Galdi","doi":"10.1109/EUCAP.2014.6901993","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6901993","url":null,"abstract":"We present an overview of results from our recent and ongoing research in the field of metamaterials. In particular, we focus on the recently emerged concepts of parity-time-symmetric metamaterials, metamaterial analog computing, and transformation multiphysics.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"35 1","pages":"1214-1215"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72955027","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 : 2014-04-06DOI: 10.1109/EUCAP.2014.6902221
R. Bharadwaj, C. Parini, A. Alomainy
This paper presents a study of 3D localisation of body-worn sensors using Ultra Wideband technology. Two different sensor locations are considered; one near the elbow and one on the chest. A comparative study is made between both the sensors in terms of accuracy obtained in estimation of unknown coordinates. Results show that accuracy in estimation of location of the sensor depends on the position it is placed on the human body, configuration of the base stations and the propagation phenomenon in the indoor environment in which localisation is taking place. The average accuracy in 3D localisation is around 2 to 3 cm for sensor placed on the elbow and 2.5 to 4 cm for the sensor placed on the chest.
{"title":"Indoor tracking of human movements using UWB technology for motion capture","authors":"R. Bharadwaj, C. Parini, A. Alomainy","doi":"10.1109/EUCAP.2014.6902221","DOIUrl":"https://doi.org/10.1109/EUCAP.2014.6902221","url":null,"abstract":"This paper presents a study of 3D localisation of body-worn sensors using Ultra Wideband technology. Two different sensor locations are considered; one near the elbow and one on the chest. A comparative study is made between both the sensors in terms of accuracy obtained in estimation of unknown coordinates. Results show that accuracy in estimation of location of the sensor depends on the position it is placed on the human body, configuration of the base stations and the propagation phenomenon in the indoor environment in which localisation is taking place. The average accuracy in 3D localisation is around 2 to 3 cm for sensor placed on the elbow and 2.5 to 4 cm for the sensor placed on the chest.","PeriodicalId":22362,"journal":{"name":"The 8th European Conference on Antennas and Propagation (EuCAP 2014)","volume":"82 1","pages":"2097-2099"},"PeriodicalIF":0.0,"publicationDate":"2014-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73057395","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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