Pub Date : 2016-06-02DOI: 10.1109/EUCAP.2016.7481309
M. Sallam, A. Badawi, E. Soliman
This paper presents an electrically small meander line antenna fed by slot line transmission line. The antenna is designed for bio-medical telemetry where it operates at the Medical Implant Communication Band. Silicon substrate of high resistivity is used as a substrate. The dimensions of the antenna are λ0/75-by λ0/75. In this study, the three-layer (skin/fat/muscle) model is used to simulate human's body. The antenna is assumed to be located at the middle of the muscle layer. The optimized antenna has the following characteristics: it has 160 MHz bandwidth around the center frequency 400 MHz. The antenna has -36.54 dBi gain. This low gain is attributed to the human body losses in addition to the small electrical size of the antenna.
{"title":"Design of an implantable miniaturized meander line antenna for biomedical telemetry","authors":"M. Sallam, A. Badawi, E. Soliman","doi":"10.1109/EUCAP.2016.7481309","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481309","url":null,"abstract":"This paper presents an electrically small meander line antenna fed by slot line transmission line. The antenna is designed for bio-medical telemetry where it operates at the Medical Implant Communication Band. Silicon substrate of high resistivity is used as a substrate. The dimensions of the antenna are λ0/75-by λ0/75. In this study, the three-layer (skin/fat/muscle) model is used to simulate human's body. The antenna is assumed to be located at the middle of the muscle layer. The optimized antenna has the following characteristics: it has 160 MHz bandwidth around the center frequency 400 MHz. The antenna has -36.54 dBi gain. This low gain is attributed to the human body losses in addition to the small electrical size of the antenna.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"169 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89024035","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481683
T. Pelham, G. Hilton, E. Mellios, C. Railton, Rob Lewis
A comparison of Finite Difference Time Domain (FDTD) methods, for conformal antenna array modelling. This study includes the measurement of Dual Feed Dual Circular Patch Antenna elements mounted in the Variable Geometry Conformal Antenna Array Test Rig. These measurements together with predictions from the Bristol FDTD Model, allows a comparison of antenna array measurements with model predictions over a range of conformal curvatures, with an aim to reducing technical risks in conformal antenna array design.
{"title":"Conformal antenna array modelling, FDTD predictions and measurements for Dual Circular Patch in Variable Geometry Conformal Antenna Array Test Rig","authors":"T. Pelham, G. Hilton, E. Mellios, C. Railton, Rob Lewis","doi":"10.1109/EUCAP.2016.7481683","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481683","url":null,"abstract":"A comparison of Finite Difference Time Domain (FDTD) methods, for conformal antenna array modelling. This study includes the measurement of Dual Feed Dual Circular Patch Antenna elements mounted in the Variable Geometry Conformal Antenna Array Test Rig. These measurements together with predictions from the Bristol FDTD Model, allows a comparison of antenna array measurements with model predictions over a range of conformal curvatures, with an aim to reducing technical risks in conformal antenna array design.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"1 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83128296","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481356
S. Venkatasubramanian, L. Laughlin, K. Haneda, M. Beach
In-band full-duplex relaying has been of recent interest as it can potentially double spectral efficiency and decrease latency, thus improving throughput to the end user. The bottleneck in enabling full-duplex operation is the self-interference (SI) due to the relay's own transmission, which must be mitigated at the antenna, radio frequency and digital domains. In the case of compact back-to-back relays which are proposed for outdoor-to-indoor relaying, the SI comprises direct coupling and multipath components. This paper models the SI channel across 300MHz bandwidth at 2.6GHz in two indoor environments with a back-to-back relay antenna. The power delay profile of the SI channel is modelled as a single decaying exponential function with specular components represented by delta functions. The fading characteristics of each tap are modelled by a normal distribution based on the measurements. The proposed model can be used to generate a tapped-delay model of the SI channel between compact back-to-back antennas for use in link-level simulations and hardware in the loop emulation.
{"title":"Wideband self-interference channel modelling for an on-frequency repeater","authors":"S. Venkatasubramanian, L. Laughlin, K. Haneda, M. Beach","doi":"10.1109/EUCAP.2016.7481356","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481356","url":null,"abstract":"In-band full-duplex relaying has been of recent interest as it can potentially double spectral efficiency and decrease latency, thus improving throughput to the end user. The bottleneck in enabling full-duplex operation is the self-interference (SI) due to the relay's own transmission, which must be mitigated at the antenna, radio frequency and digital domains. In the case of compact back-to-back relays which are proposed for outdoor-to-indoor relaying, the SI comprises direct coupling and multipath components. This paper models the SI channel across 300MHz bandwidth at 2.6GHz in two indoor environments with a back-to-back relay antenna. The power delay profile of the SI channel is modelled as a single decaying exponential function with specular components represented by delta functions. The fading characteristics of each tap are modelled by a normal distribution based on the measurements. The proposed model can be used to generate a tapped-delay model of the SI channel between compact back-to-back antennas for use in link-level simulations and hardware in the loop emulation.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"4 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90170758","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481662
M. Albooyeh, C. Simovski, S. Tretyakov
In this overview talk we will present a methodology for homogenization and electromagnetic characterization of general bianisotropic metasurfaces. Compared to the two known alternative theories developed by the joint group of profs. Holloway and Kuester and the joint group of profs. Simovski and Tretyakov, this generalized framework allows characterization of both periodical or amorphous metasurfaces formed by bianisotropic unit cells located at interfaces between two different media or on a substrate. The developed analytical theory can be used in the analysis and synthesis of metasurfaces for a wide variety of applications.
{"title":"Homogenization and characterization of metasurfaces: General framework","authors":"M. Albooyeh, C. Simovski, S. Tretyakov","doi":"10.1109/EUCAP.2016.7481662","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481662","url":null,"abstract":"In this overview talk we will present a methodology for homogenization and electromagnetic characterization of general bianisotropic metasurfaces. Compared to the two known alternative theories developed by the joint group of profs. Holloway and Kuester and the joint group of profs. Simovski and Tretyakov, this generalized framework allows characterization of both periodical or amorphous metasurfaces formed by bianisotropic unit cells located at interfaces between two different media or on a substrate. The developed analytical theory can be used in the analysis and synthesis of metasurfaces for a wide variety of applications.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"4 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90160799","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481526
Miah Md. Suzan, K. Haneda, C. Icheln, A. Khatun, K. Takizawa
In this paper, an ultra wideband loop antenna is presented for capsule endoscope system operating around 433 MHz. The antenna occupies the outer-wall of the capsule and leaves the inner space for the other components of the capsule endoscope module. The proposed capsule antenna has a -10 dB impedance matching bandwidth of 744 MHz (from 336 to 1080 MHz). The ultra wideband characteristic enables the capsule antenna to compensate for detuning effects due to electronics components in the capsule endoscope module, different tissues in the gastrointestinal tract, and implant locations. The antenna has a nearly omnidirectional radiation pattern, which is usually required for such applications. The resonance performance of the fabricated antenna is validated by comparing the measured results with that of simulations when the antenna is placed in a human equivalent liquid phantom.
{"title":"An ultrawideband conformal loop antenna for ingestible capsule endoscope system","authors":"Miah Md. Suzan, K. Haneda, C. Icheln, A. Khatun, K. Takizawa","doi":"10.1109/EUCAP.2016.7481526","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481526","url":null,"abstract":"In this paper, an ultra wideband loop antenna is presented for capsule endoscope system operating around 433 MHz. The antenna occupies the outer-wall of the capsule and leaves the inner space for the other components of the capsule endoscope module. The proposed capsule antenna has a -10 dB impedance matching bandwidth of 744 MHz (from 336 to 1080 MHz). The ultra wideband characteristic enables the capsule antenna to compensate for detuning effects due to electronics components in the capsule endoscope module, different tissues in the gastrointestinal tract, and implant locations. The antenna has a nearly omnidirectional radiation pattern, which is usually required for such applications. The resonance performance of the fabricated antenna is validated by comparing the measured results with that of simulations when the antenna is placed in a human equivalent liquid phantom.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"21 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85556203","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481652
J. Ilvonen, J. Holopainen, K. Rasilainen, A. Lehtovuori, V. Viikari
This paper introduces an S-parameter-based method for characterizing and improving the electromagnetic (EM) isolation between antennas in handsets. Eight different antenna placements are investigated across a frequency range of 400- 6000MHz covering all possible LTE-A bands. Simulations of realistic antenna elements validate the theoretical results. The results show that at least three antennas are needed in order to find a well-isolated pair at a given frequency.
{"title":"Suitable multiantenna placement in mobile handsets based on electromagnetic isolation","authors":"J. Ilvonen, J. Holopainen, K. Rasilainen, A. Lehtovuori, V. Viikari","doi":"10.1109/EUCAP.2016.7481652","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481652","url":null,"abstract":"This paper introduces an S-parameter-based method for characterizing and improving the electromagnetic (EM) isolation between antennas in handsets. Eight different antenna placements are investigated across a frequency range of 400- 6000MHz covering all possible LTE-A bands. Simulations of realistic antenna elements validate the theoretical results. The results show that at least three antennas are needed in order to find a well-isolated pair at a given frequency.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"147 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91208985","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481283
Jari-Matti Hannula, V. Viikari
Intermodulation measurement principle has been proposed for characterizing transponder antennas. Although the method seems to offer certain advantages compared to traditional antenna characterization methods, the measurement uncertainty has not yet been well characterized. We aim at identifying the main sources of measurement uncertainty and estimating the achievable accuracy in a certain case at 1 GHz.
{"title":"Uncertainty analysis of intermodulation-based antenna measurements","authors":"Jari-Matti Hannula, V. Viikari","doi":"10.1109/EUCAP.2016.7481283","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481283","url":null,"abstract":"Intermodulation measurement principle has been proposed for characterizing transponder antennas. Although the method seems to offer certain advantages compared to traditional antenna characterization methods, the measurement uncertainty has not yet been well characterized. We aim at identifying the main sources of measurement uncertainty and estimating the achievable accuracy in a certain case at 1 GHz.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"28 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77570392","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481279
Ana Arboleya, J. Laviada, J. Ala-Laurinaho, Y. Alvarez, F. Las-Heras, A. Raisanen
A new method recently developed for planar nearfield broadband phaseless antenna measurement is adapted to work with a reduced set of points. The method is an extrapolation of the conventional off-axis holography in which a frequency sweep is made at each point of the acquisition grid, and the phase is retrieved simultaneously for all the frequencies by filtering the hologram in the time-domain. As the phase is retrieved independently at each acquisition point, non redundant sampling techniques can be applied without the need of increasing the spatial bandwidth of the hologram. The bounds of the error in the far field pattern regarding the effect of mechanical errors and noise are studied by means of Monte Carlo simulations. A measurement example in the Ka band is presented to validate the method.
{"title":"Reduced set of points in phaseless broadband near-field antenna measurement: Effects of noise and mechanical errors","authors":"Ana Arboleya, J. Laviada, J. Ala-Laurinaho, Y. Alvarez, F. Las-Heras, A. Raisanen","doi":"10.1109/EUCAP.2016.7481279","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481279","url":null,"abstract":"A new method recently developed for planar nearfield broadband phaseless antenna measurement is adapted to work with a reduced set of points. The method is an extrapolation of the conventional off-axis holography in which a frequency sweep is made at each point of the acquisition grid, and the phase is retrieved simultaneously for all the frequencies by filtering the hologram in the time-domain. As the phase is retrieved independently at each acquisition point, non redundant sampling techniques can be applied without the need of increasing the spatial bandwidth of the hologram. The bounds of the error in the far field pattern regarding the effect of mechanical errors and noise are studied by means of Monte Carlo simulations. A measurement example in the Ka band is presented to validate the method.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"62 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86093055","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481727
J. Wagen, U. Virk, K. Haneda
Describing the environment using a point cloud is a promising method for both propagation predictions and channel simulations. Recently, a specular reflection model has been proposed and verified through measurements to account for reflections from large reflecting surfaces. Here, the formulation for the specular reflections for point cloud (SRPC) is improved based on a few canonical measurements in an anechoic chamber. The specular reflection image theory for large surfaces, the Radar Cross Section equation for small surfaces, the Fresnel-Kirchhoff integral formula, and measurements are investigated. Unexpectedly to the authors, the results show that, when neglecting the diffraction effects, the contributions to the specular reflected field occur mainly from the illumination of about a third of the first Fresnel zone. A prediction of the SRPC formula is the appearance of “radio flares” due to electrically small reflecting surfaces.
{"title":"Measurements based specular reflection formulation for point cloud modelling","authors":"J. Wagen, U. Virk, K. Haneda","doi":"10.1109/EUCAP.2016.7481727","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481727","url":null,"abstract":"Describing the environment using a point cloud is a promising method for both propagation predictions and channel simulations. Recently, a specular reflection model has been proposed and verified through measurements to account for reflections from large reflecting surfaces. Here, the formulation for the specular reflections for point cloud (SRPC) is improved based on a few canonical measurements in an anechoic chamber. The specular reflection image theory for large surfaces, the Radar Cross Section equation for small surfaces, the Fresnel-Kirchhoff integral formula, and measurements are investigated. Unexpectedly to the authors, the results show that, when neglecting the diffraction effects, the contributions to the specular reflected field occur mainly from the illumination of about a third of the first Fresnel zone. A prediction of the SRPC formula is the appearance of “radio flares” due to electrically small reflecting surfaces.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"96 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80128103","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 : 2016-05-31DOI: 10.1109/EUCAP.2016.7481784
A. Sihvola, D. Tzarouchis, P. Yla-Oijala
This presentation focuses on the way how geometrical shape of nanoparticles affects the spectral properties of their surface plasmon resonances. Furthermore, intuitive understanding of the shifting of the plasmonic peaks can be gathered from quasistatic results. The domain of validity of the quasistatic analysis is charted for different types of nanoparticles.
{"title":"Spectral properties of plasmonic nanoantennas: Comparison of quasistatic and full-wave analyses","authors":"A. Sihvola, D. Tzarouchis, P. Yla-Oijala","doi":"10.1109/EUCAP.2016.7481784","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481784","url":null,"abstract":"This presentation focuses on the way how geometrical shape of nanoparticles affects the spectral properties of their surface plasmon resonances. Furthermore, intuitive understanding of the shifting of the plasmonic peaks can be gathered from quasistatic results. The domain of validity of the quasistatic analysis is charted for different types of nanoparticles.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"74 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86302247","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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