Pub Date : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814365
Dor Zvulun, Y. Brick, A. Boag
To enable the development of low-rank compressible generalized sources integral equations, a modified three-dimensional source is presented. Its design is an extension of a two-dimensional generalized source, composed of an elemental source and an auxiliary absorbing shield. On the shield, equivalent sources are defined to approximately cancel the broadside radiation in the direction of potential observers on an essentially convex geometry. The design principles are discussed and means for the efficient computation of the generalized source’s modified Green’s function, from tabulated samples using non-uniform grids, are described.
{"title":"Three-Dimensional Generalized Sources for Integral Equation Solvers","authors":"Dor Zvulun, Y. Brick, A. Boag","doi":"10.23919/AT-AP-RASC54737.2022.9814365","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814365","url":null,"abstract":"To enable the development of low-rank compressible generalized sources integral equations, a modified three-dimensional source is presented. Its design is an extension of a two-dimensional generalized source, composed of an elemental source and an auxiliary absorbing shield. On the shield, equivalent sources are defined to approximately cancel the broadside radiation in the direction of potential observers on an essentially convex geometry. The design principles are discussed and means for the efficient computation of the generalized source’s modified Green’s function, from tabulated samples using non-uniform grids, are described.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125865700","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814254
A. Yasyukevich, A. Vesnin
In the study, we carried out a joint analysis of the spatio-temporal dynamics of ionospheric and stratospheric short-period variability. We analyze the periods of winters of 2008–2009, 2012–2013, and 2018–2019, when strong midwinter sudden stratospheric warmings (SSW) occurred. During quiet winter periods, the stratospheric variability index is shown to be increased at a limited latitudinal interval of 40-65°N. Under SSW condition, the generation of disturbances in the stratosphere stops and a decrease in the stratosphere disturbance index appears. The index keeps low values for up to a month. The latitudinal-temporal distributions of the ionospheric TEC variability index vrTEC also show similar dynamics. The level of ionospheric variability decreases after the SSW onset in the stratosphere. The decrease in the short-period ionospheric variability can be explained by reduction of wave generation in the stratosphere, associated with the destruction of the jet stream during SSW periods.
{"title":"Short-period variability in the ionosphere and the stratosphere related to winter jet stream","authors":"A. Yasyukevich, A. Vesnin","doi":"10.23919/AT-AP-RASC54737.2022.9814254","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814254","url":null,"abstract":"In the study, we carried out a joint analysis of the spatio-temporal dynamics of ionospheric and stratospheric short-period variability. We analyze the periods of winters of 2008–2009, 2012–2013, and 2018–2019, when strong midwinter sudden stratospheric warmings (SSW) occurred. During quiet winter periods, the stratospheric variability index is shown to be increased at a limited latitudinal interval of 40-65°N. Under SSW condition, the generation of disturbances in the stratosphere stops and a decrease in the stratosphere disturbance index appears. The index keeps low values for up to a month. The latitudinal-temporal distributions of the ionospheric TEC variability index vrTEC also show similar dynamics. The level of ionospheric variability decreases after the SSW onset in the stratosphere. The decrease in the short-period ionospheric variability can be explained by reduction of wave generation in the stratosphere, associated with the destruction of the jet stream during SSW periods.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129311457","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814325
Victor Paheco-Peña, N. Engheta
Temporal and spatiotemporally modulated media are becoming new paradigms for a full manipulation of electromagnetic wave propagation in four dimensions (x,y,z,t). Here we will give an overview of our recent efforts in exploiting temporal metamaterials where the permittivity of the medium where the wave travels is changed from isotropic to an anisotropic tensor. An indepth discussion will be presented during the conference demonstrating how such temporal boundaries can be engineered to achieve the temporal version of the spatial Brewster angle.
{"title":"What is the temporal analogue of the spatial Brewster angle?","authors":"Victor Paheco-Peña, N. Engheta","doi":"10.23919/AT-AP-RASC54737.2022.9814325","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814325","url":null,"abstract":"Temporal and spatiotemporally modulated media are becoming new paradigms for a full manipulation of electromagnetic wave propagation in four dimensions (x,y,z,t). Here we will give an overview of our recent efforts in exploiting temporal metamaterials where the permittivity of the medium where the wave travels is changed from isotropic to an anisotropic tensor. An indepth discussion will be presented during the conference demonstrating how such temporal boundaries can be engineered to achieve the temporal version of the spatial Brewster angle.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129229026","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814202
A. Lee, Jin Seo Park, Hyung-Do Choi
The surface model of a rhesus monkey in the Visible Monkey project of Korea had been implemented. However, the posture of the monkey model is very different from that of a live monkey because the original images were obtained in a supine position. Therefore, the monkey models in walking and sitting postures, close to those of a live monkey were realized. This paper presents the SAR results calculated for the monkey model in a walking posture exposed to electromagnetic fields in a reverberation chamber.
{"title":"A Rhesus Monkey Model and WBA SAR","authors":"A. Lee, Jin Seo Park, Hyung-Do Choi","doi":"10.23919/AT-AP-RASC54737.2022.9814202","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814202","url":null,"abstract":"The surface model of a rhesus monkey in the Visible Monkey project of Korea had been implemented. However, the posture of the monkey model is very different from that of a live monkey because the original images were obtained in a supine position. Therefore, the monkey models in walking and sitting postures, close to those of a live monkey were realized. This paper presents the SAR results calculated for the monkey model in a walking posture exposed to electromagnetic fields in a reverberation chamber.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121107693","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814421
R. Millan, J. Ripoll
This summary paper reports progress on an ongoing investigation of radiation belt electron pitch-angle scattering by plume hiss waves. We further analyze an electron precipitation event observed by BARREL, first reported in [1]. We find that the bremsstrahlung x-ray spectrum observed by BARREL is not consistent with an exponential precipitating electron energy spectrum, and is harder than the trapped electron spectrum measured by Van Allen Probes. We extend our quasi-linear diffusion model to consider a more realistic initial electron energy spectrum. The evolution of the electron phase space density towards a harder energy spectrum is qualitatively consistent with the BARREL observations and is attributed to the rapid loss of low energy particles at early times during their non-equilibrium interaction with the plume hiss waves.
{"title":"Fast Non-Equilibrium Pitch Angle Diffusion in a Plasmaspheric Plume Associated with BARREL Precipitation","authors":"R. Millan, J. Ripoll","doi":"10.23919/AT-AP-RASC54737.2022.9814421","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814421","url":null,"abstract":"This summary paper reports progress on an ongoing investigation of radiation belt electron pitch-angle scattering by plume hiss waves. We further analyze an electron precipitation event observed by BARREL, first reported in [1]. We find that the bremsstrahlung x-ray spectrum observed by BARREL is not consistent with an exponential precipitating electron energy spectrum, and is harder than the trapped electron spectrum measured by Van Allen Probes. We extend our quasi-linear diffusion model to consider a more realistic initial electron energy spectrum. The evolution of the electron phase space density towards a harder energy spectrum is qualitatively consistent with the BARREL observations and is attributed to the rapid loss of low energy particles at early times during their non-equilibrium interaction with the plume hiss waves.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121198448","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814179
B. Koribalski
Science results from pilot surveys with the full 36-antenna Australian Square Kilometer Array Pathfinder (ASKAP) have increased strongly over the last few years. This trend is likely to continue with full surveys scheduled to commence later this year. Thanks to novel Phased Array Feeds each ASKAP pointing covers around 30 square degr, making it a fast survey machine delivering high-resolution radio images of the sky. Among recent science highlights are the studies of neutral hydrogen in the Magellanic Clouds as well as nearby galaxy groups and clusters, catalogs of millions of radio continuum sources, the discovery of odd radio circles, and the localization of fast radio bursts, to name just a few. To demonstrate the ASKAP survey speed we also conducted the Rapid ASKAP Continuum Survey (RACS) covering the whole sky south of declination +41 degr at 15 arcsec resolution.
{"title":"The technological and scientific development of ASKAP","authors":"B. Koribalski","doi":"10.23919/AT-AP-RASC54737.2022.9814179","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814179","url":null,"abstract":"Science results from pilot surveys with the full 36-antenna Australian Square Kilometer Array Pathfinder (ASKAP) have increased strongly over the last few years. This trend is likely to continue with full surveys scheduled to commence later this year. Thanks to novel Phased Array Feeds each ASKAP pointing covers around 30 square degr, making it a fast survey machine delivering high-resolution radio images of the sky. Among recent science highlights are the studies of neutral hydrogen in the Magellanic Clouds as well as nearby galaxy groups and clusters, catalogs of millions of radio continuum sources, the discovery of odd radio circles, and the localization of fast radio bursts, to name just a few. To demonstrate the ASKAP survey speed we also conducted the Rapid ASKAP Continuum Survey (RACS) covering the whole sky south of declination +41 degr at 15 arcsec resolution.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116402226","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814395
M. Binois, R. Duvigneau, M. Elsawy, P. Genevet, Samira Kadhir, St'ephane Lanteri, Nicolas Lebbe
The last 10 years have witnessed an impressive amount of works aiming at the development of thin metamaterials for controlling the wavefront of light, and thus realize planar photonics also referred as flat optics or metaoptics. The concept of metasurface is at the heart of almost all the discoveries in this domain. Metasurfaces are arrays of subwavelength-spaced and optically thin optical elements, which enable new physics and phenomena that are distinctly different from those observed in three-dimensional bulk metamaterials. We present here our recent activities and achievements in relation with the design of metasurfaces, which are concerned with two topics: on one hand, we study numerical characterization approaches that are well suited to the multiscale nature of metasurfaces; on the other hand, we develop inverse design strategies for discovering non-classical metasurface configurations for a target optical functionality. These two topics are addressed in the context of a multidisciplinary collaborative project, which involve computational scientists and physicists. In particular, we apply the proposed numerical methodologies to the design of phase gradient metasurfaces and light front shaping metalenses. In some cases, the numerically designed metasurfaces have been frabricated and experimentally characterized to confirm their predicted performances.
{"title":"Advanced Numerical Modeling Methods for the Characterization and Optimization of Metasurfaces","authors":"M. Binois, R. Duvigneau, M. Elsawy, P. Genevet, Samira Kadhir, St'ephane Lanteri, Nicolas Lebbe","doi":"10.23919/AT-AP-RASC54737.2022.9814395","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814395","url":null,"abstract":"The last 10 years have witnessed an impressive amount of works aiming at the development of thin metamaterials for controlling the wavefront of light, and thus realize planar photonics also referred as flat optics or metaoptics. The concept of metasurface is at the heart of almost all the discoveries in this domain. Metasurfaces are arrays of subwavelength-spaced and optically thin optical elements, which enable new physics and phenomena that are distinctly different from those observed in three-dimensional bulk metamaterials. We present here our recent activities and achievements in relation with the design of metasurfaces, which are concerned with two topics: on one hand, we study numerical characterization approaches that are well suited to the multiscale nature of metasurfaces; on the other hand, we develop inverse design strategies for discovering non-classical metasurface configurations for a target optical functionality. These two topics are addressed in the context of a multidisciplinary collaborative project, which involve computational scientists and physicists. In particular, we apply the proposed numerical methodologies to the design of phase gradient metasurfaces and light front shaping metalenses. In some cases, the numerically designed metasurfaces have been frabricated and experimentally characterized to confirm their predicted performances.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125806830","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814259
Giorgos Kokkinis, Z. Zaharis, P. Lazaridis, N. Kantartzis
In this paper, an effort is made to solve the direction of arrival (DoA) estimation problem by constructing a convolutional neural network (CNN) architecture, which estimates the angles of arrival of the incoming source signals received by a uniform linear array (ULA) antenna. The input of the CNN is the sampled correlation matrix of the signals, while the the output is a pool of the highest probabilities of the network’s estimated values. The problem is modeled as a multi-label classification task, meaning that the space of angles is divided into a grid of multiple classes. To model the problem in this way, we assume that we cannot have two or more signals coming from the same angle. This also allows us to further increase the quality of our predictions, meaning that we can set an a priori minimum distance between each given output. In this way we can filter out duplicate outputs and have the desired result.
{"title":"Direction of Arrival Estimation Applied to Antenna Arrays using Convolutional Neural Networks","authors":"Giorgos Kokkinis, Z. Zaharis, P. Lazaridis, N. Kantartzis","doi":"10.23919/AT-AP-RASC54737.2022.9814259","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814259","url":null,"abstract":"In this paper, an effort is made to solve the direction of arrival (DoA) estimation problem by constructing a convolutional neural network (CNN) architecture, which estimates the angles of arrival of the incoming source signals received by a uniform linear array (ULA) antenna. The input of the CNN is the sampled correlation matrix of the signals, while the the output is a pool of the highest probabilities of the network’s estimated values. The problem is modeled as a multi-label classification task, meaning that the space of angles is divided into a grid of multiple classes. To model the problem in this way, we assume that we cannot have two or more signals coming from the same angle. This also allows us to further increase the quality of our predictions, meaning that we can set an a priori minimum distance between each given output. In this way we can filter out duplicate outputs and have the desired result.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125844463","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814362
Devojyoti Kansabanik, D. Oberoi, Surajit Mondal
Magnetic field couples the solar interior to the solar atmosphere, known as corona. Coronal magnetic field is one of the crucial parameters which determines the coronal structures and regulates the space weather phenomena like flares, coronal mass ejections, energetic particle events and solar winds [1], [18]. Measuring the magnetic field at middle and higher coronal heights are extremely difficult problem and to date there is no single measurement technique available to measure the higher coronal magnetic fields routinely. polarization measurements of the low-frequency radio emissions are an ideal tool to probe the coronal magnetic fields at higher coronal heights (> 1R⊙). Till date most of the low-frequency polarization observations of the Sun were limited to bright solar radio bursts. Here we developed a novel algorithm for performing precise polarization calibration of the solar observations done with Murchison Widefield Array, a future Square Kilometer Array (SKA) precursor. We have brought down the instrumental polarization < 1%. We anticipate this method will allow us to detect very low level polarised emissions from coronal thermal emissions, which will become a tool for routine measurements of global coronal magnetic field at higher coronal heights. This method can be easily adopted for future SKA and open a window of new discoveries using high fidelity spectro-polarimetric snapshot imaging of the Sun at low radio frequencies.
{"title":"A novel algorithm for high fidelity spectro-polarimetric snapshot imaging of the low-frequency radio Sun using SKA-low precursor","authors":"Devojyoti Kansabanik, D. Oberoi, Surajit Mondal","doi":"10.23919/AT-AP-RASC54737.2022.9814362","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814362","url":null,"abstract":"Magnetic field couples the solar interior to the solar atmosphere, known as corona. Coronal magnetic field is one of the crucial parameters which determines the coronal structures and regulates the space weather phenomena like flares, coronal mass ejections, energetic particle events and solar winds [1], [18]. Measuring the magnetic field at middle and higher coronal heights are extremely difficult problem and to date there is no single measurement technique available to measure the higher coronal magnetic fields routinely. polarization measurements of the low-frequency radio emissions are an ideal tool to probe the coronal magnetic fields at higher coronal heights (> 1R⊙). Till date most of the low-frequency polarization observations of the Sun were limited to bright solar radio bursts. Here we developed a novel algorithm for performing precise polarization calibration of the solar observations done with Murchison Widefield Array, a future Square Kilometer Array (SKA) precursor. We have brought down the instrumental polarization < 1%. We anticipate this method will allow us to detect very low level polarised emissions from coronal thermal emissions, which will become a tool for routine measurements of global coronal magnetic field at higher coronal heights. This method can be easily adopted for future SKA and open a window of new discoveries using high fidelity spectro-polarimetric snapshot imaging of the Sun at low radio frequencies.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126018012","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814396
M. Bevacqua, S. Zumbo, T. Isernia
In this contribution some recent advances in field intensity shaping paradigm are introduced and discussed, with particular emphasis on biomedical applications. Attention is focused on the design of the complex excitations feeding a biomedical array applicator such to ensure uniform and maximum field intensity distribution inside a given region of interest, while keeping it under control in some other regions. In particular, a smart procedure for the selection of the optimal phase shifts underlying multi control points-based approaches is introduced. Note that this procedure also plays a key role in other relevant non biomedical applications, including satellite and radio communications, as well as in antenna array synthesis theory.
{"title":"Some Improvements to Field Intensity Shaping for Biomedical Applications: Preliminary results","authors":"M. Bevacqua, S. Zumbo, T. Isernia","doi":"10.23919/AT-AP-RASC54737.2022.9814396","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814396","url":null,"abstract":"In this contribution some recent advances in field intensity shaping paradigm are introduced and discussed, with particular emphasis on biomedical applications. Attention is focused on the design of the complex excitations feeding a biomedical array applicator such to ensure uniform and maximum field intensity distribution inside a given region of interest, while keeping it under control in some other regions. In particular, a smart procedure for the selection of the optimal phase shifts underlying multi control points-based approaches is introduced. Note that this procedure also plays a key role in other relevant non biomedical applications, including satellite and radio communications, as well as in antenna array synthesis theory.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123766839","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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