2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)最新文献

{"title":"Modeling of Near-Field to Far-Field Propagator Based on the Jefimenko's Equations","authors":"A. Baev, Y. Kuznetsov, A. Gorbunova, M. Konovalyuk, J. Russer","doi":"10.1109/ICEAA.2019.8879083","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879083","url":null,"abstract":"Estimation of statistical characteristics for radiated electromagnetic emissions caused by PCB can be implemented by statistical signal processing of time domain signals measured by near-field scanning system. The relation between the source signal and the signals measured by the near-field probe at each scanning point can be modelled by an impulse response describing linear transformation of the source signal. In this paper modeling procedure for near-field to far-field propagator based on Jefimenko's equations is presented. Synchronized impulse responses can be used for computer aid prediction of the spatial-time evolution of the cyclostationary characteristics in the environment surrounding the PCB. Verification of the described measurement procedure was implemented by comparison of the calculated evolution of the electric field strength lines with the dipole radiation. The 2D periodic ACF of the far-field shows the cyclostationary properties similar to the properties of initial random bit sequence.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131297158","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}

{"title":"Wave-Particle Interactions in the Earth's Magnetosphere","authors":"D. Baker","doi":"10.1109/ICEAA.2019.8879281","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879281","url":null,"abstract":"Features of the Earth's magnetosphere such as the third radiation belt (or “storage ring”) have been a major observational achievement of the Radiation Belt Storm Probes program (renamed the “Van Allen Probes” mission in November 2012). A goal of that program has been to understand more thoroughly how high-energy electrons are accelerated deep inside the radiation agents due to various wave-particle interactions. Van Allen Probes studies have demonstrated that electrons up to energies over 10 megaelectron volts (MeV) can be produced over broad regions of the outer Van Allen zone on timescales of minutes to a few hours. The key to such rapid acceleration is the interaction of “seed” populations of ∼10 to ∼20 keV electron (and subsequently higher energies) with electromagnetic waves in the lower band whistler-mode chorus frequency range. Extended studies of Van Allen Probes data show that “source” electrons (in a typical energy range of one to a few tens of keV energy) produced by magnetospheric substorms play a crucial role in amplifying the chorus waves in the magnetosphere. It is clear that these chorus waves then rapidly heat and accelerate the tens to hundreds of keV seed electrons that are injected by substorms into the outer Van Allen zone. Thus, we often see that geomagnetic activity driven by strong solar storms (coronal mass ejections, or CMEs) almost inexorably leads to ultra-relativistic electron production through the intermediary step of waves produced during intense magnetospheric substorms. More generally, wave-particle interactions are of fundamental importance over a broad range of energies and in virtually all regions of the magnetosphere. We provide in this presentation a summary of many of the wave modes and particle interactions that have been studied in recent times.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128866797","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}

{"title":"Swarm-E observations of natural and stimulated emissions in the topside ionosphere","authors":"A. Yau, H. G. James, G. W. Perry, R. Langley, P. Bernhardt, C. Siefring","doi":"10.1109/iceaa.2019.8879171","DOIUrl":"https://doi.org/10.1109/iceaa.2019.8879171","url":null,"abstract":"Swarm-E (formerly CASSIOPE Enhanced Polar Outflow Probe, e-POP) was launched in September 2013 into an elliptical polar orbit (325–1500 km, 81° inclination), and is currently in its sixth year of operation (and second year of operation as an integral part of the Swarm constellation). One of its science thrusts is to investigate the microphysics of radio-wave propagation and wave-plasma interaction processes in the topside ionosphere [1], using its trio of radio science instruments to perform a variety of unique active experiments and passive observations in coordination with ground facilities and other spacecraft.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123322428","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}

{"title":"An Effective Solution for Designing Wideband 3-layer D-band Transmitarrays in PCB Technology","authors":"F. F. Manzillo, A. Clemente, J. González-Jiménez","doi":"10.1109/ICEAA.2019.8879063","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879063","url":null,"abstract":"In this contribution, the design and experimental validation of a fixed-beam transmitarray operating in the D-band (110–170 GHz) are presented. The proposed flat lens is suitable for standard PCB manufacturing and features three-layer unit cells achieving a 3-bit phase quantization. The cells leverage different coupling mechanisms among receiving and transmitting elements to cover a wide frequency band of 50 GHz (35.3%, 51 GHz) with low transmission loss and phase errors. A $40 times 40$ broadside transmitarray has been optimized to attain a gain between 30 dBi and 33 dBi over a 30-GHz bandwidth when fed by a 10-dBi source. The measured −1-dB relative bandwidth of 11.7% outperforms state-of-the-art designs in D-band relying on more complex technologies.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121405965","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}

{"title":"High Frequency Modeling of PCB Interconnects with the Thin Wire Method: some Applications Test Cases","authors":"A. Guéna, F. Costa, Benoît Goral","doi":"10.1109/ICEAA.2019.8879010","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879010","url":null,"abstract":"Due to the miniaturization of High Speed PCB design, and the application of carbon nanotubes (CNT), high frequency modeling of 3D electrical interconnects is fundamental to reduce the interference of common mode noise due to the crosstalk and radiation mechanisms. This paper describes a new high frequency extension of equivalent circuit approach named “Thin Wire Method” mainly based on RLC electrical decomposition into a cylindrical equivalent representation of PCB topology [6]. This equivalent electrical modeling provides an efficient EMC analysis of planar and multilayered board circuit configurations; and consequently, it can be extended to model the total losses of electrical interconnect of high speed design at high frequency band, more several Gigahertz [4], [5]. A theoretical description of these electrical losses composed of three main electrical parameters: metallic, dielectric and radiated terms will be focused, and implemented in the Thin Wire Method, and the equivalent cylindrical representation of microstrip [9]. On the other hand, a specific discussion about the electrical contribution of the radiated term introduced in an electrical representation by [10] will be given. Few electrical applications test cases will be simulated and compared with a different simulation methodology developed in [11] in order to estimate simulation time and computing resources gain. Finally the special case of nonuniform transmission lines using this equivalent cylindrical modeling approach will be provided, and discussed regarding the previous research works based on the perturbative analysis [12]","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126567735","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}

{"title":"A Far-Field Transformation Procedure for Monostatic Linear Sampling Method Imaging","authors":"H. Alqadah, Matthew J. Burfeindt","doi":"10.1109/ICEAA.2019.8879380","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879380","url":null,"abstract":"In this work we present a preliminary investigation of the Linear Sampling Method (LSM) for inverse scattering with monostatic collection geometries. Qualitative methods like the LSM rely on dense multistatic data which is costly and infeasible in some applications. Here we attempt to leverage the redundant nature of multistatic data through an interpolation and prediction scheme based on leveraging intersections of support between monostatic and bistatic support regions in K-space. This is then followed by a matrix completion algorithm for predicting the remainder of the bistatic apertures. Preliminary proof of concept of the technique is presented using simulated scatter data.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122195133","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}

{"title":"Electric Beam-Steering Metamaterial Leaky-Wave Antenna","authors":"Nima Javanbakht, B. Syrett, R. Amaya, J. Shaker","doi":"10.1109/ICEAA.2019.8879060","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879060","url":null,"abstract":"A novel reconfigurable leaky-wave antenna is presented in this paper. The proposed structure is based on a half-mode substrate integrated waveguide. The antenna scans space electronically. This is accomplished by introducing novel metamaterial circular cells on the antenna. Sweeping the bias voltage causes the variation in surface impedance which results in beam-steering. The operating frequency is chosen as 28.5 GHz. The width, length, and height of the antenna are 45 mm, 69 mm, and 0.3 mm, respectively. Low profile, electronic beam-steering capability, and high gain of the proposed antenna make it a suitable candidate for 5G wireless networks.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122302411","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}

{"title":"An Accurate and Stable Finite Element Method for Self-Heating Effects Simulation of Semiconductor Devices","authors":"Da-Miao Yu, Xiao-Min Pan, X. Sheng","doi":"10.1109/ICEAA.2019.8879296","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879296","url":null,"abstract":"In this paper, an accurate and stable control volume finite element method with Scharfetter-Gummel upwind effects (CVFEM-SG) has been employed to numerically simulate the self-heating effects of semiconductor devices. The thermodynamic drift-diffusion model is utilized to model the self-heating effects. The numerical experiments show that the proposed approach is accurate and robust while alleviates the requirement on the quality of the mesh compared with the traditional finite volume method.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115288320","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}

{"title":"Energetic electrons upstream and downstream of a current-free double layer (CFDL) in an inductively coupled helicon plasma","authors":"L. Buschmann, N. Gulbrandsen, Å. Fredriksen","doi":"10.1109/ICEAA.2019.8878951","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8878951","url":null,"abstract":"CFDLs are sharp potential drops that can form self-consistently without external current forcing, in helicon plasma sources with an expanding magnetic field. The potential drop typically occurs in the transition between the source and the diffusion chamber, and as a result, an ion beam can be observed in the downstream region of the CFDL. As no external current is applied, the free electrons have to play an important role in balancing the ion beam current. To better understand this role, it is important to obtain information about the electrons and their energy distribution as well as that of the ions. We report on the measurements of the ion energy distributions and high-energy tail of electrons in the inductively coupled helicon plasma of the Njord device, in both upstream and downstream regions of the CFDL. The measurements were carried out by means of a retarding field energy analyzer (RFEA) set to ion and electron collection, respectively. In the electron collection mode, electrons with energies large enough to overcome the potential barrier between the grounded aperture of the probe and the plasma potential Vp can be detected. In a former experiment [1] a high-energy population of electrons in the downstream region of the CFDL was found, most pronounced at the magnetic field lines mapping from the outer radial region of the source onto the downstream radial position where they intersect the radially moving probe. Here a high-density and high-energy population at temperatures about 10 eV was found. This electron population originates in the source region where electrons are directly heated in the RF field, and they are energetic enough to cross the potential drop and ionize the downstream atoms, giving rise to a small increase in the plasma density. However, also a tenuous plateau of even higher energy electrons was observed within the region where the ion beam. On the other hand, the tail of the bulk electrons that reached the RFEA collector had temperatures of 5–6 eV, in agreement with Langmuir probe results. In more recent experiments, comprehensive 2D measurements in the plasma source (upstream region) of the ion and electron distributions were obtained. In the source, Vp is typically about 70 V, which presents a taller potential barrier for electrons than in the downstream region, where the plasma potential is around 50 V. However, electrons could still be detected, but with a temperature of about 10 eV. The density of these electrons appears highest in the regions of lowest plasma potential > 3 cm outside the center of the column, as is to be expected from the lower potential barrier imposed on the electrons.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115625566","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}

{"title":"Automated Design of Microstrip Patch Antenna Using Ant Colony Optimization","authors":"Lam Vu Tung, Linh Ho Manh, Chien Dao Ngoc, M. Beccaria, P. Pirinoli","doi":"10.1109/ICEAA.2019.8879031","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879031","url":null,"abstract":"Swarm Intelligence (SI) is a concept used by artificial intelligence to solve decision making problems. An Ant Colony Optimization (ACO) algorithm is inspired by SI algorithms uses multiple agents that interact locally and simple rules to find a globally valid solution. A version of ACO is implemented to automatically design the microstrip patch antenna. The experimental antenna is designed operates at 3.5 GHz with bandwidth 50 – 170 MHz.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116751280","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}