224,716 resources related to Propagation
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The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.
2021 IEEE Photovoltaic Specialists Conference (PVSC)
Photovoltaic materials, devices, systems and related science and technology
All fields of satellite, airborne and ground remote sensing.
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
APEC focuses on the practical and applied aspects of the power electronics business. Not just a power designer’s conference, APEC has something of interest for anyone involved in power electronics including:- Equipment OEMs that use power supplies and converters in their equipment- Designers of power supplies, dc-dc converters, motor drives, uninterruptable power supplies, inverters and any other power electronic circuits, equipments and systems- Manufacturers and suppliers of components and assemblies used in power electronics- Manufacturing, quality and test engineers involved with power electronics equipment- Marketing, sales and anyone involved in the business of power electronic- Compliance engineers testing and qualifying power electronics equipment or equipment that uses power electronics
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
The IEEE Reviews in Biomedical Engineering will review the state-of-the-art and trends in the emerging field of biomedical engineering. This includes scholarly works, ranging from historic and modern development in biomedical engineering to the life sciences and medicine enabled by technologies covered by the various IEEE societies.
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014
Radio wave propagation test is introduced in this paper. It was held in the sea area near Qingdao city, and involved different band including L band, S band, C band and X band. Using the path loss model given in the International Telecommunication Union (ITU) recommendation propagation 1411, we derived the characteristic parameters such as path loss exponent and shadow ...
1989 Sixth International Conference on Antennas and Propagation, ICAP 89 (Conf. Publ. No.301), 1989
1995 Ninth International Conference on Antennas and Propagation, ICAP '95 (Conf. Publ. No. 407), 1995
IEEE Transactions on Antennas and Propagation, 1998
The wide-angle split-step parabolic equation (PE) algorithm is used to model electromagnetic wave propagation over general inhomogeneous terrain up to a height h. The PE-computed fields at h are then projected onto a complete Gabor basis from which we effect Gaussian beam propagation at altitudes greater than h. The Gaussian beams can be propagated through general inhomogeneous media, devoid of ...
2017 International Symposium on Antennas and Propagation (ISAP), 2017
Communication and data transfer demands are growing fast in last few decades. In order to obtain higher data transfer, it is necessary to determine proper antenna placement in a wireless system. In this paper, we research propagation in tropical environment and L-Band frequency by conducting distance and high variation measurement at frequency 1.8 GHz and 2.4 GHz. The received power ...
IMS MicroApp: Unexpected effects of conductor profile on the propagation constant
Microwave PCB Structure Selection Microstrip vs. Grounded Coplanar Waveguide: MicroApps 2015 - Rogers Corporation
Heritage Circle - Reddy
Brooklyn 5G - 2015 - George MacCartney - MmWave Channel Models - A Unified Approach for 5G Standardization and Modern Design
mmWave for Future Public Safety Communications - Michele Zorzi - 5G Technologies for Tactical and First Responder Networks 2018
Millimeter Wave Mobile Communications for 5G Cellular: It Will Work!
A 30-MHz-to-3-GHz CMOS Array Receiver with Frequency and Spatial Interference Filtering for Adaptive Antenna Systems: RFIC Industry Showcase
New Radio Phase 1 and 2 - Future X Radio Panel - Brooklyn 5G Summit 2018
Designing Reconfigurable Large-Scale Deep Learning Systems Using Stochastic Computing - Ao Ren: 2016 International Conference on Rebooting Computing
IEEE Wireless Communication Engineering Technologies (WCET) Certification Program
2011 IEEE Awards James H. Mulligan, Jr. Education Medal - Raj Mittra
Radio wave propagation test is introduced in this paper. It was held in the sea area near Qingdao city, and involved different band including L band, S band, C band and X band. Using the path loss model given in the International Telecommunication Union (ITU) recommendation propagation 1411, we derived the characteristic parameters such as path loss exponent and shadow fading for different frequencies. The statistic propagation model can be used for providing a reference for ship information communication.
The wide-angle split-step parabolic equation (PE) algorithm is used to model electromagnetic wave propagation over general inhomogeneous terrain up to a height h. The PE-computed fields at h are then projected onto a complete Gabor basis from which we effect Gaussian beam propagation at altitudes greater than h. The Gaussian beams can be propagated through general inhomogeneous media, devoid of failures at caustics and shadow boundaries (as befalls ray tracing). The accuracy of the Gaussian beam algorithm is demonstrated via two realistic examples: (1) low-frequency (HF) ionospheric propagation with application to over-the-horizon radar and (2) near-grazing high-frequency propagation for communication or surveillance applications. In the context of these examples, we discuss relevant numerical issues associated with the hybrid algorithm from which general advantages and disadvantages are addressed.
Communication and data transfer demands are growing fast in last few decades. In order to obtain higher data transfer, it is necessary to determine proper antenna placement in a wireless system. In this paper, we research propagation in tropical environment and L-Band frequency by conducting distance and high variation measurement at frequency 1.8 GHz and 2.4 GHz. The received power level decreases as the distance increases. Some discrepancies come from obstacles around the measurement set up. These results can contribute to find out the maximum channel capacity by considering an optimum antenna configuration based on received power levels.
In high-frequency (HF) hybrid sky-surface wave system, owing to the ionosphere propagation mode, the echo spectrum of hybrid sky-surface wave propagation channel are extremely complex in spatial, time, and frequency domains, which seriously affect radar performance. Using the newly-developed hybrid sky- surface wave experimental system and the oblique incidence sounders (OIS), the echo spectra for hybrid sky-surface wave propagation channel and the ionospheric propagation paths are obtained separately. The typical examples of echo spectra via the different propagation paths are analyzed. For ionospheric one-path propagation, the Range-Doppler spectra include sea clutter and ionospheric direct wave via one mode, which is conductive for target detection and location. For ionospheric multi-path propagation, the echoes via multi- path interact with each other, and the qualities of spectra reduce, which would seriously affect ship target detection. It is found that the propagation mode of echo spectra vary complicatedly with frequency and ionosphere state. This research could provide important supporting functions for operating frequency selection, target detection, and location.
Evaporation duct is an anomalous mechanism of transhorizon propagation in marine and coastal regions. In order to better understand the characteristics of signal fading, a C band signal transhorizon propagation experiment was carried out with a 107 km path length over the Bohai Sea of China. Using an iron tower with meteorological and oceanographic (METOC) sensors at multiple altitudes, a direct diagnostic method of evaporation duct is presented. The dependence of signal strength on evaporation duct height, antenna height, and METOC parameters is analysed. The experimental results indicate that the signal strength tends to be linearly dependent on the evaporation duct height when the transmitter and receiver antennas are submerged within the duct layer. Normally, the signal strength is stronger when the relative humidity is lower. Stronger signal strength tends to occur under near-neutral or stable atmospheric conditions or when the air–sea temperature difference is higher. The results indicate that the signal strength distribution of fast fading is close to Rayleigh distribution, and the probability density of fade slope is symmetric at 0 dB/s. These results have important implications for the design of ducting communications system.
At present, the theory of troposcatter propagation mechanism is still imperfect. In this paper, the tropospheric scatter experiment is introduced, which path length is 56.2km, in order to further study the mechanism of turbulence incoherent scatter. The fading and distribution characteristics of the signal are analyzed according to the experiment data. Meanwhile, the path loss of experiment is also compared with the result of ITU-R P.617-4.
This paper presents a 18 GHz cm-Wave measurement-based campaign and path-loss analysis and a comparison with the traditional Alpha-Beta (AB) and the Close- in (CI) propagation models. A suburban scenario in the city of Belo Horizonte, Minas Gerais, Brazil, was considered and measurements were done considering LOS and NLOS conditions. The recorded samples data were processed and an outdoor propagation path loss was obtained, and then fitted in a curve to compare with the reference propagation models. It was observed a path loss exponent of 4.737 for the AB model, an exponent of 2.923 and 2.472 for the CI model with reference distances of 1 m and 2.5 m, respectively. A Beam Combining Gain (BCG) analysis was also performed and a mean value of 3.4 dB was obtained when using the 3 strongest components of two measurement points.
Relaying technology - a key technical enhancement in 3GPP LTE-Advanced (3rd Generation Partnership Project Long Term Evolution - Advanced) - has attracted much research interest over the last few years. However, propagation path loss models dedicated to relaying systems are yet to be properly validated. Moreover, the impact of relay antenna height on propagation channel has not yet been adequately studied. This paper presents a measurement-based study which aims to analyze the impact of relay antenna height on path loss channel models. The analysis results demonstrate that BS-RS (Base Station - Relay Station) link path loss decreases with the increase in relay antenna height. Moreover, different propagation models which could be applied for BS-RS link are verified. The analyses show that these models are not completely adequate for relaying deployment. Finally, a new propagation model for relaying deployment which takes into account the impact of relay antenna height is proposed.
The purpose of this guide is to describe the measurement principles of the electrical properties of naturally occurring solid materials, although it will also serve as a guide for the measurement of any solid material.
This recommended practice establishes processes for the measurement of the electromagnetic scattering from objects. It is written for the personnel responsible for the operation of test ranges, and not for the design of such ranges. It recommends procedures for testing and documenting the quality of the measurement system, for calibrating the measurement system, for carrying out the radar scattering measurements, ...
Delete some obsolete terms, add new terms, refine language in some existing terms.
Delete some obsolete terms, add new terms, refine language in some existing terms.