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Implementation of method for operating multiple high frequency surface wave radars on a common carrier frequency
High frequency surface wave radar common frequency doppler processing ionosphere
2010/10/12
The increasing use of High Frequency Surface Wave Radar (HFSWR) for the surveillance of coastal regions is faced with the problem of limited channel availability in the electromagnetic spectrum. Thus,...
Modeling and simulation strategies in high frequency surface wave radars
Radar HF radar surface wave HF radar HFSWR propagation noise clutter RCS
2010/10/12
Surface Wave High Frequency Radars (SWHFR) are taken into account in the content of modeling and simulation challenges. Examples related to multi-mixed path surface wave propagation, radar cross secti...
Online Learning Resource for Smooth Transition from High School to Engineering Education
Online learning Engineering mathematics Modeling and applications
2009/7/28
Although high school mathematics curriculum documents in Ontario, Canada have, for the past two decades, made calls for classroom practices involving both modeling and applications, students still exp...
ABB to Upgrade Control and Valve Cooling System for High Voltage Direct Current Station
cooling systems
2007/2/2
30 Jan 2007，ABB announced that it has recently been selected by the Public Service Company of New Mexico to upgrade the control and the valve cooling systems of their existing ABB high voltage direct ...
Material Characterization of High Dielectric Constant Polymer–Ceramic Composite for Embedded Capacitor to RF Application
Embedded capacitor Integral passives Polymer–ceramic nano-composite Breakdown voltage Leakage current High dielectric constant RF frequency
2010/12/7
Embedded capacitor technology can improve electrical performance and reduce assembly cost compared with traditional discrete capacitor technology. Polymer–ceramic composites have been of great interes...
Evaluation of Meshed Reference Planes for High Performance Applications
PCB/MCM reference plane modeling simulation CAD design
2010/12/9
The actual generations of integrated circuits are characterized, inter alia, by very high frequencies or very high speeds. The dramatic evolution ofthe semiconductor's technology establishes a greater...
New High-Speed a-Si/c-Si- and a-SiC/c-Si-Based Switches
a-Si/c-Si- and a-SiC/c-Si-Based VBF
2010/12/13
The electrical and optical characteristics of the new high-speed Al/a-Si/c-Si(p)/c-Si(n+)/Al and Al/a- SiC/c-Si(p)/c-Si(n+)/Al optically controlled switches are presented in this paper. These switches...
Characteristics of MOCVD-Grown High-Quality CdTe Layers on GaAs Substrates
MOCVD-Grown High-Quality CdTe Layers GaAs Substrates
2010/12/14
CdTe epitaxial layers are grown successfully on a (100)-GaAs substrate by metalorganic chemical vapor deposition (MOCVD) using dimethylcadrnium (DMCd) and diethyltelluride (DETe) as alkyl sources. The...
A Cumulative Study of Performance Degrading Factors in a High Capacity Cellular Zone System
Performance Degrading Factors a High Capacity Cellular Zone System
2010/12/14
In high capacity cellular zone systems, cell size is reduced considerably: hence cells may be re-defined as microcells. The key point in microcell interference modeling is that the desired signal, as ...
New High Voltage Cathode Materials for Rechargeable Lithium Batteries
New High Voltage Cathode Materials Lithium Batteries
2010/12/14
In the context of this article, high voltage cathode will refer to those cathodes that require charging above 4 V vs. Li. Typical examples are the lithiated transition metal oxides mentioned above. In...
High Injection Effects on Solar Cell Performances
High Injection Effects Solar Cell Performances
2010/12/14
Experiments are performed on solar cells under concentrated sunlight in order to explore fundamental physical processes with high injection conditions. Saturation effects are observed on the cell open...
Magnetic flux can penetrate a type-II superconductor in the form of flux-lines or Abrikosov vortices, each of which carry a quantum of flux and arrange in a more or less regular triangular lattice. Un...
A Thick-Film Segmented-Resistor Structure for High Trimfactors
A Thick-Film Segmented-Resistor Structure High Trimfactors
2010/12/21
This communication reports the preliminary experimental results on a triple-segment
thick-film resistor structure. This structure, first reported by Karlskov Jensen
comprises two or more partly over...
High Temperature Oxidized SnO2 Films Prepared by Reactive Sputtering
d.c. reactive ion an argon atmosphere oxygen partial pressures
2010/12/21
Undoped and Sb-doped tin oxide films were prepared by d.c. reactive ion sputtering in an argon atmosphere with oxygen partial pressures ranging from 0 to 50%. The films were anneled in oxygen in the t...
The Present Situation on Hybrid Techniques in Hungary Especially in High Frequency Applications
The Present Situation Hybrid Techniques Hungary High Frequency Applications
2010/12/27
The Present Situation on Hybrid Techniques in Hungary Especially in High Frequency Applications.