Now showing items 21-40 of 102

    • Experimental and Theoretical Validation for the Incremental Theory of Diffraction 

      Erricolo, Danilo; Canta, Stefano M.; Hayvaci, Harun T.; Albani, Matteo (Institute of Electrical and Electronics Engineers, 2008-08)
      Experimental and theoretical approaches to verify the validity of the incremental theory of diffraction (ITD) are considered. After providing a simple recipe for the application of the ITD, three geometries are examined ...
    • Exact 2-D scattering from a slot in a ground plane backed by a semielliptical cavity and covered with a multilayer isorefractive diaphragm 

      Canta, Stefano M.; Erricolo, Danilo (American Geophysical Union, 2008-12-13)
      A semielliptical channel flush-mounted under a metal plane and slotted along the interfocal distance of its cross section is separated from the half-space above by a multilayer diaphragm. The cavity, the diaphragm, and ...
    • New method to obtain small parameter power series expansions of Mathieu radial and angular functions 

      Larsen, Todd M.; Erricolo, Danilo; Uslenghi, Piergiorgio L.E. (American Mathematical Society, 2009-01)
      Small parameter power series expansions for both radial and angular Mathieu functions are derived. The expansions are valid for all integer orders and apply the Stratton-Morse-Chu normalization. Three new contributions are ...
    • Radio Frequency Tomography for Tunnel Detection 

      Lo Monte, Lorenzo; Erricolo, Danilo; Soldovieri, Francesco; Wicks, Michael C. (Institute of Electrical and Electronics Engineers, 2010-03)
      Radio frequency (RF) tomography is proposed to detect underground voids, such as tunnels or caches, over relatively wide areas of regard. The RF tomography approach requires a set of low-cost transmitters and receivers ...
    • Pose Estimation from Multiple Cameras Based on Sylvester's Equation 

      Chong, Chen; Dan, Schonfeld (Elsevier, 2010-06)
      In this paper, we introduce a method to estimate the object's pose from multiple cameras. We focus on direct estimation of the 3D object pose from 2D image sequences. Scale-Invariant Feature Transform (SIFT) is used to ...
    • RF Tomography for Below-Ground Imaging of Extended Areas and Close-in Sensing 

      Lo Monte, Lorenzo; Erricolo, Danilo; Soldovieri, Francesco; Wicks, Michael C. (Institute of Electrical and Electronics Engineers, 2010-07-01)
      Three extensions to radio-frequency (RF) tomography for imaging of voids under wide areas of regard are presented. These extensions are motivated by three challenges. One challenge is the lateral wave, which propagates ...
    • Structural and optical characterization of infrared hot electron transistor 

      Jung, Hyeson; Pinsukanjana, Paul; Dutta, Mitra; Choi, Kwong-Kit; Tidrow, Meimei Z. (American Institute of Physics, 2010-08-01)
      We present structural, optical, and transport characterization of long wave infrared hot electron transistor (IHET) based on doped quantum wells of InGaAs/AlGaAs. The atomic resolution images and x-ray diffraction patterns ...
    • A Novel Colocated Cross-Polarized Two-Loop PCB Antenna in the ISM 2.4-GHz Band 

      Elnour, Badria M.; Erricolo, Danilo (Institute of Electrical and Electronics Engineers, 2010-12)
      This letter outlines the design of a colocated cross-polarized two-loop antenna for the ISM 2.4-GHz band. This antenna may be of interest to radar applications in the problem of finding the direction of arrival of a ...
    • Incremental Fringe Formulation for a Complex Source Point Beam Expansion 

      Canta, Stefano M.; Erricolo, Danilo; Toccafondi, Alberto (Institute of Electrical and Electronics Engineers, 2011-05)
      An incremental fringe formulation (IFF) for the scattering by large metallic objects illuminated by electromagnetic complex source points (CSPs) is presented. This formulation has two main advantages. First, it improves ...
    • Interference Channel with Generalized Feedback (a.k.a. with source cooperation): Part I: Achievable Region 

      Yang, Shuang (Echo); Tuninetti, Daniela (Institute of Electrical and Electronics Engineers, 2011-05)
      An Interference Channel with Generalized Feedback (IFC-GF) models a wireless network where the sources can sense the channel activity. The signal overheard from the channel provides information about the activity of the ...
    • Exact Imaging by an Elliptic Lens 

      Akgol, Oguzhan; Erricolo, Danilo; Uslenghi, Piergiorgio L.E. (Institute of Electrical and Electronics Engineers, 2011-06-13)
      The radiation from an isotropic line source located at one of the focal lines of an elliptic cylindrical lens filled with a homogeneous and lossless DNG metamaterial is determined exactly in the frequency domain. This exact ...
    • Photoluminescence and Raman spectroscopy of polycrystalline ZnO nanofibers deposited by electrospinning 

      Sen, Banani; Stroscio, Michael; Dutta, Mitra (Springer Verlag, 2011-06-15)
      The technique of electrospinning offers the advantage of growing nanowires in bulk quantities in comparison with traditional methods. We report optical studies of polycrystalline zinc oxide (ZnO) nanofibers (∼100 nm thick ...
    • New inner and outer bounds for the memoryless cognitive interference channel and some new capacity results 

      Rini, Stefano; Tuninetti, Daniela; Devroye, Natasha (Institute of Electrical and Electronics Engineers, 2011-07)
      The cognitive interference channel is a two-user interference channel in which one transmitter is non-causally provided with the message of the other transmitter. This channel model has been extensively studied in the past ...
    • Piezoelectricity in wurtzite polar semiconductor nanowires: A theoretical study 

      Sen, B.; Stroscio, M.; Dutta, M. (American Institute of Physics, 2011-07-15)
      By considering acoustic phonon mode displacements in nanowires, the piezoelectrically induced electric polarization vector and the associated potential are calculated. For the case of charge-free semiconductor nanowires, ...
    • Design and Modeling of a Miniaturized Substrate Integrated Waveguide Using Embedded SRRs 

      Farzami, Farhad; Majid, Norooziarab; Keyvan Forooraghi (IEEE, 2011-07-25)
      A substrate integrated waveguide (SIW) loaded by embedded split-ring resonators (SRRs) with transversal negative effective permeability is proposed. It is shown that the structure can support propagation of backward waves ...
    • On the Benefits of Partial Channel State Information for Repetition Protocols in Block Fading Channels 

      Tuninetti, Daniela (Institute of Electrical and Electronics Engineers, 2011-08)
      This paper studies the throughput performance of HARQ (hybrid automatic repeat request) protocols over block fading Gaussian channels. It proposes new protocols that use the available feedback bit(s) not only to request a ...
    • Electromagnetic radiation and scattering for a gap in a corner backed by a cavity filled with DNG metamaterial 

      Akgol, Oguzhan; Erricolo, Danilo; Uslenghi, Piergiorgio L. E. (American Geophysical Union, 2011-08)
      A partially covered cavity, or trench, located along the edge of two intersecting metallic walls perpendicular to each other is considered. The cross section of the cavity is a quarter ellipse and is slotted along the ...
    • Fourier magnetic imaging 

      Verduci, T.; Rufo, C.; Berger, A.; Metlushko, V.; Ilic, B.; Vavassori, P. (American Institute of Physics, 2011-08-29)
      We present a methodology for the extraction of the spatial Fourier components of the magnetization profile for an array of nanosized magnetic objects, from diffracted magneto optic Kerr effect measurements. The field dependent ...
    • Radiation From a Line Source Shielded by a Confocal Elliptic Layer of DNG Metamaterial 

      Akgol, Oguzhan; Daniele, Vito G.; Erricolo, Danilo; Uslenghi, Piergiorgio L.E. (Institute of Electrical and Electronics Engineers, 2011-09)
      The two-dimensional problem of electromagnetic radiation from a line source located inside an elliptic-cylinder confocal sheath of double-negative metamaterial is solved exactly by separation of variables. Numerical ...
    • Achievable rate regions and performance comparison of half duplex bi-directional relaying protocols 

      Kim, Sang Joon; Devroye, Natasha; Mitran, Patrick; Tarokh, Vahid (Institute of Electrical and Electronics Engineers, 2011-10)
      In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of a relay. In this paper, we derive achievable rate regions for four new half-duplex ...