D
David R. Smith
Researcher at Duke University
Publications - 891
Citations - 102589
David R. Smith is an academic researcher from Duke University. The author has contributed to research in topics: Metamaterial & Antenna (radio). The author has an hindex of 110, co-authored 881 publications receiving 91683 citations. Previous affiliations of David R. Smith include Brunel University London & Princeton University.
Papers
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Proceedings ArticleDOI
3D Microwave Imaging for Medical and Security Applications
TL;DR: This work describes how the indirect holographic approach can be used to reconstruct 3D images of objects from a single scalar 2D holographic intensity pattern.
Proceedings ArticleDOI
A transparent meshed solar monopole antenna for UWB applications
TL;DR: In this paper, a meshed circular monopole with a polycrystalline silicon (poly-Si) solar cell operating as an RF ground plane in addition to its photovoltaic function is demonstrated.
Journal ArticleDOI
Enhanced pedestal H-mode at low edge ion collisionality on NSTX
D. J. Battaglia,W. Guttenfelder,R.E. Bell,Ahmed Diallo,Nathaniel Ferraro,E.D. Fredrickson,S.P. Gerhardt,S.M. Kaye,R. Maingi,David R. Smith +9 more
TL;DR: In this article, the edge ion collisionality becomes sufficiently small that a positive feedback interaction occurs between a reduction in the ion neoclassical energy transport and an increase in the particle transport from pressure-driven edge instabilities.
Journal ArticleDOI
Grating Lobe Suppression in Metasurface Antenna Arrays with a Waveguide Feed Layer
TL;DR: In this paper, a compensatory waveguide feed layer is proposed to suppress grating lobes in metasurface antennas, which can result from an unwanted periodic magnitude response that accompanies an ideal phase pattern.
Journal ArticleDOI
Exploring the regime of validity of global gyrokinetic simulations with spherical tokamak plasmas
Yang Ren,W. X. Wang,W. Guttenfelder,S.M. Kaye,J. Ruiz-Ruiz,Stephane Ethier,R.E. Bell,B.P. LeBlanc,E. Mazzucato,David R. Smith,Calvin Domier,Howard Yuh +11 more
TL;DR: Wang et al. as mentioned in this paper used the electrostatic global particle-in-cell gyrokinetic Tokamak simulation (GTS) code to predict the performance of ITER and future magnetic confinement devices.