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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Journal ArticleDOI
Analytical formulas for the unshielded magnetoresistive head
S. Shtrikman,David R. Smith +1 more
TL;DR: In this paper, an idealized unshielded magnetoresistive (UMR) head is analyzed by simplifying approximations which retain the essential physics, deriving simple equations describing the bias magnetization distribution, and the frequency response.
Proceedings ArticleDOI
A novel technique for the determination of the radiation patterns of medium gain antennas from scalar intensity measurements
TL;DR: In this article, indirect holography can be extended to enable the radiation patterns of medium gain antennas to be obtained in a simple and inexpensive manner, by sampling at spacing much less than half wavelength and electronically introducing a phase shift between each sample.
Proceedings ArticleDOI
Near-field SAR imaging with dynamic metasurface antennas using an adapted range migration algorithm
Aaron V. Diebold,Laura Pulido-Mancera,Timothy Sleasman,Michael Boyarsky,Mohammadreza F. Imani,David R. Smith +5 more
TL;DR: The adaptation of the RMA to near field imaging using a DMA as central hardware of a SAR system is demonstrated, and the effects of this approximation on the resulting image quality are discussed.
Journal ArticleDOI
Validation of gyrokinetic simulations in NSTX and projections for high-k turbulence measurements in NSTX-U
J. Ruiz Ruiz,J. Ruiz Ruiz,W. Guttenfelder,Anne White,Nathan Howard,Jeff Candy,Yang Ren,David R. Smith,Nuno Loureiro,Christopher Holland,Calvin Domier +10 more
TL;DR: Barchfeld et al. as discussed by the authors showed that electron thermal transport can be entirely explained by electron-scale turbulence fluctuations driven by the electron temperature gradient mode (ETG), both in conditions of strong and weak ETG turbulence drive.
Proceedings ArticleDOI
Imaging dielectric objects from scalar intensity patterns by means of indirect holography
TL;DR: In this article, an indirect microwave holographic technique for the reconstruction of complex scattered fields and the imaging of objects from a single holographic intensity pattern is described, which dispenses with the need for expensive phase measuring equipment.