Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Jonah N. Gollub"'
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract Mobile devices, climate science, and autonomous vehicles all require advanced microwave antennas for imaging, radar, and wireless communications. We propose a waveguide-fed metasurface antenna architecture that enables electronic beamsteerin
Externí odkaz:
https://doaj.org/article/79fb92753d534d6abd7dd97b5db681c5
Publikováno v:
IEEE Access, Vol 8, Pp 36829-36835 (2020)
We demonstrate that dynamic metasurface apertures (DMAs) are capable of generating a multitude of highly uncorrelated speckle patterns in a typical residential environment at a single frequency. We use a DMA implemented as an electrically-large cavit
Externí odkaz:
https://doaj.org/article/17d083b2d47641ecbcfe08e516527e28
Autor:
Alexander X. Oesterling, Mohammadreza F. Imani, Oren S. Mizrahi, Jonah N. Gollub, David R. Smith
Publikováno v:
IEEE Access, Vol 8, Pp 222496-222505 (2020)
Sensing motion and distinguishing its source as human or nonhuman, with high precision, has tremendous applications in a variety of areas from health monitoring to energy efficiency. One strategy to achieve this goal is to detect the small motion of
Externí odkaz:
https://doaj.org/article/1d84a0f158084bdca8808f33e155252a
Publikováno v:
IEEE Access, Vol 7, Pp 159674-159687 (2019)
We present a ray-tracing analysis of a smart motion detector based on a dynamically reconfigurable metasurface antenna (DMA). A DMA consists of an array of metamaterial radiators excited by a single-port waveguide or cavity. By incorporating simple s
Externí odkaz:
https://doaj.org/article/f70bacccff0c47128802d4e904c49892
Publikováno v:
IEEE Access, Vol 5, Pp 9911-9918 (2017)
We design and numerically analyze a coherent computational imaging system that utilizes a sparse detector array of planar, frequency-diverse, metasurface antennas designed to operate over the W-band frequency range (75-110 GHz). Each of the metasurfa
Externí odkaz:
https://doaj.org/article/84c873c6946d4fe99689a5a57a53cfbc
Publikováno v:
IEEE Access, Vol 5, Pp 15055-15065 (2017)
We present numerical simulations of the near-field focusing capabilities of a dynamically reconfigurable holographic metasurface aperture. The aperture consists of a parallel-plate waveguide in which the upper plate is patterned with a number of meta
Externí odkaz:
https://doaj.org/article/2feb7f8eb3ef4483b6492821852d63d3
Autor:
Okan Yurduseven, Jonah N. Gollub, Kenneth P. Trofatter, Daniel L. Marks, Alec Rose, David R. Smith
Publikováno v:
IEEE Access, Vol 4, Pp 2488-2497 (2016)
We demonstrate a technique for calibrating a frequency-diverse, multistatic, computational imaging system. A frequency-diverse aperture enables an image to be reconstructed primarily from a set of scattered field measurements taken over a band of fre
Externí odkaz:
https://doaj.org/article/f3abde7c334f43238e197eb98b546890
Publikováno v:
IEEE Access, Vol 4, Pp 5436-5451 (2016)
We present the design and simulation of a frequency-diverse aperture for imaging of human-size targets at microwave wavelengths. Predominantly relying on a frequency sweep to produce diverse radiation patterns, the frequency-diverse aperture provides
Externí odkaz:
https://doaj.org/article/6f4b948c738241d4bd2fd1b6a268e83c
Publikováno v:
IEEE Access, Vol 7, Pp 159674-159687 (2019)
We present a ray-tracing analysis of a smart motion detector based on a dynamically reconfigurable metasurface antenna (DMA). A DMA consists of an array of metamaterial radiators excited by a single-port waveguide or cavity. By incorporating simple s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb5c7854cca2d576ef12afad6d3e9ad0
https://ieeexplore.ieee.org/document/8883251/
https://ieeexplore.ieee.org/document/8883251/
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Mobile devices, climate science, and autonomous vehicles all require advanced microwave antennas for imaging, radar, and wireless communications. We propose a waveguide-fed metasurface antenna architecture that enables electronic beamsteering from a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0467d514dd4dcfe3bbe0836ac33732ca
https://pubmed.ncbi.nlm.nih.gov/33633119
https://pubmed.ncbi.nlm.nih.gov/33633119