Metasurface Antennas for Synthetic Aperture Radar
| dc.contributor.advisor | Smith, David R | |
| dc.contributor.author | Boyarsky, Michael | |
| dc.date.accessioned | 2020-02-10T17:28:04Z | |
| dc.date.available | 2020-07-10T08:17:18Z | |
| dc.date.issued | 2019 | |
| dc.department | Electrical and Computer Engineering | |
| dc.description.abstract | Synthetic aperture radar offers unparalleled satellite imaging capabilities for planetary observation. Future systems will realize high resolution with near-real-time revisit rates by using coordinated satellites, but their development has been slowed by the high cost, high power draw, and substantial weight associated with existing antenna technology. Metasurface antennas - a lightweight, low cost, and planar alternative - can address these challenges to make large scale, multi-satellite systems practical. In this work, an electronically steered metasurface antenna prototype is developed for synthetic aperture imaging. A cohesive approach to modeling and design led to a Nyquist sampled layout which minimizes inter-element coupling and suppresses grating lobes. Experimental measurements validate its ability to steer a beam in 2D across a wide bandwidth. Robust performance and favorable hardware characteristics have poised metasurface antennas to affect many microwave industries and to facilitate multi-satellite constellations for spaceborne synthetic aperture radar. | |
| dc.identifier.uri | ||
| dc.subject | Electrical engineering | |
| dc.subject | Antennas | |
| dc.subject | Metamaterials | |
| dc.subject | Metasurface antennas | |
| dc.subject | Microwave imaging | |
| dc.subject | Synthetic aperture radar | |
| dc.title | Metasurface Antennas for Synthetic Aperture Radar | |
| dc.type | Dissertation | |
| duke.embargo.months | 4.931506849315069 |
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