
Metamaterial microwave holographic imaging system.
We demonstrate a microwave imaging system that combines advances in metamaterial aperture design with emerging computational imaging techniques. The flexibility inherent to guided-wave, complementary metamaterials enables the design of a planar antenna that illuminates a scene with dramatically varying radiation patterns as a function of frequency. As frequency is swept over the K-band (17.5-26.5 GHz), a sequence of pseudorandom radiation patterns interrogates a scene. Measurements of the return signal versus frequency are then acquired and the scene is reconstructed using computational imaging methods. The low-cost, frequency-diverse static aperture allows three-dimensional images to be formed without mechanical scanning or dynamic beam-forming elements. The metamaterial aperture is complementary to a variety of computational imaging schemes, and can be used in conjunction with other sensors to form a multifunctional imaging platform. We illustrate the potential of multisensor fusion by integrating an infrared structured-light and optical image sensor to accelerate the microwave scene reconstruction and to provide a simultaneous visualization of the scene.
Duke Scholars
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Related Subject Headings
- Optics
- Microwaves
- Infrared Rays
- Holography
- Equipment Design
- 4009 Electronics, sensors and digital hardware
- 4006 Communications engineering
- 1113 Opthalmology and Optometry
- 0906 Electrical and Electronic Engineering
- 0205 Optical Physics
Citation

Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Optics
- Microwaves
- Infrared Rays
- Holography
- Equipment Design
- 4009 Electronics, sensors and digital hardware
- 4006 Communications engineering
- 1113 Opthalmology and Optometry
- 0906 Electrical and Electronic Engineering
- 0205 Optical Physics