Dynamically reconfigurable holographic metasurface aperture for a Mills-Cross monochromatic microwave camera.

Published

Journal Article

We present a reconfigurable, dynamic beam steering holographic metasurface aperture to synthesize a microwave camera at K-band frequencies. The aperture consists of a 1D printed microstrip transmission line with the front surface patterned into an array of slot-shaped subwavelength metamaterial elements (or meta-elements) dynamically tuned between "ON" and "OFF" states using PIN diodes. The proposed aperture synthesizes a desired radiation pattern by converting the waveguide-mode to a free space radiation by means of a binary modulation scheme. This is achieved in a holographic manner; by interacting the waveguide-mode (reference-wave) with the metasurface layer (hologram layer). It is shown by means of full-wave simulations that using the developed metasurface aperture, the radiated wavefronts can be engineered in an all-electronic manner without the need for complex phase-shifting circuits or mechanical scanning apparatus. Using the dynamic beam steering capability of the developed antenna, we synthesize a Mills-Cross composite aperture, forming a single-frequency all-electronic microwave camera.

Full Text

Duke Authors

Cited Authors

  • Yurduseven, O; Marks, DL; Fromenteze, T; Smith, DR

Published Date

  • March 2018

Published In

Volume / Issue

  • 26 / 5

Start / End Page

  • 5281 - 5291

PubMed ID

  • 29529733

Pubmed Central ID

  • 29529733

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.26.005281

Language

  • eng