Waveguide-Fed Tunable Metamaterial Element for Dynamic Apertures


Journal Article

© 2015 IEEE. We present the design of a tunable metamaterial element that can serve as the building block for a dynamically reconfigurable aperture. The element - a complimentary electric-LC (cELC) resonator - is patterned into the upper conductor of a microstrip transmission line, providing both a means of exciting the radiating metamaterial element as well as independent access for biasing circuitry. PIN diodes are connected across the capacitive gaps of the cELC, and a dc bias current is used to switch the junction between conducting and insulating states. The leakage of RF signal through the bias line is mitigated by integration of a radial decoupling stub. The proposed design and operation of the element are demonstrated through full-wave electromagnetic simulations. We discuss the potential application of the cELC element as a building block for metamaterial apertures capable of dynamic beamforming, imaging, or security screening applications.

Full Text

Duke Authors

Cited Authors

  • Sleasman, T; Imani, MF; Xu, W; Hunt, J; Driscoll, T; Reynolds, MS; Smith, DR

Published Date

  • January 1, 2016

Published In

Volume / Issue

  • 15 /

Start / End Page

  • 606 - 609

International Standard Serial Number (ISSN)

  • 1536-1225

Digital Object Identifier (DOI)

  • 10.1109/LAWP.2015.2462818

Citation Source

  • Scopus