TY - JOUR
T1 - Waveguide-Fed Tunable Metamaterial Element for Dynamic Apertures
AU - Sleasman, Timothy
AU - Imani, Mohammadreza F.
AU - Xu, Wangren
AU - Hunt, John
AU - Driscoll, Tom
AU - Reynolds, Matthew S.
AU - Smith, David R.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - Aperture antennas
KW - metamaterials
KW - tunable circuits and devices
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U2 - 10.1109/LAWP.2015.2462818
DO - 10.1109/LAWP.2015.2462818
M3 - Article
AN - SCOPUS:84963852494
VL - 15
SP - 606
EP - 609
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
SN - 1536-1225
M1 - 7173427
ER -