Adaptive metamaterial antenna using coupled tunable split-ring resonators

A planar array of coupled split-ring resonators (SRR) shows many resonances over a broad frequency band at which the structure efficiently emits waves. The mode splitting due to coupling offers an unprecedented way for configuring the radiation pattern of the SRR array. It is shown that specific rad...

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Bibliographic Details
Published in:Electronics letters 2013-04, Vol.49 (8), p.1-1
Main Authors: Jouvaud, C, de Rosny, J, Ourir, A
Format: Article
Language:English
Subjects:
Antennas
Arrays
Electric potential
Electronics
Metamaterials
Oscillations
Resonators
Voltage
Online Access:Get full text
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Summary:A planar array of coupled split-ring resonators (SRR) shows many resonances over a broad frequency band at which the structure efficiently emits waves. The mode splitting due to coupling offers an unprecedented way for configuring the radiation pattern of the SRR array. It is shown that specific radiation patterns that include dipolar and quadrupolar oscillation patterns can be constructed by varying the self-impedance of the resonators. An experimental demonstration based on this concept using electronically tuned SRRs is presented. With this setup, the radiation pattern at a given frequency can be adjusted using a DC voltage command. The proposed structure is an efficient and compact alternative to traditional electronic beam-steering antennas.
ISSN:0013-5194
1350-911X