A broadband dual-mode monopole antenna using NRI-TL metamaterial loading

Antoniades, M. A., Eleftheriades, G. V. and Rogers, E. S. (2009) A broadband dual-mode monopole antenna using NRI-TL metamaterial loading. IEEE Antennas and Wireless Propagation Letters, 8 Article # 4770196: 258-261.


Author Antoniades, M. A.
Eleftheriades, G. V.
Rogers, E. S.
Title A broadband dual-mode monopole antenna using NRI-TL metamaterial loading
Journal name IEEE Antennas and Wireless Propagation Letters   Check publisher's open access policy
ISSN 1536-1225
Publication date 2009
Sub-type Article (original research)
DOI 10.1109/LAWP.2009.2014402
Volume 8
Issue Article # 4770196
Start page 258
End page 261
Total pages 4
Place of publication Piscataway, NJ, United States
Publisher I E E E
Language eng
Formatted abstract A printed monopole antenna is proposed which uses negative-refractive-index transmission-line (NRI-TL) metamaterial loading in order to achieve a broadband dual-mode operation. The metamaterial-loaded monopole supports a predominately even-mode current at 5.5 GHz, which allows the antenna to be modeled as a short folded monopole. Around 3.55 GHz, the metamaterial-loaded monopole acts as a balun for the ground plane currents, therefore rendering the entire top edge of the ground plane as the main radiating element. This in turn radiates a dipolar mode that is orthogonal to the folded-monopole mode at 5.5 GHz. By virtue of the orthogonality between the two radiating modes, the metamaterial antenna exhibits a return-loss characteristic with a dual resonance, and therefore a very wide measured impedance bandwidth of 4.06 GHz. The total size of the antenna is only 22 × 30 mm, and the measured efficiency is on the order of 90% at both 3.55 and 5.5 GHz.
Keyword Folded monopole antenna
Metamaterials
Negative refractive index
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
School of Information Technology and Electrical Engineering Publications
 
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