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Miniaturization of Circular Patch Antennas Using MNG Metamaterials

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3 Author(s)
Jahani, S. ; Center of Excellence on Appl. Electromagn. Syst., Univ. of Tehran, Tehran, Iran ; Rashed-Mohassel, J. ; Shahabadi, M.

Miniaturized circular patch antennas loaded by helices, which operate as μ-negative (MNG) metamaterials, is reported. Two antennas having different helix parameters have been fabricated. The patch radius for both antennas is 42 mm. The first fabricated antenna shows a resonance at 1.126 GHz, which corresponds to a 40% size reduction. The second antenna has an even better size reduction of 60%. Measured results of return loss and radiation pattern at the subwavelength resonances are compared to these parameters at the conventional resonance of the patch antenna.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )