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Optimization of metamaterial based subwavelength cavities for ultracompact directive antennas
Author(s) -
Ourir A.,
de Lustrac A.,
Lourtioz J.M.
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21996
Subject(s) - directivity , metamaterial , microwave , microstrip , antenna (radio) , metamaterial antenna , planar , optics , reflection (computer programming) , materials science , microstrip antenna , fabrication , optoelectronics , electrical impedance , acoustics , electrical engineering , slot antenna , engineering , telecommunications , physics , computer science , medicine , computer graphics (images) , alternative medicine , pathology , programming language
Artificial magnetic conductors (AMC) are proposed for the fabrication of subwavelength cavities in the microstrip technology. These metamaterials can simultaneously present a low phase value at reflection and a high impedance for normal incident waves over a wide frequency band. Planar cavities using AMC‐based reflectors are applicable to the design of ultracompact directive antennas. An optimized cavity structure is presently shown to provide a significant enhancement of the gain and directivity of a microstrip antenna near 10 GHz. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2573–2577, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21996
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