Title:
A novel flat lens horn antenna designed based on zero refraction principle of metamaterials
Author(s):
Q.Wu, P. Pan, F.-Y. Meng, L.-W. Li, J.Wu
Source:
Applied Physics A
Vol./Issue/Date:
87, (2007)
Year:
2007
Page(s):
151–156
Keywords:
Abstract:
In this paper, a horn antenna filled with a metamaterial
structure as lens inner the aperture is presented. Unlike
conventional curve lenses, the lens is designed in the present
work using a fully flat structure, which results in a great improvement
for the directivity of the horn antenna based on the
zero refraction characteristics of the metamaterial. In this structure,
a periodic-structure metamaterial with three-layer metal
grids is designed using the CST Microwave Studio for optimization
and its zero refraction property is validated. For the
characterization of the antenna, the electric-field distribution in
radiation area, reflection parameter (S11), gain and radiation pattern
are calculated. The results show that the gain of a wide
flare angle horn antenna is enhanced with over 2 dB between
16.10–17.30 GHz after the metamaterial is utilized. Therefore,
the metamaterial lens horn structure results in aminiaturized antenna
design approach compared to the optimum conventional
horn of the same aperture size and gain in the interested frequency
band.
Document:
Reference Id:
328
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