Numerical model for phase distribution characterization of reflectarray elements
A mathematical model to obtain a linear progressive phase distribution of six different high performance reflectarray resonant elements in order to realize a planar wave in front of the periodic aperture is formulated in this paper. All the resonant elements under characterization are tuned to opera...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2012
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6102/ http://eprints.uthm.edu.my/6102/1/Numerical_Model_for_Phase_Distribution.pdf |
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| Summary: | A mathematical model to obtain a linear progressive
phase distribution of six different high performance reflectarray
resonant elements in order to realize a planar wave in front of the
periodic aperture is formulated in this paper. All the resonant
elements under characterization are tuned to operate at X-band
frequency range using commercially available CST computer
model. The reflection phase curves for each resonant element are
then calculated by using analytical equations based on a periodic
Method of Moments (MoM). A Figure of Merit (FoM) has been
defined for the comparison of reflection phase curves obtained by
both simulation and formulation in terms of bandwidth and
static phase range performance. It has been demonstrated that
among the entire resonant elements triangular loop acquire
steepest phase characteristics gradient offering higher static
phase range of 190° with minimum bandwidth, whereas
rectangular patch element is shown to exhibit smoother phase
characteristics gradient giving lower static phase range of 120°
with broader bandwidth performance. Furthermore it has been
observed that triangular loop depicts the maximum reflection
loss of 3.90dB, whereas rectangular patch shows the minimum
reflection loss of 0.23dB. |
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