Multi-state frequency switchable reflectarray antenna design
Most of the space applications require high gain beam scanning antennas. Reflector antennas are the most common type of antennas used for these applications. This work provides a novel design of planar reflector to be used in reflectarray antenna design with multi-state frequency switchable characte...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/4139/ http://eprints.uthm.edu.my/4139/1/Multi%2DState_Frequency_Switchable_Reflectarray.pdf |
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| Summary: | Most of the space applications require high gain beam
scanning antennas. Reflector antennas are the most common type
of antennas used for these applications. This work provides a
novel design of planar reflector to be used in reflectarray antenna
design with multi-state frequency switchable characteristics.
Different configurations of slot embedded resonant patch
elements have been proposed and multiple PIN diodes have been
used in ON and OFF states to obtain frequency switching at
different points. The design has been demonstrated to be
operating in X-band frequency range where frequency tunability
from 9.63 GHz to 8.10 GHz has been demonstrated using
combination of rectangular slots and PIN diodes. Moreover the
design provides 2n different states of diode switching (n is
number of diodes) which can be used to obtain different resonant
frequencies of planar reflectors. The frequency tunability and
loss characteristics have been investigated which are affected by
the electric field intensity and surface current density on the
resonant patch elements of planar reflectors. |
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