Abstract
Rotation of polarization is the one of problem in communication with
linear polarization. In fact, it can reduce the received signal strength
down to -20 dB in some cases. Circular polarization is one the
accessible approaches for sorting this problem due to it can be immune
against polarization rotation. In this paper, proposed antenna can
perform in linear and circular polarization which can be switched
according to the condition of signal which is being transmitted.
Consequently, environmental disruptions could not decline the quality of
communication. 1) The proposed antenna is categorized in reconfigurable
antennas which have different methods for implementation. First of all,
the proposed antenna is a multi-polarization reconfigurable antenna that
can radiate circular polarization and linear polarization on the same
structure at a specific frequency. Moreover, a simple feeding network
for this antenna is implemented. This antenna utilizes common power
dividers for feeding the square patch. Finally, switching circuits which
are used for changing polarization in this antenna are by far simple
than that of existing works.