Reconfigurable Dual Polarization Antenna

Chua, Pei Yong (2013) Reconfigurable Dual Polarization Antenna. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Due to signals are not travels only line of sight, it reaches the destination through multipath and causes the multipath effect which might weaken the receive signal. Dual polarization antennas able to overcome this problem where it can combat multipath effect, enhance the system performance, reduce interference, and increase channel capacity. Besides, the feature of reconfiguration enable the polarization of the antenna can be chosen. The main objective of this project is to design, simulate and fabricate the reconfigurable dual polarization antenna. The antenna should be able to operate at the resonant frequency of 2.4GHz with the return loss of -10dB and the type of polarization can be switch by using PIN diode. The design process of the antenna started from single linear and circular polarization antenna, dual polarization antenna and lastly the reconfigurable antenna. Then, the design antenna will be simulated by using CST software and some of them go for fabrication and measurement. The simulation and measurement result show that the design antenna having the resonant frequency about 2.4GHz and is able to produced dual polarization which is left-handed and right-handed circular polarization. Furthermore, the type of polarization can be switch by external power supplied to the PIN diode to trigger the ‘on’ and ‘off’ state. This reconfigurable dual polarization antenna can be used for any device that operate at 2.4GHz and it can aid in reduce the multipath effect. On the other hand, it can even enhance the system performance.

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