Abstract
Dual-band antenna is the main element for this project of unmanned aerial vehicle application. Previously, a frequency of 2.45 GHz is informed of linear polarization while the frequency of 1.575 GHz informed of circular polarization. Global Positioning System (GPS) applied towards the UAV use circular polarization with the antenna facing up for satellite connection and for Industrial Scientific and medical (ISM), the UAV use linear polarization where the antenna is facing down towards the ground to establish a connection with others electronic devices. Integrating both antennas into single antenna unit is challenging as it involves the characteristics of dual-band of frequencies and dual types of polarization where all the characteristics need to be fulfilled as a whole in order to be functioned as dual-band dual polarization antenna. Computer simulation software (CST) is used to design and optimize the antennas. Comparison is done among four designs of antennas designs which use microstrip feed line and proximity coupled feed to obtain the most efficient design to be applied at UAV for full operation. The best technique covered in order to fulfill all the requirements needed is proximity coupled feed. Design four is the best design because of the wide axial ratio bandwidth and efficiency is high.
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