NATURAL DIELECTRIC MATERIALS AND ITS IMPLEMENTATION IN WAVEGUIDE ANTENNA MODE TE10 COASTAL RADAR 3 GHz ANTENNA

Abstract

Manufacturing process was important in the development of antenna technology in order to obtain the antenna optimal performance. One of the approaches to increase the antenna performance was to use a natural dielectric material. In the study, a waveguide antenna was designed by inserting a natural dielectric material, a FR-4-Epoxy (? = 4,3 in the simulator) into a waveguide with a width of 72 mm, a height of 34 mm, and a length of 50 mm. The properties of the mode waveguide antenna were modified by slightly varying the position of the dielectric material and adding an initial thickness of 1.6 mm. The excitation of the waveguide was configured using mode. On the simulation shows that the best performance of the waveguide antenna was obtained when the dielectric position is 2 mm from the connector and thickness 3,2 mm. The simulation also generates the parameter of -22,8 dB with gain and directivity was 5,77 and 1,799 respectively at a frequency 3 of GHz while from measurement the frequency was shifted at 3,15 GHz with -23,05 Db. The gain and directivity were not measured in this research due to the limitations of the owned measuring tools and the difficulty of accessing other facilities due to the covid-19 pandemic.