Comparison Of Eight Elements Array Structure Design For Coastal Surveillance Radar

Abstract

This paper proposed two different array of antenna designs for coastal surveillance radar application. The material antenna used Epoxy FR-4 with 4.6 of dielectric constant and simulated by CST Microwave Studio. The basic antenna is designed using a single rectangular shape at operating frequency 3 GHz, and then it continues to add 8-element of the array antenna. The 8-element array antenna consists of a one-dimensional feed network and a two-dimensional feed network. One-dimensional feed network is structured by a 1×8-element array antenna, while two-dimensional is a 2×4-element array. The simulation result showed that one-dimensional design achieved a better results in reflection factor, gain, and far-field radiation pattern parameters. On the other hand, two-dimensional has larger bandwidth that is around 235.3 MHz. In conclusion, both structures have good agreement with radar antenna specifications.