Design of a Directional Microstrip Antenna at UHF-Band for Passive Radar Application

Abstract

Passive radar is an electromagnetic system that can receive the frequency signals from transmitted source such as FM radio, TV broadcasting station, or mobile communication base station to detect the presence of an object by utilizing its frequency reflection. One of the components of a passive radar is an antenna. An antenna in a passive radar is to receive an information signal from the reflection of an object and then the data that already received will be processed into the form of signal before it was displayed on the monitor. This paper aims to create a microstrip antenna with directional pattern for a passive radar. Microstrip antenna is a type of antenna that has a light weight, easy to fabricate, has a simple shape and lower cost. The design and simulation of antenna are using CST Studio Suite software. If the simulation results fit with the requirement, we fabricate and measure it and then compare it with the simulation results. The result of antenna has an ultrahigh frequency (UHF), directional pattern, gain 6dBi and range bandwidth minimum 470Mhz - 780Mhz.