Design and Implementation of Vivaldi Antenna Based Beam steering System in S Band Using 6 Bit Phase Shifter

• Main Author: Hendra
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/40011
• Institution: Institut Teknologi Bandung

Phased Array Radar 3D is a radar based on Vivaldi array antennas that can direct the beam of a signal in a certain direction without the radar's physical movement. This method provides a shorter target tracking time because the mechanical movement of the radar is replaced by beam shifting only. In this final project a beamsteering system is designed that can direct the main lobe of the beam signal in a direction by giving phase to each antenna of an array antenna. The phase of each of these antennas will combine and form a constructive interference signal at an angle and destructive interference in the other angle, The array antenna used was initially simulated in software which was then implemented to a frequency of 3 GHz which would be the receiving antenna in the testing of this beamsteering system. In addition to array antenna, power combiners will also be used to combine signals per antenna. After the fabrication process, the array antenna and power combiner are measured, parameter values obtained such as antenna radiation pattern, VSWR, return loss tends to be good, namely VSWR ? 2 and return loss ? -10 dB and radiation pattern antenna leads unidirectionally. This beamsteering system is made using Arduino, shift registers, phase shifter, 1x4 power combiner and array antenna Vivaldi 1x12 which are integrated together. Tests are carried out by observing the main lobe of the array antenna radiation pattern stacking the beamsteering system for angles 10, 20 and 30 degrees. Tests conducted show that the system that has been designed is able to direct the main lobe of the signal to a certain direction. Keywords: beamsteering, radiation pattern, stacking antenna, power combiner