2.22 GHz S-Band Helical Antenna Design for Earth Surveillance Lapan-Tubsat Data Acquisition in Indonesia Regional Security

Abstract

It is necessary to have a LAPAN-TUBSAT (Institute of Aeronautics and Space - the Technische University of Berlin Satellite) satellite data-receiving system that is low-cost and can be placed in various parts of Indonesia. This system will later spearhead the data receiver and this meets all areas detected by the earth surveillance method in real-time and can be recorded at the Earth Station. By using a helical antenna that is engineered independently with the rules of the S-Band at 2.22 GHz, it will be able to control the Indonesian region. The Design will be acquisition of the data from a satellite, and with the helical antenna. The Helical that by the requirement of the 2,22 GHz design. With the LHCP (Left Hand Circular Polarization) and with a bandwidth of 27 MHz. for the antenna parabola as a catcher of signal from the satellite we use the type of Prime focus which is the point focal in the central face of the parabola and we will put feed Horn that includes inside is the Helical feed antenna. The antenna has a specification movement is 0,25 degrees per second with the successful engineering of the development of the Helical antenna, it can also later apply it to various other satellites with adjustments to the dimensions of the antenna only and the receiving system.