Design of A Compact Linearly Dual Polarized Series-Fed Phased Array Antenna Using Rhombus Feeding Technique for Ku-Band Satellite Communications

Alternative access methods beyond terrestrial networks are essential to reach blank spots in all geographical areas of Indonesia. Satellite communication systems offer a viable solution that requires the development of phased array antennas. A dual-polarized linear antenna is crucial for directing electromagnetic signals and improving signal quality. Series-fed microstrip antenna arrays are commonly utilized in some applications because of their compact size, lightweight, and ease of integration with RF modules. This research presents the design of a compact lx8 Series-fed Sub-Array Antenna operating at 12.55 GHz, achieving a VSWR below 1.5, a gain of 7.781 dBi, a bandwidth of 261 MHz. and dual linear polarization.

I. Introduction

Indonesia is the largest archipelagic country in the world, with a marine area of about 5.8 million km² [1]. To cover all geographical regions in Indonesia, it is necessary to have access to alternative communication in addition to terrestrial networks that can reach blank spot areas. Satellite communication systems are an alternative solution that can be used. For the development of satellite technology, the design and implementation of phased array antennas become essential. Phased array antennas offer several significant advantages over traditional antenna systems. Phased array antennas enhance secure transmission by focusing the radiation pattern toward the intended receiver while minimizing radiation in other directions [2].