Adaptive Gain Control for Parabolic Reflector Antenna Using Real Time Embedded system

Abstract

The study aims to investigate the gain of parabolic reflector antenna control by using real time embedded system .In turn the control of parabolic reflector antenna leads to control of antenna radiation which is the main element to transmit and receive signal for wireless communication. This study is about system design of control of parabolic reflector antenna gain which plays the main goal of using the parabolic reflector antenna for long distance communication systems (satellite, radar and microwave transmission lines). The parabolic antenna is characterized by high gain, here we use the helical antenna as feeder of parabolic reflector antenna to increase the gain and give the ideal polarization which is requested at satellite communication. The methodology of this study is composed of the control of dish diameter using real time embedded system to increase and decrease the parabolic dish diameter size, which is the main parameter in terms of gain. The system controls the helical antenna (feeder) by controlling the gain by real time embedded system. The device and algorithm described is enough compact and simple to be suitable for all goals of wireless communication systems and it is very ideal for radar and telecom microwave transmission systems. Practical and simulation result show the increase of gain according to the increase of parabolic dish diameter, and control the gain of helical antenna until obtaining the optimum value for gain.