Abstract
In the present paper, a smart planar electrically steerable passive array radiator (ESPAR) antenna was developed and tested at the frequency of 1.33 GHz with the main goal to control the main radiation lobe direction, ensuring precise communication between the antenna that is implemented in an unmanned aerial vehicle (UAV) and the base station. A control system was also developed and integrated into the communication system: an antenna coupled to the control system. The control system consists of an Arduino, a digital potentiometer, and an improved algorithm that allows defining the radiation-lobe direction as a function of the UAV flight needs. The ESPAR antenna was tested in an anechoic chamber with the control system coupled to it so that all previously established requirements were validated.
Highlights
The Ministry of National Defense has the areas associated with the command, operation, and supervision of the Armed Forces (AF) as priorities in its investment and development program [1].These perspectives are in line with those of other industrialized countries, intending to carry out a transformation in defence that aims to modify the current armed forces, transforming them into forces based on knowledge and sophisticated technological platforms [2].Operational Theaters (OT) are increasingly demanding, and the AF have realized that we have entered the information and knowledge age, where information plays a decisive role in achieving operational superiority
According to the base station, the unmanned aerial vehicle (UAV) must be perfectly perpendicular and parallel to the ground. It sends information on changing the slope of the UAV; (6) after changing the route according to the communication needs, the algorithm checks the combination of capacities relative to the angle of the selected radiation lobe, and the control system communicates with the digital potentiometer to inject to the terminals of the diodes the corresponding voltages; (7) after completing the previous steps, the necessary conditions for the transmission of 10 s are fulfilled
The algorithm integrated in the Arduino was based on the orientation methodology used in UAVs by the FAP
Summary
The Ministry of National Defense has the areas associated with the command, operation, and supervision of the Armed Forces (AF) as priorities in its investment and development program [1]. The Armed Forces need fast, flexible forces with good communication systems and battlefield-monitoring capabilities [1] With this objective, the investigation and development of these means by the Armed Forces intends to maximize their effectiveness. The same applies to unmanned aerial vehicles (UAVs) This technological environment is used in a military context due to its flexibility, capacity for projection and exploration in the field, and, in some situations, it being able to replace conventional aircrafts.
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