DESIGNING A CLOVERLEAF ANTENNA FOR A FPV DRONE COMMUNICATION SYSTEMS
Keywords:
Cloverleaf antenna, pattern, voltage standing wave ratio, gain, network analyzer NI PXIe-1062Q, microwave signal analyzer Keysight N9918A, software packageAbstract
Unmanned aerial vehicles (UAVs) are becoming increasingly widespread due to their broad range of applications. Initially developed for military purposes, they have gradually found their place in civilian sectors such as aerial photography, videography, goods delivery, agriculture, and environmental monitoring. UAVs demonstrate high efficiency in performing reconnaissance tasks and providing surveillance. A Cloverleaf antenna has been developed. The antenna is designed, and its characteristics are calculated using one of the most modern software for electromagnetic modeling, FEKO, which represents a new approach to the design of three-dimensional microwave (MW) devices. The visualized results of the Cloverleaf antenna are presented in the form of graphs.
The proposed method allows varying the input data, calculating and designing the antennae at a given frequency. The calculation results are displayed in the form of graphs. For the developed antenna, the radiation patterns in the polar system in E and H planes are presented. The value of the main lobe of the pattern at half-power is calculated. The dependencies of the voltage standing wave ratio (VSWR) and the gain in the frequency range of 1.2..1.6 GHz are provided.
The construction of the real antenna is shown. The results of comparisons between the values of dependency VSWR on the frequency and radiation patterns of the real and the designed antennae are introduced. The parameters of the developed antenna are measured using the NI PXIe-1062Q vector network analyzer and the Keysight N9918A microwave signal analyzer. The results of experimental studies have shown their compliance with the results of modeling. The developed antenna operates in the 1.2 …1.6 GHz frequency range.
