Saline Solution Based Miniaturized Low Frequency Dipole for UAV based River Monitoring Systems

Affixing PVC (Polyvinyl Chloride) pipe filled with 3.5% saline solution to wire antennas can aid to realize efficient electrically small low-frequency antennas, proof of concept for the aforementioned proposal is presented in this paper. Among the existing antenna miniaturization techniques, this tends to be simple, reliable, and cost-effective. Experimental results show a size reduction of 47% with a return loss of around -50dB along with a bandwidth enhancement of 53%. The primary goal of any miniaturization technique is to ensure the compactness of the overall system. This provides a vital solution to solve many challenges involved in potential transport systems like inland water transport systems. ANSYS HFSS was used for the preliminary design and simulation. Validation of return loss was carried out with Antenna Analyser (100kHz - 8GHz).